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$69+ Cheap flights from St. Louis (STL) to Dallas

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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DFW
Aug 16 — Aug 231
Sat 8/16
Sat 8/23
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Dallas are usually found in September or August, booked 69 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from St. Louis to Dallas

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Dallas (A78). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 11, 2025.

Round-trip from

$128
(Frontier)

One-way from

$69
(Frontier)

Popular in

February

Cheapest in

September

Average price

$208
From Lambert-St Louis to Dallas
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One-way flight from Lambert-St Louis to Dallas
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Highest demand for flights based on searches. 15% potential increase in price ($51 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from St. Louis to Dallas

Cheapest flights from St. Louis to Dallas
Explore the most affordable flight options available from St. Louis to Dallas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2025.

This Frontier deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2110:17 amSTL - DFW
Nonstop1h 56mFrontier
Sun 8/247:25 amDFW - STL
Nonstop1h 53mFrontier
Deal found 8/10$128
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/78:49 amSTL - DFW
Nonstop1h 57mAmerican Airlines
Sat 10/114:45 pmDFW - STL
Nonstop1h 44mAmerican Airlines
Deal found 8/10$139
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:15 amSTL - DAL
Nonstop1h 40mSouthwest
Tue 10/76:00 amDAL - STL
Nonstop1h 40mSouthwest
Deal found 8/10$139
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/245:18 amSTL - DFW
Nonstop1h 56mAmerican Airlines
Wed 10/12:25 pmDFW - STL
Nonstop1h 45mAmerican Airlines
Deal found 8/10$140
This Mytrip deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/114:00 pmSTL - DFW
1 stop6h 08mFrontier
Thu 9/188:00 amDFW - STL
Nonstop1h 54mFrontier
Deal found 8/9$145
This Frontier deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2110:17 amSTL - DFW
Nonstop1h 56mFrontier
Mon 8/256:00 amDFW - STL
1 stop6h 56mFrontier
Deal found 8/9$147
This FlightHub deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/252:01 pmSTL - DFW
1 stop19h 36mFrontier
Thu 8/287:25 amDFW - STL
Nonstop1h 53mFrontier
Deal found 8/9$149
This Frontier deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:17 amSTL - DFW
Nonstop1h 57mFrontier
Mon 10/139:36 pmDFW - STL
1 stop11h 31mFrontier
Deal found 8/9$151
This Frontier deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/254:00 pmSTL - DFW
1 stop6h 08mFrontier
Sun 9/288:00 amDFW - STL
Nonstop1h 54mFrontier
Deal found 8/9$152
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/63:59 pmSTL - DFW
Nonstop1h 56mAmerican Airlines
Sat 9/134:35 pmDFW - STL
Nonstop1h 47mAmerican Airlines
Deal found 8/10$154
This Southwest deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/61:00 pmSTL - DAL
Nonstop1h 40mSouthwest
Sat 9/138:00 amDAL - STL
Nonstop1h 45mSouthwest
Deal found 8/9$154
This Frontier deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2510:49 amSTL - DFW
Nonstop1h 50mFrontier
Mon 9/295:40 amDFW - STL
1 stop9h 24mFrontier
Deal found 8/11$155

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Dallas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 11, 2025.
Use the filters below to find and compare flights from St. Louis to Dallas that are best for you.

Fly from

St. Louis

Fly to

Dallas

Route

Depart

Return

Price

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

Thu 8/21

10:17 am-12:13 pm

Nonstop1h 56m

Dallas/Fort Worth

Sun 8/24

7:25 am-9:18 am

Nonstop1h 53m

$128

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

Tue 10/7

8:49 am-10:46 am

Nonstop1h 57m

Dallas/Fort Worth

Sat 10/11

4:45 pm-6:29 pm

Nonstop1h 44m

$139

St. LouisDallas

STL - DAL

STLDAL

Lambert-St Louis

Wed 10/1

8:15 am-9:55 am

Nonstop1h 40m

Dallas Love Field

Tue 10/7

6:00 am-7:40 am

Nonstop1h 40m

$139

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

Wed 9/24

5:18 am-7:14 am

Nonstop1h 56m

Dallas/Fort Worth

Wed 10/1

2:25 pm-4:10 pm

Nonstop1h 45m

$140

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

Thu 9/11

4:00 pm-10:08 pm

1 stop6h 08m

Dallas/Fort Worth

Thu 9/18

8:00 am-9:54 am

Nonstop1h 54m

$145

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

Thu 8/21

10:17 am-12:13 pm

Nonstop1h 56m

Dallas/Fort Worth

Mon 8/25

6:00 am-12:56 pm

1 stop6h 56m

$147

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

Mon 8/25

2:01 pm-9:37 am

1 stop19h 36m

Dallas/Fort Worth

Thu 8/28

7:25 am-9:18 am

Nonstop1h 53m

$149

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

Thu 10/9

10:17 am-12:14 pm

Nonstop1h 57m

Dallas/Fort Worth

Mon 10/13

9:36 pm-9:07 am

1 stop11h 31m

$151

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

Thu 9/25

4:00 pm-10:08 pm

1 stop6h 08m

Dallas/Fort Worth

Sun 9/28

8:00 am-9:54 am

Nonstop1h 54m

$152

St. LouisDallas

STL - DAL

STLDAL

Lambert-St Louis

Sat 9/6

1:00 pm-2:40 pm

Nonstop1h 40m

Dallas Love Field

Sat 9/13

8:00 am-9:45 am

Nonstop1h 45m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/10

Showing 1-10 of 41 results
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The best insider tips for St. Louis to Dallas flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Dallas trip
Airlines
Southwest

Enjoy free snacks and non-alcoholic beverages, plus a free drink on special occasions.


Southwest offers two free checked bags, including oversized items like skis or golf clubs.

Read more about Southwestby Marisa Garcia
Frontier

Frontier's slimline seats are 17.7” wide, suitable for flights around 3 hours.


Consider early check-in to secure your place, as Frontier often overbooks flights.

Read more about Frontierby Marisa Garcia
Airports
STL

Security lines at STL are straightforward, averaging 5-10 minutes off-peak. Check real-time wait times online before heading to the airport.

Read more about STLby Taryn White
DFW

DFW offers a DART Orange Line connecting downtown Dallas to Terminal A, providing a convenient public transport option.

Read more about DFWby Chris Dong
DAL

DAL's proximity to downtown makes it a convenient choice, just a 20-minute drive from the city center.

Read more about DALby Paul Rubio
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Southwest and Frontier

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Chris Dong

Chris Dong

Expert on DFW

Chris Dong

Chris Dong

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.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White

Taryn White

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.

Read more
Paul Rubio

Paul Rubio

Expert on DAL

Paul Rubio

Paul Rubio

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.

Read more

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

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

Cheapflights Insights

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

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

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

The price you pay for your flight from St. Louis to Dallas may vary depending on when you book. For the best chance of a lower fare, look to book 69 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from St. Louis to Dallas (average of $216). Flying from St. Louis to Dallas in March is currently the most expensive (average of $295). 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 STL to DFW?

Find hourly flight availability from St. Louis to Dallas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 11, 2025.

When flying from St. Louis to Dallas, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 49% versus a flight at noon.

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

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

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

Weekly flight availability from St. Louis to Dallas

Explore weekly flight availability from St. Louis to Dallas. 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 11, 2025.

The most flights from STL to A78 are scheduled on a Sunday (33 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (22 on average).

How much does it cost to fly round-trip from St. Louis to Dallas?

Reviews of airlines servicing Dallas

Get insights into the airlines that provide service to Dallas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dallas. Reviews last updated August 11, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from St. Louis to Dallas to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,978 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,922 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Spirit Airlines
6.3
Okay
8,043 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Dallas. 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 from for flights from St. Louis to Dallas?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Dallas. 4 airlines have flights from Lambert-St Louis to Dallas on a regular basis. Booking flights from Lambert-St Louis to Dallas should not be difficult; the airport handles an average of 26 outbound flights to Dallas per day.

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

    Flying on Frontier is currently your cheapest option to Dallas, with prices starting at $128. Additional round-trip tickets that might be worth considering are offered by American Airlines and Southwest, with the lowest prices starting at $139 and $139, respectively. You may be able to fly from St. Louis to Dallas for 54% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from St. Louis to Dallas are Frontier ($69), American Airlines ($70), and Southwest ($70).

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from St. Louis to Dallas on time: Envoy Air (83%), GOL (80%), American Airlines (77%).

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

    Looking at all options, your cheapest flight can be booked for $85. While the most popular route (Lambert-St Louis - Dallas/Fort Worth) can be booked for $139 on average our data indicates $952 when flying from St. Louis to Dallas.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Dallas 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 St. Louis to Dallas?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Dallas (average of $216). Flying from St. Louis to Dallas in March is currently the most expensive (average of $295). 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.

See more FAQs

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Alternative routes for St. Louis to Dallas

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from St. Louis to Dallas

Discover the top 3 airlines that operate flights from St. Louis to Dallas. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$59Average$147FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$174Average$365FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$176Average$302FlexibilityNo cancel feeOn-time63%

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