Ducoffs.comAirlines Flying this Route
Ducoffs.com compares full-service and low-cost airlines flying between St. Louis and Dallas in a single search, including nonstop and one-stop options, so you can weigh price against total travel time.
STL → DFW
Find and Compare the Cheapest Ways to Fly from St. Louis to Dallas
Compare one-way, round-trip and flight + hotel packages from St. Louis to Dallas, a nonstop flight of about 1h 35m, with fares from around 125.
St. Louis to Dallas flight facts
St. Louis to Dallas is a domestic route covering about 550 miles, arriving at Dallas/Fort Worth International Airport (DFW) in United States. Peak travel season in Dallas runs March–May & October–November (warm and sunny), while June–August is usually the quietest and best-value time to visit.
| Departing from | St. Louis Lambert International Airport (STL) |
|---|---|
| Arriving at | Dallas/Fort Worth International Airport (DFW) |
| Distance | 550 miles (885 km) |
| Nonstop flight time | About 1h 35m |
| Round-trip fares from | $125 (estimate) |
| Cheapest months | September, October, February |
| Peak season in Dallas | March–May & October–November |
| Cheapest hotel months in Dallas | June–August |
| Best time to book | 1 to 3 months ahead |
| Route info updated | October 16, 2026 |
When to visit Dallas
Peak season
March–May & October–November
Warm and sunny
Shoulder season
February & September
Mild, heat easing
Off-peak season
June–August
Hot and humid
Estimated round-trip fares by month, St. Louis to Dallas
| Month | Fares from |
|---|---|
| January | $140 |
| February | $135 |
| March | $150 |
| April | $140 |
| May | $135 |
| June | $185 |
| July | $175 |
| August | $175 |
| September | $125 |
| October | $130 |
| November | $160 |
| December | $190 |
Flying from St. Louis to Dallas
Best Time to Book Flights from St. Louis to Dallas
Fares on this route tend to be lowest in September, October, and February. For the best selection, book about 1 to 3 months before departure and stay flexible by a day or two.
Average Travel Duration
St. Louis and Dallas are about 550 miles apart. A nonstop flight takes roughly 1h 35m; connecting itineraries usually add 2 to 5 hours.
St. Louis to Dallas flight questions
How can I find the absolute cheapest flight from St. Louis to Dallas?
The best way to secure budget rates is by comparing multiple airlines simultaneously and checking flexible dates. Ducoffs.com scans available partner networks to bring you real-time pricing options.
What is the cheapest month to fly from St. Louis to Dallas?
Based on typical seasonal demand, September, October, and February tend to offer the lowest fares on this route, with estimated round-trip prices starting around $125. Live prices change daily, so run a search for your exact dates.
How long is the flight from St. Louis to Dallas?
St. Louis and Dallas are about 550 miles apart. A nonstop flight takes roughly 1h 35m, while connecting itineraries usually add 2 to 5 hours depending on the layover.
When are hotels cheapest in Dallas?
Hotel rates in Dallas are usually lowest in June–August, when demand is quieter, and highest during peak season (March–May & October–November). Booking your flight and hotel together can save up to 30%.
Which airport do I fly into for Dallas?
This route arrives at Dallas/Fort Worth International Airport (DFW). Your search results also show nearby airports when they offer a cheaper or faster option.
How far in advance should I book a flight to Dallas?
For this route, booking about 1 to 3 months before departure usually gives the best balance of price and seat selection. Mid-week departures are often cheaper than weekend flights.
Is it cheaper to bundle flights and hotels together?
Yes. Bundling your travel components can save you up to 30% compared to booking flights and hotels separately, as airlines and properties offer exclusive package discounts.
Travel guides for this trip
- PlanningThe Cheapest Months to Fly from Miami, New York, Los Angeles, Chicago, Tampa, Dallas, and AtlantaWhen airfare is lowest from Miami, New York, Los Angeles, Chicago, Tampa, Dallas, and Atlanta, plus the routes that see the biggest seasonal price swings.
- DealsHow to Find Hidden Hotel Deals with Ducoffs TravelTwelve proven ways to pay less for great hotels: smarter dates, bundles, neighborhood swaps, call-in rates, and how to use Ducoffs.com tools to find them.
- PlanningHow to Stretch Your Vacation Days into Longer TripsTurn a few vacation days into long trips by pairing them with public holidays and weekends, and avoid the peak prices that come with holiday travel.