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Cheap flights from Frankfurt am Main to St. Louis from $426

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Frankfurt am Main to St. Louis departing on 3/20. 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

Enter your travel dates to find the best prices.
Lufthansa Logo
10:45 am - 1:55 pmFRA-STL
10h 10mnonstop
Lufthansa Logo
6:35 pm - 2:00 pmSTL-FRA
12h 25m1 stop
$640Lufthansa
Find Deal
Wed, Dec 24 - Sun, Jan 4
Multiple Airlines Logo
8:20 am - 5:54 pmFRA-STL
16h 34m2 stops
Multiple Airlines Logo
6:35 pm - 2:00 pmSTL-FRA
12h 25m1 stop
$641Multiple Airlines
Find Deal
Wed, Dec 24 - Sun, Jan 4
American Airlines Logo
10:50 am - 12:05 amFRA-STL
20h 15m1 stop
American Airlines Logo
5:58 pm - 9:55 pmSTL-FRA
20h 57m2 stops
$659American Airlines
Find Deal
Fri, Nov 28 - Mon, Dec 8
Delta Logo
10:15 am - 8:07 amFRA-STL
28h 52m2 stops
Delta Logo
1:35 pm - 11:15 amSTL-FRA
14h 40m2 stops
$660Delta
Find Deal
Fri, Nov 28 - Sat, Dec 6
Delta Logo
6:55 am - 8:41 pmFRA-STL
20h 46m2 stops
Delta Logo
5:59 pm - 4:45 pmSTL-FRA
15h 46m2 stops
$661Delta
Find Deal
Wed, Dec 24 - Tue, Dec 30
United Airlines Logo
10:45 am - 1:55 pmFRA-STL
10h 10mnonstop
United Airlines Logo
11:20 am - 9:55 amSTL-FRA
15h 35m1 stop
$667United Airlines
Find Deal
Fri, Dec 26 - Fri, Jan 9
United Airlines Logo
10:45 am - 1:55 pmFRA-STL
10h 10mnonstop
United Airlines Logo
3:50 pm - 7:30 amSTL-FRA
8h 40mnonstop
$668United Airlines
Find Deal
Fri, Dec 26 - Fri, Jan 9
Air Canada Logo
10:15 am - 3:29 pmFRA-STL
36h 14m2 stops
Air Canada Logo
8:00 am - 7:25 amSTL-FRA
16h 25m2 stops
$669Air Canada
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Thu, Nov 27 - Sat, Dec 6
Air Canada Logo
10:05 am - 4:27 pmFRA-STL
37h 22m2 stops
Air Canada Logo
4:05 pm - 6:40 amSTL-FRA
31h 35m1 stop
$670Air Canada
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Fri, Dec 26 - Fri, Jan 9
American Airlines Logo
10:50 am - 12:05 amFRA-STL
20h 15m1 stop
American Airlines Logo
6:00 am - 8:50 amSTL-FRA
19h 50m2 stops
$730American Airlines
Find Deal
Mon, Dec 1 - Sun, Dec 7

Lufthansa flights from Frankfurt am Main to St. Louis

Our best Lufthansa deals on Frankfurt am Main to St. Louis flight tickets
Lufthansa
Dec 24
FRA10:45 amFrankfurt am Main
10h 10m
STL1:55 pmLambert-St Louis
Jan 4
STL6:35 pmLambert-St Louis
12h 25m
1 stop
FRA2:00 pmFrankfurt am Main
$640
Find similar
Lufthansa
Dec 24
FRA12:50 pmFrankfurt am Main
15h 53m
1 stop
STL9:43 pmLambert-St Louis
Jan 4
STL6:35 pmLambert-St Louis
12h 25m
1 stop
FRA2:00 pmFrankfurt am Main
$645
Find similar
Lufthansa
Dec 26
FRA10:45 amFrankfurt am Main
10h 10m
STL1:55 pmLambert-St Louis
Jan 9
STL3:50 pmLambert-St Louis
8h 40m
FRA7:30 amFrankfurt am Main
$647
Find similar

United Airlines flights from Frankfurt am Main to St. Louis

Our best United Airlines deals on Frankfurt am Main to St. Louis flight tickets
United Airlines
Dec 26
FRA10:45 amFrankfurt am Main
10h 10m
STL1:55 pmLambert-St Louis
Jan 9
STL11:20 amLambert-St Louis
15h 35m
1 stop
FRA9:55 amFrankfurt am Main
$667
Find similar
United Airlines
Dec 26
FRA10:45 amFrankfurt am Main
10h 10m
STL1:55 pmLambert-St Louis
Jan 9
STL3:50 pmLambert-St Louis
8h 40m
FRA7:30 amFrankfurt am Main
$668
Find similar
United Airlines
Dec 24
FRA12:15 pmFrankfurt am Main
16h 28m
2 stops
STL9:43 pmLambert-St Louis
Jan 3
STL6:35 pmLambert-St Louis
29h 00m
1 stop
FRA6:35 amFrankfurt am Main
$725
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Frankfurt am Main 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 November 3, 2025.
Use the filters below to find and compare flights from Frankfurt am Main to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Wed 12/24

10:45 am-1:55 pm

Nonstop10h 10m

Lambert-St Louis

Sun 1/4

6:35 pm-2:00 pm

1 stop12h 25m

$640

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Wed 12/24

8:20 am-5:54 pm

2 stops16h 34m

Lambert-St Louis

Sun 1/4

6:35 pm-2:00 pm

1 stop12h 25m

$641

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 11/28

10:50 am-12:05 am

1 stop20h 15m

Lambert-St Louis

Mon 12/8

5:58 pm-9:55 pm

2 stops20h 57m

$659

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 11/28

10:15 am-8:07 am

2 stops28h 52m

Lambert-St Louis

Sat 12/6

1:35 pm-11:15 am

2 stops14h 40m

$660

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Wed 12/24

6:55 am-8:41 pm

2 stops20h 46m

Lambert-St Louis

Tue 12/30

5:59 pm-4:45 pm

2 stops15h 46m

$661

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 12/26

10:45 am-1:55 pm

Nonstop10h 10m

Lambert-St Louis

Fri 1/9

11:20 am-9:55 am

1 stop15h 35m

$667

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 12/26

10:45 am-1:55 pm

Nonstop10h 10m

Lambert-St Louis

Fri 1/9

3:50 pm-7:30 am

Nonstop8h 40m

$668

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Thu 11/27

10:15 am-3:29 pm

2 stops36h 14m

Lambert-St Louis

Sat 12/6

8:00 am-7:25 am

2 stops16h 25m

$669

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 12/26

10:05 am-4:27 pm

2 stops37h 22m

Lambert-St Louis

Fri 1/9

4:05 pm-6:40 am

1 stop31h 35m

$670

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Mon 12/1

10:50 am-12:05 am

1 stop20h 15m

Lambert-St Louis

Sun 12/7

6:00 am-8:50 am

2 stops19h 50m

$730

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 Frankfurt am Main 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 typical price of a round-trip flight between Frankfurt am Main and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, April is the cheapest month to fly from Frankfurt am Main to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $626. The month of November is another great option to travel to St. Louis, with average flight prices from Frankfurt am Main averaging around $635.

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 $622. 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 Friday because tickets tend to average around $1,012. 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 Frankfurt am Main to Lambert-St Louis flight route?

Fly from Frankfurt am Main to Lambert-St Louis for the best Frankfurt am Main - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from Frankfurt am Main when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $751 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Frankfurt am Main for as low as $629 on momondo.

What cabin class options are available on Frankfurt am Main to Lambert-St Louis flights?

There are 3 cabin classes available to choose from on Frankfurt am Main 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.

Cheap Frankfurt am Main to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Frankfurt am Main to St. Louis

Fastest flight time

9h 50m

Direct flights

Mon, Thu and Sat

Airports in St. Louis

1 airport
The fastest flight from Frankfurt am Main to St. Louis takes 9h 50m
Direct flights go from Frankfurt am Main to St. Louis on Monday, Thursday and Saturday. There are no airlines offering direct flights.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • How far is Frankfurt am Main to Lambert-St Louis by plane?

    Lambert-St Louis is 4579.0 mi away from Frankfurt am Main. Typically, this will take 10h 10m by plane in normal conditions.

  • When did momondo last update prices for flights from Frankfurt am Main to Lambert-St Louis Airport?

    Prices for flights from Frankfurt am Main to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Frankfurt am Main to Lambert-St Louis Airport?

  • How old do you have to be to fly from Frankfurt am Main to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Frankfurt am Main to Lambert-St Louis Airport.

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

    The required travel and health documents for your Lambert-St Louis Airport 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 Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Frankfurt am Main to St. Louis

Compare and see reviews for airlines that fly from Frankfurt am Main to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $589Free CancellationRating
6.8
7,545 reviews
Search Lufthansa flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
8,997 reviews
Search United 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 Frankfurt am Main to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Frankfurt am Main.

Can I find flights from Frankfurt am Main to St. Louis with flexible booking policies on momondo?

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

How can momondo help me find flights from Frankfurt am Main to St. Louis?

Once you have performed a search for Frankfurt am Main to St. Louis 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 Frankfurt am Main to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Frankfurt am Main 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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