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Frankfurt am Main

$383+ Cheap flights from St. Louis (STL) to Frankfurt am Main

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FRA
Aug 7 — Aug 141
Thu 8/7
Thu 8/14
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Frankfurt am Main are usually found in November or August, booked 32 days in advance, depart on a Monday or Wednesday and return on a Monday

Cheap flight deals from St. Louis to Frankfurt am Main

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Frankfurt am Main (FK0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 2, 2025.

Round-trip from

$693
(AirNGo)

One-way from

$383
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$878
From Lambert-St Louis to Frankfurt am Main
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One-way flight from Lambert-St Louis to Frankfurt am Main
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Highest demand for flights based on searches. 20% potential increase in price ($299 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from St. Louis to Frankfurt am Main

Cheapest flights from St. Louis to Frankfurt am Main
Explore the most affordable flight options available from St. Louis to Frankfurt am Main. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.

This AirNGo deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/124:05 pmSTL - FRA
1 stop12h 05mAir Canada
Wed 11/199:45 amFRA - STL
2 stops20h 00mAir Canada
Deal found 7/30$693
This flugladen.de deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/123:50 pmSTL - FRA
Nonstop8h 40mMultiple Airlines
Wed 11/195:10 pmFRA - STL
1 stop29h 19mMultiple Airlines
Deal found 7/30$711
This CrystalTravel deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/233:50 pmSTL - FRA
Nonstop8h 40mLufthansa
Wed 12/1710:45 amFRA - STL
Nonstop10h 10mLufthansa
Deal found 7/31$722
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/193:50 pmSTL - FRA
Nonstop8h 40mUnited Airlines
Wed 11/269:45 amFRA - STL
2 stops32h 06mUnited Airlines
Deal found 7/31$729
This Expedia deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/103:36 pmSTL - FRA
2 stops16h 04mScandinavian Airlines
Wed 9/243:20 pmFRA - STL
2 stops39h 04mScandinavian Airlines
Deal found 7/30$734

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Frankfurt am Main 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, Cheapflights users made 2,558,603 searches. Data last updated August 2, 2025.
Use the filters below to find and compare flights from St. Louis to Frankfurt am Main that are best for you.

Fly from

St. Louis

Fly to

Frankfurt am Main

Route

Depart

Return

Price

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 11/12

4:05 pm-11:10 am

1 stop12h 05m

Frankfurt am Main

Wed 11/19

9:45 am-10:45 pm

2 stops20h 00m

$693

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 11/12

3:50 pm-7:30 am

Nonstop8h 40m

Frankfurt am Main

Wed 11/19

5:10 pm-3:29 pm

1 stop29h 19m

$711

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sun 11/23

3:50 pm-7:30 am

Nonstop8h 40m

Frankfurt am Main

Wed 12/17

10:45 am-1:55 pm

Nonstop10h 10m

$722

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 11/19

3:50 pm-7:30 am

Nonstop8h 40m

Frankfurt am Main

Wed 11/26

9:45 am-10:51 am

2 stops32h 06m

$729

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 9/10

3:36 pm-2:40 pm

2 stops16h 04m

Frankfurt am Main

Wed 9/24

3:20 pm-11:24 pm

2 stops39h 04m

$734

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sun 9/28

5:15 pm-6:50 pm

3 stops42h 35m

$383

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sat 10/18

8:00 am-8:10 am

2 stops41h 10m

$490

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sat 10/18

4:05 pm-6:30 am

1 stop31h 25m

$496

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sun 9/28

12:25 pm-9:55 am

1 stop14h 30m

$540

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Fri 10/17

10:10 am-8:45 am

1 stop15h 35m

$1,122

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 14 results
1
2

Best time to book a flight from St. Louis to Frankfurt am Main

Have a flexible travel schedule? Discover the best time to fly to Frankfurt am Main from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Frankfurt am Main

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Frankfurt am Main. Price data was last updated on July 25, 2025.

The best time to book flights from St. Louis to Frankfurt am Main is 32 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from St. Louis to Frankfurt am Main?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Frankfurt am Main (average of $729). Flying from St. Louis to Frankfurt am Main in June is currently the most expensive (average of $1,088). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to FRA?

Find hourly flight availability from St. Louis to Frankfurt am Main. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 2, 2025.

One of the essential ways to save on airfare from St. Louis to Frankfurt am Main is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 10% on airfare.

Reviews of airlines servicing Frankfurt am Main

Get insights into the airlines that provide service to Frankfurt am Main. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Frankfurt am Main. Reviews last updated August 2, 2025.
Read reviews from past customers who have flown Alaska Airlines, KLM, and United Airlines from St. Louis to Frankfurt am Main. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
KLM
7.8
Good
1,384 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,904 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Scandinavian Airlines
7.4
Good
1,457 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
WestJet
7.2
Good
2,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Frankfurt am Main. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Frankfurt am Main?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Frankfurt am Main from St. Louis. Booking flights from Lambert-St Louis (STL) to Frankfurt am Main should be relatively easy as there are 0 daily outbound flights to Frankfurt am Main from 7 different airlines.

  • What are the cheapest airlines flying from St. Louis to Frankfurt am Main round-trip?

    Flying on Air Canada is currently your cheapest option to Frankfurt am Main, with prices starting at $693. Additional round-trip tickets that might be worth considering are offered by Lufthansa and United Airlines, with the lowest prices starting at $722 and $729, respectively. You may be able to fly from St. Louis to Frankfurt am Main for 39% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from St. Louis to Frankfurt am Main one-way?

    $490 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on United Airlines and Lufthansa, with prices starting from $496 and $540, respectively.

  • What are the cheapest flights from St. Louis to Frankfurt am Main?

    Looking at all options, your cheapest flight can be booked for $456. While the most popular route (Lambert-St Louis - Frankfurt am Main) can be booked for $733 on average our data indicates $2,301 when flying from St. Louis to Frankfurt am Main.

  • Can I find deals for flights from St. Louis to Frankfurt am Main that include hotel bookings?

    Yes. In addition to deals on St. Louis to Frankfurt am Main flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Frankfurt am Main?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Frankfurt am Main.

  • Can I find deals for business class flights from St. Louis to Frankfurt am Main?

    Yes. Cheapflights offers flight deals from St. Louis to Frankfurt am Main by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Frankfurt am Main?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Frankfurt am Main (average of $729). Flying from St. Louis to Frankfurt am Main in June is currently the most expensive (average of $1,088). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 7 airlines flying from St. Louis to Frankfurt am Main

Discover the top 7 airlines that operate flights from St. Louis to Frankfurt am Main. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$576Average$945FlexibilityNo cancel feeOn-time71%
DeltaCheapest$610Average$1,182FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$631Average$946FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$778Average$1,136FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$783Average$1,406FlexibilityNo cancel feeOn-time76%
KLMCheapest$845Average$1,091FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$921Average$1,303FlexibilityNo cancel feeOn-time67%

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