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Cheap flights from North America to St. Louis from $40

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 3/18. 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
10:01 am - 1:09 pm
DEN
-
STL
2h 08mnonstop
Frontier Logo
1:54 pm - 3:30 pm
STL
-
DEN
2h 36mnonstop
$79Frontier
sex, fev 20 - seg, fev 23
Frontier Logo
10:01 am - 1:09 pm
DEN
-
STL
2h 08mnonstop
Frontier Logo
1:54 pm - 3:30 pm
STL
-
DEN
2h 36mnonstop
$80Frontier
sex, fev 20 - seg, fev 23
Frontier Logo
10:48 am - 1:56 pm
DEN
-
STL
2h 08mnonstop
Frontier Logo
8:22 pm - 11:56 am
STL
-
DEN
16h 34m
1 stop
$84Frontier
sáb, fev 28 - seg, mar 2
Southwest Logo
7:45 am - 9:35 am
MSP
-
STL
1h 50mnonstop
Southwest Logo
8:20 pm - 9:50 pm
STL
-
MSP
1h 30mnonstop
$97Southwest
ter, fev 24 - ter, mar 3
Southwest Logo
6:20 am - 1:55 pm
MSP
-
STL
7h 35m
1 stop
Southwest Logo
8:20 pm - 9:50 pm
STL
-
MSP
1h 30mnonstop
$107Southwest
ter, fev 24 - ter, mar 3
Delta Logo
9:51 pm - 11:23 pm
MSP
-
STL
1h 32mnonstop
Delta Logo
6:10 am - 7:46 am
STL
-
MSP
1h 36mnonstop
$144Delta
qua, fev 25 - seg, mar 2
Delta Logo
6:00 am - 11:02 am
IAD
-
STL
6h 02m
1 stop
Delta Logo
5:50 pm - 11:09 pm
STL
-
IAD
4h 19m
1 stop
$253Delta
sáb, fev 21 - qua, fev 25
United Airlines Logo
6:45 pm - 8:23 pm
IAD
-
STL
2h 38mnonstop
United Airlines Logo
8:30 am - 11:40 am
STL
-
IAD
2h 10mnonstop
$262United Airlines
ter, fev 24 - ter, mar 3
American Airlines Logo
7:40 pm - 9:36 pm
LGA
-
STL
2h 56mnonstop
American Airlines Logo
2:37 pm - 11:59 pm
STL
-
LGA
8h 22m
1 stop
$267American Airlines
sex, mar 13 - ter, mar 17
American Airlines Logo
6:30 am - 11:29 am
JFK
-
STL
5h 59m
1 stop
American Airlines Logo
6:00 am - 2:59 pm
STL
-
JFK
7h 59m
1 stop
$274American Airlines
seg, mar 30 - qua, abr 1

United Airlines flights from North America to St. Louis

Our best United Airlines deals on North America to St. Louis flight tickets
United Airlines
Mar 4
DFW5:15 amDallas/Fort Worth
4h 08m
1 stop
STL9:23 amLambert-St Louis
Mar 4
STL6:00 pmLambert-St Louis
5h 21m
1 stop
DFW11:21 pmDallas/Fort Worth
$209
United Airlines
Feb 21
IAD1:20 pmWashington, D.C. Dulles Intl
5h 24m
1 stop
STL5:44 pmLambert-St Louis
Feb 24
STL11:25 amLambert-St Louis
5h 05m
1 stop
IAD5:30 pmWashington, D.C. Dulles Intl
$253
United Airlines
Feb 24
IAD6:45 pmWashington, D.C. Dulles Intl
2h 38m
STL8:23 pmLambert-St Louis
Mar 3
STL8:30 amLambert-St Louis
2h 10m
IAD11:40 amWashington, D.C. Dulles Intl
$262

Frontier flights from North America to St. Louis

Our best Frontier deals on North America to St. Louis flight tickets
Frontier
Feb 20
DEN10:01 amDenver Intl
2h 08m
STL1:09 pmLambert-St Louis
Feb 23
STL1:54 pmLambert-St Louis
2h 36m
DEN3:30 pmDenver Intl
$79
Frontier
Feb 20
DEN10:01 amDenver Intl
2h 08m
STL1:09 pmLambert-St Louis
Feb 23
STL1:54 pmLambert-St Louis
2h 36m
DEN3:30 pmDenver Intl
$80
Frontier
Feb 6
DEN3:38 pmDenver Intl
2h 06m
STL6:44 pmLambert-St Louis
Feb 8
STL12:03 pmLambert-St Louis
2h 33m
DEN1:36 pmDenver Intl
$81

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 janeiro 29, 2026.
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

sex 2/20

10:01 am-1:09 pm

Nonstop2h 08m

Lambert-St Louis

seg 2/23

1:54 pm-3:30 pm

Nonstop2h 36m

$79

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

sex 2/20

10:01 am-1:09 pm

Nonstop2h 08m

Lambert-St Louis

seg 2/23

1:54 pm-3:30 pm

Nonstop2h 36m

$80

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

sáb 2/28

10:48 am-1:56 pm

Nonstop2h 08m

Lambert-St Louis

seg 3/2

8:22 pm-11:56 am

1 stop16h 34m

$84

MinneapolisSt. Louis

MSP - STL

MSPSTL

Minneapolis St Paul

ter 2/24

7:45 am-9:35 am

Nonstop1h 50m

Lambert-St Louis

ter 3/3

8:20 pm-9:50 pm

Nonstop1h 30m

$97

MinneapolisSt. Louis

MSP - STL

MSPSTL

Minneapolis St Paul

ter 2/24

6:20 am-1:55 pm

1 stop7h 35m

Lambert-St Louis

ter 3/3

8:20 pm-9:50 pm

Nonstop1h 30m

$107

MinneapolisSt. Louis

MSP - STL

MSPSTL

Minneapolis St Paul

qua 2/25

9:51 pm-11:23 pm

Nonstop1h 32m

Lambert-St Louis

seg 3/2

6:10 am-7:46 am

Nonstop1h 36m

$144

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

sáb 2/21

6:00 am-11:02 am

1 stop6h 02m

Lambert-St Louis

qua 2/25

5:50 pm-11:09 pm

1 stop4h 19m

$253

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

ter 2/24

6:45 pm-8:23 pm

Nonstop2h 38m

Lambert-St Louis

ter 3/3

8:30 am-11:40 am

Nonstop2h 10m

$262

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

sex 3/13

7:40 pm-9:36 pm

Nonstop2h 56m

Lambert-St Louis

ter 3/17

2:37 pm-11:59 pm

1 stop8h 22m

$267

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

seg 3/30

6:30 am-11:29 am

1 stop5h 59m

Lambert-St Louis

qua 4/1

6:00 am-2:59 pm

1 stop7h 59m

$274

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 $302. The month of April 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 $314. 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 $441. 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

$113

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 $113. 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 in St. Louis. From North America there are direct flights to 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 $52Free CancellationRating
5.7
3,056 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $54Free CancellationRating
6.3
8,394 reviews
Search Spirit Airlines flights
DeltaPriceFrom $126Free CancellationRating
7.9
8,127 reviews
Search Delta flights
American AirlinesPriceFrom $133Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
United AirlinesPriceFrom $154Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
SouthwestPriceFrom $177Free CancellationRating
8.0
4,267 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $257Free CancellationRating
8.0
11,808 reviews
Search Alaska Airlines flights
JetBluePriceFrom $385Free CancellationRating
7.2
2,891 reviews
Search JetBlue 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
Florissant
O'Fallon
Collinsville
Fenton
St. Peters
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Glencoe
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.

An easier way to manage your St. Louis trip

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