For a quick departure, use the free shuttle train between terminals at ORD to avoid long walks.
$80+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAT
Oct 15 — Oct 221
1 adult, Economy
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Find cheap flights from O'Hare Intl to San Antonio with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Chicago O'Hare Intl to San Antonio are usually found in August or September, booked 41 days in advance, depart on a Wednesday or Thursday and return on a Thursday
Cheap 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 September 15, 2025.
Round-trip from | $158 (Frontier) |
|---|---|
One-way from | $80 (Cheapflightsfares) |
Popular in | January |
Cheapest in | August |
Average price | $356 |
Good round-trip deal | $307 or less |
Good one-way deal | $178 or less |
Find flight deals from O'Hare Intl to San Antonio
Cheapest flights from O'Hare Intl to San AntonioExplore 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 September 15, 2025.
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 September 15, 2025.
This Frontier deal was found by Cheapflights users on 9/15. 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 10/166:50 amORD - SAT
1 stop12h 51mFrontier
Thu 10/2312:09 pmSAT - ORD
1 stop11h 44mFrontier
Deal found 9/15![Frontier logo]()
$158
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:10 amORD - SAT
1 stop5h 38mFrontier
Fri 9/267:25 pmSAT - ORD
1 stop26h 03mFrontier
Deal found 9/15![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Tue 10/217:15 amORD - SAT
1 stop7h 59mFrontier
Thu 10/308:43 pmSAT - ORD
1 stop27h 33mFrontier
Deal found 9/13![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 9/15. 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.
Mon 9/295:10 amORD - SAT
1 stop11h 20mFrontier
Thu 10/211:33 amSAT - ORD
2 stops11h 47mFrontier
Deal found 9/15![Frontier logo]()
$187
This Priceline deal was found by Cheapflights users on 9/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2610:25 amORD - SAT
1 stop6h 05mFrontier
Mon 9/295:40 pmSAT - ORD
1 stop6h 30mFrontier
Deal found 9/13![Frontier logo]()
$188
This Frontier deal was found by Cheapflights users on 9/13. 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 10/25:10 amORD - SAT
1 stop5h 38mFrontier
Mon 10/68:20 pmSAT - ORD
2 stops17h 27mFrontier
Deal found 9/13![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Thu 11/66:00 amORD - SAT
1 stop13h 30mFrontier
Sat 11/83:12 pmSAT - ORD
1 stop9h 00mFrontier
Deal found 9/14![Frontier logo]()
$192
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/278:25 amORD - SAT
1 stop6h 02mFrontier
Sat 10/43:22 pmSAT - ORD
1 stop6h 06mFrontier
Deal found 9/14![Frontier logo]()
$193
This Flightnetwork deal was found by Cheapflights users on 9/12. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/225:10 amORD - SAT
1 stop11h 20mFrontier
Mon 9/228:20 pmSAT - ORD
1 stop25h 08mFrontier
Deal found 9/12![Frontier logo]()
$195
This Priceline deal was found by Cheapflights users on 9/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:25 amORD - SAT
1 stop6h 02mFrontier
Mon 9/225:40 pmSAT - ORD
1 stop6h 30mFrontier
Deal found 9/13![Frontier logo]()
$196
This Booking.com deal was found by Cheapflights users on 9/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/211:03 pmORD - SAT
1 stop24h 13mFrontier
Mon 9/225:40 pmSAT - ORD
1 stop6h 30mFrontier
Deal found 9/12![Frontier logo]()
$198
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/710:43 pmORD - SAT
1 stop16h 52mMultiple Airlines
Wed 11/124:16 pmSAT - ORD
1 stop7h 26mMultiple Airlines
Deal found 9/14![Multiple Airlines logo]()
$199
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 September 15, 2025.
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
O'Hare Intl
Fly to
San Antonio
Route
Depart
Return
Price
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Tue 10/21
4:05 pm-12:20 am
1 stop8h 15m
San Antonio
Tue 10/28
6:41 am-2:55 pm
1 stop8h 14m
$217
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Fri 12/12
7:52 pm-10:59 pm
Nonstop3h 07m
San Antonio
Sun 12/14
7:00 am-9:46 am
Nonstop2h 46m
$245
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Wed 10/22
11:25 am-9:25 pm
1 stop10h 00m
San Antonio
Wed 10/29
8:45 am-3:20 pm
2 stops6h 35m
$296
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Wed 10/8
7:10 am-12:45 pm
1 stop5h 35m
San Antonio
Sat 10/11
5:00 pm-8:02 pm
Nonstop3h 02m
$327
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Wed 10/8
7:10 am-12:45 pm
1 stop5h 35m
San Antonio
Sat 10/18
6:45 am-9:45 am
Nonstop3h 00m
$327
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Tue 10/14
7:50 pm-10:55 pm
Nonstop3h 05m
San Antonio
Fri 10/17
5:09 pm-8:00 pm
Nonstop2h 51m
$346
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Thu 10/9
2:20 pm-9:29 pm
1 stop7h 09m
San Antonio
Sat 10/11
5:00 pm-8:02 pm
Nonstop3h 02m
$366
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Sat 10/18
1:00 pm-4:06 pm
Nonstop3h 06m
San Antonio
Sun 10/19
5:09 pm-8:00 pm
Nonstop2h 51m
$382
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Wed 10/15
7:50 pm-10:55 pm
Nonstop3h 05m
San Antonio
Sun 10/19
5:09 pm-8:00 pm
Nonstop2h 51m
$382
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Wed 10/15
7:50 pm-10:55 pm
Nonstop3h 05m
San Antonio
Sun 10/26
7:05 am-9:51 am
Nonstop2h 46m
$382
Showing 1-10 of 21 results
The best insider tips for Chicago O'Hare Intl Airport to San Antonio flights
Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to San Antonio trip
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
Prices
Airlines
More
How far ahead should I book a flight from Chicago O'Hare Intl Airport to San Antonio?
Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to San Antonio. Price data was last updated on September 12, 2025.
The best time to book flights from Chicago O'Hare Intl Airport to San Antonio is 41 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 $295). Flying from Chicago O'Hare Intl Airport to San Antonio in March is currently the most expensive (average of $376). 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 September 15, 2025.
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 32% on your trip compared to booking a flight in the morning.
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 September 14, 2025.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to San Antonio flight should consider departing on Tuesday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
What’s the top layover airport for flights from Chicago O'Hare Intl Airport to San Antonio?
Share of 1-stop round-trip flights from Chicago O'Hare Intl Airport to San Antonio chosen by Cheapflights users in the past 12 months, using the same layover each way.
Orlando (MCO) – chosen by Cheapflights users on 40% of 1-stop itineraries from Chicago O'Hare Intl Airport to San Antonio on Cheapflights.
What’s the fastest layover option from Chicago O'Hare Intl Airport to San Antonio?
Shortest average travel time for 1-stop one-way flights from Chicago O'Hare Intl Airport to San Antonio, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Orlando (MCO) have the shortest average one-way travel time for 1-stop routes: 9h 22m.
What’s the fastest layover option from Chicago O'Hare Intl Airport to San Antonio?
Shortest average travel time for 1-stop one-way flights from Chicago O'Hare Intl Airport to San Antonio, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Orlando (MCO) have the shortest average one-way travel time for 1-stop routes: 9h 22m.
Which airport typically offers the quickest layover for flights from Chicago O'Hare Intl Airport to San Antonio?
Average layover duration for 1-stop one-way flights from Chicago O'Hare Intl Airport to San Antonio, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Orlando (MCO) offer the fastest connection on this route, with an average layover time of 2h 57m.
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 September 15, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines 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.
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
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.
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
Kerrville
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Alternative routes for O'Hare Intl to San Antonio
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from O'Hare Intl to San Antonio
Discover the top 5 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 September 15, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$125 | Average$174 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$172 | Average$288 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$194 | Average$400 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$203 | Average$584 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$261 | Average$474 | FlexibilityNo cancel fee | On-time69% |