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Cheap flights from North America to St. Louis from $24

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 2/25. 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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0 bags

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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
3:38 pm - 6:44 pmDEN-STL
2h 06mnonstop
Frontier Logo
9:45 pm - 10:32 amSTL-DEN
13h 47m1 stop
$99Frontier
Find Deal
Fri, Jan 23 - Mon, Jan 26
Frontier Logo
11:38 am - 2:46 pmDEN-STL
2h 08mnonstop
Frontier Logo
9:45 pm - 10:32 amSTL-DEN
13h 47m1 stop
$100Frontier
Find Deal
Sat, Jan 24 - Mon, Jan 26
American Airlines Logo
1:04 pm - 2:47 pmDFW-STL
1h 43mnonstop
American Airlines Logo
1:40 pm - 11:30 pmSTL-DFW
9h 50m1 stop
$149American Airlines
Find Deal
Fri, Jan 16 - Sat, Jan 17
American Airlines Logo
2:34 pm - 4:14 pmDFW-STL
1h 40mnonstop
American Airlines Logo
11:55 am - 1:59 pmSTL-DFW
2h 04mnonstop
$150American Airlines
Find Deal
Tue, Jan 6 - Thu, Jan 8
United Airlines Logo
8:40 am - 10:13 amIAD-STL
2h 33mnonstop
United Airlines Logo
9:57 am - 5:35 pmSTL-IAD
6h 38m1 stop
$245United Airlines
Find Deal
Sat, Jan 24 - Sat, Jan 31
Delta Logo
6:00 am - 9:39 amIAD-STL
4h 39m1 stop
Delta Logo
5:56 pm - 11:06 pmSTL-IAD
4h 10m1 stop
$255Delta
Find Deal
Wed, Jan 21 - Wed, Jan 21
United Airlines Logo
8:40 am - 10:07 amIAD-STL
2h 27mnonstop
United Airlines Logo
8:15 am - 11:24 amSTL-IAD
2h 09mnonstop
$258United Airlines
Find Deal
Wed, Dec 17 - Thu, Jan 1
Delta Logo
6:55 am - 8:44 amLGA-STL
2h 49mnonstop
Delta Logo
6:10 am - 9:34 amSTL-LGA
2h 24mnonstop
$289Delta
Find Deal
Tue, Mar 24 - Fri, Mar 27
Southwest Logo
6:00 am - 11:25 amLGA-STL
6h 25m1 stop
Southwest Logo
5:45 pm - 9:05 pmSTL-LGA
2h 20mnonstop
$296Southwest
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Tue, Dec 30 - Sat, Jan 10
Southwest Logo
6:25 am - 8:45 amBOS-STL
3h 20mnonstop
Southwest Logo
5:55 pm - 9:25 pmSTL-BOS
2h 30mnonstop
$359Southwest
Find Deal
Fri, Jan 23 - Mon, Jan 26

Frontier flights from North America to St. Louis

Our best Frontier deals on North America to St. Louis flight tickets
Frontier
Jan 23
DEN3:38 pmDenver Intl
2h 06m
STL6:44 pmLambert-St Louis
Jan 26
STL9:45 pmLambert-St Louis
13h 47m
1 stop
DEN10:32 amDenver Intl
$99
Find similar
Frontier
Jan 24
DEN11:38 amDenver Intl
2h 08m
STL2:46 pmLambert-St Louis
Jan 26
STL9:45 pmLambert-St Louis
13h 47m
1 stop
DEN10:32 amDenver Intl
$100
Find similar
Frontier
Jan 21
DEN11:20 amDenver Intl
11h 13m
1 stop
STL11:33 pmLambert-St Louis
Jan 28
STL3:46 pmLambert-St Louis
2h 37m
DEN5:23 pmDenver Intl
$103
Find similar

Delta flights from North America to St. Louis

Our best Delta deals on North America to St. Louis flight tickets
Delta
Feb 19
DFW5:22 amDallas/Fort Worth
5h 40m
1 stop
STL11:02 amLambert-St Louis
Feb 21
STL7:10 amLambert-St Louis
5h 26m
1 stop
DFW12:36 pmDallas/Fort Worth
$177
Find similar
Delta
Feb 6
SFO10:30 amSan Francisco
10h 53m
2 stops
STL11:23 pmLambert-St Louis
Feb 9
STL3:45 pmLambert-St Louis
8h 10m
1 stop
SFO9:55 pmSan Francisco
$245
Find similar
Delta
Jan 21
IAD6:00 amWashington, D.C. Dulles Intl
4h 39m
1 stop
STL9:39 amLambert-St Louis
Jan 21
STL5:56 pmLambert-St Louis
4h 10m
1 stop
IAD11:06 pmWashington, D.C. Dulles Intl
$255
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 December 3, 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 1/23

3:38 pm-6:44 pm

Nonstop2h 06m

Lambert-St Louis

Mon 1/26

9:45 pm-10:32 am

1 stop13h 47m

$99

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Sat 1/24

11:38 am-2:46 pm

Nonstop2h 08m

Lambert-St Louis

Mon 1/26

9:45 pm-10:32 am

1 stop13h 47m

$100

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Fri 1/16

1:04 pm-2:47 pm

Nonstop1h 43m

Lambert-St Louis

Sat 1/17

1:40 pm-11:30 pm

1 stop9h 50m

$149

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Tue 1/6

2:34 pm-4:14 pm

Nonstop1h 40m

Lambert-St Louis

Thu 1/8

11:55 am-1:59 pm

Nonstop2h 04m

$150

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Sat 1/24

8:40 am-10:13 am

Nonstop2h 33m

Lambert-St Louis

Sat 1/31

9:57 am-5:35 pm

1 stop6h 38m

$245

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 1/21

6:00 am-9:39 am

1 stop4h 39m

Lambert-St Louis

Wed 1/21

5:56 pm-11:06 pm

1 stop4h 10m

$255

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 12/17

8:40 am-10:07 am

Nonstop2h 27m

Lambert-St Louis

Thu 1/1

8:15 am-11:24 am

Nonstop2h 09m

$258

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 3/24

6:55 am-8:44 am

Nonstop2h 49m

Lambert-St Louis

Fri 3/27

6:10 am-9:34 am

Nonstop2h 24m

$289

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 12/30

6:00 am-11:25 am

1 stop6h 25m

Lambert-St Louis

Sat 1/10

5:45 pm-9:05 pm

Nonstop2h 20m

$296

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 1/23

6:25 am-8:45 am

Nonstop3h 20m

Lambert-St Louis

Mon 1/26

5:55 pm-9:25 pm

Nonstop2h 30m

$359

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 $299. 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 $312. 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 $442. 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. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $370 per ticket.

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

Fly from Orlando 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

$75

Fastest flight time

1h 05m

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 $75. 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 05m
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
3,092 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $80Free CancellationRating
6.3
8,161 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $133Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
DeltaPriceFrom $177Free CancellationRating
7.9
8,011 reviews
Search Delta flights
SouthwestPriceFrom $186Free CancellationRating
8.0
4,254 reviews
Search Southwest flights
United AirlinesPriceFrom $246Free CancellationRating
7.4
9,063 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $257Free CancellationRating
8.0
11,396 reviews
Search Alaska Airlines flights
Air CanadaPriceFrom $324Free CancellationRating
7.1
10,500 reviews
Search Air Canada 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
Maryland Heights
O'Fallon
Florissant
Fenton
Wentzville
Collinsville
St. Peters
Alton
Farmington
Clayton
Festus
Glencoe
Edwardsville
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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