STL - LUX

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1 adult, Economy, 0 bags

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Everything you should know

Nonstop flights
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There are currently no direct flights between St. Louis and Luxembourg. You'll need at least 1 connection.
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Flight Deals
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Flight Deals

Cheap Flights from St. Louis to Luxembourg (STL-LUX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Luxembourg 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 St. Louis to Luxembourg

Multiple Airlines Logo
STL  St. Louis Lambert Airport-LUX Luxembourg Airport
4504 mimulti-stop
Multiple Airlines Logo
LUX  Luxembourg Airport-STL St. Louis Lambert Airport
4504 mimulti-stop
Multiple Airlines
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KAYAK's insights & trends for St. Louis to Luxembourg flights

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

How long does a flight from St. Louis to Luxembourg take?

There are no direct flights for this route. The shortest travel duration to get to Luxembourg from St. Louis is 10h 45m.

When to book flights from St. Louis to Luxembourg

Are your dates flexible? Find out the best times to travel from St. Louis to Luxembourg 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 flights from St. Louis to Luxembourg

  • Do I need a passport to fly between St. Louis and Luxembourg?

    A passport is required to fly from St. Louis to Luxembourg.

  • Which aircraft models fly most regularly from St. Louis to Luxembourg?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Luxembourg?

    Star Alliance is the only airline alliance operating flights between St. Louis and Luxembourg.

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

    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 St. Louis to Luxembourg.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Luxembourg from St. Louis 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 St. Louis to Luxembourg?

    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 Luxembourg with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and LUX 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 St. Louis to Luxembourg?

    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 Luxembourg from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from St. Louis to Luxembourg

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Luxembourg. 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 St. Louis to Luxembourg? 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.
6.8
LufthansaOverall score based on 8176 reviews
7.0Boarding
7.6Crew
6.8Comfort
6.3Food
6.5Entertainment
Airline reviews

The crew could deploy more customer focus and not frown when asked a question. I’m speaking of one lady in particular who raised a hand in my face for me to wait whe I tried to ask a question and never came back to me. Very unprofessional and rude.

10.0 ExcellentRebecca, Jul 2026
Read more Lufthansa reviews

The crew could deploy more customer focus and not frown when asked a question. I’m speaking of one lady in particular who raised a hand in my face for me to wait whe I tried to ask a question and never came back to me. Very unprofessional and rude.

They set someone on our assigned seats and we ended up finding seats for ourselves to ensure the family sits together.

Very efficient and excellent service. Nice amenities and beautiful plane. Elevated meals. Boarding could have been more organized. We missed our connecting flight due to EU entry but Lufthansa was extremely quick to rebook us.

Perfect airline, super friendly, great service, tasty food. Would fly again.

The flight was delayed more than 1.5 hours. Phone calls to united did not satisfy our need to get to Chicago to met family for fight to europe. I was told the flight was booked thru luftansa and united could not make adjustments. When call luftansa they were unaware of the significant delay on the united flight out of mci. They would not authorize a flight change. We went to the airport, as if we would be flying as scheduled, United checked us in, as if our flight would leave as scheduled. We took our bag to be checked to the baggage drop and the agent their confirmed our flight was significantly delayed. She worked for 30 min to get us on another flight. We ended up flying to Denver then to Munich. The rest of the family that flew to Chicago for our meet up and flight to Europe ended up flying to Munich alone. We meet up in Munich for our last leg to luxembourg. In luxembourg we learned on bag was scheduled on our delayed flight. The flight was canceled and we did not receive the bag in lux. We filed a lost back claim. Now 3 days later we STILL do not have the bag. It is apparently in luxembourg and they maybe tried to deliver, however the names on the door of the air b&b do not match the name on the baggage claim so the French speaking delivery person called no one could understand him so he took the bag and left. My brother, traveling with me under a different reservation , has been without essentials for 3 days. One or all of us has stayed "home" each day waiting on the bag. Today was my turn. Delivery window was 10:30 to 2:30. No attempt to knock or ring bell. After the hang up call, my brother called me and told me to check the door. There was nothing there. No sign of attempted delivery, no delivery man, nothing. Being unable to change clothes and having family members take turns waiting on a bag that never comes has ruined this family vacation. Thanks United/Luftansa

The flight left an hour late and no explanation. Food was basically a few snacks out of bags and tiny cup of soda. Crew was pretty friendly.

Absolutely horrific. Not only did the plane not board until AFTER it was supposed to have arrived in Luxembourg, but at the VERY last minute they announced that they would have to bump 10 people from the flight. Of course our family of 4 (trying to make it to Luxembourg to see my children’s 86 yo grandmother for Christmas) was bumped. There were 4 staff members, only one of which was even remotely trying to answer questions or get people on another flight. The reason they bumped us was bc a crew member was sick so instead of 110 passengers they could only take 100. This seemed ridiculous for a 30 minute flight where nothing is served anyway(!!?) They told us they could only book us on a Lufthansa flight at 1pm, but that there were no seats guaranteed. They also told us we would get a €250/person voucher for our troubles. They then gave us a link to a website to get those vouchers. When we got to the gate, the Lufthansa crew said that the flight was already overbooked and it was very unlikely that we would get on board. When asked if we could get our luggage and rent a car instead, they said it would take at least 2-3 hours to get our luggage. When we finally were allowed on the flight at the very last minute, we arrived in Luxembourg and none of our luggage (5 bags) with all of our Christmas presents and clothes/toiletries for the week made it to Luxembourg. Oh, and the link to get the vouchers doesn’t work….I think Air Dolomiti has a lot to answer for. I will be sure to avoid them at all cost in the future. I would recommend that companies like Kayak should use more professional air lines.

The The check in process was terrible on both ends. It was not clear if we should use the United, Lufthansa, or Aragrant number. It took over an hour to check in on the front end – and then at return the Lufthansa online check in failed multiple times and only after two calls to their phone number could we accomplish the task. The link to the Kayak site provided no access for check in. This difficulty and ambiguity on both ends will affect our interest in using Kayak for foreign travel in the future.

You lost my bag then waiting on the phone for 30 mins for customer service just to be directed to call another number

Boarding staff, crew and food needs a lot of improvement!! It was awful Aircraft was old with minimal legspace

Everything you need to know for your flight from St. Louis to Luxembourg

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