For a quick departure, use the free shuttle train between terminals at ORD to avoid long walks.
$67+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAT
Jan 15 — Jan 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
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 December 16, 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 December 16, 2025.
This Frontier deal was found by Cheapflights users on 12/15. 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.
Wed 12/246:05 amORD - SAT
1 stop10h 56mFrontier
Thu 1/810:13 amSAT - ORD
1 stop8h 32mFrontier
Deal found 12/15![Frontier logo]()
$233
This Frontier deal was found by Cheapflights users on 12/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/209:55 pmORD - SAT
1 stop11h 28mFrontier
Mon 1/1212:21 pmSAT - ORD
1 stop9h 11mFrontier
Deal found 12/14![Frontier logo]()
$254
This CheapOair deal was found by Cheapflights users on 12/16. 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.
Wed 12/3111:23 amORD - SAT
1 stop6h 53mFrontier
Thu 1/16:45 amSAT - ORD
1 stop17h 27mFrontier
Deal found 12/16![Frontier logo]()
$269
This Gotogate deal was found by Cheapflights users on 12/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 amORD - SAT
1 stop11h 01mMultiple Airlines
Mon 1/126:30 amSAT - ORD
1 stop11h 22mMultiple Airlines
Deal found 12/14![Multiple Airlines logo]()
$278
This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:05 amORD - SAT
1 stop10h 56mFrontier
Tue 12/3012:18 pmSAT - ORD
1 stop11h 54mFrontier
Deal found 12/15![Frontier logo]()
$284
This Expedia deal was found by Cheapflights users on 12/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amORD - SAT
1 stop6h 14mFrontier
Wed 12/316:45 amSAT - ORD
1 stop17h 27mFrontier
Deal found 12/16![Frontier logo]()
$288
This Expedia deal was found by Cheapflights users on 12/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:05 amORD - SAT
1 stop10h 56mFrontier
Sun 12/286:45 amSAT - ORD
1 stop17h 27mFrontier
Deal found 12/14![Frontier logo]()
$293
This American Airlines deal was found by Cheapflights users on 12/16. 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 12/312:50 pmORD - SAT
Nonstop3h 01mAmerican Airlines
Thu 1/16:00 amSAT - ORD
Nonstop2h 51mAmerican Airlines
Deal found 12/16![American Airlines logo]()
$301
This Frontier deal was found by Cheapflights users on 12/13. 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.
Sat 12/209:55 pmORD - SAT
1 stop11h 28mFrontier
Thu 1/12:09 pmSAT - ORD
1 stop10h 03mFrontier
Deal found 12/13![Frontier logo]()
$304
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:00 amORD - SAT
Nonstop3h 14mUnited Airlines
Wed 12/315:59 pmSAT - ORD
1 stop4h 38mUnited Airlines
Deal found 12/14![United Airlines logo]()
$311
This Frontier deal was found by Cheapflights users on 12/15. 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.
Fri 12/196:00 amORD - SAT
1 stop11h 01mFrontier
Mon 12/2912:18 pmSAT - ORD
1 stop11h 54mFrontier
Deal found 12/15![Frontier logo]()
$318
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 December 16, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $176 (Super.com) |
One-way from | $67 (Mytrip) |
Popular in | March |
Cheapest in | August |
Average price | $398 |
Good round-trip deal | $350 or less |
Good one-way deal | $227 or less |
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 December 16, 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
Thu 1/1
5:49 am-1:17 pm
1 stop7h 28m
San Antonio
Wed 1/7
2:05 pm-4:57 pm
Nonstop2h 52m
$279
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Sat 2/28
9:05 am-12:22 pm
Nonstop3h 17m
San Antonio
Sat 3/7
7:00 am-9:50 am
Nonstop2h 50m
$312
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Fri 1/16
8:00 pm-11:15 pm
Nonstop3h 15m
San Antonio
Sun 1/18
4:43 pm-11:59 pm
1 stop7h 16m
$334
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Thu 1/8
9:04 am-12:24 pm
Nonstop3h 20m
San Antonio
Wed 1/14
9:00 am-11:51 am
Nonstop2h 51m
$334
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Wed 2/25
1:05 pm-4:29 pm
Nonstop3h 24m
San Antonio
Sun 3/1
7:00 am-9:50 am
Nonstop2h 50m
$352
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Sat 2/28
2:03 pm-10:55 pm
1 stop8h 52m
San Antonio
Sat 3/7
8:00 am-2:10 pm
1 stop6h 10m
$357
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Fri 1/16
1:55 pm-8:44 pm
1 stop6h 49m
San Antonio
Mon 1/19
2:05 pm-4:57 pm
Nonstop2h 52m
$377
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Fri 3/13
7:05 am-12:42 pm
1 stop5h 37m
San Antonio
Wed 3/18
6:30 am-11:35 am
1 stop5h 05m
$387
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Thu 2/19
9:05 am-12:22 pm
Nonstop3h 17m
San Antonio
Sun 2/22
7:00 am-9:50 am
Nonstop2h 50m
$387
ChicagoSan Antonio
ORD - SAT
ORDSAT
Chicago O'Hare Intl
Sun 1/18
9:04 am-12:24 pm
Nonstop3h 20m
San Antonio
Thu 1/22
4:04 pm-9:26 pm
1 stop5h 22m
$394
Showing 1-10 of 24 results
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 December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-San Antonio flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Chicago O'Hare Intl Airport-San Antonio flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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
Prices
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 December 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, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Antonio (average of $73). Flying from Chicago O'Hare Intl Airport to San Antonio in September is currently the most expensive (average of $154). 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 December 16, 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 20% 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 December 13, 2025.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to San Antonio flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday afternoons 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 cheapest layover airport for flights from Chicago O'Hare Intl Airport to San Antonio?
Average round-trip fare for 1-stop flights from Chicago O'Hare Intl Airport to San Antonio, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Fort Lauderdale (FLL) is the most affordable 1-stop option, with an average round-trip price of $227.
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.
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
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 December 16, 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.
Comfort
8.0
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
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 December 16, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$196 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$172 | Average$259 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$201 | Average$441 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$203 | Average$599 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$213 | Average$389 | FlexibilityNo cancel fee | On-time71% |