Cheap Flights from Dallas (DFW) to St. Louis (SUS)

Popular airlines from Dallas-Fort Worth Intl. Airport (DFW) to St. Louis, MO (SUS-Spirit of St. Louis)

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Flights from Dallas (DFW) to St. Louis (SUS)
Origin airport
Dallas-Fort Worth Intl.
Destination airport
Spirit of St. Louis
Distance
535 mi

Dallas to St. Louis Flights

The cheapest times to fly from Dallas to St. Louis

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 Dallas to St. Louis are during the month of . You can find some of the cheapest flights from Dallas to St. Louis with Expedia's search tool and vast selection of airlines.

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

Sunday is one of the best days to book for cheap flights from Dallas to St. Louis: 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 Dallas to St. Louis

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 Dallas to St. Louis in 2025. 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 Dallas to St. Louis 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 Dallas to St. Louis 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.

Frequently asked questions

Is it cheaper to buy a plane ticket from Dallas Airport to SUS last minute?
Booking your flight from DFW Airport to St. Louis Airport at the last minute could help you save if you strike it lucky and find a bargain. However, airfares usually don’t come down in price as the departure date nears. If you hold out, flights could also be booked solid or the best seats taken (because who wants the middle seat?). If you don’t want to hedge your bets, book well ahead of your departure date. It’s worth noting that some of the best deals can be found up to a year in advance. If your favorite airline hasn’t released its airfares yet, check back regularly as deals are updated on Expedia all the time.
What airports do you fly into for St. Louis from Dallas?
With Spirit of St. Louis Airport (SUS), Lambert-St. Louis Intl. Airport (STL) and St. Louis Downtown Airport (CPS) to pick from, flying from Dallas to St. Louis is simple. The city’s main terminal, Spirit of St. Louis Airport (SUS), is about 25 mi west of the downtown area. Along with the price of tickets, consider factors like train or bus options from the airport and the distance to your hotel when deciding where to fly into. Get your St. Louis vacation off to an exciting start by checking out Busch Stadium and Gateway Arch.
Can I change the date of my flight from Dallas Airport to SUS?
It’s so easy to make changes to your Dallas Airport to St. Louis Airport trip yourself. Access your itinerary via the Expedia Trips portal and select “change flight.” Search for new flights and lock in the one that works best with your plans. You’ll get an estimate of any flight change fees. Alternatively, use our Customer Service portal to chat to our Virtual Agent and quickly get answers to your questions.

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