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Cheap flights from St. Louis to the United States from $33

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to the United States departing on 11/12. 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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Cheap round-trip flights

Frontier Logo
2:52 pm - 5:46 pmSTL-ATL
1h 54mnonstop
Frontier Logo
12:43 pm - 1:34 pmATL-STL
1h 51mnonstop
$82Frontier
Find Deal
Sat, Jul 12 - Thu, Aug 14
Frontier Logo
2:36 pm - 5:30 pmSTL-ATL
1h 54mnonstop
Frontier Logo
12:43 pm - 1:34 pmATL-STL
1h 51mnonstop
$83Frontier
Find Deal
Thu, Jul 17 - Sun, Jul 20
United Airlines Logo
5:00 am - 6:30 amSTL-ORD
1h 30mnonstop
United Airlines Logo
2:23 pm - 3:47 pmORD-STL
1h 24mnonstop
$91United Airlines
Find Deal
Wed, Aug 13 - Sat, Aug 16
American Airlines Logo
8:01 pm - 9:24 pmSTL-ORD
1h 23mnonstop
American Airlines Logo
8:45 pm - 10:17 pmORD-STL
1h 32mnonstop
$92American Airlines
Find Deal
Tue, Aug 12 - Tue, Aug 19
United Airlines Logo
8:00 am - 9:25 amSTL-ORD
1h 25mnonstop
United Airlines Logo
2:23 pm - 3:47 pmORD-STL
1h 24mnonstop
$94United Airlines
Find Deal
Thu, Aug 7 - Wed, Aug 13
American Airlines Logo
6:00 am - 7:24 amSTL-ORD
1h 24mnonstop
American Airlines Logo
10:34 pm - 11:51 pmORD-STL
1h 17mnonstop
$97American Airlines
Find Deal
Mon, Aug 4 - Thu, Aug 7
Southwest Logo
2:25 pm - 9:30 pmSTL-ORD
7h 05m1 stop
Southwest Logo
2:55 pm - 8:30 pmORD-STL
5h 35m1 stop
$111Southwest
Find Deal
Wed, Aug 13 - Sat, Aug 16
Southwest Logo
4:35 pm - 9:30 pmSTL-ORD
4h 55m1 stop
Southwest Logo
7:00 am - 12:30 pmORD-STL
5h 30m1 stop
$114Southwest
Find Deal
Wed, Aug 13 - Thu, Aug 14
Delta Logo
6:00 am - 8:38 amSTL-ATL
1h 38mnonstop
Delta Logo
9:04 am - 9:41 amATL-STL
1h 37mnonstop
$137Delta
Find Deal
Mon, Aug 4 - Thu, Aug 7
Delta Logo
7:20 am - 10:00 amSTL-ATL
1h 40mnonstop
Delta Logo
11:45 am - 12:25 pmATL-STL
1h 40mnonstop
$168Delta
Find Deal
Thu, Oct 9 - Sat, Oct 11

Spirit Airlines flights from St. Louis to United States

Our best Spirit Airlines deals on St. Louis to United States flight tickets
Spirit Airlines
Sep 18
STL2:30 pmLambert-St Louis
6h 48m
1 stop
LGA10:18 pmNew York LaGuardia
Sep 25
LGA6:35 amNew York LaGuardia
8h 00m
1 stop
STL1:35 pmLambert-St Louis
Spirit Airlines
Jul 26
STL10:45 amLambert-St Louis
2h 27m
MCO2:12 pmOrlando
Aug 2
MCO8:10 amOrlando
2h 30m
STL9:40 amLambert-St Louis
Spirit Airlines
Aug 22
STL2:30 pmLambert-St Louis
7h 04m
1 stop
BOS10:34 pmBoston Logan Intl
Aug 24
BOS6:30 amBoston Logan Intl
8h 02m
1 stop
STL1:32 pmLambert-St Louis

Frontier flights from St. Louis to United States

Our best Frontier deals on St. Louis to United States flight tickets
Frontier
Jul 12
STL2:52 pmLambert-St Louis
1h 54m
ATL5:46 pmAtlanta Hartsfield-Jackson
Aug 14
ATL12:43 pmAtlanta Hartsfield-Jackson
1h 51m
STL1:34 pmLambert-St Louis
Frontier
Jul 17
STL2:36 pmLambert-St Louis
1h 54m
ATL5:30 pmAtlanta Hartsfield-Jackson
Jul 20
ATL12:43 pmAtlanta Hartsfield-Jackson
1h 51m
STL1:34 pmLambert-St Louis
Frontier
Jul 10
STL2:36 pmLambert-St Louis
1h 54m
ATL5:30 pmAtlanta Hartsfield-Jackson
Jul 13
ATL12:43 pmAtlanta Hartsfield-Jackson
1h 51m
STL1:34 pmLambert-St Louis

See travel insights to the United States from

How to get the cheapest flight ticket from St. Louis to United States

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 United States?

In general, April is the cheapest month to fly from St. Louis to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $263. If you aren’t able to travel during the month of April, then book flights to United States from St. Louis during September instead. Flights to United States in September, while not as cheap as those in April, still average around $269.

What is the cheapest day to depart on your flight to United States?

According to our data, Thursday is the cheapest day to fly to United States from St. Louis. The lowest ticket price found for a Thursday departure recently was $347. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $406. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

What is the cheapest time of day to depart on your flight to United States?

The cheapest time of day to fly to United States is at noon when flights can be purchased for as low as $307. Try not to purchase tickets in the afternoon because they tend to be around $402. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Fly from Lambert-St Louis to Denver Intl for the best Lambert-St Louis - United States flight prices

How far in advance should I book a flight to United States?

You are more likely to see cheaper flights to United States from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $341 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from St. Louis for as low as $256 on momondo.

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

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

No. A direct flight is the cheapest option for a flight between St. Louis to United States.

Cheap St. Louis to United States flight deals and tips

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

Best Price Found

$33

Fastest flight time

1h 23m

Direct flights

Every day

Airports in United States

6 airports
The best one-way flight to United States from St. Louis in the past 72 hours is $33. The best round-trip flight deal from St. Louis to United States found on momondo in the last 72 hours is $82.
The fastest flight from St. Louis to United States takes 1h 23m
Direct flights go from St. Louis to United States every day.
There are 6 airports near United States: Chicago O'Hare Intl (ORD), New York LaGuardia (LGA), Orlando (MCO), Atlanta Hartsfield-Jackson (ATL), Denver Intl (DEN), Las Vegas Harry Reid Intl (LAS)

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

    Prices for flights from Lambert-St Louis Airport to United States refresh daily.

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

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

    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 Lambert-St Louis Airport to United States.

  • What documentation or ID do you need to fly to United States?

    The required travel and health documents for your United States trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United States. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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


Best airlines flying from St. Louis to United States

Compare and see reviews for airlines that fly from St. Louis to United States with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $45Free CancellationRating
5.9
3,293 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $56Free CancellationRating
6.3
8,096 reviews
Search Spirit Airlines flights
DeltaPriceFrom $94Free CancellationRating
8.0
7,969 reviews
Search Delta flights
Allegiant AirPriceFrom $104Free CancellationRating
7.2
710 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $153Free CancellationRating
7.4
8,852 reviews
Search United Airlines flights
SouthwestPriceFrom $179Free CancellationRating
8.0
4,278 reviews
Search Southwest flights
Southern / MokulelePriceFrom $193Free CancellationRating
6.4
26 reviews
Search Southern / Mokulele flights
American AirlinesPriceFrom $196Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $236Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $238Free CancellationRating
7.8
2,533 reviews
Search Hawaiian Airlines flights

Why use momondo?

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

Finding the right flight to United States from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to United States quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for St. Louis to United States flights to just show those with flexible booking policies.

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

Once you have performed a search for St. Louis to United States flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to United States from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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Sat 7/5
Sat 7/12

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Popular flights according to clicks in the last 7 days on momondo