What are the cheapest airlines flying from Dallas to St. Louis round-trip?

Flying on Frontier is currently your cheapest option to St. Louis, with prices starting at $87. Additional round-trip tickets that might be worth considering are offered by American Airlines and Southwest, with the lowest prices starting at $197 and $218, respectively. Frontier is priced at 74% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Dallas to St. Louis one-way?

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $44. However, be on the lookout for offers from American Airlines and Southwest, as they are both options that can get you from Dallas to St. Louis for a low price.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What are the cheapest flights from Dallas to St. Louis?

The cheapest flight price from Dallas to St. Louis is $80. On average you can expect to pay $453. The most popular route, (Dallas/Fort Worth - Lambert-St Louis), can usually be booked for $224.

What are the most reliable airlines from Dallas to St. Louis?

The top 3 most reliable airlines when flying from Dallas to St. Louis are Envoy Air (90%), GOL (89%) and Frontier (85%).

What are the most popular airlines that fly from Dallas to St. Louis?

The most popular airlines flying from Dallas to St. Louis are Southwest, American Airlines and Frontier. Something to consider prior to booking your flight.

What airport do you fly into for flights to St. Louis from Dallas?

Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Dallas. On average, Lambert-St Louis has 10 inbound flights from Dallas per day from 4 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

Can I find deals for flights from Dallas to St. Louis that include hotel bookings?

Yes. In addition to deals on Dallas to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dallas to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dallas to St. Louis.

Can I find deals for business class flights from Dallas to St. Louis?

Yes. Cheapflights offers flight deals from Dallas to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Cheapflights Tip: The best prices from Dallas to Lambert-St Louis are usually found in January or June, booked 84 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Find flight deals from Dallas to St. Louis

Popular in	February
Cheapest in	January
Average price	$275

Highest demand for flights based on searches. 22% potential increase in price ($98 potential increase over avg. RT price).

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Cheapest flight prices on average. 10% potential price decrease ($32 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Best time to book a flight from Dallas to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Dallas with our price prediction graph.

A78-STL

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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Everything you need to know about your flight from Dallas to St. Louis

How far ahead should I book a flight from Dallas to St. Louis?

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dallas to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Dallas to St. Louis?

Currently, May is the cheapest month in which you can book a flight from Dallas to St. Louis (average of $276). Flying from Dallas to St. Louis in February is currently the most expensive (average of $624). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DFW to STL?

A simple way to save on the total cost of your ticket is to fly from Dallas to St. Louis in the morning. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Dallas to St. Louis?

Travelers seeking maximum savings on their Dallas to St. Louis flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Dallas to St. Louis flights

Cheapflights partnered with top experts to bring you the best recommendations for your Dallas to St. Louis trip

Our travel experts

Chris Dong

Expert on DFW

Chris is a consumer travel reporter covering aviation, trending travel news, hotels, and loyalty programs—all for leading global publications like Travel + Leisure, The Washington Post, AFAR, and more. In addition to writing, Chris is a video host for Travel + Leisure, giving consumers an inside look at the latest in air travel.

Taryn White

Expert on STL

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Paul Rubio

Expert on DAL

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Get a feel of what it's like to fly with Southwest,JetBlue, andAmerican Airlines from Dallas to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,216 reviews

Reviews

1 / 20

10.0

Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.

Southwest

7.9

Good

4,216 reviews

Southwest

7.9

Good

4,216 reviews

Reviews

1 / 20

10.0

Excellent

Courtney,Sep 2026

DEN - STL

JetBlue

7.1

Good

3,045 reviews

Southwest

7.9

Good

4,216 reviews

Reviews

1 / 20

10.0

Excellent

Courtney,Sep 2026

DEN - STL

American Airlines

7.0

Good

12,132 reviews

Southwest

7.9

Good

4,216 reviews

Reviews

1 / 20

10.0

Excellent

Courtney,Sep 2026

DEN - STL

Frontier

5.6

Fair

2,559 reviews

Southwest

7.9

Good

4,216 reviews

Reviews

1 / 20

10.0

Excellent

Courtney,Sep 2026

DEN - STL

Related info for your journey

What airport do you fly into for flights to St. Louis from Dallas?
Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Dallas. On average, Lambert-St Louis has 10 inbound flights from Dallas per day from 4 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.
What are the cheapest airlines flying from Dallas to St. Louis round-trip?
Flying on Frontier is currently your cheapest option to St. Louis, with prices starting at $87. Additional round-trip tickets that might be worth considering are offered by American Airlines and Southwest, with the lowest prices starting at $197 and $218, respectively. Frontier is priced at 74% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Dallas to St. Louis one-way?
The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $44. However, be on the lookout for offers from American Airlines and Southwest, as they are both options that can get you from Dallas to St. Louis for a low price.
What are the most reliable airlines from Dallas to St. Louis?
The top 3 most reliable airlines when flying from Dallas to St. Louis are Envoy Air (90%), GOL (89%) and Frontier (85%).
What are the cheapest flights from Dallas to St. Louis?
The cheapest flight price from Dallas to St. Louis is $80. On average you can expect to pay $453. The most popular route, (Dallas/Fort Worth - Lambert-St Louis), can usually be booked for $224.
Can I find deals for flights from Dallas to St. Louis that include hotel bookings?
Yes. In addition to deals on Dallas to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dallas to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dallas to St. Louis.
Can I find deals for business class flights from Dallas to St. Louis?
Yes. Cheapflights offers flight deals from Dallas to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Dallas to St. Louis?
Currently, May is the cheapest month in which you can book a flight from Dallas to St. Louis (average of $276). Flying from Dallas to St. Louis in February is currently the most expensive (average of $624). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 4 airlines flying from Dallas to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$87	Average$171	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$197	Average$320	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$218	Average$387	FlexibilityNo cancel fee	On-time63%
JetBlue	Cheapest$243	Average$265	FlexibilityNo cancel fee	On-time62%

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Cheap flights from Dallas to St. Louis (STL)

Find cheap flights from Dallas to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Dallas to St. Louis

Popular in

Cheapest in

Average price

Best time to book a flight from Dallas to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Dallas with our price prediction graph.

Cheapflights Insights

How far ahead should I book a flight from Dallas to St. Louis?

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dallas to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Dallas to St. Louis?

What is the cheapest time of day to fly from DFW to STL?

A simple way to save on the total cost of your ticket is to fly from Dallas to St. Louis in the morning. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Dallas to St. Louis?

Travelers seeking maximum savings on their Dallas to St. Louis flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Dallas to St. Louis flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your Dallas to St. Louis trip

Our travel experts

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with Southwest,JetBlue, andAmerican Airlines from Dallas to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly into for flights to St. Louis from Dallas?

What are the cheapest airlines flying from Dallas to St. Louis round-trip?

What are the cheapest airlines to fly from Dallas to St. Louis one-way?

What are the most reliable airlines from Dallas to St. Louis?

What are the cheapest flights from Dallas to St. Louis?

Can I find deals for flights from Dallas to St. Louis that include hotel bookings?

How can I find direct flights from Dallas to St. Louis?

Can I find deals for business class flights from Dallas to St. Louis?

What is the cheapest month to book a flight from Dallas to St. Louis?

Traveling to a place near St. Louis?

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Dallas and St. Louis flights

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Top 4 airlines flying from Dallas to St. Louis

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