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$129+ Cheap flights from O'Hare Intl (ORD) to San Antonio (SAT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAT
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago O'Hare Intl to San Antonio are usually found in August or September, booked 79 days in advance, depart on a Saturday or Wednesday and return on a Thursday

Cheap flight deals from O'Hare Intl to San Antonio

Cheapest flights from O'Hare Intl to San Antonio
Explore the most affordable flight options available from O'Hare Intl to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 27, 2026.

This American Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:05 am
ORD
-
SAT
Nonstop2h 50m
American Airlines
Wed 9/302:35 pm
SAT
-
ORD
Nonstop3h 05m
American Airlines
Deal found 7/26$297
This American Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:06 pm
ORD
-
SAT
Nonstop2h 49m
American Airlines
Wed 9/163:02 pm
SAT
-
ORD
Nonstop3h 05m
American Airlines
Deal found 7/26$298
This Frontier deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:29 am
ORD
-
SAT
1 stop13h 08m
Frontier
Mon 8/179:32 pm
SAT
-
ORD
1 stop8h 05m
Frontier
Deal found 7/26$299
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:06 am
ORD
-
SAT
1 stop23h 06m
Frontier
Mon 11/169:57 am
SAT
-
ORD
1 stop13h 53m
Frontier
Deal found 7/24$300
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:30 am
ORD
-
SAT
1 stop12h 55m
Frontier
Sat 9/262:47 pm
SAT
-
ORD
1 stop14h 51m
Frontier
Deal found 7/25$301
This Super.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:13 pm
ORD
-
SAT
1 stop15h 43m
Frontier
Sun 8/169:32 pm
SAT
-
ORD
1 stop8h 05m
Frontier
Deal found 7/23$302
This Trip.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:55 pm
ORD
-
SAT
1 stop16h 53m
Frontier
Sun 9/1312:39 pm
SAT
-
ORD
1 stop16h 59m
Frontier
Deal found 7/25$303
This Frontier deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:29 am
ORD
-
SAT
1 stop13h 08m
Frontier
Sat 8/159:32 pm
SAT
-
ORD
1 stop8h 05m
Frontier
Deal found 7/22$304
This Frontier deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:29 am
ORD
-
SAT
1 stop13h 08m
Frontier
Mon 8/179:32 pm
SAT
-
ORD
1 stop8h 05m
Frontier
Deal found 7/22$305
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/710:00 pm
ORD
-
SAT
Nonstop2h 48m
American Airlines
Mon 9/142:03 pm
SAT
-
ORD
1 stop7h 06m
American Airlines
Deal found 7/24$306

Find flight deals from O'Hare Intl to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(American Airlines)

One-way from

$129
(Frontier)

Popular in

March

Cheapest in

August

Average price

$411

Good round-trip deal

$339 or less

Good one-way deal

$149 or less
Provider with most accurate pricing for Chicago O'Hare Intl-San Antonio flight deals.
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Provider most trusted by Cheapflights users for Chicago O'Hare Intl-San Antonio flights.
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From Chicago O'Hare Intl to San Antonio
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One-way flight from Chicago O'Hare Intl to San Antonio
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Chicago O'Hare Intl to San Antonio.
Search Deals
Price to beat on a one-way flight from Chicago O'Hare Intl to San Antonio.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to San Antonio 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, Cheapflights users made 2,558,603 searches. Data last updated July 27, 2026.
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

Cheapest round-trip

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Sat 9/19

7:50 pm-10:51 pm

Nonstop3h 01m

San Antonio

Mon 9/21

6:30 am-9:30 am

Nonstop3h 00m

$297

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Thu 8/27

1:30 pm-4:31 pm

Nonstop3h 01m

San Antonio

Wed 9/2

12:55 pm-3:55 pm

Nonstop3h 00m

$297

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Thu 10/8

9:05 am-12:11 pm

Nonstop3h 06m

San Antonio

Mon 10/12

7:25 pm-12:23 am

1 stop4h 58m

$307

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Tue 9/1

1:30 pm-4:31 pm

Nonstop3h 01m

San Antonio

Fri 9/4

12:55 pm-3:55 pm

Nonstop3h 00m

$357

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Wed 8/5

9:25 am-12:29 pm

Nonstop3h 04m

San Antonio

Wed 8/26

12:55 pm-3:55 pm

Nonstop3h 00m

$406

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Sun 8/23

5:53 pm-10:39 pm

1 stop4h 46m

San Antonio

Wed 9/2

6:30 am-9:29 am

Nonstop2h 59m

$422

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Thu 10/15

5:24 pm-11:01 pm

1 stop5h 37m

San Antonio

Sun 10/18

5:15 am-1:01 pm

1 stop7h 46m

$435

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Thu 8/20

7:00 am-7:58 pm

2 stops12h 58m

San Antonio

Sun 8/23

5:59 pm-11:26 pm

1 stop5h 27m

$490
Quickest round-trip

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Sat 8/1

7:58 pm-10:57 pm

Nonstop2h 59m

San Antonio

Sun 8/9

5:32 pm-8:33 pm

Nonstop3h 01m

$629

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Sat 8/1

7:58 pm-10:57 pm

Nonstop2h 59m

San Antonio

Thu 8/6

5:32 pm-8:33 pm

Nonstop3h 01m

$633

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from O'Hare Intl to San Antonio

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to San Antonio in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from O'Hare Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to San Antonio

How far ahead should I book a flight from Chicago O'Hare Intl Airport to San Antonio?

The best time to book flights from Chicago O'Hare Intl Airport to San Antonio is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Antonio (average of $337). Flying from Chicago O'Hare Intl Airport to San Antonio in March is currently the most expensive (average of $447). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ORD to SAT?

Find hourly flight availability from O'Hare Intl to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 27, 2026.

A simple way to save on the total cost of your ticket is to fly from Chicago O'Hare Intl Airport to San Antonio in the afternoon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to San Antonio. Price data was last updated on July 25, 2026.

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to San Antonio flight should consider departing on Friday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to San Antonio?

Airfare is typical for this route at the moment.

Chicago O'Hare Intl Airport to San Antonio flights typically cost between $277 and $479 in September.
The cheapest round-trip price found within the last 5 days was $297 on American Airlines (Sep 26-Sep 30).

The best insider tips for Chicago O'Hare Intl Airport to San Antonio flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to San Antonio trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD and SAT

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated July 27, 2026.
Get a feel of what it's like to fly with United Airlines,American Airlines, andFrontier from Chicago O'Hare Intl Airport to San Antonio by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,042 reviews

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Tim,May 2023

ORD - DLH

Didn’t have to wait long for the plane and was in the lounge through that time could relax there made it nice.
United Airlines
7.4
Good
10,042 reviews
United Airlines
7.4
Good
10,042 reviews

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Tim,May 2023

ORD - DLH

Didn’t have to wait long for the plane and was in the lounge through that time could relax there made it nice.
American Airlines
7.1
Good
11,842 reviews
United Airlines
7.4
Good
10,042 reviews

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Tim,May 2023

ORD - DLH

Didn’t have to wait long for the plane and was in the lounge through that time could relax there made it nice.
Frontier
5.6
Fair
2,755 reviews
United Airlines
7.4
Good
10,042 reviews

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Tim,May 2023

ORD - DLH

Didn’t have to wait long for the plane and was in the lounge through that time could relax there made it nice.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Antonio from Chicago O'Hare Intl?

    San Antonio (SAT) is the airport you will fly into if you book a flight from Chicago O'Hare Intl to San Antonio. You should not have trouble finding flights to San Antonio from Chicago O'Hare Intl; the airport handles an average of 24 inbound flights from Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the San Antonio airport from Chicago O'Hare Intl. It is only a 7.6 mi journey from San Antonio (SAT) to San Antonio’s city center.

  • How long is the flight from Chicago O'Hare Intl Airport to San Antonio?

    There are many flights that can get you from Chicago O'Hare Intl Airport to San Antonio in 3h 01m. Fly via United Airlines to get the fastest option. There are 1042 mi between Chicago O'Hare Intl Airport and San Antonio. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to San Antonio round-trip?

    Our cheapest airline available from Chicago O'Hare Intl Airport to San Antonio is Frontier. Our recent data shows that you can find tickets from as low as $101 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $219 and $258 round-trip. Frontier is 74% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to San Antonio one-way?

    One-way options have recently been found by users for as low as $59 on Frontier. Other airlines that offer cheap prices include American Airlines from $117 and United Airlines from $137 one-way.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to San Antonio?

    No one likes to see their flight delayed. When booking a flight from Chicago O'Hare Intl Airport to San Antonio consider choosing Japan Airlines (76%), Envoy Air (75%) or Republic Airways (67%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Chicago O'Hare Intl Airport to San Antonio?

    Looking for the cheapest flight from Chicago O'Hare Intl Airport to San Antonio? While on average our users pay $364, our data indicates the cheapest price to be $90. The most popular route (Chicago O'Hare Intl - San Antonio), is priced around $283.

  • Can I find deals for flights from O'Hare Intl to San Antonio that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to San Antonio.

  • Can I find deals for business class flights from O'Hare Intl to San Antonio?

    Yes. Cheapflights offers flight deals from O'Hare Intl to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Antonio (average of $337). Flying from Chicago O'Hare Intl Airport to San Antonio in March is currently the most expensive (average of $447). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville

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Top 3 airlines flying from O'Hare Intl to San Antonio

Discover the top 3 airlines that operate flights from O'Hare Intl to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$101Average$217FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$219Average$421FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$256Average$384FlexibilityNo cancel feeOn-time71%

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