Cheap Flights from St. Louis (XLS) to Chicago (ORD)

Popular airlines from St. Louis (XLS) to Chicago O'Hare Intl. Airport (ORD)

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Frequently asked questions

How much does a flight from St. Louis (XLS) to O'Hare Intl. Airport (ORD) cost?
Secure a cheap one-way flight or cheap return flight from St. Louis (XLS) to O'Hare Intl. Airport (ORD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from St. Louis (XLS) to O'Hare Intl. Airport (ORD)?
is the cheapest month to fly from XLS to ORD. Traveling outside of peak seasons is often the key to landing a great deal.
What is the cheapest airline that flies from St. Louis (XLS) to O'Hare Intl. Airport (ORD)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest XLS to ORD flight.
How many flights per day from St. Louis (XLS) to O'Hare Intl. Airport (ORD)?
There aren't any daily nonstop flights available from St. Louis (XLS) to O'Hare Intl. Airport (ORD). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from XLS to ORD?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from St. Louis (XLS) to O'Hare Intl. Airport (ORD)?
Opt for a flight from St. Louis (XLS) to O'Hare Intl. Airport (ORD) that leaves before 3 PM to reduce the risk of cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from St. Louis (XLS) to O'Hare Intl. Airport (ORD) last-minute?
Last-minute bookings from XLS to ORD are typically more expensive. To lock in the best prices, start looking for flights well in advance. That said, if you can play around with your travel dates, you may score a cheap fare just before your departure.
Is it cheaper to book a XLS to ORD flight and hotel package?
Compared with arranging flights and hotels separately, booking a XLS to ORD flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the stress out of planning your trip. Just pick your flights and choose from our extensive range of hotels, then tailor your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from St. Louis (XLS) to O'Hare Intl. Airport (ORD)?
Typically, you can reschedule or cancel your XLS to ORD flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you want more information, visit our Customer Service portal.

Travel information

Origin airport
St. Louis
Destination airport
O'Hare Intl.
Distance
4536 mi

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St. Louis to Chicago Flights

The cheapest times to fly from St. Louis to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Chicago are during the month of . You can find some of the cheapest flights from St. Louis to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Chicago

Sunday is one of the best days to book for cheap flights from St. Louis to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Chicago in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Chicago Flights

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*Available to One Key members.