What is the cheapest airline that flies from Chicago O'Hare Intl to San Antonio?

Frontier, Spirit Airlines, and American Airlines are the most popular carriers operating from Chicago O'Hare Intl to San Antonio

How many flights depart from Chicago O'Hare Intl Airport to San Antonio on average per day?

As of September 2025, 18 flights take off from Chicago O'Hare Intl Airport and land in San Antonio each day. The most common flight departure time for this route is 2:00PM, with 43% of daily flights taking off in the evening.

What airlines fly to San Antonio?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to San Antonio from Chicago O'Hare Intl Airport according to our data. American Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 5 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

How many flights depart from Chicago O'Hare Intl Airport to San Antonio on average per week?

128 flights are operational weekly from Chicago O'Hare Intl Airport to San Antonio as of September 2025. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.

Which airlines fly direct from Chicago to San Antonio?

A good number of airline operators offer one-way flights from Chicago to San Antonio. Each airline offers something different in terms of amenities, comfort, and prices, so it is up to you to determine the most convenient one. For example, American Airlines offers daily Chicago to San Antonio flights departing from O'Hare International Airport (ORD) and landing at San Antonio International Airport (SAT) in less than 3h. Some of the amenities you get with American Airlines include streaming, on-demand, and live TV, free snacks, wireless internet that can facilitate Netflix streaming (at a fee), and comfortable seats. United Airlines flights are a bit over 3h, also departing and landing in similar airports. The difference comes in with the amenities, as United Airlines offers free wireless internet that can only facilitate basic web browsing and premium snacks at a fee. You could also go for the cheap flights from Chicago to San Antonio with a layover in Denver offered by Frontier.

What is the best way to get in and out of airports in Chicago and San Antonio?

To get to O’Hare International Airport from downtown Chicago, you can take the I-90 W and it will only be about 20min before you are in the airport ready for your flights from Chicago to San Antonio. Here, you can either choose to take a taxi or rental car, both of which offer the most convenience. There are plenty of rental car locations all over downtown Chicago, so finding one should be easy. Taxis can pick you up at any point you like. The alternative to that would be the blue line train, which goes from La Salle Station towards Cumberland, which is less than a mile from O’Hare Airport. To get to downtown San Antonio from the airport, you can take the Metropolitan Transit bus route 5, which operates between the airport and San Antonio every day. The buses can be found at Airport Blvd and will drop you at N. St Mary’s & Lexington, which is a short walk from downtown. If you have loads of luggage and want to avoid walking too far, you could take a car rental from the airport, which affords more convenience and flexibility. Which cities can you get to from San Antonio Airport? After your flight from Chicago to San Antonio has landed at San Antonio Airport, you have access to some of the most beautiful towns in Texas. Concan, for example, is an amazing summer treat in the outskirts of San Antonio which is accessible via the US-90 E. Other cities in proximity to San Antonio include Fredericksburg, Boerne, and Austin.

What are the benefits of the different airports in Chicago and San Antonio?

There are plenty of benefits of traveling through O'Hare International Airport (ORD). For starters, there are about 15 lounges around the airport to accommodate waiting passengers. These lounges have comfortable sitting and sleeping space as well as spacious workstations which can come in handy in case you want to get some work done before boarding your flight. Also, considering Chicago’s vibrant food scene, there are dining options practically at every corner of the airport. From classic Chicago-style hotdogs to that famous deep-dish pizza and even American steaks, it’s amazing how many dining options there are. In San Antonio, the only alternative to San Antonio International would be Austin Bergstrom International Airport, which is under anh away from San Antonio. However, considering that passenger traffic is higher in Austin compared to San Antonio, you’ll be better off flying into San Antonio.

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to San Antonio Airport?

Prices for flights from Chicago O'Hare Intl Airport to San Antonio Airport refresh daily.

How old do you have to be to fly from Chicago O'Hare Intl Airport to San Antonio Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to San Antonio Airport.

What documentation or ID do you need to fly to San Antonio Airport?

The required travel and health documents for your San Antonio Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Antonio Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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Find the cheapest flights from Chicago O'Hare Intl Airport to San Antonio

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:50 am - 7:41 pmORD-SAT

12h 51m1 stop

5:32 pm - 11:53 pmSAT-ORD

6h 21m1 stop

$158Frontier

Find Deal

jue., oct. 16 - sáb., oct. 18

5:05 am - 4:52 pmORD-SAT

11h 47m1 stop

3:59 pm - 11:53 pmSAT-ORD

7h 54m1 stop

$160Frontier

Find Deal

dom., oct. 12 - mar., oct. 21

8:25 am - 2:27 pmORD-SAT

6h 02m1 stop

5:40 pm - 11:39 pmSAT-ORD

5h 59m1 stop

$166Frontier

Find Deal

sáb., sep. 27 - vie., oct. 3

8:25 am - 2:27 pmORD-SAT

6h 02m1 stop

11:33 am - 11:39 pmSAT-ORD

12h 06m1 stop

$167Frontier

Find Deal

sáb., sep. 27 - jue., oct. 2

8:25 am - 2:27 pmORD-SAT

6h 02m1 stop

3:22 pm - 9:28 pmSAT-ORD

6h 06m1 stop

$173Frontier

Find Deal

sáb., sep. 27 - sáb., oct. 4

10:43 pm - 3:35 pmORD-SAT

16h 52m1 stop

4:16 pm - 11:42 pmSAT-ORD

7h 26m1 stop

$199Multiple Airlines

Find Deal

vie., nov. 7 - mié., nov. 12

5:11 am - 4:40 pmORD-SAT

11h 29m1 stop

4:16 pm - 11:42 pmSAT-ORD

7h 26m1 stop

$203Multiple Airlines

Find Deal

vie., nov. 14 - mié., nov. 19

5:05 am - 3:11 pmORD-SAT

10h 06m1 stop

4:16 pm - 11:42 pmSAT-ORD

7h 26m1 stop

$212Spirit Airlines

Find Deal

mié., nov. 5 - lun., nov. 10

5:05 am - 3:11 pmORD-SAT

10h 06m1 stop

4:16 pm - 11:42 pmSAT-ORD

7h 26m1 stop

$217Spirit Airlines

Find Deal

sáb., nov. 8 - mié., nov. 12

6:45 am - 3:47 pmORD-SAT

9h 02m1 stop

10:11 am - 6:00 pmSAT-ORD

7h 49m1 stop

$243American Airlines

Find Deal

mar., oct. 21 - mar., oct. 28

Spirit Airlines flights from Chicago O'Hare Intl Airport to San Antonio

Our best Spirit Airlines deals on Chicago O'Hare Intl Airport to San Antonio flight tickets

Spirit Airlines

Nov 5

ORD5:05 amChicago O'Hare Intl

10h 06m

1 stop

SAT3:11 pmSan Antonio

Nov 10

SAT4:16 pmSan Antonio

7h 26m

1 stop

ORD11:42 pmChicago O'Hare Intl

$212

Find similar

Spirit Airlines

Nov 8

ORD5:05 amChicago O'Hare Intl

10h 06m

1 stop

SAT3:11 pmSan Antonio

Nov 12

SAT4:16 pmSan Antonio

7h 26m

1 stop

ORD11:42 pmChicago O'Hare Intl

$217

Find similar

Spirit Airlines

Jan 10

ORD10:18 amChicago O'Hare Intl

12h 09m

1 stop

SAT10:27 pmSan Antonio

Jan 13

SAT6:44 pmSan Antonio

11h 41m

1 stop

ORD6:25 amChicago O'Hare Intl

$231

Find similar

Frontier flights from Chicago O'Hare Intl Airport to San Antonio

Our best Frontier deals on Chicago O'Hare Intl Airport to San Antonio flight tickets

Frontier

Oct 16

ORD6:50 amChicago O'Hare Intl

12h 51m

1 stop

SAT7:41 pmSan Antonio

Oct 18

SAT5:32 pmSan Antonio

6h 21m

1 stop

ORD11:53 pmChicago O'Hare Intl

$158

Find similar

Frontier

Oct 12

ORD5:05 amChicago O'Hare Intl

11h 47m

1 stop

SAT4:52 pmSan Antonio

Oct 21

SAT3:59 pmSan Antonio

7h 54m

1 stop

ORD11:53 pmChicago O'Hare Intl

$160

Find similar

Frontier

Sep 25

ORD5:10 amChicago O'Hare Intl

5h 38m

1 stop

SAT10:48 amSan Antonio

Sep 26

SAT7:25 pmSan Antonio

26h 03m

1 stop

ORD9:28 pmChicago O'Hare Intl

$162

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

jue. 10/16

6:50 am-7:41 pm

1 stop12h 51m

San Antonio

sáb. 10/18

5:32 pm-11:53 pm

1 stop6h 21m

$158

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

dom. 10/12

5:05 am-4:52 pm

1 stop11h 47m

San Antonio

mar. 10/21

3:59 pm-11:53 pm

1 stop7h 54m

$160

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

sáb. 9/27

8:25 am-2:27 pm

1 stop6h 02m

San Antonio

vie. 10/3

5:40 pm-11:39 pm

1 stop5h 59m

$166

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

sáb. 9/27

8:25 am-2:27 pm

1 stop6h 02m

San Antonio

jue. 10/2

11:33 am-11:39 pm

1 stop12h 06m

$167

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

sáb. 9/27

8:25 am-2:27 pm

1 stop6h 02m

San Antonio

sáb. 10/4

3:22 pm-9:28 pm

1 stop6h 06m

$173

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

vie. 11/7

10:43 pm-3:35 pm

1 stop16h 52m

San Antonio

mié. 11/12

4:16 pm-11:42 pm

1 stop7h 26m

$199

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

vie. 11/14

5:11 am-4:40 pm

1 stop11h 29m

San Antonio

mié. 11/19

4:16 pm-11:42 pm

1 stop7h 26m

$203

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

mié. 11/5

5:05 am-3:11 pm

1 stop10h 06m

San Antonio

lun. 11/10

4:16 pm-11:42 pm

1 stop7h 26m

$212

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

sáb. 11/8

5:05 am-3:11 pm

1 stop10h 06m

San Antonio

mié. 11/12

4:16 pm-11:42 pm

1 stop7h 26m

$217

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

mar. 10/21

6:45 am-3:47 pm

1 stop9h 02m

San Antonio

mar. 10/28

10:11 am-6:00 pm

1 stop7h 49m

$243

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How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to San Antonio

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of August, then book flights to San Antonio from Chicago O'Hare Intl Airport during September instead. Flights to San Antonio in September, while not as cheap as those in August, still average around $356.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Wednesday when prices can be found for as low as $392. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $447.

What is the cheapest time of day to depart on your flight to San Antonio?

According to our data, the cheapest time of day to fly to San Antonio is at noon. momondo users have found flights departing from Chicago O'Hare Intl Airport to San Antonio at noon for as low as $378. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the morning, with an average ticket price of $427. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Chicago O'Hare Intl to San Antonio flight route?

Fly from Chicago O'Hare Intl to San Antonio for the best Chicago O'Hare Intl - San Antonio flight prices

How far in advance should I book a flight to San Antonio?

You are more likely to see cheaper flights to San Antonio from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $401 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Chicago O'Hare Intl Airport for as low as $316 on momondo.

What cabin class options are available on Chicago O'Hare Intl to San Antonio flights?

There are 4 cabin classes available to choose from on Chicago O'Hare Intl to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago O'Hare Intl Airport to San Antonio flights?

You could potentially save up to 28% on your flight if you consider stops on a Chicago O'Hare Intl Airport to San Antonio flight.

How have Chicago O'Hare Intl Airport to San Antonio flight prices changed over time?

As of September 2025, prices for Chicago O'Hare Intl Airport to San Antonio flights are approximately 1% more expensive when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to San Antonio

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to San Antonio according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to San Antonio (ORD to SAT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to San Antonio

Best Price Found	$178
Fastest flight time	2h 52m
Direct flights	Every day
Airports in San Antonio	1 airport

The best one-way flight to San Antonio from Chicago O'Hare Intl Airport in the past 72 hours is $178. The best round-trip flight deal from Chicago O'Hare Intl Airport to San Antonio found on momondo in the last 72 hours is $307.

The fastest flight from Chicago O'Hare Intl Airport to San Antonio takes 2h 52m

Direct flights go from Chicago O'Hare Intl Airport to San Antonio every day.

There is 1 airport near San Antonio: San Antonio (SAT)

Search flight deals

How far is Chicago O'Hare Intl to San Antonio by plane?
The distance between Chicago O'Hare Intl and San Antonio is about 1048.8 mi. Typically, this will take 6h 02m by plane in normal conditions.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to San Antonio Airport?
Prices for flights from Chicago O'Hare Intl Airport to San Antonio Airport refresh daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to San Antonio Airport?
The number of operators available for flights from Chicago O'Hare Intl Airport to San Antonio Airport is 5 as of September 2025.
How old do you have to be to fly from Chicago O'Hare Intl Airport to San Antonio Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to San Antonio Airport.
What documentation or ID do you need to fly to San Antonio Airport?
The required travel and health documents for your San Antonio Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Antonio Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Chicago O'Hare Intl Airport to San Antonio?
Based on momondo bookings for flights between Chicago O'Hare Intl Airport and San Antonio, the leading plane model is Airbus A319, making up 30.56% of the total bookings. Other popular models include Boeing 737-700 with 17.47%, Airbus A320-100/200 with 9.81%, and Boeing 737-800 with 7.58%.
What is the most popular airline from Chicago O'Hare Intl Airport to San Antonio?
momondo data reveals that the most frequently booked airline on the route from Chicago O'Hare Intl Airport to San Antonio is American Airlines, representing 57% of all bookings. The subsequent popular airlines are United Airlines at 32%, Frontier at 5%, and Spirit Airlines at 5%.

Best airlines flying from Chicago O'Hare Intl Airport to San Antonio

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to San Antonio with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $125	Free Cancellation	Rating 5.8 3,174 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $172	Free Cancellation	Rating 6.3 8,019 reviews	Search Spirit Airlines flights
American Airlines	PriceFrom $194	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $203	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights
United Airlines	PriceFrom $261	Free Cancellation	Rating 7.4 8,924 reviews	Search United Airlines flights

United Airlines Flights From Chicago O'Hare Intl Airport to San Antonio
United Airlines flight deals from Chicago O'Hare Intl Airport to San Antonio start from $261 round-trip. Over the 15 United Airlines flights for this route in a normal week, average airfare is usually $474 round-trip - but some users have found much cheaper deals with momondo.
American Airlines Flights From Chicago O'Hare Intl Airport to San Antonio
American Airlines (7.2/10 from 10,000 reviews) operates around 15 flights from Chicago O'Hare Intl Airport to San Antonio in any given week. The average American Airlines airfare for this route is around $400, with deals from around $194 rare but found on momondo. Referenced prices are for round-trip Chicago O'Hare Intl Airport to San Antonio flight searches in the last 72 hours.

New Braunfels

Kerrville

Boerne

Schertz

Pleasanton

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momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to San Antonio. momondo saves you time and could save you money on your trip.

Can I find flights from Chicago to San Antonio with flexible booking policies on momondo?

Flights from Chicago to San Antonio with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Chicago to San Antonio?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Antonio from Chicago.

I’m not ready to book a flight from Chicago to San Antonio right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to San Antonio flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to San Antonio

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of August, then book flights to San Antonio from Chicago O'Hare Intl Airport during September instead. Flights to San Antonio in September, while not as cheap as those in August, still average around $356.

What is the cheapest day to depart on your flight to San Antonio?

What is the cheapest time of day to depart on your flight to San Antonio?

What is the cheapest Chicago O'Hare Intl to San Antonio flight route?

Fly from Chicago O'Hare Intl to San Antonio for the best Chicago O'Hare Intl - San Antonio flight prices

How far in advance should I book a flight to San Antonio?

What cabin class options are available on Chicago O'Hare Intl to San Antonio flights?

There are 4 cabin classes available to choose from on Chicago O'Hare Intl to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago O'Hare Intl Airport to San Antonio flights?

You could potentially save up to 28% on your flight if you consider stops on a Chicago O'Hare Intl Airport to San Antonio flight.

How have Chicago O'Hare Intl Airport to San Antonio flight prices changed over time?

As of September 2025, prices for Chicago O'Hare Intl Airport to San Antonio flights are approximately 1% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Chicago O'Hare Intl to San Antonio?

Frontier, Spirit Airlines, and American Airlines are the most popular carriers operating from Chicago O'Hare Intl to San Antonio

What airlines fly to San Antonio?

How many flights depart from Chicago O'Hare Intl Airport to San Antonio on average per day?

As of September 2025, 18 flights take off from Chicago O'Hare Intl Airport and land in San Antonio each day. The most common flight departure time for this route is 2:00PM, with 43% of daily flights taking off in the evening.

How many flights depart from Chicago O'Hare Intl Airport to San Antonio on average per week?

128 flights are operational weekly from Chicago O'Hare Intl Airport to San Antonio as of September 2025. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.

When to book flights from Chicago O'Hare Intl Airport to San Antonio

Cheap Chicago O'Hare Intl Airport to San Antonio (ORD to SAT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to San Antonio

Best Price Found

Fastest flight time

Direct flights

Airports in San Antonio

How far is Chicago O'Hare Intl to San Antonio by plane?

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to San Antonio Airport?

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to San Antonio Airport?

How old do you have to be to fly from Chicago O'Hare Intl Airport to San Antonio Airport?

What documentation or ID do you need to fly to San Antonio Airport?

What is the most popular plane model from Chicago O'Hare Intl Airport to San Antonio?

What is the most popular airline from Chicago O'Hare Intl Airport to San Antonio?

Best airlines flying from Chicago O'Hare Intl Airport to San Antonio

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to San Antonio with momondo

United Airlines Flights From Chicago O'Hare Intl Airport to San Antonio

American Airlines Flights From Chicago O'Hare Intl Airport to San Antonio

Traveling to a place near San Antonio?

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to San Antonio?

Can I find flights from Chicago to San Antonio with flexible booking policies on momondo?

How can momondo help me find flights from Chicago to San Antonio?

I’m not ready to book a flight from Chicago to San Antonio right now. Can momondo alert me if prices change?

An easier way to manage your San Antonio trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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