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Cheap flights from San Antonio to Chicago from $93

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Chicago departing on 9/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Antonio to Chicago (SAT-ORD)

Cheap round-trip flights

Frontier Logo
5:40 pm - 12:10 amSAT-ORD
6h 30m1 stop
Frontier Logo
5:10 am - 4:30 pmORD-SAT
11h 20m1 stop
$173Frontier
Find Deal
lun., sep. 22 - vie., sep. 26
Frontier Logo
7:10 pm - 6:33 pmSAT-ORD
23h 23m1 stop
Frontier Logo
5:05 am - 4:52 pmORD-SAT
11h 47m1 stop
$174Frontier
Find Deal
vie., oct. 10 - dom., oct. 12
Frontier Logo
7:10 pm - 3:39 pmSAT-ORD
20h 29m1 stop
Frontier Logo
5:05 am - 4:52 pmORD-SAT
11h 47m1 stop
$176Frontier
Find Deal
vie., oct. 10 - dom., oct. 12
Frontier Logo
11:33 am - 12:10 amSAT-ORD
12h 37m1 stop
Frontier Logo
5:10 am - 4:30 pmORD-SAT
11h 20m1 stop
$177Frontier
Find Deal
jue., sep. 18 - lun., sep. 22
Frontier Logo
7:55 pm - 9:28 pmSAT-ORD
25h 33m1 stop
Frontier Logo
5:10 am - 4:30 pmORD-SAT
11h 20m1 stop
$180Frontier
Find Deal
vie., sep. 19 - lun., sep. 22
Logo
9:33 pm - 8:59 pmSAT-ORD
23h 26m1 stop
Logo
11:15 am - 8:52 pmORD-SAT
9h 37m1 stop
$181
Find Deal
jue., sep. 18 - mar., sep. 30
Frontier Logo
5:45 pm - 11:39 pmSAT-ORD
5h 54m1 stop
Frontier Logo
5:05 am - 4:52 pmORD-SAT
11h 47m1 stop
$182Frontier
Find Deal
vie., oct. 17 - dom., oct. 19
Spirit Airlines Logo
9:47 pm - 11:51 amSAT-ORD
14h 04m1 stop
Spirit Airlines Logo
5:05 am - 6:12 pmORD-SAT
13h 07m1 stop
$205Spirit Airlines
Find Deal
mié., sep. 24 - vie., sep. 26
Spirit Airlines Logo
9:47 pm - 11:51 amSAT-ORD
14h 04m1 stop
Spirit Airlines Logo
9:00 am - 8:52 pmORD-SAT
11h 52m1 stop
$211Spirit Airlines
Find Deal
vie., sep. 26 - mar., sep. 30
Spirit Airlines Logo
9:47 pm - 11:51 amSAT-ORD
14h 04m1 stop
Spirit Airlines Logo
9:00 am - 8:52 pmORD-SAT
11h 52m1 stop
$214Spirit Airlines
Find Deal
vie., sep. 26 - mar., sep. 30

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

Our best Frontier deals on San Antonio to Chicago O'Hare Intl Airport flight tickets
Frontier
Sep 22
SAT5:40 pmSan Antonio
6h 30m
1 stop
ORD12:10 amChicago O'Hare Intl
Sep 26
ORD5:10 amChicago O'Hare Intl
11h 20m
1 stop
SAT4:30 pmSan Antonio
$173
Find similar
Frontier
Sep 15
SAT5:40 pmSan Antonio
6h 30m
1 stop
ORD12:10 amChicago O'Hare Intl
Sep 22
ORD10:42 amChicago O'Hare Intl
8h 33m
1 stop
SAT7:15 pmSan Antonio
$174
Find similar
Frontier
Oct 10
SAT7:10 pmSan Antonio
20h 29m
1 stop
ORD3:39 pmChicago O'Hare Intl
Oct 12
ORD5:05 amChicago O'Hare Intl
11h 47m
1 stop
SAT4:52 pmSan Antonio
$176
Find similar

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

Our best Spirit Airlines deals on San Antonio to Chicago O'Hare Intl Airport flight tickets
Spirit Airlines
Sep 24
SAT9:47 pmSan Antonio
14h 04m
1 stop
ORD11:51 amChicago O'Hare Intl
Sep 26
ORD5:05 amChicago O'Hare Intl
13h 07m
1 stop
SAT6:12 pmSan Antonio
$205
Find similar
Spirit Airlines
Sep 26
SAT9:47 pmSan Antonio
14h 04m
1 stop
ORD11:51 amChicago O'Hare Intl
Sep 30
ORD9:00 amChicago O'Hare Intl
11h 52m
1 stop
SAT8:52 pmSan Antonio
$211
Find similar
Spirit Airlines
Sep 26
SAT9:47 pmSan Antonio
14h 04m
1 stop
ORD11:51 amChicago O'Hare Intl
Sep 30
ORD9:00 amChicago O'Hare Intl
11h 52m
1 stop
SAT8:52 pmSan Antonio
$214
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Chicago O'Hare Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated septiembre 4, 2025.
Use the filters below to find and compare flights from San Antonio to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioChicago

SAT - ORD

SATORD

San Antonio

lun. 9/22

5:40 pm-12:10 am

1 stop6h 30m

Chicago O'Hare Intl

vie. 9/26

5:10 am-4:30 pm

1 stop11h 20m

$173

San AntonioChicago

SAT - ORD

SATORD

San Antonio

vie. 10/10

7:10 pm-6:33 pm

1 stop23h 23m

Chicago O'Hare Intl

dom. 10/12

5:05 am-4:52 pm

1 stop11h 47m

$174

San AntonioChicago

SAT - ORD

SATORD

San Antonio

vie. 10/10

7:10 pm-3:39 pm

1 stop20h 29m

Chicago O'Hare Intl

dom. 10/12

5:05 am-4:52 pm

1 stop11h 47m

$176

San AntonioChicago

SAT - ORD

SATORD

San Antonio

jue. 9/18

11:33 am-12:10 am

1 stop12h 37m

Chicago O'Hare Intl

lun. 9/22

5:10 am-4:30 pm

1 stop11h 20m

$177

San AntonioChicago

SAT - ORD

SATORD

San Antonio

vie. 9/19

7:55 pm-9:28 pm

1 stop25h 33m

Chicago O'Hare Intl

lun. 9/22

5:10 am-4:30 pm

1 stop11h 20m

$180

San AntonioChicago

SAT - ORD

SATORD

San Antonio

jue. 9/18

9:33 pm-8:59 pm

1 stop23h 26m

Chicago O'Hare Intl

mar. 9/30

11:15 am-8:52 pm

1 stop9h 37m

$181

San AntonioChicago

SAT - ORD

SATORD

San Antonio

vie. 10/17

5:45 pm-11:39 pm

1 stop5h 54m

Chicago O'Hare Intl

dom. 10/19

5:05 am-4:52 pm

1 stop11h 47m

$182

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mié. 9/24

9:47 pm-11:51 am

1 stop14h 04m

Chicago O'Hare Intl

vie. 9/26

5:05 am-6:12 pm

1 stop13h 07m

$205

San AntonioChicago

SAT - ORD

SATORD

San Antonio

vie. 9/26

9:47 pm-11:51 am

1 stop14h 04m

Chicago O'Hare Intl

mar. 9/30

9:00 am-8:52 pm

1 stop11h 52m

$211

San AntonioChicago

SAT - ORD

SATORD

San Antonio

vie. 9/26

9:47 pm-11:51 am

1 stop14h 04m

Chicago O'Hare Intl

mar. 9/30

9:00 am-8:52 pm

1 stop11h 52m

$214

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chicago from

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

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 Chicago O'Hare Intl Airport?

The month of August is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from San Antonio averaging around $353.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Thursday when prices can be found for as low as $463. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from San Antonio because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $894.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from San Antonio in the evening is the least expensive time of day to depart. momondo users have found prices as low as $238 when looking at flights departing in the evening. Try not to purchase tickets at noon because they tend to be around $941. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $402 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from San Antonio for as low as $309 on momondo.

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

There are 4 cabin classes available to choose from on San Antonio to Chicago O'Hare Intl 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 San Antonio to Chicago O'Hare Intl Airport flights?

No. A direct flight is the cheapest option for a flight between San Antonio to Chicago O'Hare Intl Airport.

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

As of September 2025, prices for San Antonio to Chicago O'Hare Intl Airport flights are approximately 0% more expensive when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$220

Fastest flight time

2h 46m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from San Antonio in the past 72 hours is $220. The best round-trip flight deal from San Antonio to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $373.
The fastest flight from San Antonio to Chicago O'Hare Intl Airport takes 2h 46m
Direct flights go from San Antonio to Chicago O'Hare Intl Airport every day.
Search flight deals

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

    San Antonio and Chicago O'Hare Intl are 1048.8 mi apart from one another. A reasonable flight in good conditions will take 5h 54m.

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

    Prices for flights from San Antonio Airport to Chicago O'Hare Intl Airport are refreshed on a daily basis.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The necessary travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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

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

Compare and see reviews for airlines that fly from San Antonio to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $97Free CancellationRating
5.8
3,194 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $191Free CancellationRating
6.3
8,016 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $235Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $275Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $285Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights

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

    United Airlines operates around 16 flights from San Antonio to Chicago O'Hare Intl Airport every week. The average price of these flights found in the last 72 hours has been $489, but momondo users have found United Airlines deals from San Antonio to Chicago O'Hare Intl Airport from as low as $285 round-trip. United Airlines has been scored 7.4/10 in 8,939 reviews.

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

    The best American Airlines deal for San Antonio to Chicago O'Hare Intl Airport flight tickets found on momondo in the last 72 hours was $235, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $395 round-trip. American Airlines operates 10 flights out of San Antonio into Chicago O'Hare Intl Airport in an average week, so prices vary by time and availability. 10,000 American Airlines reviews by users on momondo have scored the airline at 7.2/10.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
South Haven
Rockford
Schaumburg
Merrillville
Gurnee
Naperville
Rosemont
Kenosha
New Buffalo
Joliet
Oak Brook
Racine
Hammond
Orland Park
Tinley Park
Elgin
Aurora
Janesville
Benton Harbor

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Antonio to Chicago. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Chicago from San Antonio which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential San Antonio to Chicago flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for San Antonio to Chicago flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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