FRA - STL

$555 Find Cheap Flights from Frankfurt am Main to St. Louis

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Frankfurt am Main to St. Louis departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Frankfurt am Main to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Frankfurt am Main to St. Louis, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Frankfurt am Main to St. Louis (FRA-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Frankfurt am Main to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Frankfurt am Main to St. Louis

Fri, Sep 19 - Fri, Oct 3
Air Canada Logo
9:55 am - 7:57 pmFRA-STL
17h 02m1 stop
Air Canada Logo
1:30 pm - 8:10 amSTL-FRA
11h 40m1 stop
$555Air Canada
Find Deal
Fri, Sep 19 - Fri, Oct 3
United Airlines Logo
10:40 am - 1:30 pmFRA-STL
9h 50mnonstop
United Airlines Logo
12:25 pm - 9:55 amSTL-FRA
14h 30m1 stop
$562United Airlines
Find Deal
Fri, Sep 19 - Fri, Oct 3
Lufthansa Logo
10:40 am - 1:30 pmFRA-STL
9h 50mnonstop
Lufthansa Logo
3:30 pm - 7:25 amSTL-FRA
8h 55mnonstop
$570Lufthansa
Find Deal
Thu, Nov 27 - Sat, Dec 27
 Logo
5:25 pm - 5:39 pmFRA-STL
31h 14m1 stop
 Logo
4:05 pm - 6:40 amSTL-FRA
31h 35m1 stop
Mon, Nov 24 - Mon, Dec 29
American Airlines Logo
10:15 am - 10:29 pmFRA-STL
19h 14m1 stop
American Airlines Logo
4:41 pm - 6:10 pmSTL-FRA
18h 29m2 stops
$577American Airlines
Find Deal
Fri, Sep 19 - Fri, Oct 3
Lufthansa Logo
10:40 am - 1:30 pmFRA-STL
9h 50mnonstop
Lufthansa Logo
12:25 pm - 6:30 amSTL-FRA
11h 05m1 stop
$582Lufthansa
Find Deal
Sat, Sep 13 - Sat, Sep 20
British Airways Logo
6:40 am - 8:15 pmFRA-STL
20h 35m2 stops
British Airways Logo
5:25 pm - 6:50 pmSTL-FRA
18h 25m2 stops
$589British Airways
Find Deal
Fri, Sep 19 - Fri, Oct 3
 Logo
9:55 am - 7:38 pmFRA-STL
16h 43m2 stops
 Logo
1:30 pm - 10:05 amSTL-FRA
13h 35m2 stops
Sat, Aug 30 - Sat, Sep 6
British Airways Logo
10:55 am - 8:22 pmFRA-STL
16h 27m1 stop
British Airways Logo
3:59 pm - 10:40 pmSTL-FRA
23h 41m2 stops
$633British Airways
Find Deal
Wed, Aug 13 - Wed, Nov 12
American Airlines Logo
9:20 am - 4:56 pmFRA-STL
14h 36m1 stop
American Airlines Logo
6:04 pm - 4:40 pmSTL-FRA
15h 36m2 stops
$641American Airlines
Find Deal
Expert advice

Expert advice for your flight from Frankfurt am Main to St. Louis

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-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.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

United Polaris offers lie-flat seats with aisle access, ideal for long-haul comfort.


United Polaris Lounge provides restaurant meals and less crowded spaces for premium passengers.

Lufthansa

Enjoy three-course meals and complimentary drinks in Economy on long-haul flights.


Lufthansa offers 11 special meal choices for dietary requirements, bookable 24 hours before departure.

Read more about Lufthansaby Jessica Macdonald
Airports
FRA

Expect long queues at check-in and security. Arrive early, especially during peak times, and consider online check-in to save time.

Read more about FRAby Duncan Madden
STL

Use MetroLink for a convenient ride into St. Louis. The Red Line connects the airport to key city areas like Delmar Loop and downtown.

Read more about STLby Yulia Denisyuk
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Jessica Macdonald

Jessica Macdonald

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Read more
Duncan Madden

Duncan Madden

Expert on FRA

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more
Booking Insights

KAYAK's insights & trends for Frankfurt am Main to St. Louis flights

Get data-powered insights and trends into flights from Frankfurt am Main to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Frankfurt am Main to St. Louis?

The average price of all round-trip flights from Frankfurt am Main Airport to St. Louis clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Frankfurt am Main to St. Louis, look for departures on Tuesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from St. Louis, Monday is the cheapest day to fly and Saturday is the most expensive.

What is the cheapest month to fly from Frankfurt am Main Airport to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Frankfurt am Main Airport to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Frankfurt am Main Airport to St. Louis is November, where tickets cost $613 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $915 and $852 respectively.

Can I save money by flying with a layover from Frankfurt am Main Airport to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $653, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Frankfurt am Main Airport to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Frankfurt am Main Airport to St. Louis, you should book around 3 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$555
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 15% increase in price.
Flight from Frankfurt am Main to St. Louis

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

Are your dates flexible? Find out the best times to travel from Frankfurt am Main to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Frankfurt am Main to St. Louis flights

  • What is the cheapest flight from Frankfurt am Main Airport to St. Louis?

    In the last 3 days, the lowest price for a flight from Frankfurt am Main Airport to St. Louis was $646 for a one-way ticket and $555 for a round-trip.

  • Do I need a passport to fly between Frankfurt am Main and St. Louis?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Frankfurt am Main and on arrival in St. Louis.

  • Which airports will I be using when flying from Frankfurt am Main to St. Louis?

    On your way to St. Louis, you’ll fly out from Frankfurt am Main. You’ll be landing at Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from Frankfurt am Main to St. Louis?

    Lufthansa, and United Airlines offer inflight Wi-Fi service on the Frankfurt am Main to St. Louis flight route.

  • Which aircraft models fly most regularly from Frankfurt am Main to St. Louis?

    The Airbus A330-300 is the aircraft model that flies most regularly on the Frankfurt am Main to St. Louis flight route.

  • Which airline alliances offer flights from Frankfurt am Main to St. Louis?

    Star Alliance is the only airline alliance operating flights between Frankfurt am Main and St. Louis.

  • On which days can I fly direct from Frankfurt am Main to St. Louis?

    You can catch a nonstop flight from Frankfurt am Main to St. Louis on Wednesday, Friday, and Sunday.

  • Which is the best airline for flights from Frankfurt am Main to St. Louis, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Frankfurt am Main to St. Louis are United Airlines and American Airlines. With an average price for the route of $814 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $626 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Frankfurt am Main to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Frankfurt am Main to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Frankfurt am Main to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Frankfurt am Main is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Frankfurt am Main to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Frankfurt am Main with another airline. Booking your flights between Frankfurt am Main and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Frankfurt am Main to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Frankfurt am Main up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Frankfurt am Main Airport to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $1,261 or less round-trip.

Prefer to fly direct from Frankfurt am Main to St. Louis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Frankfurt am Main to Lambert-St Louis.
Find which airlines fly direct from Frankfurt am Main Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Frankfurt am Main to Lambert-St Louis

Wednesday

Lufthansa, United Airlines

Lufthansa, United Airlines

Friday

Lufthansa, United Airlines

Lufthansa, United Airlines

Sunday

Lufthansa, United Airlines

Lufthansa, United Airlines

See more direct flights

Direct returns

Lambert-St Louis to Frankfurt am Main

Wednesday

Lufthansa, United Airlines

Lufthansa, United Airlines

Friday

Lufthansa, United Airlines

Lufthansa, United Airlines

Sunday

Lufthansa, United Airlines

Lufthansa, United Airlines

See more direct flights

Reviews of the top 3 airlines serving from Frankfurt am Main to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Frankfurt am Main to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Frankfurt am Main to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8900 reviews
7.1Entertainment
7.3Comfort
7.7Boarding
8.1Crew
6.6Food
Airline reviews

Not good , late, and long. We came home so late and spent so much time flying around and taxiing

4.0 OkayHanka, Jul 2025VIE - EWR
Read more United Airlines reviews

Not good , late, and long. We came home so late and spent so much time flying around and taxiing

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Ok. Get a different kosher caterer. The food was odd.

Food was terrible. Crew was kind but skipped over my row for providing sandwiches and beverages.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

Lost luggage, they need a baggage service representative available all times in Atlanta

The crew was fantastic. They were there whenever we needed. The wifi didn’t work which was brutal on an 11 hour flight. The onboard entertainment was boring. Nothing of interest

We had to turn around and head back to Manchester. Problem with a plane engine.

Flight was delayed. Staff at the gate effectively and proactively communicated about the delay.

Very poor delay in dfw was really bad n long

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

It was very difficult to stretch my knee out and I am very short. I also had a torn tendon in my knee which made it extra uncomfortable anyways. My husband is 6'2" and I can't imagine him flying in that plane.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

Very clean and comfortable cabin. Amazing Mediterranean salad for lunch before landing. Great range of films to watch. Really quiet and easy to sleep on the flight also. The initial food was a bit weird: odd fried chicken pieces in some weird white gloop, but that would be my lack of cultural knowledge on the grub. Salad more than made up for it at the other end. Staff were super attentive and helpful. Great and easy flight

International baggage recheck process in Philadelphia was a disaster. Waited 1 hour and 45 minutes to receive our bags. Waited 15 minutes to recheck bags, flight notification boards were blank so we asked an AA representative for our connecting gate and we were directed to the wrong terminal and gate. Our connection window was over 3 hours and we made our flight by 5 minutes. We pulled away from the gate and sat on the runway for 1 1/2 hours. 1 of our 4 bags didn’t make it to Phoenix. The mobile app for lost baggage didn’t work, the AA rep had to manually fix.

very small seats screen did not work . I could not watch anything for 9 hours

The seating arrangement by having privacy screens would have been more appealing. If you sit in the business class, you pay for extra comfort and privacy. Other than that, the service was excellent and the staff very professional.

Flights were delayed but very last minute, also seats felt very squished on the second flight. Crew was very friendly and airplane was clean.

I darted through the Frankfurt airport to make my connecting flight. I asked if it was a possibility to upgrade and the agent did. This was the kindest gesture and it made up for the previous delayed flight and distress/anxiety of anticipating that Zi was going to miss my Frankfurt-Chicago connection. I cannot express my gratitude for the upgrade.. I am 5feet 10 inches do the leg space was amazing.

Great experience. Flight was on time and reached destination on time

I meant this flight was not good, the one from Tirana to Frankfurt was better!

Easy checkin. Things went off without a hitch. The the movie selection for the flight wasn’t great, though.

food, movie entertainment upgraded current, interconnecting flights being on time, we have a 24-hour overlay

Exit row seat that cost extra to book had a bad monitor marked as out of order, so clearly something they should have fixed.

I was very grateful for Lufthansa's role in organizing mobility support. The touchscreen on my seat was faulty: slow, stained (I couldn't get it clean), and glitchy. This made selecting movies extremely time consuming, and twice I had to start all over from the beginning.

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

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