Cheap Flights from San Antonio International to Chicago

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Flight deals from San Antonio International to Chicago

Looking for a cheap last-minute deal or the best return flight from San Antonio International to Chicago? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Antonio International to Chicago

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Antonio International to Chicago flights are currently cheapest in July.

Direct flights from San Antonio International to Chicago

Alternative San Antonio International to Chicago routes

Looking for the cheapest, fastest or easiest route from San Antonio International to Chicago? You could fly into the following airports instead.

San Antonio to Chicago: Flight information

The things to know before you go.
Cheapest flight found161 €
Cheapest month to flyJuly
Average flight time2 hrs, 46 mins
Most popular airlineAmerican Airlines
Average flights per week209

Finding cheap flights from San Antonio International to Chicago: Frequently asked questions

There are 4 airports in Chicago: Chicago Midway, Chicago O'Hare International, Chicago Dupage County, and Chicago Rockford.
The best price we found for a return flight from San Antonio International to Chicago is 161 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 45 minutes is the average flight time from San Antonio International to Chicago.
American Airlines, Alaska Airlines and Southwest Airlines fly direct from San Antonio International to Chicago.
As of June 2025, there are 209 flights per week flying from San Antonio International to Chicago.
The cheapest month to fly from San Antonio International to Chicago is usually June 2025.
If you're flying from San Antonio International Airport, the cheapest airport near Chicago is Chicago O'Hare International – which is 25.4 km away from the centre of Chicago. We've found flights into this airport from 161 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to Chicago on Tuesday, 8 July 2025.
Yes – the average flight time is 2 hours and 45 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chicago but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chicago is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 19°C. July is typically the warmest month in Chicago, when it usually averages around 26°C. You can expect the least rain in January. The coldest month is January, with temperatures averaging -8°C. The rainiest month is August.
Currently, Spirit Airlines and Southwest Airlines offer the cheapest flight tickets to Chicago.

Flying from San Antonio International Airport (SAT) to Chicago: what you need to know

  • Around 3 hours is how long you can expect to be travelling on a direct flight from San Antonio International Airport to Chicago.

  • Chicago and San Antonio (where San Antonio International Airport is located) share the UTC-5 timezone. This means you won't have to change your watch when you arrive.

  • With 35 weekly flights between the two airports, San Antonio International Airport (SAT) to O'Hare International Airport (ORD) is the busiest route. American Airlines operates the earliest flight at 05:54. If you'd like to make the most of your day before taking off, the last flight from SAT to ORD is with American Airlines at 18:34.

  • For stress-free travel, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This leaves you with plenty of time to catch your SAT to Chicago flight.

  • Delays at security and check-in are likely if you're jetting off during high season, so allow a little extra breathing room. A good rule of thumb for peak periods? Arrive up to four hours ahead for international flights and two hours for domestic departures.

  • Start your journey at SAT and fly nonstop to O'Hare International Airport (ORD). That's where you can expect to land when searching for San Antonio International Airport to Chicago tickets.

  • Choose from a variety of carriers operating direct flights from San Antonio International Airport to Chicago. Book your seat with one of these:

  • SAT is around 13 kilometres from central San Antonio. If you're catching a cab, ride-sharing or driving from the centre, it'll take you 20 minutes or so to get there, depending on the traffic. If you're using public transport, expect the trip time to be around 1 hour 30 minutes.

  • Looking for a hotel near SAT? If you're catching an early flight from San Antonio International Airport to Chicago, these stays will put you moments from check-in:

  • San Antonio International Airport maintains a solid on-time record, reducing the likelihood of delays. Departures from SAT arrive at their destination as scheduled 83.17% of the time.

  • SAT is located at 9800 Airport Boulevard.

How to find the cheapest flights from San Antonio International Airport (SAT) to Chicago

  • 63 € is the lowest price we've found for a one-way San Antonio International Airport to Chicago flight. A round-trip plane ticket right now is 161 €. Depending on when you want to go and the availability, these fares can change.

  • Lock in cheap flights from SAT to Chicago by booking one month ahead. According to our research, that's the best time for picking up a bargain.

  • May is the best month for nabbing a fantastic deal on San Antonio International Airport to Chicago tickets. If you want to travel at a different time of year, the 'Whole month' tool will give you the lowest prices for each month.

  • There's no need to keep checking in to see if fares have dropped when you set up a Price Alert. We'll update you when there's an even bigger deal on cheap flights from SAT to Chicago.

  • Tailor your trip with filters. Select your ideal departure and arrival times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' flights from San Antonio International Airport to Chicago.

Airports in Chicago

O'Hare International Airport (ORD)

  • O'Hare International Airport (ORD) is around 40 kilometres from central Chicago. If you're catching a cab or a ride-share, the drive will take roughly 35 minutes.

  • When travelling on public transport, expect a journey time of around 55 minutes.

  • Consider staying in a hotel close to ORD if you have a late flight from San Antonio International Airport to Chicago. Choose one of these accommodation options and skip the long transfer:

  • Get on the fast track to adventure by picking up an O'Hare International Airport rental car. Grab your wheels from Routes Car Rentals, Dollar or Budget to explore Chicago and beyond.

  • Reserving your ride from O'Hare International Airport about four weeks in advance of your flight from SAT to Chicago can help you get the best possible rate.

  • The street address for ORD is 10000 West O'Hare.

Chicago Midway International Airport (MDW)

  • Chicago Midway International Airport (MDW) is about 19 kilometres from the centre of Chicago. After your flight from San Antonio International Airport to Chicago, it'll take you around 20 minutes to get to the heart of the city in a ride-share or cab.

  • If you travel by public transport, the journey will take you 45 minutes or so.

  • Hang up the 'Do not disturb' sign and rest at a hotel near MDW. Here are a few options where you can settle in after your SAT to Chicago flight:

  • Forget about public transport schedules or waiting forever for a cab. Grab a Chicago Midway International Airport rental car and let the journey unfold your way. Check out the rates and availability from Dollar, Hertz and Budget.

  • Avoid last-minute price surges. Reserving your ride four weeks ahead of your arrival at MDW will save you money.

  • The address for Chicago Midway International Airport is 5700 South Cicero.

Chicago Rockford International Airport (RFD)

  • Make your way to the city centre after your flight from San Antonio International Airport to Chicago has landed. Central Chicago is around 137 kilometres from Chicago Rockford International Airport (RFD) and takes roughly 1 hour 25 minutes to get to by car.

  • Public transport can get you there in roughly 4 hours 15 minutes.

  • Enjoy a more leisurely start to your trip by staying at a hotel near RFD after your SAT to Chicago flight. Unwind after a day of travel or just take a moment to get your footing in a new city at:

  • Whether you're looking for a mini for a solo getaway or a spacious SUV to transport your group, you'll find the ideal Chicago Rockford International Airport rental car for your needs. Browse the types of wheels available from providers such as Budget, Alamo and National.

  • Rental companies sometimes offer promotions for early bookings, so book your vehicle from RFD ahead of your flight from San Antonio International Airport to Chicago. Plan ahead and your wallet will thank you.

  • The address for Chicago Rockford International Airport is 2 Airport Cir.

Best time to go to Chicago

  • Carefully consider your trip dates before booking your flight from San Antonio International Airport to Chicago. The city comes alive during high season, but hotel prices are generally higher and top attractions can get busy. Go to Chicago in the off-season if you want a quieter vibe.

  • Before booking a San Antonio International Airport to Chicago plane ticket, think about what kind of weather you prefer. July is the warmest month in Chicago, with temperatures ranging from 15ºC (59ºF) to 29ºC (84ºF).

  • If you like travelling in cooler conditions, search for a cheap ticket from SAT to Chicago in January when temperatures average between -12ºC (10ºF) and 3ºC (37ºF).

More about Chicago

  • When it comes to searching for somewhere to rest your head, you'll find the top stays in Chicago right here. Check out these hotels after you've booked your flight from San Antonio International Airport to Chicago:

  • There are so many things to see and do in this city it can be tricky to know where to begin. Art Institute of Chicago, Millennium Park and LandShark Beer Garden at Navy Pier are popular attractions which should be on every Chicago itinerary.

Explore more of United States

  • Columbus is just one of the many places in United States waiting to be discovered once you've seen Chicago. Around 451 kilometres away to the south-east, top sights here include Franklin Park Conservatory and Botanical Gardens, Ohio Statehouse and German Village.

  • Around 257 kilometres south-east of Chicago, Indianapolis is another essential stop in United States. Experience major highlights starting with The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.