SAT - ORD

$129 Find Cheap Flights from San Antonio to Chicago O'Hare Airport - 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 San Antonio to O'Hare Intl departing on 9/28. 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

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$268
Typical prices: $336-$496
Frontier
Thu 10/29Tue 11/3
SAT - ORD • 1 stop
Cheapest non-stop
$285
Typical prices: $296-$475
American Airlines
Tue 8/25Tue 9/1
SAT - ORD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Qatar Airways economy stands out with a free checked bag included.
United Economy Plus adds up to six inches more legroom than standard economy.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $268 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with American Airlines and United Airlines. Average duration is 3h 03m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $233 (round-trip)
Shortest trip • 5h 04m (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 50% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 15% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Thu, Oct 29 - Tue, Nov 3
Frontier Logo
7:56 pm - 10:01 am
SAT
-
ORD
14h 05m
1 stop
Frontier Logo
11:06 am - 10:12 am
ORD
-
SAT
23h 06m
1 stop
$268Frontier
Fri, Sep 11 - Wed, Sep 16
Frontier Logo
11:08 am - 9:35 pm
SAT
-
ORD
10h 27m
1 stop
Frontier Logo
10:40 pm - 10:12 am
ORD
-
SAT
11h 32m
1 stop
$268Frontier
Thu, Oct 15 - Sat, Oct 17
Frontier Logo
10:41 pm - 11:57 am
SAT
-
ORD
13h 16m
1 stop
Frontier Logo
6:50 am - 9:46 pm
ORD
-
SAT
14h 56m
1 stop
$268Frontier
Tue, Aug 25 - Tue, Sep 1
American Airlines Logo
7:28 am - 10:35 am
SAT
-
ORD
3h 07mnonstop
American Airlines Logo
10:05 am - 12:53 pm
ORD
-
SAT
2h 48mnonstop
$285American Airlines
Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
5:27 pm - 8:27 pm
SAT
-
ORD
3h 00mnonstop
United Airlines Logo
1:30 pm - 4:31 pm
ORD
-
SAT
3h 01mnonstop
$285United Airlines
Sat, Oct 10 - Tue, Oct 13
American Airlines Logo
7:10 am - 10:10 am
SAT
-
ORD
3h 00mnonstop
American Airlines Logo
9:00 pm - 11:58 pm
ORD
-
SAT
2h 58mnonstop
$291American Airlines
Tue, Oct 27 - Sat, Oct 31
United Airlines Logo
1:25 pm - 4:24 pm
SAT
-
ORD
2h 59mnonstop
United Airlines Logo
7:49 pm - 10:57 pm
ORD
-
SAT
3h 08mnonstop
$291United Airlines
Mon, Aug 31 - Wed, Sep 2
United Airlines Logo
6:30 am - 9:29 am
SAT
-
ORD
2h 59mnonstop
United Airlines Logo
8:45 am - 11:52 am
ORD
-
SAT
3h 07mnonstop
$291United Airlines
Mon, Sep 21 - Thu, Sep 24
Multiple Airlines Logo
9:50 pm - 5:38 am
SAT
-
ORD
7h 48m
1 stop
Multiple Airlines Logo
7:11 am - 11:58 am
ORD
-
SAT
28h 47m
2 stops
$298Multiple Airlines
Tue, Aug 25 - Tue, Sep 1
Multiple Airlines Logo
8:26 pm - 1:36 pm
SAT
-
ORD
17h 10m
1 stop
Multiple Airlines Logo
8:05 am - 4:13 pm
ORD
-
SAT
32h 08m
2 stops
$305Multiple Airlines
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.

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

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

Flight prices are typical for this route right now.

Flights to Chicago O'Hare Intl Airport from San Antonio usually cost between $235 and $408 in September.
The lowest price found in the past 5 days was $268 on Frontier (Sep 11-Sep 16).

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 Saturdays and the most expensive ones on Sundays.

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 $339 (return) on average. On the other hand, the most expensive months are November and January, where the average cost of round-trip tickets is $467 and $462 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $407 on average.

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 50% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Expert advice

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

 
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
Stefanie Waldek

Stefanie Waldek

Expert on Qatar Airways, 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.

Duncan Madden

Duncan Madden

Expert on British Airways

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.

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.

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

March

Cheapest flight

$129
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 13% increase in price.
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 5 days, the lowest price for a flight from San Antonio to Chicago O'Hare Intl Airport was $129 for a one-way ticket and $268 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?

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

  • 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 $441 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 $396 and an overall rating of 7.1.

  • 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 $252 or less one-way and $387 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 3 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 10046 reviews
7.3Comfort
7.1Entertainment
8.1Crew
6.6Food
7.7Boarding
Airline reviews

Gluten free snack options and meals that offer both gluten free and dairy free.

8.0 ExcellentAnonymous, Jul 2026
PHX - ORD
Read more United Airlines reviews

Gluten free snack options and meals that offer both gluten free and dairy free.

Not a bad flight but a long delay boarding and taking off due to the pilot not arriving on time.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

Boarded early, left early, arrived 40 mins early! A win win for me!

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

Overall it was good. I missed my connection but I was put on another flight.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

I don't understand why they can't have charging ports on seats in 2023. They only offer it as a 'premium seat' service. It's ridiculous

Nothing, I wont be flying American Airlines again and will not be recommending anyone to fly American Airlines. It was the worst experience flying I've ever had.

My overall flight got delayed by an hour (30 mins late because of late arrival and 30 mins because there was no Jet bridge available), I was supposed to land in Chicago around 9:30 PM CT, but in actual came out of plane around 10:30 PM CT. It was so frustrating and suffocating to sit in plan on runway for around 30 mins.

Delayed flight more than I hour. When boarding we spent some additional time on the plane before takeoff ....

They lost my baggage and I am still struggling to the information and update

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

As a first class customer, there was no power the entire flight which limited my ability to work. I find this unacceptable. The first 11 rows on the left side of the plan were out. I was only offered the option to charge my phone which was not the issue because my laptop was out of power. I asked if there was anything that can be done for me, and the answer was, "no". I was not offered any type of compensation for this AA problem which caused me unnecessary stress due to inability to address business issues on an already challenging travel day. Flight attendants tried to reset the power once but that was the extent of their support. Very disappointing for the lack of expected services on a flight. Please contact me with customer focused response to this complaint.

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

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

3hour delay In the last 3 months i had 3 flights and 2 of these had a more than 2:40 hrs delayed

When you pay for Premium Economy on an 787 and you’re promised amenities for the extra money, you expect them to work. They didn’t. USB connector wouldn’t charge continuously. 120v outlet wouldn’t hold anything you plugged into it. The adapter would just fall out. The noise canceling headphones stopped noise cancelling in the first 15 minutes for EVERYONE. No one on the plane knew how to fix it so I couldn’t listen to any movies. I just put in my AirPods and went to sleep. Very unhappy with the crappy Panasonic entertainment system. I won’t buy premium again.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

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

Severe turbulence. Captain never came on to reassure passengers after things settled down.

We were delayed three times ,and that destroyed my plans, and reservations

The crew was delayed because they came on another flight that was delayed due to weather 10pm flight left at 1.30 am The airline made no effort to align alternate crew

Flying Frontier was a nightmare. From the booking through Kayak, checking in, departing and arriving, I will never recommend Kayak or Frontier.

I was singled out for being a Latina flying solo and the attendants took me out of line to put my luggage in the personal item bin to see if it would fly. Keep In mind I had just flown with the same luggage with no problem not even 5 days ago. The tag was sticking out a bit and the attendant was belligerent about charging me $100. I could not refuse because I didn’t wanna cause a scene. But today I felt targeted and embarrassed. I went online and found out that this happens a lot with this airline and to many minority women.

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

Information on your arrival and departure airports