Cheap flights from San Antonio International to Chicago O'Hare International

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Compare San Antonio International to Chicago O'Hare International flight deals

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Flight deals from San Antonio International to Chicago O'Hare International

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

Find the cheapest month to fly from San Antonio International to Chicago O'Hare International

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 O'Hare International flights are currently cheapest in April.

Direct flights from San Antonio International to Chicago O'Hare International

San Antonio International to Chicago O'Hare International: Alternative routes

Compare routes from San Antonio International to Chicago below. You may find an airport to fly into that's cheaper, faster, or easier than Chicago O'Hare International.

San Antonio to Chicago: Flight information

The things to know before you go.
Cheapest flight foundC$235
Cheapest month to flyApril
Average flight time2 hrs, 51 mins
Most popular airlineAlaska Airlines
Average flights per week288

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

The best price we found for a round-trip flight from San Antonio International to Chicago O'Hare International is C$233. 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 51 minutes is the average flight time from San Antonio International to Chicago O'Hare International.
Alaska Airlines, American Airlines and Qatar Airways fly direct from San Antonio International to Chicago O'Hare International.
There are 288 flights per week flying from San Antonio International to Chicago O'Hare International, as of March 2025.
The cheapest month to fly from San Antonio International to Chicago O'Hare International is usually March 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to Chicago O'Hare International Airport on Monday, April 7, 2025.
Yes – the average flight time is 2 hours and 51 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 O'Hare International 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.
Currently, Frontier Airlines and United offer the cheapest flight tickets to Chicago O'Hare International.

Flying from San Antonio International Airport (SAT) to O'Hare International Airport (ORD): what you need to know

  • A direct flight from San Antonio International Airport to O'Hare International Airport takes 2 hours 51 minutes, on average. Chicago's timezone is UTC-5 — the same as San Antonio.

  • Each week, there are 45 flights from San Antonio International Airport to O'Hare International Airport. If you want to get going as soon as possible, go for the 05:50 American Airlines flight. If you're keen to make the most of your time before flying, the latest flight from SAT to ORD is 21:02 with American Airlines.

  • Planning to travel during a peak time like school or public holidays? Expect longer lines at check-in and security. To play it safe, arrive up to four hours before international flights and two hours before domestic departures.

  • We make it simple to book a flight with a stopover. To see all the options for flights from San Antonio International Airport to O'Hare International Airport, uncheck 'Direct flights only.' Then, pick a flight offering a stop long enough to tour your chosen city. Some popular stopovers between SAT and ORD include:

    • Dallas/Fort Worth International Airport

    • Will Rogers World Airport

    • Lambert-St. Louis International Airport

How to find the cheapest flights from San Antonio International Airport (SAT) to O'Hare International Airport (ORD)

  • The best price we've found for a one-way ticket from San Antonio International Airport to O'Hare International Airport is C$109. The cheapest price for a return flight is C$235. Remember that fares may change due to availability at the time of booking.

  • Book 9 months before your departure date. After looking at the numbers on our calendar, this is how far you should book ahead to find cheap flight tickets from SAT to ORD.

  • May is the cheapest month for flight tickets from San Antonio International Airport to O'Hare International Airport. If you want to travel during a different time of year, the 'Whole month' tool will show you the lowest prices across every month.

  • Finding a cheap ticket from SAT to ORD is straightforward with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch as soon as the price has fallen.

  • Use filters to tailor your flights from San Antonio International Airport to O'Hare International Airport. Select your preferred arrival and departure times, number of stops and airlines. Or sort your results by 'Cheapest' to find the best deals.

Handy information about San Antonio International Airport (SAT)

Arriving at O'Hare International Airport (ORD)

Getting from O'Hare International Airport (ORD) to central Chicago

  • O'Hare International Airport to the center of Chicago takes around 35 minutes in a car. It's approximately 40 kilometres away. Discover what options are available, such as car rentals, cabs or ride-sharing.

  • It takes around 54 minutes if you're traveling on public transport.

When to fly to O'Hare International Airport (ORD)

  • It's time to work out your trip dates for your flight from San Antonio International Airport to O'Hare International Airport. August is the busiest month to visit Chicago. If you want a more peaceful vibe, go in February.

  • When booking your flight from San Antonio International Airport to O'Hare International Airport, think about the kind of weather you enjoy. July is the warmest month in Chicago, with temperatures ranging from 15ºC to 29ºC.

  • January sees average temperatures of between -12ºC and 3ºC. Search for cheap flight tickets from SAT to ORD sometime then if you'd rather travel in cooler conditions.

More about Chicago

Complete your Chicago trip with hotels and a car rental

  • Comparing flights is not the only thing we're good at. After booking your cheap ticket to O'Hare International Airport, check out our car rental deals that'll give you the freedom and flexibility to see the sights at your own pace. Next, take a look at our exclusive rates for hotels to find the ideal Chicago stay.

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