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Cheap flights from Frankfurt am Main Airport to St. Louis from $405

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 Airport to St. Louis departing on 1/15. 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 Airport to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
11:50 am - 8:46 pmFRA-STL
15h 56m2 stops
KLM Logo
9:30 am - 8:40 amSTL-FRA
16h 10m1 stop
$624KLM
Find Deal
Fri, Nov 21 - Sun, Dec 7
Multiple Airlines Logo
7:20 am - 9:10 pmFRA-STL
20h 50m2 stops
Multiple Airlines Logo
2:00 pm - 2:05 pmSTL-FRA
17h 05m2 stops
$627Multiple Airlines
Find Deal
Wed, Jan 14 - Wed, Mar 4
Lufthansa Logo
10:45 am - 1:55 pmFRA-STL
10h 10mnonstop
Lufthansa Logo
1:00 pm - 6:35 amSTL-FRA
10h 35m1 stop
$636Lufthansa
Find Deal
Sun, Nov 23 - Sun, Dec 7
British Airways Logo
10:15 am - 7:30 pmFRA-STL
16h 15m1 stop
British Airways Logo
11:50 am - 10:30 amSTL-FRA
15h 40m2 stops
$637British Airways
Find Deal
Sun, Nov 23 - Sun, Dec 7
British Airways Logo
10:50 am - 6:34 pmFRA-STL
14h 44m1 stop
British Airways Logo
5:56 pm - 4:40 pmSTL-FRA
15h 44m2 stops
$638British Airways
Find Deal
Wed, Jan 14 - Wed, Mar 4
Lufthansa Logo
10:45 am - 1:55 pmFRA-STL
10h 10mnonstop
Lufthansa Logo
1:00 pm - 9:55 amSTL-FRA
13h 55m1 stop
$640Lufthansa
Find Deal
Fri, Nov 21 - Sun, Dec 7
American Airlines Logo
10:50 am - 7:29 pmFRA-STL
15h 39m1 stop
American Airlines Logo
3:43 pm - 7:40 pmSTL-FRA
20h 57m2 stops
$641American Airlines
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Sun, Nov 16 - Tue, Dec 2
American Airlines Logo
10:50 am - 1:17 pmFRA-STL
33h 27m1 stop
American Airlines Logo
11:34 am - 7:15 amSTL-FRA
12h 41m1 stop
$655American Airlines
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Fri, Nov 21 - Sun, Dec 7
United Airlines Logo
12:15 pm - 9:43 pmFRA-STL
16h 28m2 stops
United Airlines Logo
11:05 am - 9:55 amSTL-FRA
15h 50m1 stop
$673United Airlines
Find Deal
Wed, Dec 24 - Tue, Dec 30
United Airlines Logo
1:15 pm - 10:00 pmFRA-STL
15h 45m2 stops
United Airlines Logo
3:50 pm - 7:30 amSTL-FRA
8h 40mnonstop
$677United Airlines
Find Deal
Tue, Feb 17 - Sun, Mar 1

Delta flights from Frankfurt am Main Airport to St. Louis

Our best Delta deals on Frankfurt am Main Airport to St. Louis flight tickets
Delta
Feb 18
FRA10:15 amFrankfurt am Main
15h 59m
2 stops
STL7:14 pmLambert-St Louis
Mar 2
STL10:00 amLambert-St Louis
18h 15m
2 stops
FRA11:15 amFrankfurt am Main
$667
Find similar
Delta
Nov 14
FRA6:55 amFrankfurt am Main
21h 09m
2 stops
STL9:04 pmLambert-St Louis
Nov 20
STL6:40 amLambert-St Louis
18h 10m
2 stops
FRA7:50 amFrankfurt am Main
$669
Find similar
Delta
Dec 18
FRA12:00 pmFrankfurt am Main
27h 24m
2 stops
STL8:24 amLambert-St Louis
Dec 29
STL6:29 amLambert-St Louis
18h 21m
1 stop
FRA7:50 amFrankfurt am Main
$674
Find similar

United Airlines flights from Frankfurt am Main Airport to St. Louis

Our best United Airlines deals on Frankfurt am Main Airport to St. Louis flight tickets
United Airlines
Dec 24
FRA12:15 pmFrankfurt am Main
16h 28m
2 stops
STL9:43 pmLambert-St Louis
Dec 30
STL11:05 amLambert-St Louis
15h 50m
1 stop
FRA9:55 amFrankfurt am Main
$673
Find similar
United Airlines
Feb 17
FRA1:15 pmFrankfurt am Main
15h 45m
2 stops
STL10:00 pmLambert-St Louis
Mar 1
STL3:50 pmLambert-St Louis
8h 40m
FRA7:30 amFrankfurt am Main
$677
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Frankfurt am Main Airport 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 October 30, 2025.
Use the filters below to find and compare flights from Frankfurt am Main Airport 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 11/21

11:50 am-8:46 pm

2 stops15h 56m

Lambert-St Louis

Sun 12/7

9:30 am-8:40 am

1 stop16h 10m

$624

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Wed 1/14

7:20 am-9:10 pm

2 stops20h 50m

Lambert-St Louis

Wed 3/4

2:00 pm-2:05 pm

2 stops17h 05m

$627

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sun 11/23

10:45 am-1:55 pm

Nonstop10h 10m

Lambert-St Louis

Sun 12/7

1:00 pm-6:35 am

1 stop10h 35m

$636

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sun 11/23

10:15 am-7:30 pm

1 stop16h 15m

Lambert-St Louis

Sun 12/7

11:50 am-10:30 am

2 stops15h 40m

$637

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Wed 1/14

10:50 am-6:34 pm

1 stop14h 44m

Lambert-St Louis

Wed 3/4

5:56 pm-4:40 pm

2 stops15h 44m

$638

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 11/21

10:45 am-1:55 pm

Nonstop10h 10m

Lambert-St Louis

Sun 12/7

1:00 pm-9:55 am

1 stop13h 55m

$640

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sun 11/16

10:50 am-7:29 pm

1 stop15h 39m

Lambert-St Louis

Tue 12/2

3:43 pm-7:40 pm

2 stops20h 57m

$641

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 11/21

10:50 am-1:17 pm

1 stop33h 27m

Lambert-St Louis

Sun 12/7

11:34 am-7:15 am

1 stop12h 41m

$655

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Wed 12/24

12:15 pm-9:43 pm

2 stops16h 28m

Lambert-St Louis

Tue 12/30

11:05 am-9:55 am

1 stop15h 50m

$673

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Tue 2/17

1:15 pm-10:00 pm

2 stops15h 45m

Lambert-St Louis

Sun 3/1

3:50 pm-7:30 am

Nonstop8h 40m

$677

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 Airport 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 Airport 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 Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $622. The month of November is another great option to travel to St. Louis, with average flight prices from Frankfurt am Main Airport 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 Airport 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 Airport 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.

Can stopping save me money on Frankfurt am Main Airport to St. Louis flights?

You could potentially save up to 32% on your flight if you consider stops on a Frankfurt am Main Airport to St. Louis flight.

How have Frankfurt am Main Airport to St. Louis flight prices changed over time?

As of October 2025, prices for Frankfurt am Main Airport to St. Louis flights are approximately 20% more expensive when compared to flights at the same time last year.

When to book flights from Frankfurt am Main Airport to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Frankfurt am Main Airport to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Frankfurt am Main Airport to St. Louis (FRA to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Frankfurt am Main Airport 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 Airport to St. Louis takes 9h 50m
Direct flights go from Frankfurt am Main Airport 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?

    There are 4576.9 mi between Frankfurt am Main and Lambert-St Louis. Flights usually cover this in 9h 50m, depending on flying conditions and air traffic around both airports.

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

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

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

  • How old do you have to be to fly from Frankfurt am Main Airport 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 Frankfurt am Main Airport 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.

  • What is the most popular plane model from Frankfurt am Main Airport to St. Louis?

  • What is the most popular airline from Frankfurt am Main Airport to St. Louis?

Best airlines flying from Frankfurt am Main Airport to St. Louis

Compare and see reviews for airlines that fly from Frankfurt am Main Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $589Free CancellationRating
6.8
7,541 reviews
Search Lufthansa flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights

  • United Airlines Flights From Frankfurt am Main Airport to St. Louis

    Across 2 United Airlines flights from Frankfurt am Main Airport to St. Louis this week, the average price was $804, with the best United Airlines deals starting from $592 round-trip. 8,998 users have rated United Airlines on momondo, with an average score of 7.4/10.

  • Lufthansa Flights From Frankfurt am Main Airport to St. Louis

    Across 7,541 Lufthansa reviews on momondo, the average score is 6.8/10. Lufthansa flies from Frankfurt am Main Airport to St. Louis about 2 times each week, with ticket deals ranging from $589 to $952. Price data is based on momondo searches in the last 72 hours.

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
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?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Frankfurt am Main to St. Louis. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Frankfurt am Main with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Frankfurt am Main.

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

Yes momondo offers price alerts on flights to St. Louis from Frankfurt am Main. 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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