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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 1/14. 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
6:00 am - 3:53 pm
ATL
-
STL
10h 53m1 stop
Frontier Logo
8:17 pm - 10:57 pm
STL
-
ATL
1h 40mnonstop
$93Frontier
Wed, Feb 18 - Sat, Feb 21
Frontier Logo
7:45 am - 10:27 pm
ATL
-
STL
15h 42m1 stop
Frontier Logo
8:17 pm - 10:57 pm
STL
-
ATL
1h 40mnonstop
$100Frontier
Tue, Feb 24 - Wed, Mar 4
United Airlines Logo
8:40 am - 10:13 am
IAD
-
STL
2h 33mnonstop
United Airlines Logo
8:30 am - 11:40 am
STL
-
IAD
2h 10mnonstop
$265United Airlines
Thu, Jan 29 - Sat, Jan 31
United Airlines Logo
6:00 am - 10:41 am
IAD
-
STL
5h 41m1 stop
United Airlines Logo
12:44 pm - 3:55 pm
STL
-
IAD
2h 11mnonstop
$271United Airlines
Sat, Jan 17 - Mon, Jan 19
American Airlines Logo
10:09 am - 3:23 pm
LGA
-
STL
6h 14m1 stop
American Airlines Logo
2:23 pm - 5:49 pm
STL
-
LGA
2h 26mnonstop
$276American Airlines
Tue, Jun 9 - Thu, Jun 18
American Airlines Logo
5:16 pm - 9:51 pm
JFK
-
STL
5h 35m1 stop
American Airlines Logo
11:05 am - 7:31 pm
STL
-
JFK
7h 26m1 stop
$277American Airlines
Wed, Jan 14 - Wed, Jan 21
Delta Logo
1:55 pm - 3:43 pm
LGA
-
STL
2h 48mnonstop
Delta Logo
6:45 am - 2:02 pm
STL
-
LGA
6h 17m1 stop
$277Delta
Tue, May 12 - Sat, May 16
Southwest Logo
6:30 am - 5:10 pm
LGA
-
STL
11h 40m2 stops
Southwest Logo
6:05 am - 1:30 pm
STL
-
LGA
6h 25m1 stop
$282Southwest
Tue, Jan 27 - Tue, Feb 3
Delta Logo
6:59 am - 8:44 am
LGA
-
STL
2h 45mnonstop
Delta Logo
6:00 am - 9:27 am
STL
-
LGA
2h 27mnonstop
$289Delta
Fri, May 22 - Tue, May 26
Southwest Logo
6:25 am - 8:45 am
BOS
-
STL
3h 20mnonstop
Southwest Logo
8:45 am - 12:20 pm
STL
-
BOS
2h 35mnonstop
$341Southwest
Thu, Jan 22 - Sat, Jan 24

United Airlines flights from North America to St. Louis

Our best United Airlines deals on North America to St. Louis flight tickets
United Airlines
Jan 23
DEN1:53 pmDenver Intl
2h 02m
STL4:55 pmLambert-St Louis
Jan 26
STL8:45 amLambert-St Louis
2h 36m
DEN10:21 amDenver Intl
$217
Find similar
United Airlines
Jan 28
DFW2:23 pmDallas/Fort Worth
8h 35m
2 stops
STL10:58 pmLambert-St Louis
Jan 29
STL6:00 amLambert-St Louis
5h 25m
1 stop
DFW11:25 amDallas/Fort Worth
$218
Find similar
United Airlines
Jan 27
EWR3:16 pmNewark
3h 02m
STL5:18 pmLambert-St Louis
Feb 3
STL7:00 amLambert-St Louis
2h 37m
EWR10:37 amNewark
$241
Find similar

Frontier flights from North America to St. Louis

Our best Frontier deals on North America to St. Louis flight tickets
Frontier
Jan 21
ATL9:08 amAtlanta Hartsfield-Jackson
15h 25m
1 stop
STL11:33 pmLambert-St Louis
Jan 24
STL8:22 pmLambert-St Louis
1h 44m
ATL11:06 pmAtlanta Hartsfield-Jackson
$93
Find similar
Frontier
Feb 24
ATL7:45 amAtlanta Hartsfield-Jackson
15h 42m
1 stop
STL10:27 pmLambert-St Louis
Mar 4
STL8:17 pmLambert-St Louis
1h 40m
ATL10:57 pmAtlanta Hartsfield-Jackson
$100
Find similar
Frontier
Feb 23
ATL6:00 amAtlanta Hartsfield-Jackson
1h 51m
STL6:51 amLambert-St Louis
Feb 27
STL8:22 pmLambert-St Louis
1h 40m
ATL11:02 pmAtlanta Hartsfield-Jackson
$102
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 23, 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

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Wed 2/18

6:00 am-3:53 pm

1 stop10h 53m

Lambert-St Louis

Sat 2/21

8:17 pm-10:57 pm

Nonstop1h 40m

$93

AtlantaSt. Louis

ATL - STL

ATLSTL

Atlanta Hartsfield-Jackson

Tue 2/24

7:45 am-10:27 pm

1 stop15h 42m

Lambert-St Louis

Wed 3/4

8:17 pm-10:57 pm

Nonstop1h 40m

$100

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Thu 1/29

8:40 am-10:13 am

Nonstop2h 33m

Lambert-St Louis

Sat 1/31

8:30 am-11:40 am

Nonstop2h 10m

$265

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Sat 1/17

6:00 am-10:41 am

1 stop5h 41m

Lambert-St Louis

Mon 1/19

12:44 pm-3:55 pm

Nonstop2h 11m

$271

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 6/9

10:09 am-3:23 pm

1 stop6h 14m

Lambert-St Louis

Thu 6/18

2:23 pm-5:49 pm

Nonstop2h 26m

$276

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Wed 1/14

5:16 pm-9:51 pm

1 stop5h 35m

Lambert-St Louis

Wed 1/21

11:05 am-7:31 pm

1 stop7h 26m

$277

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 5/12

1:55 pm-3:43 pm

Nonstop2h 48m

Lambert-St Louis

Sat 5/16

6:45 am-2:02 pm

1 stop6h 17m

$277

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 1/27

6:30 am-5:10 pm

2 stops11h 40m

Lambert-St Louis

Tue 2/3

6:05 am-1:30 pm

1 stop6h 25m

$282

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Fri 5/22

6:59 am-8:44 am

Nonstop2h 45m

Lambert-St Louis

Tue 5/26

6:00 am-9:27 am

Nonstop2h 27m

$289

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 1/22

6:25 am-8:45 am

Nonstop3h 20m

Lambert-St Louis

Sat 1/24

8:45 am-12:20 pm

Nonstop2h 35m

$341

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, January 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 March is another great option to travel to St. Louis, with average flight prices from North America averaging around $299.

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 $310. 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 afternoon is the least expensive time of day to depart. momondo users have found prices as low as $341 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 $368 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

$74

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 $74. 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 $65Free CancellationRating
5.8
3,076 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $71Free CancellationRating
6.3
8,196 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $133Free CancellationRating
7.2
11,053 reviews
Search American Airlines flights
United AirlinesPriceFrom $166Free CancellationRating
7.4
9,103 reviews
Search United Airlines flights
DeltaPriceFrom $177Free CancellationRating
7.9
8,014 reviews
Search Delta flights
SouthwestPriceFrom $186Free CancellationRating
8.0
4,253 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $257Free CancellationRating
8.0
11,506 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
Maryland Heights
O'Fallon
Florissant
Fenton
St. Peters
Wentzville
Collinsville
Alton
Farmington
Clayton
Festus
Glencoe
Eureka
Edwardsville
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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