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Cheap flights from North America to St. Louis from $39

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 11/23. 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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Cheap round-trip flights

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Frontier Logo
6:50 am - 10:02 amDEN-STL
2h 12mnonstop
Frontier Logo
8:45 am - 7:50 amSTL-DEN
24h 05m1 stop
$98Frontier
Find Deal
vie., ene. 9 - dom., ene. 11
Frontier Logo
6:50 am - 10:02 amDEN-STL
2h 12mnonstop
Frontier Logo
10:10 pm - 3:58 amSTL-DEN
6h 48m1 stop
$100Frontier
Find Deal
vie., dic. 26 - lun., dic. 29
Frontier Logo
6:50 am - 10:02 amDEN-STL
2h 12mnonstop
Frontier Logo
9:54 pm - 3:58 amSTL-DEN
7h 04m1 stop
$101Frontier
Find Deal
lun., nov. 24 - lun., dic. 1
United Airlines Logo
12:42 pm - 5:43 pmEWR-STL
6h 01m1 stop
United Airlines Logo
11:22 am - 2:58 pmSTL-EWR
2h 36mnonstop
$251United Airlines
Find Deal
mié., ene. 21 - sáb., ene. 24
Delta Logo
6:00 am - 9:38 amEWR-STL
4h 38m1 stop
Delta Logo
6:35 am - 12:11 pmSTL-EWR
4h 36m1 stop
$261Delta
Find Deal
mié., feb. 18 - mar., feb. 24
American Airlines Logo
7:00 am - 9:15 pmEWR-STL
15h 15m1 stop
American Airlines Logo
6:44 pm - 11:13 amSTL-EWR
15h 29m1 stop
$263American Airlines
Find Deal
mar., feb. 10 - mié., feb. 11
United Airlines Logo
9:54 pm - 11:43 pmEWR-STL
2h 49mnonstop
United Airlines Logo
7:00 am - 10:25 amSTL-EWR
2h 25mnonstop
$267United Airlines
Find Deal
mar., dic. 30 - dom., ene. 4
American Airlines Logo
7:02 am - 4:23 pmEWR-STL
10h 21m1 stop
American Airlines Logo
4:53 pm - 10:34 pmSTL-EWR
4h 41m1 stop
$268American Airlines
Find Deal
jue., ene. 1 - dom., ene. 4
Delta Logo
6:55 am - 8:59 amLGA-STL
3h 04mnonstop
Delta Logo
5:54 pm - 11:42 pmSTL-LGA
4h 48m1 stop
$277Delta
Find Deal
vie., feb. 20 - sáb., feb. 21
Spirit Airlines Logo
5:45 am - 1:52 pmBOS-STL
9h 07m1 stop
Spirit Airlines Logo
2:47 pm - 11:56 pmSTL-BOS
8h 09m1 stop
$318Spirit Airlines
Find Deal
jue., dic. 11 - dom., dic. 14

Frontier flights from North America to St. Louis

Our best Frontier deals on North America to St. Louis flight tickets
Frontier
Jan 9
DEN6:50 amDenver Intl
2h 12m
STL10:02 amLambert-St Louis
Jan 11
STL8:45 amLambert-St Louis
24h 05m
1 stop
DEN7:50 amDenver Intl
$98
Find similar
Frontier
Dec 26
DEN6:50 amDenver Intl
2h 12m
STL10:02 amLambert-St Louis
Dec 29
STL10:10 pmLambert-St Louis
6h 48m
1 stop
DEN3:58 amDenver Intl
$100
Find similar
Frontier
Nov 24
DEN6:50 amDenver Intl
2h 12m
STL10:02 amLambert-St Louis
Dec 1
STL9:54 pmLambert-St Louis
7h 04m
1 stop
DEN3:58 amDenver Intl
$101
Find similar

American Airlines flights from North America to St. Louis

Our best American Airlines deals on North America to St. Louis flight tickets
American Airlines
Dec 9
DFW2:54 pmDallas/Fort Worth
1h 40m
STL4:34 pmLambert-St Louis
Dec 16
STL9:30 amLambert-St Louis
2h 04m
DFW11:34 amDallas/Fort Worth
$149
Find similar
American Airlines
Nov 24
DFW9:04 pmDallas/Fort Worth
1h 55m
STL10:59 pmLambert-St Louis
Dec 8
STL7:00 amLambert-St Louis
2h 16m
DFW9:16 amDallas/Fort Worth
$179
Find similar
American Airlines
Nov 27
DFW10:45 amDallas/Fort Worth
1h 52m
STL12:37 pmLambert-St Louis
Dec 2
STL9:36 amLambert-St Louis
1h 59m
DFW11:35 amDallas/Fort Worth
$184
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 noviembre 13, 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

vie. 1/9

6:50 am-10:02 am

Nonstop2h 12m

Lambert-St Louis

dom. 1/11

8:45 am-7:50 am

1 stop24h 05m

$98

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

vie. 12/26

6:50 am-10:02 am

Nonstop2h 12m

Lambert-St Louis

lun. 12/29

10:10 pm-3:58 am

1 stop6h 48m

$100

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

lun. 11/24

6:50 am-10:02 am

Nonstop2h 12m

Lambert-St Louis

lun. 12/1

9:54 pm-3:58 am

1 stop7h 04m

$101

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

mié. 1/21

12:42 pm-5:43 pm

1 stop6h 01m

Lambert-St Louis

sáb. 1/24

11:22 am-2:58 pm

Nonstop2h 36m

$251

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

mié. 2/18

6:00 am-9:38 am

1 stop4h 38m

Lambert-St Louis

mar. 2/24

6:35 am-12:11 pm

1 stop4h 36m

$261

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

mar. 2/10

7:00 am-9:15 pm

1 stop15h 15m

Lambert-St Louis

mié. 2/11

6:44 pm-11:13 am

1 stop15h 29m

$263

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

mar. 12/30

9:54 pm-11:43 pm

Nonstop2h 49m

Lambert-St Louis

dom. 1/4

7:00 am-10:25 am

Nonstop2h 25m

$267

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

jue. 1/1

7:02 am-4:23 pm

1 stop10h 21m

Lambert-St Louis

dom. 1/4

4:53 pm-10:34 pm

1 stop4h 41m

$268

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

vie. 2/20

6:55 am-8:59 am

Nonstop3h 04m

Lambert-St Louis

sáb. 2/21

5:54 pm-11:42 pm

1 stop4h 48m

$277

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 12/11

5:45 am-1:52 pm

1 stop9h 07m

Lambert-St Louis

dom. 12/14

2:47 pm-11:56 pm

1 stop8h 09m

$318

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 $306.

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 $344 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 $377 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

$89

Fastest flight time

1h 39m

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 $89. 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 39m
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
3,114 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $80Free CancellationRating
6.3
8,139 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $133Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
United AirlinesPriceFrom $166Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
DeltaPriceFrom $168Free CancellationRating
7.9
8,007 reviews
Search Delta flights
SouthwestPriceFrom $186Free CancellationRating
8.0
4,236 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $257Free CancellationRating
8.0
11,281 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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