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 $62. Additional round-trip tickets that might be worth considering are offered by American Airlines and Southwest, with the lowest prices starting at $177 and $182, respectively. Frontier is priced at 78% 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 $27. However, be on the lookout for offers from Southwest and Delta, as they are both options that can get you from Dallas to St. Louis for a low price.

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

Booking 75 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, August is the cheapest month in which you can book a flight from Dallas to St. Louis (average of $311). Flying from Dallas to St. Louis in March is currently the most expensive (average of $356). 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 day to fly from Dallas to St. Louis?

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

Weekly flight availability from Dallas to St. Louis

The most flights from A78 to STL are scheduled on a Thursday (36 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (20 on average).

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 $62. On average you can expect to pay $201. The most popular route, (Dallas/Fort Worth - Lambert-St Louis), can usually be booked for $117.

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 Frontier (90%), GOL (82%) and SkyWest Airlines (77%).

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

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

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

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to St. Louis. Check prices with Cheapflights to find a great deal for your trip.

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

Find a great deal and save up to 84% by booking at least 60 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Dallas to St. Louis within the next two weeks, with the cheapest ticket starting at $258.

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

Our data shows that July tends to be the cheapest month to fly to St. Louis from Dallas. Users have commonly found prices around $285 for the month, but tickets can be as low as $104. Due to multiple factors, prepare for potentially higher prices in March.

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 afternoon. If you’re flexible enough to do this you can expect to save up to 40% on your trip compared to booking a flight at noon.

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 25 inbound flights from Dallas per day from 3 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.

$27+ Cheap Flights from Dallas to St. Louis

Round-trip from	$113 (Cheapflightsfares)
One-way from	$27 (Cheapflightsfares)
Popular in	March
Cheapest in	July
Average price	$250

DFW

DFW's Terminal A offers gourmet burgers, Asian fusion, and a mini spa, perfect for a quick bite or relaxation before your flight.

DAL

DAL offers a streamlined experience with quick security lines and a straightforward layout, making it ideal for domestic travelers.

STL

MetroLink offers a convenient and economical way to reach downtown St. Louis from STL, ideal for travelers with minimal luggage.

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$62	Average$175	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$177	Average$465	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$182	Average$311	FlexibilityNo cancel fee	On-time63%

$27+ Cheap flights from Dallas to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dallas to St. Louis with Cheapflights

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Cheapflights Tip: The best prices from Dallas to Lambert-St Louis are usually found in July or September, booked 75 days in advance, depart on a Thursday or Monday and return on a Friday

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Cheapest flights from Dallas to St. LouisExplore the most affordable flight options available from Dallas to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Explore the most affordable flight options available from Dallas to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

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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.

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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?

Use this chart to determine the optimal time to book a round-trip flight from Dallas to St. Louis. Price data was last updated on August 8, 2025.

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?

Find hourly flight availability from Dallas to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Dallas to St. Louis. Price data was last updated on December 16, 2024.

Weekly flight availability from Dallas to St. Louis

Explore weekly flight availability from Dallas to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 14, 2025.

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with Southwest, American Airlines, and Frontier 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

Find useful and relevant information for your journey from Dallas to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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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Cheapest flights from Dallas to St. Louis
Explore the most affordable flight options available from Dallas to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.