FRA - STL

$550 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 9/24. 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

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

 
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.

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Frankfurt am Main to St. Louis.
Discover the best prices for you by selecting your travel dates on KAYAK.
Air Canada Logo
9:55 am - 7:58 pmFRA-STL
17h 03m1 stop
Air Canada Logo
1:30 pm - 11:00 amSTL-FRA
14h 30m1 stop
$579Air Canada
Find Deal
Mon, Jun 16 - Mon, Jun 30
Air Canada Logo
2:20 pm - 7:58 pmFRA-STL
12h 38m1 stop
Air Canada Logo
1:30 pm - 8:10 amSTL-FRA
11h 40m1 stop
$584Air Canada
Find Deal
Thu, May 15 - Wed, May 28
United Airlines Logo
9:55 am - 7:58 pmFRA-STL
17h 03m1 stop
United Airlines Logo
1:30 pm - 11:05 amSTL-FRA
14h 35m2 stops
$592United Airlines
Find Deal
Wed, Jun 25 - Fri, Jul 4
United Airlines Logo
9:55 am - 7:58 pmFRA-STL
17h 03m1 stop
United Airlines Logo
8:00 am - 12:05 pmSTL-FRA
21h 05m2 stops
$594United Airlines
Find Deal
Fri, Jun 6 - Mon, Jun 30
American Airlines Logo
10:45 am - 8:50 amFRA-STL
29h 05m1 stop
American Airlines Logo
4:39 pm - 3:30 pmSTL-FRA
15h 51m2 stops
$596American Airlines
Find Deal
Wed, Sep 17 - Mon, Nov 24
Lufthansa Logo
10:40 am - 1:30 pmFRA-STL
9h 50mnonstop
Lufthansa Logo
12:24 pm - 10:05 amSTL-FRA
14h 41m2 stops
$604Lufthansa
Find Deal
Fri, Sep 19 - Mon, Nov 24
American Airlines Logo
9:20 am - 4:39 pmFRA-STL
38h 19m2 stops
American Airlines Logo
4:58 pm - 6:15 pmSTL-FRA
18h 17m2 stops
$608American Airlines
Find Deal
Sun, Jun 22 - Wed, Jul 2
Lufthansa Logo
12:40 pm - 9:32 pmFRA-STL
15h 52m1 stop
Lufthansa Logo
1:27 pm - 12:05 pmSTL-FRA
15h 38m2 stops
$609Lufthansa
Find Deal
Mon, Sep 22 - Thu, Nov 20
British Airways Logo
6:40 am - 8:16 pmFRA-STL
20h 36m2 stops
British Airways Logo
4:52 pm - 6:50 pmSTL-FRA
18h 58m2 stops
$619British Airways
Find Deal
Sat, Aug 30 - Sat, Sep 20
British Airways Logo
6:35 am - 3:44 pmFRA-STL
16h 09m2 stops
British Airways Logo
5:56 pm - 9:30 amSTL-FRA
32h 34m2 stops
$651British Airways
Find Deal
Mon, Jun 23 - Sun, Jul 6
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

To avoid long queues at FRA, check in online and bring only carry-on luggage. Arrive early to navigate security and immigration smoothly.

Read more about FRAby Duncan Madden
STL

Use MetroLink for a convenient ride from STL to downtown St. Louis. The Red Line connects directly to key city areas.

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
Useful Info

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 Thursdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from St. Louis, Thursday 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 $609 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $861 and $849 respectively.

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. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$550
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 18% 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 $550 for a one-way ticket and $579 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 $712 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 $629 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 $665 or less one-way and $620 or less round-trip.

Prefer to fly direct from Frankfurt am Main to 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
See more direct flights

Top 4 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 8696 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
8.1Crew
Airline reviews

I needed to make changes to my flights. When I called customer service, they assisted me with care professionalism.

10.0 ExcellentMohammad Hassan Mirzai, May 2025HKG - SFO
Read more United Airlines reviews

I needed to make changes to my flights. When I called customer service, they assisted me with care professionalism.

Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy

A bit rush for transit. Food and entertainment are not available

So far so good but food and entertainment are not available for this flight

Multiple delays and not straight answer from the United team

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Change cabin crew assisting business class. Not taking care, ignoring requests and calls. Never had such an experience in business class.

Short flight - no food understandable. Flight was delayed for over an hour. Overall, it was good.

The flight was delayed so the people from a late connecting flight was able to still make the connection.

Pitch was very small. Knees were on the seat back in front of me.

Paid $35 and not able to access the internet at all.

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Flight was delayed bc of mechanical issue. New plane had different configuration so some seats had to be switched. They called all passengers who needed new boarding cards. They did not call us so we thought our seats were the same and fine. When we boarded they informed us our receipts had changed and we are now all sitting separate and in the back row. Both my daughters had meltdowns and started to cry and once we got on the flight, we figured out how we could sit closer to each other, but this was very upsetting.

I like the service and the efficiency. I am lactose intolerant and the lactose intolerant meal in business class was not astounding. Also, the business class fully reclining seats are not that comfortable.

Food was great but they didn't clear my meal tray for 3 hours. You'd think they could check though the cabin now and then.

Upon arriving at IAH, it was informed that the luggage had not arrived. Still waiting to hear back when it will be delivered.

I wasn’t allowed to board with my children. I was charged outrageous costs for basic carry on size luggage. The entertainment screens were outdated and not user friendly.

I was very happy with everything, thank you for the smooth flight ✈️

Entertainment system is old. Food can be tastier Need to provide toothbrush and toothpaste at least when asked.

I pre-ordered my meal and did not receive it. The seats are very old, uncomfortable and dirty. The crew was excellent and made my stay on board comfortable and enjoyable.

It was great. The airline staff was very friendly. The FRA security was a bit harsh doing their job but friendly overall.

Our flights were severely delayed, then canceled and we had to fly out next day with no sleep accommodation help. This led to our baggage being lost and the service reps after baggage couldn’t be bothered to help. They kept sending us to different counters when we were at the right counter to begin with. The only saving grace was the angel woman supervisor with blond hair who helped us put in a missing baggage claim.

The boarding system was all bogus - employees at the boarding gate were not sound like proffesional or may be possibly rational

Boarding is a mess. They never check group # so lots of people crowding in. Comfortable seats this flight. I had an empty seat next to me, very convenient. Food was really not good, but I was starved. The pizza snack thing was horrible. Crew was grand. They really make it enjoyable.

Too much long line at the TSA and Security. Prepare for long walk for baggage claim.

Crew very helpful and friendly. Food is so so. Main meal is not always the best. Did have a choice of a snack part way which was either a cookie, corn snack, or similar. Second kind of meal was basically like a pizza pastry that really wasn’t a favorite but probably a European snack? Screens and selections of movies, tv and such were good. No WI-Fi unless you buy so no free texting or such on the long flight but I think that might be any overseas flight.

The boarding process was quite loud and chaotic. The flight attendants kept barking over the PA system about people needing to only stow large items in the overhead bins. During the one and only service, I was hit by the service cart. At the same time, a passenger was returning from the bathroom and the crew definitely saw him but stopped a few seats short of allowing him to sit down before starting service and made him wait a good 10 minutes before passing his seat and allowing him to sit down, after which he had to ask for his snack and beverage or he would have been passed over. Neither flight attendant thanked passengers as they left; in fact, I did not see them again once the plane door was opened.

Flight Attendant Karen Lynn was an absolute delight. She assisted in every portion of the services provided throughout the flight, aided with any and all concerns expressed by passengers, and even helped comfort an upset child who was one of five of a traveling family. This quality of service is what keeps me coming back to American. Thank you!

The worst, flight cancelled because the aircraft was not full. Heathrow ground crew totally not helpful and arrogant. Lady proposed us flight with 40min layover instead of direct and said it is our problem of course she was unable to do anything as everything was beyond her control she claimed. after calling on hotline another flight was booked. Flight was cancelled last second so we could not take direct from Zurich but we had to stay overnight in London.

The seats in row 31 are terrible and small and uncomfortable. Don't ever sit there. The window seat is so close to the curve of the plane is so annoying. I paid extra for this seat and I hated all 10 hours in it.

Food was terrible , crew were excellent , IFE was dire . Overall comfortable seat and cabin. Nothing special .

If my tv wasn’t broken and I wasn’t in a seat that didn’t allow for sleeping

Delayed flight due to lack of crew caused me to miss my connection

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

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