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Find cheap flights from San Antonio to Illinois from $58

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 6/11. 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
Thu 6/27
Thu 7/4

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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$116
Moline
Moline1 stop$262
Peoria
Peoria1 stop$312
Bloomington
Bloomington1 stop$313
Champaign
Champaign1 stop$386
St. Louis
St. Louis1 stop$192

Good to know

Low season

February

High season

June

Cheapest flight

$58
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 3% lower on average.
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 $203 one-way - $396 round-trip
  • Morning departure is around 38% more expensive 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 10502 reviews
8.2Boarding
7.4Food
7.9Comfort
8.6Crew
8.0Entertainment
Airline reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

10.0 ExcellentMichael, May 2024SJC - ATL
Read more about Delta reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

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.

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.

The CX617 from HK to BKK was delayed more than 1.5 hours.

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.

Crew was nice, explained emergency protocol very well. Flight took off and arrived on time. Pilot explained the small delay that occurred with docking and providing updates. I would definitely fly spirit again.

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.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Well I mean u get what u pay for so 🤷‍♂️

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

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.

Book cheap flights from San Antonio to Illinois

Recent round-trip flight deals

9/10Tue
1 stopSpirit Airlines
11h 37mSAT-ORD
9/16Mon
1 stopSpirit Airlines
29h 48mORD-SAT
$116
9/21Sat
1 stopSpirit Airlines
18h 09mSAT-ORD
9/28Sat
1 stopSpirit Airlines
17h 08mORD-SAT
$142
6/12Wed
1 stopFrontier
10h 45mSAT-MDW
6/15Sat
1 stopFrontier
8h 22mMDW-SAT
$156
6/12Wed
1 stopFrontier
26h 06mSAT-ORD
6/15Sat
1 stopFrontier
23h 46mORD-SAT
$158
6/15Sat
1 stopAmerican Airlines
6h 48mSAT-MLI
6/19Wed
1 stopAmerican Airlines
7h 01mMLI-SAT
$262
6/19Wed
nonstopAmerican Airlines
2h 52mSAT-ORD
6/23Sun
nonstopAmerican Airlines
2h 44mORD-SAT
$273
6/29Sat
1 stopUnited Airlines
4h 38mSAT-ORD
7/2Tue
nonstopUnited Airlines
2h 54mORD-SAT
$293
8/10Sat
1 stopUnited Airlines
7h 07mSAT-PIA
8/16Fri
1 stopUnited Airlines
5h 09mPIA-SAT
$312
6/18Tue
1 stopDelta
7h 28mSAT-MDW
6/25Tue
1 stopDelta
7h 11mMDW-SAT
$322
7/16Tue
1 stopDelta
5h 48mSAT-BMI
7/30Tue
1 stopDelta
5h 34mBMI-SAT
$323

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Recent one-way flight deals

6/11Tue
2 stopsSpirit Airlines
34h 46mSAT-ORD
$58
8/26Mon
1 stopSpirit Airlines
27h 43mSAT-ORD
$71
6/15Sat
1 stopFrontier
6h 04mSAT-ORD
$78
6/15Sat
1 stopFrontier
6h 28mSAT-MDW
$78
7/3Wed
nonstopAmerican Airlines
2h 52mSAT-ORD
$152
6/27Thu
nonstopUnited Airlines
2h 55mSAT-ORD
$157
7/5Fri
1 stopDelta
7h 20mSAT-ORD
$161
7/31Wed
nonstopAmerican Airlines
2h 55mSAT-ORD
$167
7/5Fri
1 stopDelta
6h 43mSAT-MDW
$244
6/10Mon
nonstopUnited Airlines
2h 55mSAT-ORD
$337

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Last minute flights from San Antonio to Illinois

Last minute flight, train and bus deals

6/1Sat
multi-stopFrontier
10h 12mSAT-ORD
6/8Sat
multi-stopFrontier
23h 46mORD-SAT
$250
6/1Sat
multi-stopFrontier
11h 02mSAT-MDW
6/8Sat
multi-stopFrontier
23h 31mMDW-SAT
$250
6/1Sat
multi-stopSpirit Airlines
10h 40mSAT-ORD
6/5Wed
multi-stopSpirit Airlines
19h 25mORD-SAT
$256
6/1Sat
multi-stopSpirit Airlines
10h 40mSAT-ORD
6/3Mon
multi-stopSpirit Airlines
32h 51mORD-SAT
$261
5/29Wed
multi-stopUnited Airlines
6h 58mSAT-PIA
6/4Tue
multi-stopUnited Airlines
7h 17mPIA-SAT
$448
5/29Wed
multi-stopUnited Airlines
12h 22mSAT-PIA
6/4Tue
multi-stopUnited Airlines
7h 17mPIA-SAT
$453
6/2Sun
nonstopAmerican Airlines
2h 47mSAT-ORD
6/9Sun
nonstopAmerican Airlines
2h 44mORD-SAT
$573
6/1Sat
multi-stopAmerican Airlines
6h 08mSAT-CMI
6/8Sat
multi-stopAmerican Airlines
5h 54mCMI-SAT
$607
6/1Sat
multi-stopDelta
7h 51mSAT-MDW
6/3Mon
multi-stopDelta
5h 12mMDW-SAT
$699
5/30Thu
multi-stopDelta
7h 51mSAT-MDW
6/1Sat
multi-stopDelta
7h 26mMDW-SAT
$721

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San Antonio - Illinois Flights

Departure:

San Antonio (SAT)United States

Return flight deals:

Illinois - San Antonio

Cabin classes:

$715
$861
$666
$295