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Cheap flights from Dallas to St. Louis from $45

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dallas to St. Louis departing on 11/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
11:30 am - 2:46 pmDFW-STL
27h 16m1 stop
Frontier Logo
4:45 pm - 10:23 amSTL-DFW
17h 38m1 stop
$129Frontier
Find Deal
Tue, Jan 20 - Sun, Jan 25
American Airlines Logo
5:40 pm - 7:22 pmDFW-STL
1h 42mnonstop
American Airlines Logo
7:00 am - 9:11 amSTL-DFW
2h 11mnonstop
$139American Airlines
Find Deal
Thu, Dec 25 - Thu, Jan 1
Southwest Logo
6:05 pm - 7:45 pmDAL-STL
1h 40mnonstop
Southwest Logo
2:25 pm - 4:10 pmSTL-DAL
1h 45mnonstop
$139Southwest
Find Deal
Thu, Dec 25 - Thu, Jan 1
Frontier Logo
10:38 pm - 10:14 amDFW-STL
11h 36m1 stop
Frontier Logo
3:30 pm - 8:15 amSTL-DFW
16h 45m1 stop
$141Frontier
Find Deal
Fri, Dec 5 - Tue, Dec 9
Frontier Logo
9:59 pm - 10:02 amDFW-STL
12h 03m1 stop
Frontier Logo
3:43 pm - 10:59 pmSTL-DFW
7h 16m1 stop
$142Frontier
Find Deal
Fri, Jan 9 - Sun, Jan 11
Frontier Logo
9:00 pm - 8:59 amDFW-STL
11h 59m1 stop
Frontier Logo
9:07 am - 8:00 pmSTL-DFW
10h 53m1 stop
$144Frontier
Find Deal
Thu, Dec 11 - Mon, Dec 22
Southwest Logo
1:45 pm - 5:15 pmDAL-STL
3h 30m1 stop
Southwest Logo
10:15 am - 12:00 pmSTL-DAL
1h 45mnonstop
$149Southwest
Find Deal
Thu, Dec 25 - Thu, Jan 1
American Airlines Logo
8:49 am - 10:36 amDFW-STL
1h 47mnonstop
American Airlines Logo
1:20 pm - 3:22 pmSTL-DFW
2h 02mnonstop
$154American Airlines
Find Deal
Wed, Dec 10 - Wed, Dec 10
Southwest Logo
11:20 am - 1:05 pmDAL-STL
1h 45mnonstop
Southwest Logo
8:15 pm - 10:05 pmSTL-DAL
1h 50mnonstop
$159Southwest
Find Deal
Wed, Dec 10 - Wed, Dec 10
Southwest Logo
7:55 pm - 9:35 pmDAL-STL
1h 40mnonstop
Southwest Logo
8:15 pm - 10:05 pmSTL-DAL
1h 50mnonstop
$189Southwest
Find Deal
Mon, Dec 15 - Tue, Dec 16

Frontier flights from Dallas to St. Louis

Our best Frontier deals on Dallas to St. Louis flight tickets
Frontier
Jan 20
DFW11:30 amDallas/Fort Worth
27h 16m
1 stop
STL2:46 pmLambert-St Louis
Jan 25
STL4:45 pmLambert-St Louis
17h 38m
1 stop
DFW10:23 amDallas/Fort Worth
$129
Find similar
Frontier
Dec 5
DFW10:38 pmDallas/Fort Worth
11h 36m
1 stop
STL10:14 amLambert-St Louis
Dec 9
STL3:30 pmLambert-St Louis
16h 45m
1 stop
DFW8:15 amDallas/Fort Worth
$141
Find similar
Frontier
Jan 9
DFW9:59 pmDallas/Fort Worth
12h 03m
1 stop
STL10:02 amLambert-St Louis
Jan 11
STL3:43 pmLambert-St Louis
7h 16m
1 stop
DFW10:59 pmDallas/Fort Worth
$142
Find similar

American Airlines flights from Dallas to St. Louis

Our best American Airlines deals on Dallas to St. Louis flight tickets
American Airlines
Dec 25
DFW5:40 pmDallas/Fort Worth
1h 42m
STL7:22 pmLambert-St Louis
Jan 1
STL7:00 amLambert-St Louis
2h 11m
DFW9:11 amDallas/Fort Worth
$139
Find similar
American Airlines
Dec 10
DFW8:49 amDallas/Fort Worth
1h 47m
STL10:36 amLambert-St Louis
Dec 10
STL1:20 pmLambert-St Louis
2h 02m
DFW3:22 pmDallas/Fort Worth
$154
Find similar
American Airlines
Feb 19
DFW9:15 amDallas/Fort Worth
1h 45m
STL11:00 amLambert-St Louis
Feb 21
STL10:03 amLambert-St Louis
11h 27m
1 stop
DFW9:30 pmDallas/Fort Worth
$171
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Dallas to St. Louis 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, momondo users made 832,500 searches. Data last updated November 20, 2025.
Use the filters below to find and compare flights from Dallas to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Tue 1/20

11:30 am-2:46 pm

1 stop27h 16m

Lambert-St Louis

Sun 1/25

4:45 pm-10:23 am

1 stop17h 38m

$129

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 12/25

5:40 pm-7:22 pm

Nonstop1h 42m

Lambert-St Louis

Thu 1/1

7:00 am-9:11 am

Nonstop2h 11m

$139

DallasSt. Louis

DAL - STL

DALSTL

Dallas Love Field

Thu 12/25

6:05 pm-7:45 pm

Nonstop1h 40m

Lambert-St Louis

Thu 1/1

2:25 pm-4:10 pm

Nonstop1h 45m

$139

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Fri 12/5

10:38 pm-10:14 am

1 stop11h 36m

Lambert-St Louis

Tue 12/9

3:30 pm-8:15 am

1 stop16h 45m

$141

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Fri 1/9

9:59 pm-10:02 am

1 stop12h 03m

Lambert-St Louis

Sun 1/11

3:43 pm-10:59 pm

1 stop7h 16m

$142

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 12/11

9:00 pm-8:59 am

1 stop11h 59m

Lambert-St Louis

Mon 12/22

9:07 am-8:00 pm

1 stop10h 53m

$144

DallasSt. Louis

DAL - STL

DALSTL

Dallas Love Field

Thu 12/25

1:45 pm-5:15 pm

1 stop3h 30m

Lambert-St Louis

Thu 1/1

10:15 am-12:00 pm

Nonstop1h 45m

$149

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Wed 12/10

8:49 am-10:36 am

Nonstop1h 47m

Lambert-St Louis

Wed 12/10

1:20 pm-3:22 pm

Nonstop2h 02m

$154

DallasSt. Louis

DAL - STL

DALSTL

Dallas Love Field

Wed 12/10

11:20 am-1:05 pm

Nonstop1h 45m

Lambert-St Louis

Wed 12/10

8:15 pm-10:05 pm

Nonstop1h 50m

$159

DallasSt. Louis

DAL - STL

DALSTL

Dallas Love Field

Mon 12/15

7:55 pm-9:35 pm

Nonstop1h 40m

Lambert-St Louis

Tue 12/16

8:15 pm-10:05 pm

Nonstop1h 50m

$189

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Dallas to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

In general, August is the cheapest month to fly from Dallas to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $226. The month of July is another great option to travel to St. Louis, with average flight prices from Dallas averaging around $234.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $218. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $336. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Dallas in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $280 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $359 per ticket.

What is the cheapest Dallas to Lambert-St Louis flight route?

Fly from Dallas/Fort Worth to Lambert-St Louis for the best Dallas - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from Dallas when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $285 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Dallas for as low as $236 on momondo.

What cabin class options are available on Dallas to Lambert-St Louis flights?

There are 3 cabin classes available to choose from on Dallas to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Dallas to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Dallas to St. Louis

Fastest flight time

1h 40m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Dallas to St. Louis takes 1h 40m
Direct flights go from Dallas to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • How far is Dallas to Lambert-St Louis by plane?

    The straight-line distance from Dallas to Lambert-St Louis is 547.5 mi. Typically, this will take 1h 40m by plane in normal conditions.

  • When did momondo last update prices for flights from Dallas to Lambert-St Louis Airport?

    Prices for flights from Dallas to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Dallas to Lambert-St Louis Airport?

  • How old do you have to be to fly from Dallas to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Dallas to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Dallas to St. Louis

Compare and see reviews for airlines that fly from Dallas to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $82Free CancellationRating
5.8
3,104 reviews
Search Frontier flights
American AirlinesPriceFrom $175Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
SouthwestPriceFrom $177Free CancellationRating
8.0
4,249 reviews
Search Southwest flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Dallas to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Dallas to St. Louis for you.

Can I find flights from Dallas to St. Louis with flexible booking policies on momondo?

Flights from Dallas to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Dallas to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Dallas. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Dallas to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Dallas to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

An easier way to manage your St. Louis trip

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