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Find cheap flights from San Antonio to Illinois from $70

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 Illinois departing on 5/18. 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
0 bags
Sat 6/1
Sat 6/8

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Best Illinois Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
Chicago1 stop$95
Moline
Moline1 stop$226
Peoria
Peoria1 stop$328
Bloomington
Bloomington1 stop$288
Champaign
Champaign1 stop$393
Springfield
Springfield2 stops$327
St. Louis
St. Louis1 stop$145

Good to know

Low season

January

High season

December

Cheapest flight

$70
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from San Antonio to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from San Antonio to Illinois?

    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 Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois 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 Illinois?

    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 Illinois with an airline and back to San Antonio with another airline.

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

    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 Illinois from San Antonio up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from San Antonio to the following destinations at these prices or less: Chicago $196 one-way - $376 round-trip
  • Morning departure is around 7% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from San Antonio to Illinois

 
Need help choosing which airline to fly with from San Antonio to Illinois? 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.
8.0
DeltaOverall score based on 10858 reviews
8.2Boarding
7.4Food
8.6Crew
8.0Entertainment
7.9Comfort
Airline reviews

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

8.0 ExcellentAnonymous, May 2024ATL - ATW
Read more about Delta reviews

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

The plane was dirty and the in seat air wasn't blowing as planes usually do.

I was told we'd have a hot breakfast option in first class, so I chose not get a hot breakfast. It was a very strange meal, but the fresh fruit was very good quality. Service was excellent from ORD to ELP. No service from MBS to ORD, not even water. However, when flying American from FNT to ORD, which is a shorter flight, they at least pass out snacks and offer water.

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

The customer service was excellent! Check-in, baggage check-in, boarding, the flight went very smooth.

The flight was delayed instead of leaving at 11 it left at 12.20

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Good movies, iffy pay WiFi, food ok- on time though and that was great!

Awful…flight was delayed more than 12hrs, missed all connections to Fort Wayne, IN, had to get flight to another city 2 hours from my destination, flight was again delayed by 40 mins because they did not have enough fuel, again missed a connection, finally arrived in Indiana at 11pm…but before my 2 hour drive home, ay, no Five That Our Luggage Never Made On The plane and Still In Chicago

Boarding was friendly and quick. While the plane model was older with no live tv, the entertainment was full of movies and tv shows. All food was available. Pilots were very communicative with status of the flight. Flight landed on time.

Flight was delayed by over an hour and gate checked bags took 15 minutes to be delivered to the jet bridge.

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

The flight got canceled due to mechanical issues, and he to be rebooked and missed my appointments for that day

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

The only problem experienced was a ground stop in Chicago due to weather. But the crew handled everything professionally. They prioritized rebooking those passengers who had connecting flights and then deplaning the other passengers. When the hold was lifted, they efficiently re-boarded all the passengers so that we could depart before our departure limit expired.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Turn on the heat. Flight was way too cold from Arizona to Chicago.

I had no legroom, although I paid for extra legroom. I could barely put my bag in front of my feet and under the seat. The Wi-Fi was horrible. In fact the flight attendant said that they had to reboot it and see if it was going to work and never did.

The seat are terrible. Don’t even think of sleeping on a Spirit flight. The kids that run the plane aka flight attendants are pretty rude and straight forward. They get the job done but without class.

I had a death in my family and booked my flight on Spirit. My flight was cancelled the morning of my flight, no explanation, no help to rebook, nobody to talk to. The next available flight was 2days later !!!! Terrible airline, will NEVER fly with them again!

Terrible as usual!!!! Very unprofessional and rude flight attendants! You get what you pay for! HORRIBLE

They took a horrible route with a lot of turbulence and I eneded up getting sick. Even if the flight takes longer. Don't put people life at risk just to get to the airport on time.

Every thing was fine ,low price,easy on time ,clean, good staff, really no issues

Had to board plan 2x due to lack of security check after 1st boarding

Miserable. The crew was rude, the flight was delayed 5 hours for mechanical reasons and then “weather” even though other planes were leaving.

They kept Changing the flight times. It was delayed several times and at one point it was supposed to depart at 3.40am! At which point we ended up staying overnight and booked long a separate United flight for early morning departure. The spirit flight then got moved up and left at 1.30 in the morning when it was supposed to leave at 9.40pm the night before.

Horrible. Delay after delay. People yelling and making obseen gestures!

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

I paid for extra leg room. The flimsy plastic seat underneath the floatation seat did not line up with the arm rests. It seemed as if the plastic part was zip tied on but immovable. This caused severe uncomfortable for the duration of the flight.

Plane was clean but they do not allow bag drop until 1 hour before flight. Just encouraging late fees and other issues. The worst I have experienced. Total hostage situation, pay or you miss your flight.

Everything was good, and most importantly on time. They have been extremely tardy in some of my flights

I had to cancel within 1hour of the reservation an they put you through hell to . no live customer service desk. I'm handy caped and they make it almost impossible to cancel. They are steeling my money. You should not have that airline on your site. Contact me and I will give you all info. Of what the are doing to me just notable treatment they are set up like that to take people

Horrible flight, rude crew, someone had so mu h perfume on breathing was difficult.

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.

Book cheap flights from San Antonio to Illinois

Recent round-trip flight deals

5/29Wed
1 stopSpirit Airlines
9h 21mSAT-ORD
6/5Wed
1 stopSpirit Airlines
7h 05mORD-SAT
$95
5/29Wed
2 stopsSpirit Airlines
25h 57mSAT-ORD
6/5Wed
1 stopSpirit Airlines
7h 05mORD-SAT
$109
5/25Sat
1 stopFrontier
10h 12mSAT-ORD
5/28Tue
1 stopFrontier
17h 54mORD-SAT
$139
5/20Mon
1 stopFrontier
12h 23mSAT-STL
5/21Tue
1 stopFrontier
9h 39mSTL-SAT
$145
6/12Wed
1 stopDelta
7h 49mSAT-MLI
6/18Tue
1 stopDelta
6h 42mMLI-SAT
$226
8/24Sat
1 stopDelta
5h 05mSAT-BMI
8/27Tue
1 stopDelta
6h 50mBMI-SAT
$288
9/7Sat
1 stopUnited Airlines
7h 07mSAT-PIA
9/11Wed
1 stopUnited Airlines
5h 33mPIA-SAT
$328
6/12Wed
1 stopAmerican Airlines
6h 48mSAT-MLI
6/18Tue
2 stopsAmerican Airlines
9h 44mMLI-SAT
$332
9/7Sat
2 stopsUnited Airlines
9h 46mSAT-PIA
9/11Wed
1 stopUnited Airlines
5h 33mPIA-SAT
$333
8/5Mon
1 stopAmerican Airlines
6h 09mSAT-BMI
8/9Fri
2 stopsAmerican Airlines
8h 25mBMI-SAT
$341

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Recent one-way flight deals

5/18Sat
1 stopFrontier
10h 12mSAT-ORD
$70
5/18Sat
1 stopFrontier
9h 27mSAT-MDW
$70
5/18Sat
2 stopsSpirit Airlines
18h 33mSAT-ORD
$72
6/4Tue
1 stopSpirit Airlines
9h 55mSAT-ORD
$78
8/20Tue
nonstopAmerican Airlines
2h 54mSAT-ORD
$171
5/25Sat
nonstopAmerican Airlines
2h 47mSAT-ORD
$174
6/18Tue
1 stopDelta
7h 02mSAT-MDW
$176
5/21Tue
1 stopDelta
7h 27mSAT-MDW
$196
6/17Mon
nonstopUnited Airlines
2h 55mSAT-ORD
$204
5/21Tue
nonstopUnited Airlines
2h 47mSAT-ORD
$207

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Last minute flights from San Antonio to Illinois

Last minute flight, train and bus deals

5/6Mon
multi-stopFrontier
6h 56mSAT-ORD
5/9Thu
multi-stopFrontier
27h 32mORD-SAT
$234
5/6Mon
multi-stopFrontier
14h 00mSAT-MDW
5/9Thu
multi-stopFrontier
21h 19mMDW-SAT
$235
5/7Tue
multi-stopDelta
5h 35mSAT-MLI
5/11Sat
multi-stopDelta
5h 12mMLI-SAT
$345
5/7Tue
multi-stopDelta
6h 01mSAT-MLI
5/11Sat
multi-stopDelta
5h 12mMLI-SAT
$346
5/6Mon
multi-stopSpirit Airlines
27h 51mSAT-ORD
5/9Thu
multi-stopSpirit Airlines
27h 34mORD-SAT
$367
5/6Mon
multi-stopSpirit Airlines
29h 49mSAT-ORD
5/9Thu
multi-stopSpirit Airlines
27h 34mORD-SAT
$387
5/7Tue
multi-stopUnited Airlines
6h 58mSAT-MLI
5/11Sat
multi-stopUnited Airlines
9h 59mMLI-SAT
$411
5/7Tue
multi-stopUnited Airlines
7h 47mSAT-MLI
5/11Sat
multi-stopUnited Airlines
9h 58mMLI-SAT
$416
5/4Sat
multi-stopAmerican Airlines
8h 10mSAT-STL
5/5Sun
multi-stopAmerican Airlines
7h 39mSTL-SAT
$601
5/3Fri
multi-stopAmerican Airlines
6h 34mSAT-BMI
5/6Mon
multi-stopAmerican Airlines
9h 32mBMI-SAT
$601

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San Antonio - Illinois Flights

Departure:

San Antonio (SAT)United States

Return flight deals:

Illinois - San Antonio

Cabin classes:

$684
$424
$1,541
$271