ORD - SAT

$131 Find Cheap Flights from Chicago O'Hare Airport to San Antonio - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from O'Hare Intl to San Antonio departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$297
Typical prices: $291-$425
Frontier
Tue 9/22Thu 10/1
ORD - SAT • 1 stop
Cheapest non-stop
$304
Typical prices: $297-$410
American Airlines
Thu 10/8Tue 10/13
ORD - SAT • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
American Basic Economy is cheapest, but has late boarding and no free checked bags.
United Economy Plus adds up to six inches of legroom over standard economy.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $297 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with American Airlines and United Airlines. Average duration is 2h 56m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $208 (round-trip)
Shortest trip • 5h 39m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 14% price drop
Most popular
Good to know
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Flight Deals
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Flight Deals

Cheap Flights from O'Hare Intl to San Antonio (ORD-SAT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from O'Hare Intl to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from O'Hare Intl to San Antonio

Tue, Sep 22 - Thu, Oct 1
Frontier Logo
6:30 am - 7:25 pm
ORD
-
SAT
12h 55m
1 stop
Frontier Logo
12:39 pm - 12:23 am
SAT
-
ORD
11h 44m
2 stops
$297Frontier
Wed, Sep 2 - Wed, Sep 9
Frontier Logo
2:41 pm - 7:31 pm
ORD
-
SAT
28h 50m
1 stop
Frontier Logo
8:20 pm - 7:35 pm
SAT
-
ORD
23h 15m
2 stops
$298Frontier
Sat, Sep 5 - Wed, Sep 9
Frontier Logo
2:41 pm - 7:31 pm
ORD
-
SAT
28h 50m
1 stop
Frontier Logo
8:20 pm - 7:35 pm
SAT
-
ORD
23h 15m
2 stops
$298Frontier
Sat, Jan 30 - Wed, Feb 3
American Airlines Logo
11:00 am - 3:45 pm
ORD
-
SAT
4h 45m
1 stop
American Airlines Logo
10:57 am - 1:58 pm
SAT
-
ORD
3h 01mnonstop
$301American Airlines
Thu, Oct 22 - Tue, Oct 27
American Airlines Logo
9:00 pm - 11:58 pm
ORD
-
SAT
2h 58mnonstop
American Airlines Logo
7:00 am - 12:08 pm
SAT
-
ORD
5h 08m
1 stop
$301American Airlines
Tue, Sep 1 - Thu, Sep 3
United Airlines Logo
2:16 pm - 7:58 pm
ORD
-
SAT
5h 42m
1 stop
United Airlines Logo
12:55 pm - 3:55 pm
SAT
-
ORD
3h 00mnonstop
$301United Airlines
Thu, Aug 27 - Thu, Sep 3
United Airlines Logo
4:11 pm - 10:39 pm
ORD
-
SAT
6h 28m
1 stop
United Airlines Logo
12:55 pm - 3:55 pm
SAT
-
ORD
3h 00mnonstop
$307United Airlines
Thu, Nov 5 - Thu, Nov 12
United Airlines Logo
5:30 am - 10:46 am
ORD
-
SAT
5h 16m
1 stop
United Airlines Logo
1:25 pm - 4:24 pm
SAT
-
ORD
2h 59mnonstop
$307United Airlines
Sat, Jan 30 - Wed, Feb 3
Delta Logo
7:10 am - 1:22 pm
ORD
-
SAT
6h 12m
1 stop
Delta Logo
10:45 am - 6:32 pm
SAT
-
ORD
7h 47m
1 stop
$311Delta
Sat, Sep 5 - Sun, Sep 6
Delta Logo
3:25 pm - 9:04 pm
ORD
-
SAT
5h 39m
1 stop
Delta Logo
7:55 am - 2:20 pm
SAT
-
ORD
6h 25m
1 stop
$317Delta
Booking Insights

KAYAK's insights & trends for O'Hare Intl to San Antonio flights

Get data-powered insights and trends into flights from O'Hare Intl to San Antonio to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Chicago O'Hare Intl Airport to San Antonio?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Chicago O'Hare Intl Airport to San Antonio departing in September.

Flight prices are typical for this route right now.

Flights to San Antonio from Chicago O'Hare Intl Airport usually cost between $277 and $479 in September.
The lowest price found in the past 5 days was $297 on Frontier (Sep 22-Oct 1).

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to San Antonio?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to San Antonio clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to San Antonio on a Thursday and more expensive on a Sunday. On your return trip to Chicago O'Hare Airport, you should consider flying back on a Thursday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to San Antonio, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago O'Hare Intl Airport to San Antonio is August, where tickets cost $337 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is $447 and $447 respectively.

Can I save money by flying with a layover from Chicago O'Hare Intl Airport to San Antonio?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $473 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to San Antonio, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago O'Hare Intl Airport to San Antonio, you should book around 4 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Expert advice

Expert advice for your flight from O'Hare Intl to San Antonio

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and ORD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Brandon Schultz

Brandon Schultz

Expert on SAT

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Good to know

Low season

June

Cheapest flight

$131
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 14% increase in price.
Flight from Chicago O'Hare Airport to San Antonio

When to book flights from O'Hare Intl to San Antonio

Are your dates flexible? Find out the best times to travel from O'Hare Intl to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago O'Hare Airport to San Antonio flights

  • Which eco-friendly airline should I consider for my flight from Chicago O'Hare to San Antonio?

    To fly with an eco-friendly airline from Chicago O'Hare to San Antonio, consider United Airlines. United has taken strides towards attaining sustainability with initiatives such as using biofuel, investing in fuel-efficient aircraft, and carbon offset programs. Its Eco-Skies program focuses on significantly or fully reducing emissions and waste by the year 2050.

  • Can I conveniently fly from Chicago O'Hare to San Antonio with my furry friend?

    Certainly, you can fly conveniently from Chicago O'Hare to San Antonio with your furry friend if you are booking your flight with Southwest Airlines. The airline allow smaller pets like cats and dogs in-cabin if they have proper health documentation and are in the right carriers that fit under the seats. Southwest provides temperature- and pressure-controlled cargo areas for your larger pets at no extra cost.

  • Which cities can I connect to after deplaning from my Chicago O'Hare to San Antonio flight at San Antonio (SAT)?

    After landing from your Chicago O'Hare to San Antonio flight, you can easily connect to cities like Austin, Houston, and Corpus Christi with ease. Efficient ground transportation options such as car rentals, taxis, and possibly shuttle services make it convenient to travel to these neighboring destinations.

  • Can I rent a car after deplaning from my Chicago O'Hare to San Antonio flight at San Antonio (SAT)?

    Yes, you can conveniently rent a car after landing at SAT. At SAT, car rentals are in the Consolidated Rental Car Facility (CONRAC), easily accessible from Terminals A and B via a courtesy shuttle. Some car rental companies on site include Avis, Budget, and Enterprise.

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

    In the last 5 days, the lowest price for a flight from Chicago O'Hare Intl Airport to San Antonio was $131 for a one-way ticket and $297 for a round-trip.

  • Do I need a passport to fly between Chicago O'Hare Airport and San Antonio?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airlines offer Wi-Fi service onboard planes from Chicago O'Hare Airport to San Antonio?

    American Airlines, JetBlue, Alaska Airlines, and Alaska Airlines offer inflight Wi-Fi service on the Chicago O'Hare Airport to San Antonio flight route.

  • Which aircraft models fly most regularly from Chicago O'Hare Airport to San Antonio?

    The Airbus A319 is the aircraft model that flies most regularly on the Chicago O'Hare Airport to San Antonio flight route.

  • Which airline alliances offer flights from Chicago O'Hare Airport to San Antonio?

    Star Alliance, and oneworld are the airline alliances operating flights between Chicago O'Hare Airport and San Antonio, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Chicago O'Hare Airport to San Antonio?

    There are nonstop flights from Chicago O'Hare Airport to San Antonio on a daily basis.

  • Which is the best airline for flights from Chicago to San Antonio, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to San Antonio are United Airlines and American Airlines. With an average price for the route of $424 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $387 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Chicago O'Hare Airport to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago O'Hare Airport to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago O'Hare Airport to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from Chicago O'Hare Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago O'Hare Airport to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to Chicago O'Hare Airport with another airline. Booking your flights between Chicago O'Hare Airport and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago O'Hare Airport to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from Chicago O'Hare Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chicago O'Hare Intl Airport to San Antonio

  • Looking for a cheap flight? 25% of our users found flights on this route for $149 or less one-way and $367 or less round-trip.
  • Since most airlines with flights from Chicago O'Hare Airport (ORD) to San Antonio have at least a single layover, you are encouraged to include your layovers when budgeting for your trip. Some of the common layovers to include are Dallas/Fort Worth (DFW), Fort Lauderdale (FLL) and Orlando (MCO).
  • Among the best airlines to consider for your last-minute flight from Chicago to San Antonio via O'Hare Intl (ORD) and San Antonio (SAT) are American and United airlines. These two are among the few airlines offering the highest number of direct flights from ORD to SAT. They are, therefore, good options for travelers on a tight travel schedule.
  • Although most airlines offerings flights from Chicago O'Hare Airport to San Antonio highly consider Persons with Reduced Mobility (PRMs), American and Spirit Airlines are highly regarded. Besides offering priority boarding for PRMs, these airlines have a team of professionals trained to offer personalized assistance to PRMs board in the airports and on the flight.
  • For your convenient connections from downtown Chicago to O'Hare Intl (ORD) for your flight to San Antonio, you can consider the "L" train system. The Blue Line train provides a direct connection to ORD. It's the most efficient choice due to its frequent departures and consistent travel time. Buses like the 250 also serve the route, but the Blue Line offers quicker and more reliable service.
  • Delta Air Lines is an excellent choice for your family's flight from Chicago O'Hare to San Antonio. With its dedicated family seating zones, pre-boarding for families, and complimentary in-flight entertainment options, Delta ensures a stress-free and enjoyable travel experience for both parents and kids.

Prefer to fly direct from Chicago O'Hare Airport to San Antonio?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago O'Hare Intl to San Antonio.
Find which airlines fly direct from Chicago O'Hare Intl Airport to San Antonio Airport, which days they fly and book direct flights.

Direct departures

Chicago O'Hare Intl to San Antonio

Monday

American Airlines,United Airlines

American Airlines,United Airlines

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

American Airlines,United Airlines

American Airlines,United Airlines

Friday

American Airlines,United Airlines

American Airlines,United Airlines

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

American Airlines,United Airlines

American Airlines,United Airlines

See more direct flights

Direct returns

San Antonio to Chicago O'Hare Intl

Monday

American Airlines,United Airlines

American Airlines,United Airlines

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

American Airlines,United Airlines

American Airlines,United Airlines

Friday

American Airlines,United Airlines

American Airlines,United Airlines

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

American Airlines,United Airlines

American Airlines,United Airlines

See more direct flights

Reviews of the top 3 airlines serving from O'Hare Intl to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Chicago to San Antonio. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from O'Hare Intl to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10059 reviews
7.3Comfort
8.1Crew
7.1Entertainment
6.6Food
7.7Boarding
Airline reviews

It was hot and not as comfortable as the flight to Chicago. Must have been a different plane that needs to be worked on or replaced.

8.0 ExcellentArmedrest, Jul 2026
ORD - PAH
Read more United Airlines reviews

It was hot and not as comfortable as the flight to Chicago. Must have been a different plane that needs to be worked on or replaced.

The SFO lounge closes at 12 midnight. My flight took off at 2AM

It was extremely hot in the cabin the entire flight, vent air was worn

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

They need to improve their boarding process. Group 1 and/or paying first class passengers shouldn't be in the middle of boarding process

No access to the Wi-Fi, noisy group of people made it difficult for me to hear through my earbuds. Snacks and drinks - limited service when your seat is at the back of the plane - people up front are always served first and the back gets whatever is left. Not pleased.

Didn't make it dir to delays - no support from United staff

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

The seat was not even cleaned. It has full of cookie crums probably from last flight's passenger. Its basic expectation that, seats are clean.

I’ve got 31F seat and window seat . My 2 co passengers was AA crew members and they were very rude attitude and when I was going to use bathroom their gestures was very different and awkward and the guy beside me completely occupied the hand rest and I was really uncomfortable

Moved to earlier flight which unexpectedly had maintenance issues initially indicated as quick fix to ultimately plane changes. Moved back to original flight, also delayed. In all cases customer updates and communication very unclear, no updates on drivers for delays.

See prior comment about how Kayak mishandled my reservation and delayed my arrival by 6 hours.

The aircraft had several problems - from excess fuel to non operational ac. Two hours of delay in Chicago could have been avoided with proper planning and aircraft maintenance.

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

BAD. As a family could not sit together. The gate agent told us there was only one seat in the middle left, when we got on the plane the situation was very different with whole rows of seats empty

Good flights. Departure and arrivals were on time. DFW was a little problematic in that the Skytrain without prior notice bypassed the Echo terminal so that delayed my arrival at my connecting flight.

Had technical issue which delayed the flight period. Flight crew knew there was 5 passengers that the connecting flight was within 15 minutes once at the gate. Rather than identify the 5 passengers to assure they got first. The flight attended mentioned it but didn't assist to assure passengers with connecting flights off first. This caused a hardship and our party of 3 missed the connecting flight.

During the flight I suddenly felt very sick, and no one from the crew even tried to help me or check on my condition. They seemed completely indifferent and showed no concern for my well-being. I was very disappointed by the lack of care and compassion. I hope the airline improves its customer service and trains its crew to respond better when passengers need assistance.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

Better than expected. Staff were friendly and nice on both flights.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

I didn’t have enough time to catch my connecting flight and had to use a different Airline. I will be requesting a refund.

First time experience and though you'll pay for *everything* meaning bags, water/snacks, even a question with a service agent - - all in all, not a bad experience whatsoever.

I brought a ticket and car rental through Travelocity. There was no where to add a KTN. So I thought i’d add it by looking up ticket on frontier website. I tried 3 times with the frontier chat bot to add my KTN it never updated my boarding pass. So then I tried showing up early to do it in person at the airport. The first employee update my ktn in the system and gave me a new boarding pass. I was sent back by tsa to join regular line. Then I was told to add my Ktn. It would cost me $25 extra. Given the length of the cue I did pay. Congratulations! BUT I will NEVER fly frontier again. Plus the plane was very old. It had actual ashtrays and old looking tray backs. Worst travel experience ever. Im warning my friends and family not to use frontier ever.

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I like the easy check-in and boarding process. I love the non stop flight

Everything you need to know for your flight from O'Hare Intl to San Antonio

Information on your arrival and departure airports