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St. Louis

$447+ Cheap flights from Frankfurt (FRA) to St. Louis (STL)

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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
FRA — STL
Jul 16 — Jul 231
Wed 7/16
Wed 7/23
1 adult, Economy
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Cheapflights Tip: The best prices from Frankfurt am Main to Lambert-St Louis are usually found in November or April, booked 90 days in advance, depart on a Monday or Wednesday and return on a Monday

Cheap flight deals from Frankfurt to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Frankfurt (FRA) to St. Louis (STL). 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 July 11, 2025.

Round-trip from

$605
(Flysmarter)

One-way from

$447
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$841

Good round-trip deal

$978 or less

Good one-way deal

$661 or less
From Frankfurt am Main to Lambert-St Louis
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One-way flight from Frankfurt am Main to Lambert-St Louis
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Highest demand for flights based on searches. 4% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Frankfurt am Main to Lambert-St Louis.
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Price to beat on a one-way flight from Frankfurt am Main to Lambert-St Louis.
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Find flight deals from Frankfurt to St. Louis

Cheapest flights from Frankfurt to St. Louis
Explore the most affordable flight options available from Frankfurt to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2025.

This Flysmarter deal was found by Cheapflights users on 7/10. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/305:35 pmFRA - STL
1 stop33h 25mMultiple Airlines
Sat 9/201:30 pmSTL - FRA
2 stops13h 35mMultiple Airlines
Deal found 7/10$605
This Flysmarter deal was found by Cheapflights users on 7/10. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/119:55 amFRA - STL
1 stop17h 02mAir Canada
Thu 9/251:30 pmSTL - FRA
1 stop11h 40mAir Canada
Deal found 7/10$606
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/119:55 amFRA - STL
1 stop17h 02mUnited Airlines
Thu 9/2512:25 pmSTL - FRA
2 stops15h 40mUnited Airlines
Deal found 7/9$609
This Ticket deal was found by Cheapflights users on 7/10. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3110:55 amFRA - STL
1 stop14h 34mBritish Airways
Sun 9/144:02 pmSTL - FRA
1 stop33h 43mBritish Airways
Deal found 7/10$614
This Travelis deal was found by Cheapflights users on 7/10. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/317:00 amFRA - STL
2 stops16h 06mKLM
Sun 9/145:40 pmSTL - FRA
2 stops12h 55mKLM
Deal found 7/10$620
This Lufthansa deal was found by Cheapflights users on 7/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:45 amFRA - STL
2 stops15h 59mLufthansa
Mon 10/138:05 amSTL - FRA
1 stop14h 25mLufthansa
Deal found 7/10$623
This American Airlines deal was found by Cheapflights users on 7/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:20 amFRA - STL
1 stop16h 12mAmerican Airlines
Mon 10/1312:52 pmSTL - FRA
1 stop11h 28mAmerican Airlines
Deal found 7/10$653
This Delta deal was found by Cheapflights users on 7/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/112:15 pmFRA - STL
2 stops15h 59mDelta
Sun 8/177:00 amSTL - FRA
1 stop18h 55mDelta
Deal found 7/10$661
This Austrian Airlines deal was found by Cheapflights users on 7/10. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/48:20 amFRA - STL
2 stops22h 27mAustrian Airlines
Sun 10/1212:25 pmSTL - FRA
2 stops24h 35mAustrian Airlines
Deal found 7/10$668

Cheapflights Fare Finder

Customize your flight search to find flights from Frankfurt 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, Cheapflights users made 2,558,603 searches. Data last updated July 11, 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

Frankfurt

Fly to

St. Louis

Route

Depart

Return

Price

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sat 8/30

5:35 pm-8:00 pm

1 stop33h 25m

Lambert-St Louis

Sat 9/20

1:30 pm-10:05 am

2 stops13h 35m

$605

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Thu 9/11

9:55 am-7:57 pm

1 stop17h 02m

Lambert-St Louis

Thu 9/25

1:30 pm-8:10 am

1 stop11h 40m

$606

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Thu 9/11

9:55 am-7:57 pm

1 stop17h 02m

Lambert-St Louis

Thu 9/25

12:25 pm-11:05 am

2 stops15h 40m

$609

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sun 8/31

10:55 am-6:29 pm

1 stop14h 34m

Lambert-St Louis

Sun 9/14

4:02 pm-8:45 am

1 stop33h 43m

$614

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sun 8/31

7:00 am-4:06 pm

2 stops16h 06m

Lambert-St Louis

Sun 9/14

5:40 pm-1:35 pm

2 stops12h 55m

$620

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Tue 9/30

6:45 am-3:44 pm

2 stops15h 59m

Lambert-St Louis

Mon 10/13

8:05 am-5:30 am

1 stop14h 25m

$623

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Tue 9/30

9:20 am-6:32 pm

1 stop16h 12m

Lambert-St Louis

Mon 10/13

12:52 pm-7:20 am

1 stop11h 28m

$653

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Mon 8/11

2:15 pm-11:14 pm

2 stops15h 59m

Lambert-St Louis

Sun 8/17

7:00 am-8:55 am

1 stop18h 55m

$661

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sat 10/4

8:20 am-11:47 pm

2 stops22h 27m

Lambert-St Louis

Sun 10/12

12:25 pm-8:00 pm

2 stops24h 35m

$668

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Wed 11/19

9:20 am-4:30 pm

3 stops38h 10m

$447

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 14 results
1
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The best insider tips for Frankfurt am Main Airport to St. Louis flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Frankfurt am Main Airport to St. Louis trip
Airports
FRA

Download the official FRA app to stay updated on strikes and key info, ensuring a smooth departure experience.

Read more about FRAby Blane Bachelor
STL

Use the MetroLink light rail for a convenient and economical way to reach downtown St. Louis from STL.

Read more about STLby Taryn White
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on FRA

Blane Bachelor

Blane Bachelor

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

Taryn White

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

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Frankfurt 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 Frankfurt am Main Airport to St. Louis

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

Use this chart to determine the optimal time to book a round-trip flight from Frankfurt to St. Louis. Price data was last updated on June 27, 2025.

The best time to book flights from Frankfurt am Main Airport to St. Louis is 90 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 Frankfurt am Main Airport to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Frankfurt am Main Airport to St. Louis (average of $311). Flying from Frankfurt am Main Airport to St. Louis in March is currently the most expensive (average of $356). 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 FRA to STL?

Find hourly flight availability from Frankfurt to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 11, 2025.

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

How much does it cost to fly round-trip from Frankfurt am Main Airport to St. Louis?

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated July 11, 2025.
Read through reviews of airlines operating flights from Frankfurt am Main Airport to St. Louis, such as Delta, KLM, and Austrian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,951 reviews
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
808 reviews
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,846 reviews
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,951 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Frankfurt to St. Louis. 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 into for flights to St. Louis from Frankfurt am Main?

    For a flight from Frankfurt am Main to St. Louis, you will be flying into 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 inbound flights from Frankfurt am Main per day. 3 airlines have flights to Lambert-St Louis from Frankfurt am Main on a regular basis.

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

    Cheapflights users have booked flights from Frankfurt am Main Airport to St. Louis round-trip from $606. Other airlines that can offer you cheap pricing are United Airlines, from $609, and British Airways, from $614. Air Canada is priced at 17% lower than the current average price of a flight leaving 3 months from now.

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

    $582 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Austrian Airlines and Lufthansa, with prices starting from $654 and $659, respectively.

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

    The cheapest flight price from Frankfurt am Main Airport to St. Louis is $655. On average you can expect to pay $872. The most popular route, (Frankfurt am Main - Lambert-St Louis), can usually be booked for $606.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Frankfurt am Main Airport to St. Louis (average of $311). Flying from Frankfurt am Main Airport to St. Louis in March is currently the most expensive (average of $356). 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
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Festus
Chesterfield
Farmington

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Top 3 airlines flying from Frankfurt to St. Louis

Discover the top 3 airlines that operate flights from Frankfurt to St. Louis. 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 July 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$557Average$626FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$584Average$882FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$592Average$795FlexibilityNo cancel feeOn-time69%

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