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O'Hare Intl

$124+ Cheap flights from San Antonio (SAT) to O'Hare Intl (ORD)

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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — ORD
Aug 23 — Aug 301
Sun 8/23
Sun 8/30
1 adult, Economy
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Find cheap flights from San Antonio to O'Hare Intl with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from San Antonio to Chicago O'Hare Intl are usually found in September or August, booked 70 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap flight deals from San Antonio to O'Hare Intl

Cheapest flights from San Antonio to O'Hare Intl
Explore the most affordable flight options available from San Antonio to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.

This Super.com deal was found by Cheapflights users on 7/21. 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.
Wed 8/129:32 pm
SAT
-
ORD
1 stop8h 05m
Frontier
Wed 8/192:41 pm
ORD
-
SAT
1 stop28h 50m
Frontier
Deal found 7/21$267
This CheapOair deal was found by Cheapflights users on 7/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/159:32 pm
SAT
-
ORD
1 stop8h 05m
Frontier
Tue 8/182:41 pm
ORD
-
SAT
1 stop28h 50m
Frontier
Deal found 7/21$268
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:24 pm
SAT
-
ORD
1 stop20h 38m
Frontier
Mon 8/318:11 pm
ORD
-
SAT
1 stop25h 18m
Frontier
Deal found 7/23$269
This Trip.com deal was found by Cheapflights users on 7/20. 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.
Sat 8/298:26 pm
SAT
-
ORD
1 stop17h 10m
Frontier
Mon 8/312:41 pm
ORD
-
SAT
1 stop28h 50m
Frontier
Deal found 7/20$271
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.
Tue 9/88:26 pm
SAT
-
ORD
1 stop25h 09m
Frontier
Sat 9/1910:40 pm
ORD
-
SAT
1 stop11h 32m
Frontier
Deal found 7/23$272
This CheapOair deal was found by Cheapflights users on 7/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/289:51 am
SAT
-
ORD
1 stop13h 17m
Frontier
Wed 9/22:41 pm
ORD
-
SAT
1 stop28h 50m
Frontier
Deal found 7/21$273
This Frontier deal was found by Cheapflights users on 7/19. 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.
Sun 9/1311:08 am
SAT
-
ORD
1 stop10h 27m
Frontier
Sat 9/1910:40 pm
ORD
-
SAT
1 stop11h 32m
Frontier
Deal found 7/19$276
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 8/2010:24 pm
SAT
-
ORD
1 stop20h 38m
Frontier
Thu 8/272:41 pm
ORD
-
SAT
1 stop28h 50m
Frontier
Deal found 7/23$277
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/159:32 pm
SAT
-
ORD
1 stop8h 05m
Frontier
Mon 8/177:29 am
ORD
-
SAT
1 stop13h 08m
Frontier
Deal found 7/24$278
This Super.com deal was found by Cheapflights users on 7/20. 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.
Fri 8/218:26 pm
SAT
-
ORD
1 stop17h 10m
Frontier
Tue 8/252:41 pm
ORD
-
SAT
1 stop28h 50m
Frontier
Deal found 7/20$279
This Frontier deal was found by Cheapflights users on 7/21. 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 8/149:51 am
SAT
-
ORD
1 stop13h 19m
Frontier
Mon 8/177:29 am
ORD
-
SAT
1 stop13h 08m
Frontier
Deal found 7/21$283

Find flight deals from San Antonio to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to O'Hare Intl (ORD). 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 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$267
(Super.com)

One-way from

$124
(Frontier)

Popular in

November

Cheapest in

September

Average price

$409

Good round-trip deal

$388 or less

Good one-way deal

$252 or less
Provider with most accurate pricing for San Antonio-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for San Antonio-Chicago O'Hare Intl flights.
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From San Antonio to Chicago O'Hare Intl
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One-way flight from San Antonio to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 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 San Antonio to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from San Antonio to Chicago O'Hare Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to O'Hare Intl 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 24, 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

Cheapest round-trip
Quickest round-trip

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Mon 8/24

12:55 pm-3:55 pm

Nonstop3h 00m

Chicago O'Hare Intl

Sat 8/29

8:45 am-11:52 am

Nonstop3h 07m

$297

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Thu 10/29

6:43 am-9:39 am

Nonstop2h 56m

Chicago O'Hare Intl

Mon 11/2

4:00 pm-10:51 pm

1 stop6h 51m

$307

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Thu 8/27

6:30 am-9:29 am

Nonstop2h 59m

Chicago O'Hare Intl

Mon 8/31

4:11 pm-9:16 pm

1 stop5h 05m

$307

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Wed 10/28

5:30 am-10:11 am

1 stop4h 41m

Chicago O'Hare Intl

Sat 10/31

5:45 pm-10:51 pm

1 stop5h 06m

$317

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Thu 9/3

11:29 am-6:29 pm

1 stop7h 00m

Chicago O'Hare Intl

Sun 9/6

5:30 am-1:38 pm

1 stop8h 08m

$352

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Thu 9/3

11:29 am-6:29 pm

1 stop7h 00m

Chicago O'Hare Intl

Tue 9/8

8:55 am-3:53 pm

1 stop6h 58m

$360

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Fri 9/4

2:22 pm-7:30 pm

1 stop5h 08m

Chicago O'Hare Intl

Tue 9/8

8:55 am-3:53 pm

1 stop6h 58m

$380

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Sun 10/11

6:45 am-2:27 pm

1 stop7h 42m

Chicago O'Hare Intl

Tue 10/13

8:55 am-3:50 pm

1 stop6h 55m

$395

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Tue 8/25

5:59 pm-11:26 pm

1 stop5h 27m

Chicago O'Hare Intl

Thu 8/27

5:53 pm-10:39 pm

1 stop4h 46m

$400

San AntonioChicago

SAT - ORD

SATORD

San Antonio

Fri 12/25

4:18 pm-11:10 pm

1 stop6h 52m

Chicago O'Hare Intl

Sat 1/2

7:45 pm-11:00 pm

Nonstop3h 15m

$407

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/21

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

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

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 San Antonio to O'Hare Intl in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star
Super.comPrice Accuracy-Trust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*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 San Antonio-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Antonio-Chicago O'Hare Intl Airport 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 San Antonio-Chicago O'Hare Intl Airport 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 San Antonio to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from San Antonio 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 San Antonio to Chicago O'Hare Intl Airport

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

The price you pay for your flight from San Antonio to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 69 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from San Antonio to Chicago O'Hare Intl Airport (average of $339). Flying from San Antonio to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $467). 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 SAT to ORD?

Find hourly flight availability from San Antonio to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 24, 2026.

When flying from San Antonio to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 52% versus a flight at noon.

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

Airfare is below average for this route at the moment.

San Antonio to Chicago O'Hare Intl Airport flights typically cost between $286 and $456 in August.
The cheapest round-trip price found within the last 5 days was $267 on Frontier (Aug 12-Aug 19).

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

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated July 24, 2026.
Get a feel of what it's like to fly with United Airlines,American Airlines, andFrontier from San Antonio to Chicago O'Hare Intl Airport 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
10,025 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
10,025 reviews
United Airlines
7.4
Good
10,025 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.1
Good
11,838 reviews
United Airlines
7.4
Good
10,025 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Frontier
5.6
Fair
2,771 reviews
United Airlines
7.4
Good
10,025 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from San Antonio to O'Hare Intl. 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 from for flights from San Antonio to Chicago O'Hare Intl?

    If you book a flight to Chicago O'Hare Intl from San Antonio, you will be flying from San Antonio, which is the city’s only airport. San Antonio (SAT) is located 7.6 mi from the center of San Antonio. There are 24 flights from San Antonio to Chicago O'Hare Intl per day from 3 different airlines.

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

    Departing from San Antonio to Chicago O'Hare Intl Airport will take you 3h. The distance from San Antonio to Chicago O'Hare Intl Airport is about 1042 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $97, Frontier will fly you from San Antonio to Chicago O'Hare Intl Airport and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $235 and $287, respectively. You may be able to fly from San Antonio to Chicago O'Hare Intl Airport for 75% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from San Antonio to Chicago O'Hare Intl Airport are Frontier ($76), American Airlines ($142), and United Airlines ($148).

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

    Consider Japan Airlines (87%), ANA (83%) or Envoy Air (78%) when booking your flight. These represent the most reliable airlines when flying from San Antonio to Chicago O'Hare Intl Airport.

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

    On average you can expect to pay $808 for a flight from San Antonio to Chicago O'Hare Intl Airport. The cheapest flight overall is $149 while the most popular route, (San Antonio - Chicago O'Hare Intl) is currently priced at $285.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Antonio to O'Hare Intl 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 San Antonio to Chicago O'Hare Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from San Antonio to Chicago O'Hare Intl Airport (average of $339). Flying from San Antonio to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $467). 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Benton Harbor
Rosemont
Schaumburg
Lake Geneva
Naperville
Oak Brook
Delavan
Oakbrook Terrace
Gurnee
South Holland
Libertyville
Orland Park
Hoffman Estates
Beloit
Downers Grove
Rockford
Racine
Great Lakes
Janesville
Joliet

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

Discover the top 3 airlines that operate flights from San Antonio to O'Hare Intl. 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 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$97Average$221FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$235Average$391FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$287Average$441FlexibilityNo cancel feeOn-time69%

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