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Cheap flights from San Antonio to Chicago from $64

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 3/3. 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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Find the cheapest flights from San Antonio to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
2:13 pm - 11:38 pm
SAT
-
ORD
9h 25m
1 stop
Frontier Logo
2:29 pm - 12:19 am
ORD
-
SAT
9h 50m
1 stop
$204Frontier
Tue, Mar 31 - Mon, Apr 13
Frontier Logo
2:13 pm - 11:38 pm
SAT
-
ORD
9h 25m
1 stop
Frontier Logo
3:29 pm - 12:19 am
ORD
-
SAT
8h 50m
1 stop
$205Frontier
Tue, Mar 31 - Wed, Apr 8
Spirit Airlines Logo
10:26 am - 11:22 am
SAT
-
ORD
24h 56m
1 stop
Spirit Airlines Logo
5:15 am - 9:30 am
ORD
-
SAT
28h 15m
1 stop
$206Spirit Airlines
Wed, Feb 18 - Sun, Feb 22
Spirit Airlines Logo
10:27 am - 11:21 am
SAT
-
ORD
24h 54m
1 stop
Spirit Airlines Logo
8:41 pm - 9:32 am
ORD
-
SAT
12h 51m
1 stop
$207Spirit Airlines
Tue, Apr 7 - Sun, Apr 12
Multiple Airlines Logo
5:04 pm - 10:46 am
SAT
-
ORD
17h 42m
1 stop
Multiple Airlines Logo
8:59 am - 4:18 pm
ORD
-
SAT
31h 19m
2 stops
$209Multiple Airlines
Fri, Feb 20 - Sun, Feb 22
Spirit Airlines Logo
10:27 am - 6:21 pm
SAT
-
ORD
7h 54m
1 stop
Spirit Airlines Logo
8:41 pm - 9:32 am
ORD
-
SAT
12h 51m
1 stop
$210Spirit Airlines
Wed, Apr 1 - Thu, Apr 9
Spirit Airlines Logo
10:26 am - 11:47 pm
SAT
-
ORD
13h 21m
1 stop
Spirit Airlines Logo
4:43 pm - 9:30 am
ORD
-
SAT
16h 47m
1 stop
$212Spirit Airlines
Thu, Feb 19 - Fri, Feb 20
Multiple Airlines Logo
6:45 am - 1:19 pm
SAT
-
ORD
6h 34m
1 stop
Multiple Airlines Logo
8:41 pm - 9:32 am
ORD
-
SAT
12h 51m
1 stop
$213Multiple Airlines
Fri, Apr 3 - Mon, Apr 13
Frontier Logo
5:04 pm - 10:30 am
SAT
-
ORD
17h 26m
1 stop
Frontier Logo
4:42 pm - 7:01 pm
ORD
-
SAT
26h 19m
2 stops
$216Frontier
Mon, Feb 16 - Fri, Feb 20
Frontier Logo
6:13 pm - 10:51 am
SAT
-
ORD
16h 38m
1 stop
Frontier Logo
6:07 pm - 1:12 pm
ORD
-
SAT
43h 05m
2 stops
$217Frontier
Mon, Feb 9 - Tue, Feb 10

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
Feb 18
SAT10:26 amSan Antonio
24h 56m
1 stop
ORD11:22 amChicago O'Hare Intl
Feb 22
ORD5:15 amChicago O'Hare Intl
28h 15m
1 stop
SAT9:30 amSan Antonio
$206
Spirit Airlines
Apr 7
SAT10:27 amSan Antonio
24h 54m
1 stop
ORD11:21 amChicago O'Hare Intl
Apr 12
ORD8:41 pmChicago O'Hare Intl
12h 51m
1 stop
SAT9:32 amSan Antonio
$207
Spirit Airlines
Apr 1
SAT10:27 amSan Antonio
7h 54m
1 stop
ORD6:21 pmChicago O'Hare Intl
Apr 9
ORD8:41 pmChicago O'Hare Intl
12h 51m
1 stop
SAT9:32 amSan Antonio
$210

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
Mar 31
SAT2:13 pmSan Antonio
9h 25m
1 stop
ORD11:38 pmChicago O'Hare Intl
Apr 13
ORD2:29 pmChicago O'Hare Intl
9h 50m
1 stop
SAT12:19 amSan Antonio
$204
Frontier
Mar 31
SAT2:13 pmSan Antonio
9h 25m
1 stop
ORD11:38 pmChicago O'Hare Intl
Apr 8
ORD3:29 pmChicago O'Hare Intl
8h 50m
1 stop
SAT12:19 amSan Antonio
$205
Frontier
Feb 16
SAT5:04 pmSan Antonio
17h 26m
1 stop
ORD10:30 amChicago O'Hare Intl
Feb 20
ORD4:42 pmChicago O'Hare Intl
26h 19m
2 stops
SAT7:01 pmSan Antonio
$216

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 January 29, 2026.
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

Tue 3/31

2:13 pm-11:38 pm

1 stop9h 25m

Chicago O'Hare Intl

Mon 4/13

2:29 pm-12:19 am

1 stop9h 50m

$204

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Tue 3/31

2:13 pm-11:38 pm

1 stop9h 25m

Chicago O'Hare Intl

Wed 4/8

3:29 pm-12:19 am

1 stop8h 50m

$205

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Wed 2/18

10:26 am-11:22 am

1 stop24h 56m

Chicago O'Hare Intl

Sun 2/22

5:15 am-9:30 am

1 stop28h 15m

$206

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Tue 4/7

10:27 am-11:21 am

1 stop24h 54m

Chicago O'Hare Intl

Sun 4/12

8:41 pm-9:32 am

1 stop12h 51m

$207

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Fri 2/20

5:04 pm-10:46 am

1 stop17h 42m

Chicago O'Hare Intl

Sun 2/22

8:59 am-4:18 pm

2 stops31h 19m

$209

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Wed 4/1

10:27 am-6:21 pm

1 stop7h 54m

Chicago O'Hare Intl

Thu 4/9

8:41 pm-9:32 am

1 stop12h 51m

$210

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Thu 2/19

10:26 am-11:47 pm

1 stop13h 21m

Chicago O'Hare Intl

Fri 2/20

4:43 pm-9:30 am

1 stop16h 47m

$212

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Fri 4/3

6:45 am-1:19 pm

1 stop6h 34m

Chicago O'Hare Intl

Mon 4/13

8:41 pm-9:32 am

1 stop12h 51m

$213

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Mon 2/16

5:04 pm-10:30 am

1 stop17h 26m

Chicago O'Hare Intl

Fri 2/20

4:42 pm-7:01 pm

2 stops26h 19m

$216

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Mon 2/9

6:13 pm-10:51 am

1 stop16h 38m

Chicago O'Hare Intl

Tue 2/10

6:07 pm-1:12 pm

2 stops43h 05m

$217

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 April is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from San Antonio averaging around $347.

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 $461. 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 $869.

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 morning is the least expensive time of day to depart. momondo users have found prices as low as $491 when looking at flights departing in the morning. Try not to purchase tickets at noon because they tend to be around $902. 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 $385 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 $279 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 January 2026, prices for San Antonio to Chicago O'Hare Intl Airport flights are approximately 55% 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

$236

Fastest flight time

2h 50m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from San Antonio in the past 72 hours is $236. The best round-trip flight deal from San Antonio to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $430.
The fastest flight from San Antonio to Chicago O'Hare Intl Airport takes 2h 50m
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 2h 50m.

  • 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
5.7
3,056 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $191Free CancellationRating
6.3
8,394 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $235Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
United AirlinesPriceFrom $260Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights

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

    United Airlines operates around 13 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 $434, but momondo users have found United Airlines deals from San Antonio to Chicago O'Hare Intl Airport from as low as $260 round-trip. United Airlines has been scored 7.4/10 in 9,215 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 $380 round-trip. American Airlines operates 8 flights out of San Antonio into Chicago O'Hare Intl Airport in an average week, so prices vary by time and availability. 11,206 American Airlines reviews by users on momondo have scored the airline at 7.2/10.

Traveling to a place near Chicago?

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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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