$361 Find Cheap Flights from Denver to Luxembourg - Compare and Save

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Price, demand and travel trends for Denver to Luxembourg flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Denver to Luxembourg right now?

The cheapest fare from Denver to Luxembourg in the last week was $745 round-trip, to Luxembourg (LUX).

Which airport in Luxembourg is the cheapest to fly to from Denver?

All flights from Denver to Luxembourg arrive at Luxembourg (LUX). On average, round-trip fares are around $740.

What’s the cheapest day to fly from Denver to Luxembourg?

Wednesday tends to be the cheapest day to fly from Denver to Luxembourg, while Friday is the most expensive. Fares run about 57% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Denver to Luxembourg?

Data from the past 12 months shows it's cheapest to fly to Luxembourg during the morning with average prices of $575. The afternoon is the most expensive time to fly, with average prices of $870.

Key details for Denver to Luxembourg flights

Low season

January

Cheapest flight

$393
Beat the crowds with an average 44% drop in travelers.
The most popular month to fly with an average 43% increase in travelers.
One-way flight from Denver to Luxembourg

Your Denver to Luxembourg flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Denver to Luxembourg?

    Fares from Denver to Luxembourg are around their usual level right now. A round-trip under $587 is considered a good deal, so it's worth keeping an eye out, or setting a Price Alert to catch price changes.

  • How much should I budget for a flight from Denver to Luxembourg?

    Over the past 12 months, round-trip fares from Denver to Luxembourg have ranged from $587 to $979.

  • What are the main airports serving Luxembourg?

    Flights to Luxembourg all arrive at Luxembourg (LUX).

  • What airlines fly nonstop from Denver to Luxembourg?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Denver to Luxembourg. One-stop options include:

    • United Airlines
    • Lufthansa
    • British Airways

  • Which cabin classes are available on flights from Denver to Luxembourg?

    On flights from Denver to Luxembourg you can only book Economy Class.

  • What are some popular landmarks in Luxembourg?

    KAYAK travelers' favorite landmarks in Luxembourg include:

    • Place Guillaume II
    • Place de la Constitution
    • Luxembourg City Municipal Park
    • Abtei Neimënster

Your guide to booking Denver to Luxembourg flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for April when flights are typically cheapest and avoid May when prices are at their highest.
  • Flying on Wednesday is usually the cheapest. Flights on Friday cost about 57% more on average, so being flexible with your travel dates could help you save.
  • Start your trip in Luxembourg, which is the most popular destination in Luxembourg. From there, it's easy to continue on to other popular destinations such as Senningerberg, Clervaux and Esch-sur-Alzette.

Reviews of the top airlines flying from Denver to Luxembourg

 
Need help choosing which airline to fly with from Denver 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 8278 reviews
6.8Comfort
6.3Food
6.5Entertainment
7.6Crew
7.0Boarding
Airline reviews

The tv and remote didn’t work. The plug to charge our phone didn’t work.

6.0 GoodJody, Aug 2026
Read more Lufthansa reviews

The tv and remote didn’t work. The plug to charge our phone didn’t work.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

Very good, i got two seats for myself, and was comfortable with the blanket i got

Food is too little (in volume) and too spicy.. There are no snacks in the back of the plane in between meals.

We had a 1 1/2 hour delay before we left Denver. When we arrive to Frankfort, they didn’t announce that people with connecting flights to exit the plane first. My next flight was already boarding when we we taxiing in to the gate. I waited another 10 minutes to get off the plane. I had to run to catch my next flight. I mean run! I made it with one minute to spare, but my luggage did not. My luggage came two hours later on a different flight.

Both flights were delayed and we missed our connection. Our second flight was delayed 3 times. I have always had great service and never any problems with my flights on Lufthansa. My last two flights were, unfortunately, awful. I fly quite often to Germany and have had better luck with United than Lufthansa.

Excellent staff and flight experience. Would rather that I had upgraded to Premium Economy for extra space, but I will know to do it next time.

It was my first experience in business class. It was everything I expected and more. Service was impeccable, food was delicious and I felt rested once I arrived to London

Sorry, I’m not a fan of United. The seats are just too cramped and uncomfortable if you are traveling very far.

Zero legroom or space in economy. Flight was delayed into Munich causing a missed connecting flight and other missed bookings. :(

It was my experience w Kayak that was negative. I’m never using kayak again

Work being done at DIA made it difficult to find BA desk.

I’ve never been on a trans-Atlantic (or Pacific) flight where the seats don’t recline—not even a little. I asked my seat mate when BA starting doing this and he said “Oh, a few years ago.” I couldn’t sleep, with my head falling forward waking me continuously, and came off the plane incredibly stiff. I booked a Premium Economy seat to get a more comfortable seat, which was worse than most basic Economy seats I’ve ever booked.

The gate agent made me check my carry-on in Denver, even though I've traveled all over taking this case on the plane. Beware folks. Food in Premium Economy was quite good - excellent blanket! Flight attendants on the Heathrow-to-Budapest flight on 3-27-2026 were quite snappy. I got a frown when asked to unscrew the water bottle cap for me (I had a cast on my right arm). Also woke up right when they were handing out biscuits. She had given my rowmates one and was in the process of giving water when I asked for a biscuit. She scolded me and said, "You snooze, you lose". She did give me one, but I thought that comment was uncalled for.

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

Flight was delayed. Though I checked in with BA live chat three times, our special meals were not provided.

Was 3 hrs delayed and my poor friend I met in Barcelona was waiting at airport for 3 hrs. Dallas airport was awful

Late in leaving the US. Late in arriving in UK. 2 plua hous on ground in UK before leaving. Late in arriving in Spain. Didn't get our bags until the next night.

Comfortable, pleasant staff, quiet, good entertainment, food, drinks. Better than American (flight back) when we were crammed in and staff sometimes indifferent.

More options for your flight from Denver to Luxembourg

Complete your trip to Luxembourg with a hotel stay or car rental