SAT - ORD

$55 Find Cheap Flights from San Antonio to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Antonio to O'Hare Intl departing on 11/15. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Chicago, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Chicago, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$171
Overall average: $448
Multiple Airlines
Wed 11/12Sat 11/15
SAT - ORD • 1 stop
Cheapest non-stop
$297
Typical prices: $427-$573
American Airlines
Wed 12/3Sat 12/6
SAT - ORD • Non-stop
Our travelers' advice
AI-generated summary based on content written by travel experts
Consider Main Cabin Extra on American for perks.
Expect short security lines at San Antonio Airport.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Frontier
Cheapest • from $176 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 52% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 19% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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We hope you love your trip to O'Hare Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Antonio to O'Hare Intl 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 San Antonio to O'Hare Intl

Wed, Nov 12 - Sat, Nov 15
Multiple Airlines Logo
6:45 am - 7:28 amSAT-ORD
24h 43m1 stop
Multiple Airlines Logo
8:00 am - 5:10 pmORD-SAT
9h 10m1 stop
$171Multiple Airlines
Find Deal
Mon, Dec 1 - Thu, Dec 4
Multiple Airlines Logo
8:33 pm - 6:46 pmSAT-ORD
22h 13m2 stops
Multiple Airlines Logo
7:00 am - 2:11 pmORD-SAT
7h 11m1 stop
$172Multiple Airlines
Find Deal
Wed, Dec 3 - Sat, Dec 6
Multiple Airlines Logo
8:33 pm - 1:08 pmSAT-ORD
16h 35m2 stops
Multiple Airlines Logo
2:26 pm - 7:55 amORD-SAT
17h 29m1 stop
$174Multiple Airlines
Find Deal
Fri, Nov 14 - Sun, Nov 16
Frontier Logo
5:35 pm - 12:11 amSAT-ORD
6h 36m1 stop
Frontier Logo
6:00 am - 7:30 pmORD-SAT
13h 30m1 stop
$176Frontier
Find Deal
Thu, Nov 13 - Tue, Nov 18
Frontier Logo
10:46 pm - 11:30 amSAT-ORD
36h 44m2 stops
Frontier Logo
6:05 pm - 6:45 pmORD-SAT
24h 40m1 stop
$180Frontier
Find Deal
Fri, Jan 9 - Mon, Jan 12
Spirit Airlines Logo
6:00 am - 5:04 pmSAT-ORD
11h 04m1 stop
Spirit Airlines Logo
10:18 am - 10:27 pmORD-SAT
12h 09m1 stop
$190Spirit Airlines
Find Deal
Thu, Feb 19 - Sun, Feb 22
Spirit Airlines Logo
6:00 am - 5:04 pmSAT-ORD
11h 04m1 stop
Spirit Airlines Logo
10:18 am - 10:27 pmORD-SAT
12h 09m1 stop
$195Spirit Airlines
Find Deal
Sun, Nov 9 - Fri, Nov 14
Frontier Logo
10:46 pm - 9:48 pmSAT-ORD
23h 02m1 stop
Frontier Logo
10:43 pm - 3:35 pmORD-SAT
16h 52m1 stop
$202Frontier
Find Deal
Thu, Dec 11 - Mon, Dec 15
Spirit Airlines Logo
3:10 pm - 9:48 pmSAT-ORD
6h 38m1 stop
Spirit Airlines Logo
3:26 pm - 11:26 pmORD-SAT
8h 00m1 stop
$208Spirit Airlines
Find Deal
Fri, Nov 14 - Mon, Nov 17
Frontier Logo
8:25 pm - 11:30 amSAT-ORD
15h 05m2 stops
Frontier Logo
5:05 am - 4:40 pmORD-SAT
11h 35m1 stop
$211Frontier
Find Deal
Booking Insights

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

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

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

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

When flying from San Antonio to Chicago O'Hare Airport, you should consider leaving on a Thursday and avoid Sundays if you are looking for the best rates. For your return to San Antonio, you’ll find the best rates on Wednesdays and the most expensive ones on Mondays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Antonio to Chicago O'Hare Intl Airport, 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 San Antonio to Chicago O'Hare Intl Airport is September, where tickets cost $322 (return) on average. On the other hand, the most expensive months are November and March, where the average cost of round-trip tickets is $448 and $447 respectively.

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

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.

No, with an average price for the route of $336, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Antonio to Chicago O'Hare Intl Airport, 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 San Antonio to Chicago O'Hare Intl Airport, you should book around 4 weeks before departure, which saves you about 52% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Expert advice

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

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-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.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Qatar Airways

All economy tickets include a free checked bag, a standout feature.


Economy seats have 31 to 33 inches of pitch and seatback TVs.

British Airways

BA's economy fares include a carry-on bag, unlike many budget carriers.


Check plane type for legroom; some BA planes offer only 29 inches.

American Airlines

Consider Main Cabin Extra for early boarding and complimentary drinks on longer flights.


Download the American Airlines app for in-flight entertainment access on domestic flights.

United Airlines

Upgrade to Economy Plus for up to six inches more legroom than standard economy.


Purchase Priority Boarding to avoid gate-checking your carry-on bag.

Airports
SAT

Expect short security lines at SAT, with waits rarely exceeding 15 minutes, making it a breeze for early morning flights.

Read more about SATby Brandon Schultz
ORD

Take the CTA Blue Line from ORD to downtown Chicago in about 45 minutes, avoiding traffic and offering free transfers to other lines.

Read more about ORDby Stefanie Waldek
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Qatar Airways, United Airlines and ORD

Stefanie Waldek

Stefanie Waldek

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.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

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.

Read more
Brandon Schultz

Brandon Schultz

Expert on SAT

Brandon Schultz

Brandon Schultz

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.

Read more

Good to know

Low seasonJanuary
Cheapest flight$55
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from San Antonio to Chicago O'Hare Airport

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

Are your dates flexible? Find out the best times to travel from San Antonio to O'Hare Intl 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 San Antonio to Chicago O'Hare Airport flights

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

    In the last 3 days, the lowest price for a flight from San Antonio to Chicago O'Hare Intl Airport was $55 for a one-way ticket and $171 for a round-trip.

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

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

  • Which airports will I be using when flying from San Antonio to Chicago O'Hare Airport?

    When flying out of San Antonio you will be using San Antonio. You will be landing at Chicago O'Hare Airport, also known as Chicago O'Hare Intl.

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

    All the following airlines offer inflight Wi-Fi service on the San Antonio to Chicago O'Hare Airport flight route: American Airlines, Delta, United Airlines, Lufthansa, JetBlue, SWISS, and Air Canada.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from San Antonio to Chicago are United Airlines and American Airlines. With an average price for the route of $471 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 $394 and an overall rating of 7.2.

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

    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 San Antonio to Chicago O'Hare Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport from San Antonio 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 San Antonio to Chicago O'Hare Airport?

    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 Chicago O'Hare Airport with an airline and back to San Antonio with another airline. Booking your flights between San Antonio and ORD 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 San Antonio to Chicago O'Hare Airport?

    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 Chicago O'Hare Airport from San Antonio 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 San Antonio to Chicago O'Hare Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $198 or less one-way and $375 or less round-trip.

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

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

Direct departures

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

Direct returns

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

Reviews of the top 4 airlines serving from San Antonio to O'Hare Intl

 
See real verified KAYAK customer reviews for airlines flying from San Antonio to Chicago. 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 San Antonio to O'Hare Intl? 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 8998 reviews
7.3Comfort
7.7Boarding
6.6Food
7.1Entertainment
8.1Crew
Airline reviews

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

10.0 ExcellentDr. Joseph, Oct 2025STL - ORD
Read more United Airlines reviews

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

Salina to travers city was great! But the sept 24 Tranverse city was not! Traverse city to chichago was cancelled, i went to Denver & got to Salina 6 hours later!

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

Excellent - explanations were clear staff was nice and flight was comfortable

Lost bag and 2 days no word leaving for cruise no clothes or stuff

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

Pretty good. The food was just mediocre, the boarding and crew were good.

Excellent experience when I am looking for a budget airline where the main expectation is getting me from point A to point B with no frills.

The entire staff from check in agents to flight attendants were pleasant and professional. Would suggest a complimentary water.

Had to deplane for undisclosed mechanical issue. Landed in Chicago 3 hours late. Food voucher at FLL came just as we were recording. Crew and agents were troopers--better than Spirit last night.

We spent 5 1/2 hours at Ohare cause our flight was diverted cause of rain in the area. We missed appts that we had set on Tuesday and cause we were flying back the next day on the 7am flight we had no time to reschedule anything. Other airlines were landing and taking off fine having no issues. It was only Spirit. Very frustrating flight and I understand why the flights are only around 25-30% full.

Just total easy flight experience!! What could you do better..? Hmmm..? There was nothing I can remember. Spirit was a far more comfortable and easy process than American, United & Delta. I'll always look for Spirit and I've told a few people about, since flying this past trip!! I'm a SPIRIT FAN!! Thank You, SPIRIT AIRLINES!! Very, VERY well done, 100%!! See you...SOON!! -Best, Linda R.

Spirit is a very uncomfortable travel experience. It’s cheap but you are squeezed into the seats like canned meat.

The seat belt was lengthy enough that I did not need an extender. Courteous and helpful flight attendants.

As expected. Nothing jumps out at me as bad or wrong, but the flight was fine. No complaints with pilot or crew. The flight left on time and arrived earlier than stated. Overall, I will continue to plan on flying with Spirit.

Unfortunately, spirits crew had us boarding and parking the plane often, would wait long periods of time before allowing the people attending the flight on the plane to know what was going on this caused for my plane to not only get diverted but then canceled at an airport 2 hours away and basically stranded with charter buses MAYBE being hired. I was left with no choice but to stay overnight and use a comp room in Altantic City to then arrive home the next day. This trip was the first time seeing my partner since he joined the Air Force and this stressful ride caused unwarranted tears on what was supposed to be an east flight home. I understand weather is unpredictable but to have passengers deboard to then reboard an hour later to taxi on the runway for another hour to then basically leave an entire fight stranded. I waited almost 30 minutes at the airport and not one employee could tell me about a charter bus so I had to leave and make accommodations to stay overnight and get a ride home.

Horrible considering I didn’t go and I bought travel insurance and I didn’t receive a refund.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

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.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

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

Information on your arrival and departure airports

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