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Cheap flights from North America to St. Louis from $28

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from North America to St. Louis departing on 1/7. 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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Find the cheapest flights from North America to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
3:26 pm - 6:32 pmDEN-STL
2h 06mnonstop
Frontier Logo
5:11 pm - 9:35 amSTL-DEN
17h 24m1 stop
$100Frontier
Find Deal
Fri, Jan 16 - Mon, Jan 19
Frontier Logo
6:50 am - 10:02 amDEN-STL
2h 12mnonstop
Frontier Logo
10:06 am - 11:07 pmSTL-DEN
14h 01m1 stop
$108Frontier
Find Deal
Mon, Jan 12 - Sun, Jan 18
American Airlines Logo
2:34 pm - 4:14 pmDFW-STL
1h 40mnonstop
American Airlines Logo
5:20 pm - 7:36 pmSTL-DFW
2h 16mnonstop
$140American Airlines
Find Deal
Sat, Jan 17 - Sun, Jan 18
Delta Logo
3:26 pm - 10:16 pmDFW-STL
6h 50m1 stop
Delta Logo
5:13 pm - 12:28 amSTL-DFW
7h 15m1 stop
$177Delta
Find Deal
Wed, Dec 24 - Wed, Dec 31
American Airlines Logo
10:45 am - 12:31 pmDFW-STL
1h 46mnonstop
American Airlines Logo
1:20 pm - 3:22 pmSTL-DFW
2h 02mnonstop
$189American Airlines
Find Deal
Mon, Dec 15 - Tue, Dec 16
Southwest Logo
12:35 pm - 2:05 pmDCA-STL
2h 30mnonstop
Southwest Logo
8:20 am - 11:15 amSTL-DCA
1h 55mnonstop
$235Southwest
Find Deal
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
8:40 am - 10:13 amIAD-STL
2h 33mnonstop
United Airlines Logo
8:30 am - 11:40 amSTL-IAD
2h 10mnonstop
$235United Airlines
Find Deal
Tue, Jan 27 - Wed, Jan 28
Southwest Logo
12:00 pm - 1:35 pmDCA-STL
2h 35mnonstop
Southwest Logo
3:50 pm - 6:50 pmSTL-DCA
2h 00mnonstop
$239Southwest
Find Deal
Thu, Jan 22 - Sat, Jan 24
United Airlines Logo
8:40 am - 10:13 amIAD-STL
2h 33mnonstop
United Airlines Logo
8:30 am - 11:40 amSTL-IAD
2h 10mnonstop
$239United Airlines
Find Deal
Thu, Jan 22 - Sat, Jan 24
Delta Logo
12:59 pm - 5:10 pmJFK-STL
5h 11m1 stop
Delta Logo
4:55 pm - 8:29 pmSTL-JFK
2h 34mnonstop
$291Delta
Find Deal
Tue, Dec 16 - Tue, Dec 23

Frontier flights from North America to St. Louis

Our best Frontier deals on North America to St. Louis flight tickets
Frontier
Jan 16
DEN3:26 pmDenver Intl
2h 06m
STL6:32 pmLambert-St Louis
Jan 19
STL5:11 pmLambert-St Louis
17h 24m
1 stop
DEN9:35 amDenver Intl
$100
Find similar
Frontier
Jan 12
DEN6:50 amDenver Intl
2h 12m
STL10:02 amLambert-St Louis
Jan 18
STL10:06 amLambert-St Louis
14h 01m
1 stop
DEN11:07 pmDenver Intl
$108
Find similar
Frontier
Jan 31
DEN11:38 amDenver Intl
2h 08m
STL2:46 pmLambert-St Louis
Feb 7
STL11:00 amLambert-St Louis
8h 59m
1 stop
DEN6:59 pmDenver Intl
$109
Find similar

United Airlines flights from North America to St. Louis

Our best United Airlines deals on North America to St. Louis flight tickets
United Airlines
Dec 15
DFW5:15 amDallas/Fort Worth
7h 00m
2 stops
STL12:15 pmLambert-St Louis
Dec 16
STL10:00 amLambert-St Louis
5h 32m
1 stop
DFW3:32 pmDallas/Fort Worth
$196
Find similar
United Airlines
Jan 22
IAD8:40 amWashington, D.C. Dulles Intl
2h 33m
STL10:13 amLambert-St Louis
Jan 24
STL8:30 amLambert-St Louis
2h 10m
IAD11:40 amWashington, D.C. Dulles Intl
$239
Find similar
United Airlines
Jan 7
IAD6:00 amWashington, D.C. Dulles Intl
5h 41m
1 stop
STL10:41 amLambert-St Louis
Jan 28
STL8:30 amLambert-St Louis
2h 10m
IAD11:40 amWashington, D.C. Dulles Intl
$249
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from North America 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 26, 2025.
Use the filters below to find and compare flights from North America to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Fri 1/16

3:26 pm-6:32 pm

Nonstop2h 06m

Lambert-St Louis

Mon 1/19

5:11 pm-9:35 am

1 stop17h 24m

$100

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Mon 1/12

6:50 am-10:02 am

Nonstop2h 12m

Lambert-St Louis

Sun 1/18

10:06 am-11:07 pm

1 stop14h 01m

$108

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Sat 1/17

2:34 pm-4:14 pm

Nonstop1h 40m

Lambert-St Louis

Sun 1/18

5:20 pm-7:36 pm

Nonstop2h 16m

$140

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Wed 12/24

3:26 pm-10:16 pm

1 stop6h 50m

Lambert-St Louis

Wed 12/31

5:13 pm-12:28 am

1 stop7h 15m

$177

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Mon 12/15

10:45 am-12:31 pm

Nonstop1h 46m

Lambert-St Louis

Tue 12/16

1:20 pm-3:22 pm

Nonstop2h 02m

$189

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 1/24

12:35 pm-2:05 pm

Nonstop2h 30m

Lambert-St Louis

Tue 1/27

8:20 am-11:15 am

Nonstop1h 55m

$235

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 1/27

8:40 am-10:13 am

Nonstop2h 33m

Lambert-St Louis

Wed 1/28

8:30 am-11:40 am

Nonstop2h 10m

$235

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 1/22

12:00 pm-1:35 pm

Nonstop2h 35m

Lambert-St Louis

Sat 1/24

3:50 pm-6:50 pm

Nonstop2h 00m

$239

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Thu 1/22

8:40 am-10:13 am

Nonstop2h 33m

Lambert-St Louis

Sat 1/24

8:30 am-11:40 am

Nonstop2h 10m

$239

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Tue 12/16

12:59 pm-5:10 pm

1 stop5h 11m

Lambert-St Louis

Tue 12/23

4:55 pm-8:29 pm

Nonstop2h 34m

$291

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 North America 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, March is the cheapest month to fly from North America to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $300. The month of January is another great option to travel to St. Louis, with average flight prices from North America averaging around $308.

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 Wednesday when prices can be found for as low as $319. 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 Sunday because tickets tend to average around $439. 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 North America in the morning is the least expensive time of day to depart. momondo users have found prices as low as $343 when looking at flights departing in the morning. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $373 per ticket.

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

Fly from Atlanta Hartsfield-Jackson to Lambert-St Louis for the best North America - Lambert-St Louis flight prices

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

There are 4 cabin classes available to choose from on North America 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.

Can stopping save me money on North America to St. Louis flights?

No. A direct flight is the cheapest option for a flight between North America to St. Louis.

Cheap North America to St. Louis flight deals and tips

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

Best Price Found

$87

Fastest flight time

1h 00m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from North America in the past 72 hours is $87. The best round-trip flight deal from North America to St. Louis found on momondo in the last 72 hours is $61.
The fastest flight from North America to St. Louis takes 1h 00m
Direct flights go from North America to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

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

    Prices for flights from North America to Lambert-St Louis Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from North America to Lambert-St Louis Airport.

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

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from North America to St. Louis?

Best airlines flying from North America to St. Louis

Compare and see reviews for airlines that fly from North America to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $65Free CancellationRating
5.8
3,099 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $80Free CancellationRating
6.3
8,158 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $133Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
United AirlinesPriceFrom $166Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights
DeltaPriceFrom $177Free CancellationRating
7.9
7,998 reviews
Search Delta flights
SouthwestPriceFrom $186Free CancellationRating
8.0
4,253 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $257Free CancellationRating
8.0
11,355 reviews
Search Alaska Airlines 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 North America to St. Louis?

It is quick and easy to find North America to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

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

Yes. momondo enables you to select and highlight flights to St. Louis from North America with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from North America to St. Louis.

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

Yes momondo offers price alerts on flights to St. Louis from North America. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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