$74 Cheap Flights from Dallas (DFW) to St. Louis (STL)

View $74 flight on Sun, Jun 15, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Dallas to St. Louis (DFW-STL)

Prices were available within the past 7 days and start at $74 for one-way flights and $143 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Thu, Jun 12 - Mon, Jun 16
DAL
Dallas
STL
St. Louis
$143 Roundtrip, found 3 hours ago
$143
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Thu, Jun 12 from Dallas to St. Louis, returning Mon, Jun 16, priced at $143 found 3 hours ago
Frontier Airlines
Thu, Jul 10 - Sun, Jul 13
DFW
Dallas
STL
St. Louis
$148 Roundtrip, found 1 hour ago
$148
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Jul 10 from Dallas to St. Louis, returning Sun, Jul 13, priced at $148 found 1 hour ago
Frontier Airlines
Tue, May 20 - Sun, Jun 22
DFW
Dallas
STL
St. Louis
$169 Roundtrip, found 1 day ago
$169
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, May 20 from Dallas to St. Louis, returning Sun, Jun 22, priced at $169 found 1 day ago
Frontier Airlines
Thu, Jun 5 - Thu, Jun 12
DFW
Dallas
STL
St. Louis
$179 Roundtrip, found 11 hours ago
$179
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Thu, Jun 5 from Dallas to St. Louis, returning Thu, Jun 12, priced at $179 found 11 hours ago
Southwest Airlines
Tue, May 20 - Wed, May 21
DAL
Dallas
STL
St. Louis
$180 Roundtrip, found 2 days ago
$180
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Tue, May 20 from Dallas to St. Louis, returning Wed, May 21, priced at $180 found 2 days ago
Frontier Airlines
Sat, May 10 - Wed, May 14
DFW
Dallas
STL
St. Louis
$188 Roundtrip, found 7 hours ago
$188
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Sat, May 10 from Dallas to St. Louis, returning Wed, May 14, priced at $188 found 7 hours ago
Frontier Airlines
Wed, Jun 11 - Sun, Jun 15
DFW
Dallas
STL
St. Louis
$189 Roundtrip, found 18 hours ago
$189
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Wed, Jun 11 from Dallas to St. Louis, returning Sun, Jun 15, priced at $189 found 18 hours ago
American Airlines
Thu, Aug 14 - Sun, Aug 17
DFW
Dallas
STL
St. Louis
$195 Roundtrip, found 6 hours ago
$195
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Aug 14 from Dallas to St. Louis, returning Sun, Aug 17, priced at $195 found 6 hours ago
Delta
Thu, Jul 3 - Sun, Jul 6
DFW
Dallas
STL
St. Louis
$212 Roundtrip, found 4 hours ago
$212
Roundtrip
found 4 hours ago
Select Delta flight, departing Thu, Jul 3 from Dallas to St. Louis, returning Sun, Jul 6, priced at $212 found 4 hours ago
Spirit Airlines
Sat, Oct 18 - Sun, Oct 19
DFW
Dallas
STL
St. Louis
$261 Roundtrip, found 5 hours ago
$261
Roundtrip
found 5 hours ago
Select Spirit Airlines flight, departing Sat, Oct 18 from Dallas to St. Louis, returning Sun, Oct 19, priced at $261 found 5 hours ago
Flights from Dallas (DFW) to St. Louis (STL)
Origin airport
Dallas-Fort Worth Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, Spirit Airlines, United
Roundtrip price
$142
Distance
550 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 June. 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 $74 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

How long does it take to fly from Dallas Airport to STL?
With American Airlines, a direct flight takes roughly 1 hour and 44 minutes. Hop on the 5:44PM flight from Dallas-Fort Worth Intl. Airport (DFW) and come in to land at Lambert-St. Louis Intl. Airport (STL) at 7:28PM. Snag an epic deal on this route when you use Expedia to book your trip.
Is it cheaper to buy a plane ticket from DFW Airport to Lambert Field last minute?
Being the spontaneous type is a fabulous way to travel around, but it isn’t necessarily the smartest method to score a bargain airfare. It’s better to book your Dallas Airport to Lambert Field journey well ahead of time instead of leaving it until the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. Leave all that spontaneity for when you’re exploring Lambert Field!
What airline has the least delays from Dallas-Fort Worth Intl. Airport (DFW) to STL?
Recording an on-time arrival score of 80%, American Airlines is the airline that’s more likely to fly you from Dallas-Fort Worth Intl. Airport (DFW) to Lambert-St. Louis Intl. Airport (STL) on schedule. Flight delays aren’t just an unpleasant experience — they can also lead to a missed connection that upends your entire journey. You can prepare for delays by checking your flight status through the Expedia App long before you get to the airport. If you’re already at the terminal and the delay will significantly impact your plans, head to the customer service desk to see what your options are.
What airports do you fly into for St. Louis from Dallas?
From Dallas, you can reach St. Louis via Lambert-St. Louis Intl. Airport (STL), Spirit of St. Louis Airport (SUS) and St. Louis Downtown Airport (CPS). It’s a good idea to check which hub is the best option for you before making your decision. If you decide on Lambert-St. Louis Intl. Airport (STL), it’s about 12 mi northwest of the downtown area. Use the cash you save when booking your journey with Expedia to enjoy the city’s awesome sights, such as Busch Stadium and Gateway Arch.
What are the most popular departure times for flights from Dallas-Fort Worth Intl. Airport (DFW) to Lambert Field?
The most popular departure times for flights from DFW to Lambert-St. Louis Intl. Airport (STL) are between 9:00 PM - 10:00 PM on American Airlines. It’s a good idea to depart in the morning. The earlier you take off, the better your odds of a delay-free flight with less air traffic in the skies.
Can I change the date of my flight from Dallas-Fort Worth Intl. Airport (DFW) to Lambert-St. Louis Intl. Airport (STL)?
It’s a snap to make changes to your Dallas Airport to Lambert Field journey yourself. Just log in to the Expedia Trips portal and tap “change flight.” Look for new flights and lock in the one that works best. You’ll get an estimate of flight change fees that may apply. You can also find your way to our Customer Service portal to connect with our Virtual Agent and quickly get answers to all your questions.

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*Available to One Key members.