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Cheap flights from Frankfurt am Main to St. Louis from $424

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 9/3. 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 Frankfurt am Main to St. Louis

Cheap round-trip flights

Air Canada Logo
9:55 am - 7:57 pmFRA-STL
17h 02m1 stop
Air Canada Logo
1:30 pm - 8:10 amSTL-FRA
11h 40m1 stop
$555Air Canada
Find Deal
Fri, Sep 19 - Fri, Oct 3
United Airlines Logo
10:40 am - 1:30 pmFRA-STL
9h 50mnonstop
United Airlines Logo
12:25 pm - 9:55 amSTL-FRA
14h 30m1 stop
$562United Airlines
Find Deal
Fri, Sep 19 - Fri, Oct 3
Lufthansa Logo
10:40 am - 1:30 pmFRA-STL
9h 50mnonstop
Lufthansa Logo
3:30 pm - 7:25 amSTL-FRA
8h 55mnonstop
$570Lufthansa
Find Deal
Fri, Sep 19 - Fri, Oct 3
Logo
5:25 pm - 5:39 pmFRA-STL
31h 14m1 stop
Logo
4:05 pm - 6:40 amSTL-FRA
31h 35m1 stop
$571
Find Deal
Thu, Nov 27 - Sat, Dec 27
American Airlines Logo
10:15 am - 10:29 pmFRA-STL
19h 14m1 stop
American Airlines Logo
4:41 pm - 6:10 pmSTL-FRA
18h 29m2 stops
$577American Airlines
Find Deal
Mon, Nov 24 - Mon, Dec 29
Lufthansa Logo
10:40 am - 1:30 pmFRA-STL
9h 50mnonstop
Lufthansa Logo
12:25 pm - 6:30 amSTL-FRA
11h 05m1 stop
$582Lufthansa
Find Deal
Fri, Sep 19 - Fri, Oct 3
British Airways Logo
6:40 am - 8:15 pmFRA-STL
20h 35m2 stops
British Airways Logo
5:25 pm - 6:50 pmSTL-FRA
18h 25m2 stops
$589British Airways
Find Deal
Sat, Sep 13 - Sat, Sep 20
Logo
9:20 am - 8:47 pmFRA-STL
18h 27m2 stops
Logo
1:43 pm - 2:05 pmSTL-FRA
17h 22m2 stops
$611
Find Deal
Wed, Aug 13 - Wed, Nov 12
American Airlines Logo
9:20 am - 4:56 pmFRA-STL
14h 36m1 stop
American Airlines Logo
6:04 pm - 4:40 pmSTL-FRA
15h 36m2 stops
$641American Airlines
Find Deal
Wed, Aug 13 - Wed, Nov 12
British Airways Logo
10:40 am - 8:32 pmFRA-STL
16h 52m2 stops
British Airways Logo
5:00 pm - 6:15 pmSTL-FRA
18h 15m2 stops
$646British Airways
Find Deal
Fri, Sep 19 - Fri, Oct 3

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
Sep 19
FRA10:40 amFrankfurt am Main
9h 50m
STL1:30 pmLambert-St Louis
Oct 3
STL12:25 pmLambert-St Louis
14h 30m
1 stop
FRA9:55 amFrankfurt am Main
$562
Find similar
United Airlines
Sep 19
FRA10:40 amFrankfurt am Main
9h 50m
STL1:30 pmLambert-St Louis
Oct 3
STL3:30 pmLambert-St Louis
8h 55m
FRA7:25 amFrankfurt am Main
$581
Find similar
United Airlines
Nov 26
FRA9:50 amFrankfurt am Main
19h 55m
2 stops
STL10:45 pmLambert-St Louis
Dec 24
STL1:00 pmLambert-St Louis
11h 40m
1 stop
FRA7:40 amFrankfurt am Main
$584
Find similar

Air Canada flights from Frankfurt am Main to St. Louis

Our best Air Canada deals on Frankfurt am Main to St. Louis flight tickets
Air Canada
Sep 19
FRA9:55 amFrankfurt am Main
17h 02m
1 stop
STL7:57 pmLambert-St Louis
Oct 3
STL1:30 pmLambert-St Louis
11h 40m
1 stop
FRA8:10 amFrankfurt am Main
$555
Find similar
Air Canada
Sep 19
FRA2:20 pmFrankfurt am Main
12h 37m
1 stop
STL7:57 pmLambert-St Louis
Oct 3
STL1:30 pmLambert-St Louis
11h 40m
1 stop
FRA8:10 amFrankfurt am Main
$572
Find similar
Air Canada
Sep 19
FRA9:55 amFrankfurt am Main
17h 02m
1 stop
STL7:57 pmLambert-St Louis
Oct 3
STL1:30 pmLambert-St Louis
11h 40m
1 stop
FRA8:10 amFrankfurt am Main
$574
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 July 31, 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

Fri 9/19

9:55 am-7:57 pm

1 stop17h 02m

Lambert-St Louis

Fri 10/3

1:30 pm-8:10 am

1 stop11h 40m

$555

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 9/19

10:40 am-1:30 pm

Nonstop9h 50m

Lambert-St Louis

Fri 10/3

12:25 pm-9:55 am

1 stop14h 30m

$562

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 9/19

10:40 am-1:30 pm

Nonstop9h 50m

Lambert-St Louis

Fri 10/3

3:30 pm-7:25 am

Nonstop8h 55m

$570

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Thu 11/27

5:25 pm-5:39 pm

1 stop31h 14m

Lambert-St Louis

Sat 12/27

4:05 pm-6:40 am

1 stop31h 35m

$571

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Mon 11/24

10:15 am-10:29 pm

1 stop19h 14m

Lambert-St Louis

Mon 12/29

4:41 pm-6:10 pm

2 stops18h 29m

$577

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 9/19

10:40 am-1:30 pm

Nonstop9h 50m

Lambert-St Louis

Fri 10/3

12:25 pm-6:30 am

1 stop11h 05m

$582

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sat 9/13

6:40 am-8:15 pm

2 stops20h 35m

Lambert-St Louis

Sat 9/20

5:25 pm-6:50 pm

2 stops18h 25m

$589

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Wed 8/13

9:20 am-8:47 pm

2 stops18h 27m

Lambert-St Louis

Wed 11/12

1:43 pm-2:05 pm

2 stops17h 22m

$611

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Wed 8/13

9:20 am-4:56 pm

1 stop14h 36m

Lambert-St Louis

Wed 11/12

6:04 pm-4:40 pm

2 stops15h 36m

$641

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 9/19

10:40 am-8:32 pm

2 stops16h 52m

Lambert-St Louis

Fri 10/3

5:00 pm-6:15 pm

2 stops18h 15m

$646

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 cheapest month to fly to St. Louis?

In general, November 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 $613. The month of April is another great option to travel to St. Louis, with average flight prices from Frankfurt am Main averaging around $622.

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 $735 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 $619 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

Best Price Found

$424

Fastest flight time

9h 50m

Direct flights

Mon, Thu and Sat

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Frankfurt am Main in the past 72 hours is $424. The best round-trip flight deal from Frankfurt am Main to St. Louis found on momondo in the last 72 hours is $555.
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. Airlines offering direct flights are: United Airlines and Lufthansa.
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 9h 50m 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
American AirlinesPriceFrom $557Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
LufthansaPriceFrom $584Free CancellationRating
6.8
7,275 reviews
Search Lufthansa flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
8,900 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
Maryland Heights
Florissant
Fenton
Collinsville
O'Fallon
Alton
St. Peters
Farmington
Wentzville
Festus
Glencoe
Eureka
Edwardsville
Clayton
Shrewsbury
Grafton

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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