FRA - STL

$453 Find Cheap Flights from Frankfurt am Main to St. Louis

This is the cheapest one-way 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 5/17. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$678
Typical prices: $622-$838
Finnair
Wed 4/22Wed 4/29
FRA - STL • 2 stops
Cheapest non-stop
$773
Typical prices: $763-$1,170
Lufthansa
Fri 4/3Sun 4/19
FRA - STL • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Lufthansa offers three-course meals in Economy.
Expect long queues at Frankfurt's check-in and security.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
Wed, Fri, Sun
You can fly direct with Lufthansa. Average duration is 9h 45m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top airlines
Cheapest • from $678 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $637 (round-trip)
Shortest trip • 12h 43m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 15% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Expert advice
Flight 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

Wed, Apr 22 - Wed, Apr 29
Finnair Logo
11:30 am - 10:17 pm
FRA
-
STL
17h 47m
2 stops
Finnair Logo
5:21 pm - 6:35 pm
STL
-
FRA
18h 14m
2 stops
$678Finnair
Wed, Apr 22 - Wed, Apr 29
Finnair Logo
11:30 am - 10:17 pm
FRA
-
STL
17h 47m
2 stops
Finnair Logo
12:27 pm - 8:45 am
STL
-
FRA
13h 18m
1 stop
$681Finnair
Wed, Apr 22 - Wed, Apr 29
British Airways Logo
10:40 am - 7:30 pm
FRA
-
STL
15h 50m
1 stop
British Airways Logo
12:27 pm - 8:45 am
STL
-
FRA
13h 18m
1 stop
$686British Airways
Sun, May 3 - Sun, Jun 28
British Airways Logo
10:55 am - 10:59 pm
FRA
-
STL
19h 04m
1 stop
British Airways Logo
9:40 pm - 10:20 pm
STL
-
FRA
17h 40m
1 stop
$690British Airways
Mon, Apr 27 - Sun, May 10
American Airlines Logo
9:20 am - 6:04 pm
FRA
-
STL
15h 44m
1 stop
American Airlines Logo
5:21 pm - 10:20 pm
STL
-
FRA
21h 59m
2 stops
$692American Airlines
Wed, Apr 22 - Sun, Apr 26
Multiple Airlines Logo
11:30 am - 10:17 pm
FRA
-
STL
17h 47m
2 stops
Multiple Airlines Logo
12:27 pm - 8:45 am
STL
-
FRA
13h 18m
1 stop
$694Multiple Airlines
Thu, Apr 23 - Thu, Apr 30
Multiple Airlines Logo
10:55 am - 8:54 am
FRA
-
STL
28h 59m
1 stop
Multiple Airlines Logo
7:00 am - 7:20 am
STL
-
FRA
17h 20m
1 stop
$696Multiple Airlines
Thu, Apr 23 - Thu, Apr 30
Iberia Logo
10:55 am - 10:59 pm
FRA
-
STL
19h 04m
1 stop
Iberia Logo
7:12 am - 8:45 am
STL
-
FRA
18h 33m
1 stop
$698Iberia
Sun, May 3 - Wed, May 13
American Airlines Logo
6:40 am - 4:41 pm
FRA
-
STL
17h 01m
2 stops
American Airlines Logo
11:45 am - 1:55 pm
STL
-
FRA
19h 10m
2 stops
$699American Airlines
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
11:30 am - 10:17 pm
FRA
-
STL
17h 47m
2 stops
Multiple Airlines Logo
5:21 pm - 6:35 pm
STL
-
FRA
18h 14m
2 stops
$700Multiple Airlines
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.

How much is a round-trip flight from Frankfurt am Main Airport to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Frankfurt am Main Airport to St. Louis departing in April.

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 Sundays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from St. Louis, Tuesday 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 $676 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is $1,000 and $903 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $455 on average.

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 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Expert advice

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

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

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.

Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

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.

Duncan Madden

Duncan Madden

Expert on FRA

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.

Yulia Denisyuk

Yulia Denisyuk

Expert on STL

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.

Good to know

Low seasonFebruary
Cheapest flight$453
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 7% 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 $453 for a one-way ticket and $678 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 Lufthansa?

    The two airlines most popular with KAYAK users for flights from Frankfurt am Main to St. Louis are United Airlines and Lufthansa. With an average price for the route of $852 and an overall rating of 7.4, United Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $996 and an overall rating of 6.8.

  • 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 $911 or less one-way.

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

Lufthansa

Friday

Lufthansa

Lufthansa

Sunday

Lufthansa

Lufthansa

See more direct flights

Direct returns

Lambert-St Louis to Frankfurt am Main

Wednesday

Lufthansa

Lufthansa

Friday

Lufthansa

Lufthansa

Sunday

Lufthansa

Lufthansa

See more direct flights

Reviews of the top airlines flying 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 9418 reviews
8.1Crew
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
Airline reviews

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

6.0 GoodOlga, Mar 2026
FRA - IAD
Read more United Airlines reviews

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

Poor. Crew allowed children to run around and scream and disturb passanger’s seats.

Airport terminal was outdated, flight was on a small jet with no wifi

Nothing also dont give to people that disgusting blanket and pilow.

Great other than a couple very drunk guys that for a while kept bumping my seat from behind. The staff did their best to control them. Even refused serving them alcohol and allowed the gal sitting next to them to move.

An international flight on an apron is pretty unusual in my 40 years of traveling. Departure delay. Luggage despite over an hour connection did not make it to the flight. Actually still in Germany. My luggage was not moved until I reached my final destination despite knowing it to be left in Germany upon my arrival in Chicago. The service left me a little off, both going and returning from Europe. Light on in the cabin even during a night flight and lots of traffic no matter what. Maybe passengers want more service? As a frequent traveler i just want to be able to sleep, the food will be better at the destination anyway. So since the cabin crew woke me up I asked for a cocktail, I did not get the best response although sitting in row 20 premium economy. I usually fly premium economy or business and my 2 flight to Europe in 2025 with United both had luggage delays and other minor issues. American flights to Australia, Canada and Europe went smoothly and Premium plus feels very much like business light. Is United Club becoming a waste and Silver/Gold levels another waste??

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

This flight leg was fantastic - super comfortable and a great selection of things to watch on the TV. Staff were excellent, really above and beyond.

Not enough veg food available for passengers. I actually did not get the veg food and was told it was over, and I starved the entire flight duration.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

How about changing the personal out to more friendly human beings? This team was pretty arrogant. No fun!!

It was good. The seats in economy weren’t bad

Wonderful staff. The boarding process can be improved a little better by adequate prior communication but all in all they did fine. However the boarding gate was quite unfreindly to elderly and who needs help with sevral stairs.

Bulkhead seats should not be an extra charge. They are extremely uncomfortable. And we missed our connecting flight due to slow luggage retreaval.

Not great - seats were very narrow and food was terrible.

Some of the crew was sassy and not super helpful. The food was okay, but it seems like they were all unprepared compared to my flight I did from JFK to Frankfurt

I don’t understand how they charge as much as they do for such a poor experience

I wish the plane had pod seating for business class. I had a window seat (8K) and I had to climb over the person sitting on the aisle when I needed to get up. Also there is no partition between the seats for privacy when sleeping. The Asian airlines have much nicer business class seating. Their seats are wider for better comfort when sleeping.

Bumpy ride, not Lufthansa‘s fault. Crew managed a situation over a back rest to far down well. It was two iles behind me. The person putting the seat down, against the other person’s knees, was quite rude and belligerent and needed to be told in a no nonsense matter to stopp. Male flight attendant did good job.

Booked seats (paid extra) online and found they didn’t exist on the flight. We were then separated from the rest of our party. Given seats in the very back of the plane. We will not fly Discover or Lufthansa again. We will not book flights or travel through Kayak again!

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

Information on your arrival and departure airports