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Cheap flights from Frankfurt am Main Airport to St. Louis from $441

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 9/29. 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 Frankfurt am Main Airport to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:30 pm - 7:40 pmFRA  Frankfurt am Main-STL Lambert-St Louis
14h 10m1 stop Boston Logan Intl
Multiple Airlines Logo
7:00 am - 5:45 amSTL  Lambert-St Louis-FRA Frankfurt am Main
15h 45m1 stop Boston Logan Intl
$651Multiple Airlines
Wed, Sep 2 - Mon, Sep 7
Multiple Airlines Logo
12:30 pm - 7:40 pmFRA  Frankfurt am Main-STL Lambert-St Louis
14h 10m1 stop Boston Logan Intl
Multiple Airlines Logo
7:00 am - 5:45 amSTL  Lambert-St Louis-FRA Frankfurt am Main
15h 45m1 stop Boston Logan Intl
$696Multiple Airlines
Wed, Sep 2 - Mon, Sep 7
KLM Logo
11:00 am - 8:42 pmFRA  Frankfurt am Main-STL Lambert-St Louis
16h 42m1 stop Detroit Metropolitan Wayne County
KLM Logo
2:30 pm - 8:55 amSTL  Lambert-St Louis-FRA Frankfurt am Main
11h 25m1 stop Atlanta Hartsfield-Jackson
$719KLM
Sun, Aug 30 - Mon, Sep 14
Multiple Airlines Logo
12:30 pm - 7:40 pmFRA  Frankfurt am Main-STL Lambert-St Louis
14h 10m1 stop Boston Logan Intl
Multiple Airlines Logo
7:00 am - 5:45 amSTL  Lambert-St Louis-FRA Frankfurt am Main
15h 45m1 stop Boston Logan Intl
$720Multiple Airlines
Wed, Sep 2 - Mon, Sep 7
Lufthansa Logo
10:40 am - 1:25 pmFRA  Frankfurt am Main-STL Lambert-St Louis
9h 45mnonstop
Lufthansa Logo
8:40 am - 12:10 pmSTL  Lambert-St Louis-FRA Frankfurt am Main
20h 30m1 stop Washington, D.C. Dulles Intl
$766Lufthansa
Sun, Aug 30 - Sun, Sep 13
Lufthansa Logo
10:40 am - 1:25 pmFRA  Frankfurt am Main-STL Lambert-St Louis
9h 45mnonstop
Lufthansa Logo
3:30 pm - 7:25 amSTL  Lambert-St Louis-FRA Frankfurt am Main
8h 55mnonstop
$766Lufthansa
Sun, Aug 30 - Sun, Sep 13
Lufthansa Logo
10:40 am - 1:25 pmFRA  Frankfurt am Main-STL Lambert-St Louis
9h 45mnonstop
Lufthansa Logo
3:30 pm - 7:25 amSTL  Lambert-St Louis-FRA Frankfurt am Main
8h 55mnonstop
$768Lufthansa
Mon, Aug 24 - Sun, Sep 6
United Airlines Logo
7:45 am - 7:16 pmFRA  Frankfurt am Main-STL Lambert-St Louis
18h 31m2 stops Zurich Chicago O'Hare Intl
United Airlines Logo
12:59 pm - 9:55 amSTL  Lambert-St Louis-FRA Frankfurt am Main
13h 56m1 stop Chicago O'Hare Intl
$796United Airlines
Thu, Aug 20 - Fri, Aug 28
United Airlines Logo
6:35 am - 5:06 pmFRA  Frankfurt am Main-STL Lambert-St Louis
17h 31m2 stops Zurich Chicago O'Hare Intl
United Airlines Logo
12:59 pm - 12:10 pmSTL  Lambert-St Louis-FRA Frankfurt am Main
16h 11m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl
$796United Airlines
Tue, Aug 18 - Sat, Aug 29
United Airlines Logo
6:35 am - 5:06 pmFRA  Frankfurt am Main-STL Lambert-St Louis
17h 31m2 stops Zurich Chicago O'Hare Intl
United Airlines Logo
10:53 am - 6:30 amSTL  Lambert-St Louis-FRA Frankfurt am Main
12h 37m1 stop Chicago O'Hare Intl
$796United Airlines
Tue, Aug 18 - Mon, Aug 31

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Lufthansa flights from Frankfurt am Main Airport to St. Louis

Our best Lufthansa deals on Frankfurt am Main Airport to St. Louis flight tickets
Lufthansa
Aug 30
FRA10:40 amFrankfurt am Main
9h 45m
STL1:25 pmLambert-St Louis
Sep 13
STL8:40 amLambert-St Louis
20h 30m
1 stop
FRA12:10 pmFrankfurt am Main
$766
Lufthansa
Aug 24
FRA10:40 amFrankfurt am Main
9h 45m
STL1:25 pmLambert-St Louis
Sep 6
STL3:30 pmLambert-St Louis
8h 55m
FRA7:25 amFrankfurt am Main
$768
Lufthansa
Aug 30
FRA10:40 amFrankfurt am Main
9h 45m
STL1:25 pmLambert-St Louis
Sep 14
STL6:53 pmLambert-St Louis
12h 12m
1 stop
FRA2:05 pmFrankfurt am Main
$769

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
Aug 30
FRA7:00 amFrankfurt am Main
23h 58m
2 stops
STL11:58 pmLambert-St Louis
Sep 14
STL5:59 pmLambert-St Louis
13h 21m
2 stops
FRA2:20 pmFrankfurt am Main
$735
Delta
Aug 30
FRA7:00 amFrankfurt am Main
23h 58m
2 stops
STL11:58 pmLambert-St Louis
Sep 14
STL5:59 pmLambert-St Louis
13h 21m
2 stops
FRA2:20 pmFrankfurt am Main
$736
Delta
Aug 19
FRA10:15 amFrankfurt am Main
20h 11m
2 stops
STL11:26 pmLambert-St Louis
Sep 8
STL7:05 amLambert-St Louis
19h 45m
2 stops
FRA9:50 amFrankfurt am Main
$739

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 August 8, 2026.
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

Cheapest round-trip

Frankfurt am MainSt. Louis

FRA Frankfurt am Main - STL Lambert-St Louis

FRASTL

Frankfurt am Main

Wed 9/2

12:30 pm-7:40 pm

1 stop14h 10m

Lambert-St Louis

Mon 9/7

7:00 am-5:45 am

1 stop15h 45m

$651

Frankfurt am MainSt. Louis

FRA Frankfurt am Main - STL Lambert-St Louis

FRASTL

Frankfurt am Main

Wed 9/2

12:30 pm-7:40 pm

1 stop14h 10m

Lambert-St Louis

Mon 9/7

7:00 am-5:45 am

1 stop15h 45m

$696

Frankfurt am MainSt. Louis

FRA Frankfurt am Main - STL Lambert-St Louis

FRASTL

Frankfurt am Main

Sun 8/30

11:00 am-8:42 pm

1 stop16h 42m

Lambert-St Louis

Mon 9/14

2:30 pm-8:55 am

1 stop11h 25m

$719

Frankfurt am MainSt. Louis

FRA Frankfurt am Main - STL Lambert-St Louis

FRASTL

Frankfurt am Main

Wed 9/2

12:30 pm-7:40 pm

1 stop14h 10m

Lambert-St Louis

Mon 9/7

7:00 am-5:45 am

1 stop15h 45m

$720

Frankfurt am MainSt. Louis

FRA Frankfurt am Main - STL Lambert-St Louis

FRASTL

Frankfurt am Main

Sun 8/30

10:40 am-1:25 pm

Nonstop9h 45m

Lambert-St Louis

Sun 9/13

8:40 am-12:10 pm

1 stop20h 30m

$766
Quickest round-trip

Frankfurt am MainSt. Louis

FRA Frankfurt am Main - STL Lambert-St Louis

FRASTL

Frankfurt am Main

Sun 8/30

10:40 am-1:25 pm

Nonstop9h 45m

Lambert-St Louis

Sun 9/13

3:30 pm-7:25 am

Nonstop8h 55m

$766

Frankfurt am MainSt. Louis

FRA Frankfurt am Main - STL Lambert-St Louis

FRASTL

Frankfurt am Main

Mon 8/24

10:40 am-1:25 pm

Nonstop9h 45m

Lambert-St Louis

Sun 9/6

3:30 pm-7:25 am

Nonstop8h 55m

$768

Frankfurt am MainSt. Louis

FRA Frankfurt am Main - STL Lambert-St Louis

FRASTL

Frankfurt am Main

Thu 8/20

7:45 am-7:16 pm

2 stops18h 31m

Lambert-St Louis

Fri 8/28

12:59 pm-9:55 am

1 stop13h 56m

$796

Frankfurt am MainSt. Louis

FRA Frankfurt am Main - STL Lambert-St Louis

FRASTL

Frankfurt am Main

Tue 8/18

6:35 am-5:06 pm

2 stops17h 31m

Lambert-St Louis

Sat 8/29

12:59 pm-12:10 pm

2 stops16h 11m

$796

Frankfurt am MainSt. Louis

FRA Frankfurt am Main - STL Lambert-St Louis

FRASTL

Frankfurt am Main

Tue 8/18

6:35 am-5:06 pm

2 stops17h 31m

Lambert-St Louis

Mon 8/31

10:53 am-6:30 am

1 stop12h 37m

$796

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?

Prices are currently low for flights on this route.

Typical prices usually range from $843 to $1,062.
The lowest price recently found on this route was $651.

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

In general, October 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 $771. The month of January is another great option to travel to St. Louis, with average flight prices from Frankfurt am Main Airport averaging around $799.

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 Friday when prices can be found for as low as $798. 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 Sunday because tickets tend to average around $1,451. 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 from Frankfurt am Main Airport 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 $899 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 $796 on momondo.

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

There is only 1 cabin class available to choose from on Frankfurt am Main Airport to 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 2% 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 August 2026, prices for Frankfurt am Main Airport to St. Louis flights are approximately 48% cheaper 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

Best Price Found

$1,396

Fastest flight time

9h 45m

Direct flights

Mon, Tue, Wed, Thu and Sat

Airports in St. Louis

1 airport
The best flight deal from Frankfurt am Main Airport to St. Louis found on momondo in the last 72 hours is $1,396
The fastest flight from Frankfurt am Main Airport to St. Louis takes 9h 45m
Direct flights go from Frankfurt am Main Airport to St. Louis on Monday, Tuesday, Wednesday, Thursday and Saturday. There are no airlines offering direct flights.
There is 1 airport in St. Louis. From Frankfurt am Main Airport there are direct flights to Lambert-St Louis (STL).
Search flight deals

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

  • 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 45m, 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 $655Free CancellationRating
6.8
8,177 reviews
Search Lufthansa flights
United AirlinesPriceFrom $665Free CancellationRating
7.4
10,084 reviews
Search United Airlines flights

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

    Across 5 United Airlines flights from Frankfurt am Main Airport to St. Louis this week, the average price was $795, with the best United Airlines deals starting from $665 round-trip. 10,084 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 8,177 Lufthansa reviews on momondo, the average score is 6.8/10. Lufthansa flies from Frankfurt am Main Airport to St. Louis about 5 times each week, with ticket deals ranging from $655 to $884. 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
Fairview Heights
Hermann
St. Peters
Maryland Heights
Florissant
Collinsville
Alton
O'Fallon
Clayton
Farmington
Fenton
Wentzville
Festus
Eureka
Edwardsville
Litchfield
Grafton
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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