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Cheap flights from the United States to St. Louis from $38

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to St. Louis departing on 2/12. 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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Find the cheapest flights from the United States to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from the United States to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from the United States to St. Louis.

Cheap last minute flights

Planning a quick getaway from the United States to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals to St. Louis

Find recent round-trip train or bus tickets from the United States to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
5:05 am - 8:13 amDEN-STL
2h 08mnonstop
6:46 pm - 8:22 pmSTL-DEN
2h 36mnonstop
$67Frontier
Find Deal
Sat, Dec 14 - Mon, Dec 16
9:44 pm - 11:27 pmMCO-STL
2h 43mnonstop
5:05 pm - 8:38 pmSTL-MCO
2h 33mnonstop
$68Frontier
Find Deal
Tue, Jan 14 - Wed, Jan 15
7:47 am - 2:36 pmDEN-STL
5h 49m1 stop
4:39 pm - 6:15 pmSTL-DEN
2h 36mnonstop
$187United Airlines
Find Deal
Thu, Feb 27 - Wed, Mar 5
9:40 am - 12:48 pmDEN-STL
2h 08mnonstop
8:27 am - 10:05 amSTL-DEN
2h 38mnonstop
$197United Airlines
Find Deal
Sun, Jan 26 - Fri, Jan 31
5:10 am - 9:35 amBOS-STL
5h 25m1 stop
3:40 pm - 9:21 pmSTL-BOS
4h 41m1 stop
$216Delta
Find Deal
Wed, Dec 18 - Wed, Dec 18
7:44 am - 9:21 amDCA-STL
2h 37mnonstop
9:51 am - 12:59 pmSTL-DCA
2h 08mnonstop
$229American Airlines
Find Deal
Thu, Dec 12 - Tue, Dec 17
5:00 pm - 9:43 pmBOS-STL
5h 43m1 stop
5:55 pm - 11:51 pmSTL-BOS
4h 56m1 stop
$236Delta
Find Deal
Tue, Dec 24 - Wed, Dec 25
4:05 pm - 7:25 pmDCA-STL
4h 20m1 stop
8:45 am - 11:40 amSTL-DCA
1h 55mnonstop
$239Southwest
Find Deal
Sun, Feb 16 - Fri, Feb 21
9:15 am - 7:30 pmSFO-STL
8h 15m2 stops
1:40 pm - 8:57 pmSTL-SFO
9h 17m1 stop
$241American Airlines
Find Deal
Wed, Jan 8 - Wed, Jan 15
7:20 am - 9:15 amLGA-STL
2h 55mnonstop
7:45 pm - 11:05 pmSTL-LGA
2h 20mnonstop
$243Southwest
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Thu, Dec 12 - Tue, Dec 24
9:56 pm - 11:43 pmMCO-STL
2h 47mnonstop
$38Frontier
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Wed, Feb 12
5:05 am - 8:13 amDEN-STL
2h 08mnonstop
$38Frontier
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Sat, Dec 7
9:40 am - 12:48 pmDEN-STL
2h 08mnonstop
$79United Airlines
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Tue, Feb 11
6:00 am - 12:16 pmDEN-STL
5h 16m1 stop
$88United Airlines
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Tue, Jan 7
10:20 am - 12:32 pmLGA-STL
3h 12mnonstop
$100Delta
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Tue, Jan 21
8:00 am - 12:32 pmBOS-STL
5h 32m1 stop
$108Delta
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Wed, Feb 19
7:45 am - 1:37 pmJFK-STL
6h 52m1 stop
$109American Airlines
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Tue, Dec 31
7:20 pm - 10:20 pmDEN-STL
2h 00mnonstop
$109Southwest
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Tue, Jan 21
1:22 pm - 10:10 pmSFO-STL
6h 48m1 stop
$113American Airlines
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Wed, Nov 27
7:35 pm - 8:20 pmATL-STL
1h 45mnonstop
$121Southwest
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Thu, Feb 20
8:01 am - 7:41 amATL-STL
24h 40m1 stop
5:02 pm - 7:27 pmSTL-ATL
25h 25m1 stop
$131Frontier
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Tue, Nov 26 - Wed, Dec 4
8:25 pm - 3:30 pmATL-STL
20h 05m1 stop
2:10 pm - 9:05 amSTL-ATL
17h 55m1 stop
$226Southern / Mokulele
Find Deal
Mon, Nov 25 - Thu, Nov 28
12:55 am - 9:09 amDEN-STL
7h 14m1 stop
10:21 am - 4:12 pmSTL-DEN
6h 51m1 stop
$336Delta
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Tue, Nov 26 - Tue, Dec 3
6:30 am - 1:27 pmJFK-STL
7h 57m1 stop
6:30 am - 2:16 pmSTL-JFK
6h 46m1 stop
$398American Airlines
Find Deal
Tue, Nov 26 - Thu, Nov 28
6:25 am - 8:43 amBOS-STL
3h 18mnonstop
10:01 am - 6:16 pmSTL-BOS
7h 15m1 stop
$421American Airlines
Find Deal
Tue, Nov 26 - Tue, Nov 26
6:00 am - 7:55 amLGA-STL
2h 55mnonstop
7:35 pm - 10:55 pmSTL-LGA
2h 20mnonstop
$454Southwest
Find Deal
Mon, Nov 25 - Wed, Nov 27
1:15 pm - 1:55 pmATL-STL
1h 40mnonstop
7:45 am - 10:20 amSTL-ATL
1h 35mnonstop
$455Southwest
Find Deal
Tue, Nov 26 - Wed, Dec 4
3:30 pm - 5:27 pmLGA-STL
2h 57mnonstop
6:59 pm - 10:24 pmSTL-LGA
2h 25mnonstop
$461Delta
Find Deal
Sat, Nov 23 - Tue, Dec 3
9:29 pm - 11:28 pmEWR-STL
2h 59mnonstop
5:30 pm - 8:54 pmSTL-EWR
2h 24mnonstop
$531United Airlines
Find Deal
Sat, Nov 23 - Tue, Nov 26
9:10 am - 11:14 amEWR-STL
3h 04mnonstop
5:30 pm - 8:54 pmSTL-EWR
2h 24mnonstop
$539United Airlines
Find Deal
Sat, Nov 23 - Sun, Nov 24
9:44 pm - 11:31 pmMCO-STL
2h 47mnonstop
5:05 pm - 8:36 pmSTL-MCO
2h 31mnonstop
$76Frontier
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Fri, Jan 24 - Sun, Jan 26
9:44 pm - 11:27 pmMCO-STL
2h 43mnonstop
5:05 pm - 8:38 pmSTL-MCO
2h 33mnonstop
$77Frontier
Find Deal
Fri, Jan 10 - Sun, Jan 12
9:40 am - 12:48 pmDEN-STL
2h 08mnonstop
8:27 am - 10:05 amSTL-DEN
2h 38mnonstop
$197United Airlines
Find Deal
Sun, Jan 26 - Fri, Jan 31
12:00 pm - 5:56 pmSFO-STL
3h 56mnonstop
7:00 am - 9:36 amSTL-SFO
4h 36mnonstop
$207United Airlines
Find Deal
Wed, Dec 4 - Wed, Dec 11
8:04 pm - 9:53 pmDCA-STL
2h 49mnonstop
9:51 am - 12:59 pmSTL-DCA
2h 08mnonstop
$229American Airlines
Find Deal
Thu, Dec 12 - Tue, Dec 17
10:58 pm - 11:43 pmATL-STL
1h 45mnonstop
7:15 am - 9:55 amSTL-ATL
1h 40mnonstop
$241Delta
Find Deal
Wed, Dec 18 - Tue, Jan 7
10:58 pm - 11:43 pmATL-STL
1h 45mnonstop
7:15 am - 9:53 amSTL-ATL
1h 38mnonstop
$242Delta
Find Deal
Thu, Dec 12 - Mon, Dec 16
6:55 pm - 8:45 pmLGA-STL
2h 50mnonstop
6:15 am - 9:40 amSTL-LGA
2h 25mnonstop
$243Southwest
Find Deal
Tue, Dec 31 - Mon, Jan 6
6:45 pm - 9:45 pmDEN-STL
2h 00mnonstop
6:35 am - 8:00 amSTL-DEN
2h 25mnonstop
$248Southwest
Find Deal
Mon, Dec 9 - Thu, Dec 12
7:45 pm - 9:10 pmDCA-STL
2h 25mnonstop
8:53 am - 11:59 amSTL-DCA
2h 06mnonstop
$249American Airlines
Find Deal
Sat, Apr 12 - Sat, Apr 19

Frontier flights from United States to St. Louis

Our best Frontier deals on United States to St. Louis flight tickets
Frontier
Dec 14
DEN5:05 amDenver Intl
2h 08m
STL8:13 amLambert-St Louis
Dec 16
STL6:46 pmLambert-St Louis
2h 36m
DEN8:22 pmDenver Intl
Frontier
Dec 4
DEN5:05 amDenver Intl
2h 08m
STL8:13 amLambert-St Louis
Dec 11
STL6:46 pmLambert-St Louis
2h 36m
DEN8:22 pmDenver Intl
Frontier
Jan 9
MCO9:44 pmOrlando
2h 43m
STL11:27 pmLambert-St Louis
Jan 14
STL5:05 pmLambert-St Louis
2h 33m
MCO8:38 pmOrlando

Spirit Airlines flights from United States to St. Louis

Our best Spirit Airlines deals on United States to St. Louis flight tickets
Spirit Airlines
May 17
MCO5:45 amOrlando
2h 22m
STL7:07 amLambert-St Louis
May 21
STL7:57 amLambert-St Louis
2h 27m
MCO11:24 amOrlando
Spirit Airlines
Dec 14
BOS5:00 amBoston Logan Intl
11h 21m
1 stop
STL3:21 pmLambert-St Louis
Dec 17
STL4:26 pmLambert-St Louis
7h 12m
1 stop
BOS12:38 amBoston Logan Intl
Spirit Airlines
Dec 12
MCO5:02 amOrlando
11h 19m
1 stop
STL3:21 pmLambert-St Louis
Dec 15
STL4:26 pmLambert-St Louis
4h 45m
1 stop
MCO10:11 pmOrlando

See travel insights to St. Louis from

How to get the cheapest flight ticket from United States 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 United States to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $303. The month of February is another great option to travel to St. Louis, with average flight prices from United States 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 Tuesday when prices can be found for as low as $327. 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 $433. 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 United States in the evening is the least expensive time of day to depart. momondo users have found prices as low as $348 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $371 per ticket.

What is the cheapest United States to Lambert-St Louis flight route?

Fly from Dallas/Fort Worth to Lambert-St Louis for the best United States - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

The best time to book a flight to St. Louis from United States is 55 days out, which is when prices tend to be around $346. In the past 72 hours, momondo users found flights from United States to St. Louis for as low as $258.

What cabin class options are available on United States to Lambert-St Louis flights?

There are 4 cabin classes available to choose from on United States 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 United States to St. Louis flights?

You could potentially save up to 60% on your flight if you consider stops on a United States to St. Louis flight.

Cheap United States to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to St. Louis

Best Price Found

$38

Fastest flight time

1h 39m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from United States in the past 72 hours is $38. The best round-trip flight deal from United States to St. Louis found on momondo in the last 72 hours is $67.
The fastest flight from United States to St. Louis takes 1h 39m
Direct flights go from United States to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • When did momondo last update prices for flights from United States to Lambert-St Louis Airport?

    Prices for flights from United States to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from United States to Lambert-St Louis Airport?

  • How old do you have to be to fly from United States to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from United States to St. Louis?


Best airlines flying from United States to St. Louis

Compare and see reviews for airlines that fly from United States to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $44Free CancellationRating
6.1
3,536 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $62Free CancellationRating
6.3
8,169 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $157Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $176Free CancellationRating
8.0
8,755 reviews
Search Delta flights
Southern / MokulelePriceFrom $189Free CancellationRating
6.8
29 reviews
Search Southern / Mokulele flights
SouthwestPriceFrom $205Free CancellationRating
8.1
5,005 reviews
Search Southwest flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $216Free CancellationRating
8.0
9,464 reviews
Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from United States to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from United States to St. Louis for you.

Can I find flights from United States to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from United States with this policy.

How can momondo help me find flights from United States 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 United States to St. Louis.

I’m not ready to book a flight from United States to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from United States and alert you when they change.


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