Flights from San Antonio International Airport to Illinois

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Flight deals from San Antonio International Airport to Illinois

Looking for cheap tickets from San Antonio International Airport to Illinois, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Flying from San Antonio International Airport to Illinois

Arm yourself with these facts on the fly.
Cheapest flight found$281, Chicago
Cheapest month to flyMay
Average flight time2 hrs, 45 mins
Average flights per week224
Most popular airlineAmerican Airlines

Frequently asked questions

Yes - direct flights currently operate from San Antonio International Airport to Chicago Midway Airport in Illinois.
We looked at all of the upcoming return flights from San Antonio International Airport to Illinois we could find over the next 12 months. It looks like $281 is the best price. This is good, compared to the average Illinois ticket price of $565.
The cheapest month to fly from San Antonio International Airport to Moline Airport is currently May.
The cheapest month to fly from San Antonio International Airport to Chicago Midway Airport is currently May.
The cheapest month to fly from San Antonio International Airport to Central Illinois Regional Airport is currently June.
And the cheapest month to fly from San Antonio International Airport to Greater Peoria Airport is usually May.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Antonio International Airport to Illinois on Saturday, 24 May 2025.
If you're flying from San Antonio International, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago Midway.
The average flight time between San Antonio International Airport and Illinois is 2 hours and 45 minutes.