Flights from San Antonio International Airport to Illinois

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.

Chicago.R 3,445 per passenger.Departing Sat, 30 Aug, returning Sun, 31 Aug.Return flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from San Antonio International on Sat, 30 Aug, arriving in Chicago O'Hare International.Inbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Sun, 31 Aug, arriving in San Antonio International.Price includes taxes and charges.From R 3,445, select.

Peoria.R 5,306 per passenger.Departing Sat, 16 Aug, returning Wed, 20 Aug.Return flight with United.Outbound indirect flight with United, departs from San Antonio International on Sat, 16 Aug, arriving in Greater Peoria.Inbound indirect flight with United, departs from Greater Peoria on Wed, 20 Aug, arriving in San Antonio International.Price includes taxes and charges.From R 5,306, select.

Decatur.R 5,735 per passenger.Departing Thu, 14 Aug, returning Mon, 18 Aug.Return flight with United.Outbound indirect flight with United, departs from San Antonio International on Thu, 14 Aug, arriving in Decatur.Inbound indirect flight with United, departs from Decatur on Mon, 18 Aug, arriving in San Antonio International.Price includes taxes and charges.From R 5,735, select.

Moline.R 6,883 per passenger.Departing Tue, 5 Aug, returning Tue, 12 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from San Antonio International on Tue, 5 Aug, arriving in Moline.Inbound indirect flight with Delta, departs from Moline on Tue, 12 Aug, arriving in San Antonio International.Price includes taxes and charges.From R 6,883, select.

Bloomington.R 8,010 per passenger.Departing Wed, 13 Aug, returning Sun, 17 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from San Antonio International on Wed, 13 Aug, arriving in Central Illinois Regional.Inbound indirect flight with Delta, departs from Central Illinois Regional on Sun, 17 Aug, arriving in San Antonio International.Price includes taxes and charges.From R 8,010, select.

Flying from San Antonio International Airport to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	R 1,558, Chicago
Cheapest month to fly	August
Average flight time	2 hrs, 46 mins
Average flights per week	219
Most popular airline	American Airlines

How to find cheap flights from San Antonio International Airport to Illinois

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from San Antonio International Airport to Illinois. Other savvy travellers recently found return flights from R 3,445 and one-way tickets from R 1,558. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in August

The cheapest time to fly from San Antonio International Airport to Illinois is currently August.

Fly on a Saturday

From our data, we can see that Saturday seems to be the cheapest time to fly from San Antonio International Airport to Illinois.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from San Antonio International Airport to anywhere you choose in Illinois.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from San Antonio International Airport to your chosen airport in Illinois go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the San Antonio International Airport to Illinois flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

Are there any direct flights from San Antonio International Airport to Illinois?

Yes - direct flights currently operate from San Antonio International Airport to Chicago O'Hare International Airport in Illinois.

What is the average price of a flight from San Antonio International Airport to 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 R 3,445 is the best price. This is good, compared to the average Illinois ticket price of R 5,876.

What is the cheapest month to fly from San Antonio International Airport to Illinois?

The cheapest month to fly from San Antonio International Airport to Greater Peoria Airport is currently August.
The cheapest month to fly from San Antonio International Airport to Decatur Airport is currently August.
The cheapest month to fly from San Antonio International Airport to Central Illinois Regional Airport is currently August.
And the cheapest month to fly from San Antonio International Airport to Moline Airport is usually August.

Which upcoming date is cheapest to fly from San Antonio International Airport to Illinois on?

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, 30 August 2025.

If I'm flying from San Antonio International Airport, where in Illinois is cheapest to fly into?

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 O'Hare International.

How long is the flight from San Antonio International Airport to Illinois?

The average flight time between San Antonio International Airport and Illinois is 2 hours and 45 minutes.