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Cheap flights from St. Louis to Frankfurt am Main from $338

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 Frankfurt am Main departing on 10/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Frankfurt am Main

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 am - 5:45 amSTL  Lambert-St Louis-FRA Frankfurt am Main
15h 45m1 stop Boston Logan Intl
Multiple Airlines Logo
12:30 pm - 7:45 pmFRA  Frankfurt am Main-STL Lambert-St Louis
14h 15m1 stop Boston Logan Intl
$764Multiple Airlines
Mon, Aug 31 - Fri, Sep 11
Multiple Airlines Logo
7:00 am - 5:45 amSTL  Lambert-St Louis-FRA Frankfurt am Main
15h 45m1 stop Boston Logan Intl
Multiple Airlines Logo
12:30 pm - 7:45 pmFRA  Frankfurt am Main-STL Lambert-St Louis
14h 15m1 stop Boston Logan Intl
$786Multiple Airlines
Mon, Sep 7 - Thu, Sep 10
Multiple Airlines Logo
7:00 am - 5:45 amSTL  Lambert-St Louis-FRA Frankfurt am Main
15h 45m1 stop Boston Logan Intl
Multiple Airlines Logo
12:30 pm - 7:45 pmFRA  Frankfurt am Main-STL Lambert-St Louis
14h 15m1 stop Boston Logan Intl
$800Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
Lufthansa Logo
3:40 pm - 7:30 amSTL  Lambert-St Louis-FRA Frankfurt am Main
8h 50mnonstop
Lufthansa Logo
10:45 am - 1:45 pmFRA  Frankfurt am Main-STL Lambert-St Louis
10h 00mnonstop
$844Lufthansa
Sun, Dec 6 - Wed, Dec 16
Lufthansa Logo
3:40 pm - 7:30 amSTL  Lambert-St Louis-FRA Frankfurt am Main
8h 50mnonstop
Lufthansa Logo
10:45 am - 1:45 pmFRA  Frankfurt am Main-STL Lambert-St Louis
10h 00mnonstop
$846Lufthansa
Wed, Jan 13 - Wed, Jan 20
Lufthansa Logo
7:04 pm - 1:45 pmSTL  Lambert-St Louis-FRA Frankfurt am Main
11h 41m1 stop Chicago O'Hare Intl
Lufthansa Logo
10:45 am - 1:45 pmFRA  Frankfurt am Main-STL Lambert-St Louis
10h 00mnonstop
$850Lufthansa
Wed, Jan 13 - Wed, Jan 20
British Airways Logo
12:01 pm - 10:25 amSTL  Lambert-St Louis-FRA Frankfurt am Main
15h 24m2 stops Boston Logan Intl London Heathrow
British Airways Logo
10:15 am - 7:41 pmFRA  Frankfurt am Main-STL Lambert-St Louis
16h 26m1 stop Dallas/Fort Worth
$856British Airways
Tue, Jan 12 - Tue, Jan 19
British Airways Logo
5:27 pm - 4:40 pmSTL  Lambert-St Louis-FRA Frankfurt am Main
16h 13m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
10:15 am - 7:41 pmFRA  Frankfurt am Main-STL Lambert-St Louis
16h 26m1 stop Dallas/Fort Worth
$856British Airways
Wed, Jan 13 - Wed, Jan 20
United Airlines Logo
6:30 am - 7:25 amSTL  Lambert-St Louis-FRA Frankfurt am Main
17h 55m2 stops Newark Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
9:45 am - 11:09 amFRA  Frankfurt am Main-STL Lambert-St Louis
32h 24m2 stops Montreal Pierre Elliott Trudeau Intl Newark
$864United Airlines
Tue, Jan 12 - Tue, Jan 19
United Airlines Logo
3:15 pm - 9:35 amSTL  Lambert-St Louis-FRA Frankfurt am Main
11h 20m1 stop Chicago O'Hare Intl
United Airlines Logo
9:45 am - 12:40 pmFRA  Frankfurt am Main-STL Lambert-St Louis
33h 55m2 stops Montreal Pierre Elliott Trudeau Intl Newark
$865United Airlines
Tue, Jan 12 - Tue, Jan 19

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Lufthansa flights from St. Louis to Frankfurt am Main Airport

Our best Lufthansa deals on St. Louis to Frankfurt am Main Airport flight tickets
Lufthansa
Dec 6
STL3:40 pmLambert-St Louis
8h 50m
FRA7:30 amFrankfurt am Main
Dec 16
FRA10:45 amFrankfurt am Main
10h 00m
STL1:45 pmLambert-St Louis
$844
Lufthansa
Jan 13
STL3:40 pmLambert-St Louis
8h 50m
FRA7:30 amFrankfurt am Main
Jan 20
FRA10:45 amFrankfurt am Main
10h 00m
STL1:45 pmLambert-St Louis
$846
Lufthansa
Jan 13
STL7:04 pmLambert-St Louis
11h 41m
1 stop
FRA1:45 pmFrankfurt am Main
Jan 20
FRA10:45 amFrankfurt am Main
10h 00m
STL1:45 pmLambert-St Louis
$850

Aer Lingus flights from St. Louis to Frankfurt am Main Airport

Our best Aer Lingus deals on St. Louis to Frankfurt am Main Airport flight tickets
Aer Lingus
Aug 18
STL6:00 amLambert-St Louis
30h 55m
2 stops
FRA7:55 pmFrankfurt am Main
Aug 25
FRA10:55 amFrankfurt am Main
19h 39m
2 stops
STL11:34 pmLambert-St Louis
$1,215
Aer Lingus
Aug 25
STL6:00 amLambert-St Louis
21h 15m
2 stops
FRA10:15 amFrankfurt am Main
Sep 8
FRA10:55 amFrankfurt am Main
19h 39m
2 stops
STL11:34 pmLambert-St Louis
$1,219
Aer Lingus
Aug 18
STL6:00 amLambert-St Louis
30h 55m
2 stops
FRA7:55 pmFrankfurt am Main
Sep 15
FRA10:55 amFrankfurt am Main
40h 49m
2 stops
STL8:44 pmLambert-St Louis
$1,228

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Frankfurt am Main Airport 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 August 11, 2026.
Use the filters below to find and compare flights from St. Louis to Frankfurt am Main Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisFrankfurt am Main

STL Lambert-St Louis - FRA Frankfurt am Main

STLFRA

Lambert-St Louis

Mon 8/31

7:00 am-5:45 am

1 stop15h 45m

Frankfurt am Main

Fri 9/11

12:30 pm-7:45 pm

1 stop14h 15m

$764

St. LouisFrankfurt am Main

STL Lambert-St Louis - FRA Frankfurt am Main

STLFRA

Lambert-St Louis

Mon 9/7

7:00 am-5:45 am

1 stop15h 45m

Frankfurt am Main

Thu 9/10

12:30 pm-7:45 pm

1 stop14h 15m

$786

St. LouisFrankfurt am Main

STL Lambert-St Louis - FRA Frankfurt am Main

STLFRA

Lambert-St Louis

Mon 8/24

7:00 am-5:45 am

1 stop15h 45m

Frankfurt am Main

Mon 8/31

12:30 pm-7:45 pm

1 stop14h 15m

$800
Quickest round-trip

St. LouisFrankfurt am Main

STL Lambert-St Louis - FRA Frankfurt am Main

STLFRA

Lambert-St Louis

Sun 12/6

3:40 pm-7:30 am

Nonstop8h 50m

Frankfurt am Main

Wed 12/16

10:45 am-1:45 pm

Nonstop10h 00m

$844

St. LouisFrankfurt am Main

STL Lambert-St Louis - FRA Frankfurt am Main

STLFRA

Lambert-St Louis

Wed 1/13

3:40 pm-7:30 am

Nonstop8h 50m

Frankfurt am Main

Wed 1/20

10:45 am-1:45 pm

Nonstop10h 00m

$846

St. LouisFrankfurt am Main

STL Lambert-St Louis - FRA Frankfurt am Main

STLFRA

Lambert-St Louis

Wed 1/13

7:04 pm-1:45 pm

1 stop11h 41m

Frankfurt am Main

Wed 1/20

10:45 am-1:45 pm

Nonstop10h 00m

$850

St. LouisFrankfurt am Main

STL Lambert-St Louis - FRA Frankfurt am Main

STLFRA

Lambert-St Louis

Tue 1/12

12:01 pm-10:25 am

2 stops15h 24m

Frankfurt am Main

Tue 1/19

10:15 am-7:41 pm

1 stop16h 26m

$856

St. LouisFrankfurt am Main

STL Lambert-St Louis - FRA Frankfurt am Main

STLFRA

Lambert-St Louis

Wed 1/13

5:27 pm-4:40 pm

2 stops16h 13m

Frankfurt am Main

Wed 1/20

10:15 am-7:41 pm

1 stop16h 26m

$856

St. LouisFrankfurt am Main

STL Lambert-St Louis - FRA Frankfurt am Main

STLFRA

Lambert-St Louis

Tue 1/12

6:30 am-7:25 am

2 stops17h 55m

Frankfurt am Main

Tue 1/19

9:45 am-11:09 am

2 stops32h 24m

$864

St. LouisFrankfurt am Main

STL Lambert-St Louis - FRA Frankfurt am Main

STLFRA

Lambert-St Louis

Tue 1/12

3:15 pm-9:35 am

1 stop11h 20m

Frankfurt am Main

Tue 1/19

9:45 am-12:40 pm

2 stops33h 55m

$865

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 Frankfurt am Main from

How to get the cheapest flight ticket from St. Louis to Frankfurt am Main Airport

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 St. Louis and Frankfurt am Main Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $1,181 to $1,489.
The lowest price recently found on this route was $786.

What is the cheapest month to fly to Frankfurt am Main Airport?

In general, March is the cheapest month to fly from St. Louis to Frankfurt am Main Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $929. If you aren’t able to travel to Frankfurt am Main Airport during the month of March, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $1,074.

What is the cheapest day to depart on your flight to Frankfurt am Main Airport?

On average, the least expensive day to fly to Frankfurt am Main Airport from St. Louis is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,061. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from St. Louis to Frankfurt am Main Airport on a Saturday will generally be more expensive and average around $1,197. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Lambert-St Louis to Frankfurt am Main flight route?

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

How far in advance should I book a flight from St. Louis to Frankfurt am Main Airport?

You are more likely to see cheaper flights to Frankfurt am Main Airport from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Frankfurt am Main Airport for around $1,246 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Frankfurt am Main Airport from St. Louis for as low as $859 on momondo.

What cabin class options are available on St. Louis to Frankfurt am Main Airport flights?

There are 3 cabin classes available to choose from on St. Louis to Frankfurt am Main Airport 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 Frankfurt am Main Airport flights?

You could potentially save up to 30% on your flight if you consider stops on a St. Louis to Frankfurt am Main Airport flight.

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

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

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

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

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

Best Price Found

$600

Fastest flight time

8h 50m

Direct flights

Mon, Tue, Thu and Sat
The best one-way flight to Frankfurt am Main Airport from St. Louis in the past 72 hours is $600. The best round-trip flight deal from St. Louis to Frankfurt am Main Airport found on momondo in the last 72 hours is $989.
The fastest flight from St. Louis to Frankfurt am Main Airport takes 8h 50m
Direct flights go from St. Louis to Frankfurt am Main Airport on Monday, Tuesday, Thursday and Saturday. There are no airlines offering direct flights.
Search flight deals

Frequently asked questions about flying from St. Louis to Frankfurt am Main Airport

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

    There are 4576.9 mi between Lambert-St Louis and Frankfurt am Main. In terms of flight time, this usually takes a little over 8h 50m.

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

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

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

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

  • What documentation or ID do you need to fly to Frankfurt am Main Airport?

    The travel and health documents you'll need for your trip to Frankfurt am Main Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Frankfurt am Main Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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

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

Compare and see reviews for airlines that fly from St. Louis to Frankfurt am Main Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $410Free CancellationRating
6.7
8,159 reviews
Search British Airways flights
United AirlinesPriceFrom $693Free CancellationRating
7.4
10,111 reviews
Search United Airlines flights
LufthansaPriceFrom $852Free CancellationRating
6.8
8,179 reviews
Search Lufthansa flights

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

    United Airlines flies from St. Louis to Frankfurt am Main Airport around 5 times per week, with 10,104 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from St. Louis to Frankfurt am Main Airport in the last 72 hours was $693 (round-trip), much lower than the average airfare cost of $1,417 for United Airlines flights on this route.

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

    Another popular option for St. Louis to Frankfurt am Main Airport flights is Lufthansa (6.8/10, 8,180 ratings). Lufthansa flies from St. Louis to Frankfurt am Main Airport around 5 times per week, with deals starting from $852 round-trip and rising to an average price of around $1,318.

Traveling to a place near Frankfurt am Main?

Book flights to Frankfurt am Main if you plan to visit one of these locations
Heidelberg
Baden-Baden
Wurzburg
Koblenz
Mainz
Darmstadt
Rothenburg ob der Tauber
Nuerburg
Kaiserslautern
Aschaffenburg
Trier
Cochem
Wiesbaden
Ludwigsburg
Fulda
Rüdesheim am Rhein
Marburg
Hofheim
Heilbronn
Schwäbisch Hall

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Frankfurt am Main?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Frankfurt am Main. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Frankfurt am Main from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between St. Louis and Frankfurt am Main by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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

An easier way to manage your Frankfurt am Main Airport trip

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