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Cheap flights from North America to St. Louis from $23

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.
1 adult
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 - 7:41 pm
DEN
-
STL
12h 41m1 stop
Frontier Logo
7:43 pm - 9:15 pm
STL
-
DEN
2h 32mnonstop
$104Frontier
Fri, Feb 20 - Mon, Feb 23
Frontier Logo
6:50 am - 10:02 am
DEN
-
STL
2h 12mnonstop
Frontier Logo
8:32 pm - 12:21 pm
STL
-
DEN
16h 49m1 stop
$106Frontier
Sat, Jan 10 - Wed, Jan 14
United Airlines Logo
8:35 am - 10:08 am
IAD
-
STL
2h 33mnonstop
United Airlines Logo
8:15 am - 11:24 am
STL
-
IAD
2h 09mnonstop
$262United Airlines
Thu, Dec 25 - Thu, Jan 1
United Airlines Logo
8:40 am - 10:13 am
IAD
-
STL
2h 33mnonstop
United Airlines Logo
12:44 pm - 3:55 pm
STL
-
IAD
2h 11mnonstop
$265United Airlines
Wed, Jan 21 - Thu, Jan 22
Southwest Logo
2:35 pm - 4:30 pm
HOU
-
STL
1h 55mnonstop
Southwest Logo
7:55 pm - 10:10 pm
STL
-
HOU
2h 15mnonstop
$277Southwest
Wed, Jan 14 - Wed, Jan 14
Southwest Logo
7:20 am - 9:25 am
LGA
-
STL
3h 05mnonstop
Southwest Logo
5:45 pm - 9:05 pm
STL
-
LGA
2h 20mnonstop
$281Southwest
Sat, Jan 24 - Sat, Jan 24
Delta Logo
2:59 pm - 4:59 pm
JFK
-
STL
3h 00mnonstop
Delta Logo
6:35 am - 12:03 pm
STL
-
JFK
4h 28m1 stop
$286Delta
Wed, Dec 31 - Tue, Jan 6
American Airlines Logo
4:17 pm - 9:51 pm
LGA
-
STL
6h 34m1 stop
American Airlines Logo
6:00 am - 11:18 am
STL
-
LGA
4h 18m1 stop
$287American Airlines
Fri, Jan 9 - Sat, Jan 10
American Airlines Logo
7:20 pm - 11:12 pm
JFK
-
STL
4h 52m1 stop
American Airlines Logo
9:54 am - 2:57 pm
STL
-
JFK
4h 03m1 stop
$287American Airlines
Tue, Jan 13 - Thu, Jan 29
Delta Logo
6:05 pm - 8:06 pm
LGA
-
STL
3h 01mnonstop
Delta Logo
9:45 am - 1:11 pm
STL
-
LGA
2h 26mnonstop
$293Delta
Fri, Jan 23 - Sun, Jan 25

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 14
DEN10:10 amDenver Intl
2h 06m
STL1:16 pmLambert-St Louis
Jan 21
STL6:00 pmLambert-St Louis
2h 38m
DEN7:38 pmDenver Intl
$157
Find similar
United Airlines
Jan 18
EWR8:35 amNewark
3h 06m
STL10:41 amLambert-St Louis
Jan 20
STL5:59 pmLambert-St Louis
2h 44m
EWR9:43 pmNewark
$241
Find similar
United Airlines
Dec 25
EWR9:54 pmNewark
2h 49m
STL11:43 pmLambert-St Louis
Jan 1
STL7:00 amLambert-St Louis
2h 34m
EWR10:34 amNewark
$255
Find similar

Delta flights from North America to St. Louis

Our best Delta deals on North America to St. Louis flight tickets
Delta
Dec 24
DFW3:26 pmDallas/Fort Worth
6h 50m
1 stop
STL10:16 pmLambert-St Louis
Jan 1
STL9:47 amLambert-St Louis
7h 30m
1 stop
DFW5:17 pmDallas/Fort Worth
$225
Find similar
Delta
Feb 4
DFW7:00 amDallas/Fort Worth
4h 54m
1 stop
STL11:54 amLambert-St Louis
Feb 21
STL5:00 pmLambert-St Louis
7h 16m
1 stop
DFW12:16 amDallas/Fort Worth
$251
Find similar
Delta
Jan 8
SFO10:35 amSan Francisco
10h 50m
2 stops
STL11:25 pmLambert-St Louis
Jan 14
STL7:00 amLambert-St Louis
12h 49m
2 stops
SFO5:49 pmSan Francisco
$274
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 11, 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 2/20

6:00 am-7:41 pm

1 stop12h 41m

Lambert-St Louis

Mon 2/23

7:43 pm-9:15 pm

Nonstop2h 32m

$104

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Sat 1/10

6:50 am-10:02 am

Nonstop2h 12m

Lambert-St Louis

Wed 1/14

8:32 pm-12:21 pm

1 stop16h 49m

$106

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Thu 12/25

8:35 am-10:08 am

Nonstop2h 33m

Lambert-St Louis

Thu 1/1

8:15 am-11:24 am

Nonstop2h 09m

$262

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 1/21

8:40 am-10:13 am

Nonstop2h 33m

Lambert-St Louis

Thu 1/22

12:44 pm-3:55 pm

Nonstop2h 11m

$265

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Wed 1/14

2:35 pm-4:30 pm

Nonstop1h 55m

Lambert-St Louis

Wed 1/14

7:55 pm-10:10 pm

Nonstop2h 15m

$277

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Sat 1/24

7:20 am-9:25 am

Nonstop3h 05m

Lambert-St Louis

Sat 1/24

5:45 pm-9:05 pm

Nonstop2h 20m

$281

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Wed 12/31

2:59 pm-4:59 pm

Nonstop3h 00m

Lambert-St Louis

Tue 1/6

6:35 am-12:03 pm

1 stop4h 28m

$286

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Fri 1/9

4:17 pm-9:51 pm

1 stop6h 34m

Lambert-St Louis

Sat 1/10

6:00 am-11:18 am

1 stop4h 18m

$287

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Tue 1/13

7:20 pm-11:12 pm

1 stop4h 52m

Lambert-St Louis

Thu 1/29

9:54 am-2:57 pm

1 stop4h 03m

$287

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Fri 1/23

6:05 pm-8:06 pm

Nonstop3h 01m

Lambert-St Louis

Sun 1/25

9:45 am-1:11 pm

Nonstop2h 26m

$293

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 $303.

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 $311. 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. In the evening 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

$73

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 $73. 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
3,084 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $80Free CancellationRating
6.3
8,174 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $133Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
United AirlinesPriceFrom $166Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
DeltaPriceFrom $177Free CancellationRating
7.9
8,009 reviews
Search Delta flights
SouthwestPriceFrom $186Free CancellationRating
7.9
4,252 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $257Free CancellationRating
8.0
11,431 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
Wentzville
St. Peters
Collinsville
Alton
Farmington
Festus
Clayton
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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