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Frankfurt

$403+ Cheap flights from St. Louis (STL) to Frankfurt (FRA)

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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FRA
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Frankfurt am Main are usually found in March or January, booked 3 days in advance, depart on a Tuesday or Monday and return on a Thursday

Cheap flight deals from St. Louis to Frankfurt

Cheapest flights from St. Louis to Frankfurt
Explore the most affordable flight options available from St. Louis to Frankfurt. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This Expedia deal was found by Cheapflights users on 3/7. 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 12/21:30 pm
STL
-
FRA
2 stops18h 00m
Scandinavian Airlines
Tue 12/83:15 pm
FRA
-
STL
2 stops39h 24m
Scandinavian Airlines
Deal found 3/7$725
This Scandinavian Airlines deal was found by Cheapflights users on 3/9. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:30 pm
STL
-
FRA
2 stops18h 00m
Scandinavian Airlines
Sun 12/63:15 pm
FRA
-
STL
2 stops39h 24m
Scandinavian Airlines
Deal found 3/9$737
This KAYAK deal was found by Cheapflights users on 3/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/53:42 pm
STL
-
FRA
2 stops15h 53m
Scandinavian Airlines
Fri 10/93:20 pm
FRA
-
STL
2 stops39h 19m
Scandinavian Airlines
Deal found 3/6$738
This Expedia deal was found by Cheapflights users on 3/9. 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.
Sun 9/61:30 pm
STL
-
FRA
2 stops18h 05m
Scandinavian Airlines
Sun 9/203:20 pm
FRA
-
STL
2 stops39h 17m
Scandinavian Airlines
Deal found 3/9$755
This KAYAK deal was found by Cheapflights users on 3/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:30 pm
STL
-
FRA
2 stops37h 20m
Scandinavian Airlines
Sat 12/53:15 pm
FRA
-
STL
2 stops39h 24m
Scandinavian Airlines
Deal found 3/10$761
This KAYAK deal was found by Cheapflights users on 3/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/234:21 pm
STL
-
FRA
2 stops16h 09m
Scandinavian Airlines
Mon 3/303:20 pm
FRA
-
STL
2 stops39h 38m
Scandinavian Airlines
Deal found 3/6$765
This KAYAK deal was found by Cheapflights users on 3/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:42 pm
STL
-
FRA
2 stops15h 53m
Scandinavian Airlines
Mon 10/123:20 pm
FRA
-
STL
2 stops36h 29m
Scandinavian Airlines
Deal found 3/6$768
This Expedia deal was found by Cheapflights users on 3/6. 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.
Mon 10/53:42 pm
STL
-
FRA
2 stops21h 03m
Multiple Airlines
Sat 10/107:50 am
FRA
-
STL
2 stops22h 49m
Multiple Airlines
Deal found 3/6$778
This KAYAK deal was found by Cheapflights users on 3/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:42 pm
STL
-
FRA
2 stops15h 53m
Scandinavian Airlines
Sun 10/113:20 pm
FRA
-
STL
2 stops39h 19m
Scandinavian Airlines
Deal found 3/6$798
This Expedia deal was found by Cheapflights users on 3/9. 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.
Sun 9/63:42 pm
STL
-
FRA
2 stops15h 53m
Multiple Airlines
Sun 9/207:50 am
FRA
-
STL
2 stops20h 00m
Multiple Airlines
Deal found 3/9$808
This FlightHub deal was found by Cheapflights users on 3/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:30 pm
STL
-
FRA
2 stops38h 20m
Scandinavian Airlines
Sun 11/13:15 pm
FRA
-
STL
2 stops39h 24m
Scandinavian Airlines
Deal found 3/7$823
This Expedia deal was found by Cheapflights users on 3/5. 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.
Sun 10/253:42 pm
STL
-
FRA
2 stops13h 58m
Multiple Airlines
Fri 10/3010:35 am
FRA
-
STL
2 stops19h 04m
Multiple Airlines
Deal found 3/5$830

Find flight deals from St. Louis to Frankfurt

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Frankfurt (FRA). 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$737
(KAYAK)

One-way from

$403
(Kiwi.com)

Popular in

June

Cheapest in

March

Average price

$919

Good round-trip deal

$860 or less

Good one-way deal

$474 or less
Provider with most accurate pricing for Lambert-St Louis-Frankfurt am Main flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Frankfurt am Main flights.
Search Deals
From Lambert-St Louis to Frankfurt am Main
Search Deals
One-way flight from Lambert-St Louis to Frankfurt am Main
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($240 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Frankfurt am Main.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Frankfurt am Main.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Frankfurt 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 March 10, 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 - FRA

STLFRA

Lambert-St Louis

Mon 8/17

3:42 pm-7:45 pm

2 stops21h 03m

Frankfurt am Main

Mon 8/31

7:00 am-8:50 pm

3 stops20h 50m

$898

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sun 9/6

3:42 pm-2:35 pm

2 stops15h 53m

Frankfurt am Main

Sun 9/20

7:00 am-11:37 pm

3 stops23h 37m

$928

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Mon 4/27

4:49 pm-11:15 am

1 stop35h 26m

Frankfurt am Main

Sat 5/9

10:00 am-12:06 pm

1 stop33h 06m

$975

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Mon 4/27

6:05 pm-9:20 am

1 stop32h 15m

Frankfurt am Main

Sun 5/10

5:05 pm-12:06 pm

1 stop26h 01m

$975

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Thu 5/7

3:20 pm-9:55 am

1 stop11h 35m

Frankfurt am Main

Fri 5/15

9:55 am-8:25 pm

1 stop17h 30m

$982
Quickest round-trip

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Thu 7/9

9:55 am-5:45 am

1 stop12h 50m

Frankfurt am Main

Thu 7/16

12:30 pm-8:55 pm

1 stop15h 25m

$1,189

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Fri 5/15

10:25 am-9:55 am

1 stop16h 30m

Frankfurt am Main

Fri 5/22

9:55 am-11:41 am

2 stops32h 46m

$1,268

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sat 5/23

7:41 pm-12:45 pm

1 stop34h 04m

Frankfurt am Main

Thu 6/4

11:55 am-4:37 pm

1 stop35h 42m

$1,439

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Thu 7/9

7:56 pm-1:00 pm

1 stop34h 04m

Frankfurt am Main

Thu 7/16

2:35 pm-4:33 pm

2 stops32h 58m

$1,484

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sun 3/22

6:00 am-8:40 am

1 stop20h 40m

Frankfurt am Main

Sun 3/29

11:00 am-4:32 pm

1 stop12h 32m

$1,488

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from St. Louis to Frankfurt

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Frankfurt in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
Thrive TravelPrice Accuracy3 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Frankfurt am Main Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Frankfurt am Main Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Frankfurt am Main Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Frankfurt am Main Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Frankfurt am Main Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Frankfurt 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 Airport

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Frankfurt. Price data was last updated on March 6, 2026.

The price you pay for your flight from St. Louis to Frankfurt am Main Airport may vary depending on when you book. For the best chance of a lower fare, look to book 2 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from St. Louis to Frankfurt am Main Airport (average of $470). Flying from St. Louis to Frankfurt am Main Airport in May is currently the most expensive (average of $869). 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. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Frankfurt am Main Airport as you normally would.

The best insider tips for St. Louis to Frankfurt am Main Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Frankfurt am Main Airport trip
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on FRA

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more

Reviews of airlines servicing Frankfurt

Get insights into the airlines that provide service to Frankfurt. 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. Reviews last updated March 10, 2026.
Read through reviews of airlines operating flights from St. Louis to Frankfurt am Main Airport, such as United Airlines,American Airlines, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,413 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,413 reviews
United Airlines
7.4
Good
9,413 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,415 reviews
United Airlines
7.4
Good
9,413 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Air Canada
7.1
Good
10,800 reviews
United Airlines
7.4
Good
9,413 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,841 reviews
United Airlines
7.4
Good
9,413 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,781 reviews
United Airlines
7.4
Good
9,413 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Frankfurt. 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?

    For a flight from St. Louis to Frankfurt am Main, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 outbound flights to Frankfurt am Main per day. 7 airlines have flights to Frankfurt am Main from Lambert-St Louis on a regular basis.

  • How long is the flight from St. Louis to Frankfurt am Main Airport?

    For as low as $898, Scandinavian Airlines can have you in Frankfurt am Main Airport from St. Louis in 21h 03m. St. Louis and Frankfurt am Main Airport are separated by a distance of 4577 mi. This flight may include one or multiple stops.

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

    American Airlines, at $390, was found to be the cheapest airline from St. Louis to Frankfurt am Main Airport.Alternate airlines to your destination round-trip include British Airways and Delta. American Airlines is 65% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Looking for the cheapest flight from St. Louis to Frankfurt am Main Airport? While on average our users pay $1,623, our data indicates the cheapest price to be $281. The most popular route (Lambert-St Louis - Frankfurt am Main), is priced around $737.

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

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

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

    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.

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

    Yes. Cheapflights offers flight deals from St. Louis to Frankfurt 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 Airport?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Frankfurt am Main Airport (average of $470). Flying from St. Louis to Frankfurt am Main Airport in May is currently the most expensive (average of $869). 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.

See more FAQs

Traveling to a place near Frankfurt am Main Airport?

Book flights to Frankfurt am Main Airport if you plan to visit one of these locations
Koblenz
Wurzburg
Baden-Baden
Speyer
Heilbronn
Trier
Boppard
Mainz

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Alternative routes for St. Louis to Frankfurt

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Frankfurt flights
Springfield to Frankfurt flights
Columbia to Frankfurt flights

Top 7 airlines flying from St. Louis to Frankfurt

Discover the top 7 airlines that operate flights from St. Louis to Frankfurt. 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$390Average$872FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$470Average$911FlexibilityNo cancel feeOn-time70%
DeltaCheapest$610Average$942FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$723Average$1,091FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$739Average$1,130FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$816Average$1,328FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$916Average$1,202FlexibilityNo cancel feeOn-time67%

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