$437 Find Cheap Flights from Seattle to Luxembourg

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Luxembourg departing on 7/5. 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

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Flight Deals

Book Cheap Seattle to Luxembourg Plane Tickets

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

Tue, Aug 18 - Wed, Aug 26
Multiple Airlines Logo
6:50 pm - 4:05 pm
SEA
-
LUX
12h 15m
1 stop
Multiple Airlines Logo
10:15 am - 6:32 pm
LUX
-
SEA
17h 17m
2 stops
$689Multiple Airlines
Tue, Aug 18 - Wed, Aug 26
Multiple Airlines Logo
1:30 pm - 10:35 am
SEA
-
LUX
12h 05m
1 stop
Multiple Airlines Logo
10:30 am - 4:27 pm
LUX
-
SEA
14h 57m
1 stop
$690Multiple Airlines
Tue, Aug 18 - Wed, Aug 26
Multiple Airlines Logo
1:30 pm - 10:35 am
SEA
-
LUX
12h 05m
1 stop
Multiple Airlines Logo
10:30 am - 4:27 pm
LUX
-
SEA
14h 57m
1 stop
$691Multiple Airlines
Tue, Aug 18 - Wed, Aug 26
Lufthansa Logo
6:50 pm - 4:05 pm
SEA
-
LUX
12h 15m
1 stop
Lufthansa Logo
6:25 am - 11:55 am
LUX
-
SEA
14h 30m
1 stop
$692Lufthansa
Tue, Aug 18 - Wed, Aug 26
United Airlines Logo
6:50 pm - 4:05 pm
SEA
-
LUX
12h 15m
1 stop
United Airlines Logo
8:20 am - 11:55 am
LUX
-
SEA
12h 35m
1 stop
$693United Airlines
Tue, Aug 18 - Wed, Aug 26
Multiple Airlines Logo
5:50 am - 1:35 pm
SEA
-
LUX
22h 45m
2 stops
Multiple Airlines Logo
8:20 am - 11:55 am
LUX
-
SEA
12h 35m
1 stop
$694Multiple Airlines
Tue, Aug 18 - Wed, Aug 26
Multiple Airlines Logo
5:50 am - 1:35 pm
SEA
-
LUX
22h 45m
2 stops
Multiple Airlines Logo
8:20 am - 11:55 am
LUX
-
SEA
12h 35m
1 stop
$695Multiple Airlines
Tue, Aug 18 - Wed, Aug 26
Air Canada Logo
10:45 am - 1:35 pm
SEA
-
LUX
17h 50m
2 stops
Air Canada Logo
10:15 am - 10:07 am
LUX
-
SEA
32h 52m
2 stops
$697Air Canada
Tue, Aug 18 - Wed, Aug 26
United Airlines Logo
5:00 am - 4:05 pm
SEA
-
LUX
26h 05m
2 stops
United Airlines Logo
8:20 am - 11:55 am
LUX
-
SEA
12h 35m
1 stop
$698United Airlines
Tue, Aug 18 - Wed, Aug 26
United Airlines Logo
6:50 pm - 4:05 pm
SEA
-
LUX
12h 15m
1 stop
United Airlines Logo
8:20 am - 11:26 pm
LUX
-
SEA
24h 06m
3 stops
$703United Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Luxembourg flights

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

What is the cheapest month to fly from Seattle to Luxembourg?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Luxembourg, 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 Seattle to Luxembourg is August, when tickets cost $306 (return) on average. On the other hand, the most expensive months are June and January, when the average cost of round-trip tickets is $840 and $723 respectively.

Good to know

Low seasonFebruary
Cheapest flight$437
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 33% lower on average.
Flight from Seattle to Luxembourg

FAQs - booking Luxembourg flights

  • How does KAYAK find such low prices on flights from Seattle 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 Seattle to Luxembourg.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to Luxembourg 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 Seattle 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 from Seattle to Luxembourg with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle 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 from Seattle to Luxembourg up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Seattle to Luxembourg

 
Need help choosing which airline to fly with from Seattle 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.
7.5
Air FranceOverall score based on 1611 reviews
7.0Entertainment
7.5Boarding
7.4Comfort
7.0Food
8.2Crew
Airline reviews

Seats! The eternal problem in economy. They are like stones!!

6.0 GoodJuan G, Jun 2026
IAD - CDG
Read more Air France reviews

Seats! The eternal problem in economy. They are like stones!!

Everything is good except the seats are tightened no rooms for the legs,

The plane's pilots, including the captain himself, thanked me for the flight. I know it's just marketing, but it was really nice to see these people. It's a great idea. Airplane food is never "good," but the entire crew and flight organization were top-notch. I really liked Delta, and I think I've traveled all over the world, and that was something new for me. Maybe even the old planes, the B767, but next time I have a choice, Delta will be my first choice. Thank you, a satisfied passenger :)

The boarding was efficient. The entertainment system was a bit unstable but Air France has a good selection of movies.

They lost my bag and I still haven’t received it yet

Not consistent with the food quality (I mean taste not freshness)

Safe and stable made me sleepy and I slept and dreamt 😂😂😂😂

Food was really mediocre for premium economy in comparison to other airlines… the crew was nowhere to be found… 14 hour flight…

I don’t like that an equipment change caused my seat to change from 23A to 44A. The boarding was also delayed. The crew were excellent, however and very attentive. The food was not bad.

Worst airlines either. First leg was delayed because of crew not available. My connection was missed so they booked me automatically the next day! But, impossible to get anyone on site, web site does not let me access my reservation anymore, confirmed by useless agents over the phone. My 2-leg trip with part in business class arriving at 4:10pm ends up in an awful 3-leg arriving at 9pm the next day with no way to even choose the seats and of course at the very end of the plane. I can understand problems arrive but the way Air France handle it is just unacceptable. You are on your own. Apparently getting you to your destination is the only thing they consider their duty. The customer experience and fatigue is none of their concern. And I have a status with them. I will reconsider my priorities when flying with Air France and encourage everyone to do the same.

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

We used Kayak to reserve our tickets and specifically checked the luggage option which was a more expensive option. When we arrived at the terminal we had to pay an extra $90 per suitcase for the three passengers. This has been a pattern for the past 3 years. Why charge for a more expensive luggage option, and the ticket price not include luggage?

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airline tickets are not cheap. You expect reliable competent service. Thanks to canceled flights and botched transfers we arrived at our destination two days late. This is not acceptable

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

The entertainment they offer could use some games, and maybe they could add some cookies to the snack menu. And the automated messages are a bit repetitive. But it was comfortable temperature wise and the seats were comfortable. The crew is very polite and helpful

The flight was cancelled, so why are you asking me how the flight was?

We sat in our seats on the tarmac for almost 3 hours due to storms. They would not give us water or a snack. We were to depart at 7.30 pm and it was about 10.30 when we took off. No dinner until much after that. Beef type noodle dish was terrible with about a teaspoon of beef in it. The breakfast sweet waffle with egg and sausage inside was horrible. An English muffin sandwich would have been much better. Food was the worst in all of our years of traveling the world.

Our screen kept turning off ...3 times...had to get crew attention to turn it on again

They messed up my seat so I didn’t get the one I paid for

Put me on standby; flight was late; missed my connecting flight; disaster

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Very few things and/or people are excellent. It was very good.

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

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.

In my first flight with Air Canada we sat in the plane for 4:00pm to 6:30pm. Finally we were asked to get off the plane and we were told the flight was cancelled after 7:00pm There was o clear explanation of what was the problem. I was booked without my permission on a Delta Flight at 7:30pm that was leaving at 8:00pm and I still had to go get my luggage(my final destination was Rome with one stop in Toronto. The luggage claim for Canada was closed so had to return to finally get it on the luggage belt.. Of course I missed the Delta flight and all the next day flights were booked. I also lost what I paid for my stay in Rome because I did nt cancel in time. A complete nightmare.

Thanks to a delay of an hour of my flight to Philadelphia on American Airlines I missed my connecting flight to Amsterdam. On arrival at Philadelphia he crew on the delayed flight did not ask the passengers to let connecting passengers get off first and I arrived a few minutes after boarding was closed at the original time for the flight to AMS, this despite the fact that I had received a message from American Airlines that departure was delayed by 25 minutes. Overall very poor service, no effort from the part of American Airlines to accommodate the passenger, just rebook the flight for the next day.

It's hard to tell where to plug in electronics, and the port on my seat didn't work. Their entertainment system was down. Vegetarian food options were tasty. Friendly, helpful flight attendants.

Boarding process was chaotic. Confusion over Boarding gates: gate 55 or gate 56 ???. Unnecessary standing in long lines to board. Better to call out Boarding groups one at a time and everyone else to sit. Airline only has 2 Boarding groups 1-3 and 4-9. That causes over crowding and chaos

Lady next to me was coughing profusely the entire flight, other lady moved seats because of it, 8 hours of that during an overnight flight is a bit much.

The flight was ok. The seats are so small. The free wifi for members was not an option on this flight. The one flight attendant, older woman with straight white/grey hair, was very rude. The gentleman next to me asked about the wifi since he was a member as well. He stated, accurately, that the option to enter the idea number was not available. Her response was, "I don't know what to tell you" and walked away from him. The rest of the staff was wonderful. I asked another flight attendant about the wifi, she said the free wifi was not enabled on that flight (true or not- at least she was friendly). It was also pretty dirty. When I opened the tray table it had mushed crumbs and there was a dirty used pair of ear buds in my seat pocket. Lastly the air vent above my head was working but stuck so I was unable to move it to face me when it got warm. I fly American often but this really was not a great flight.

My luggage was lost at the airport but American Airlines contacted me and got it to me the next day.

24 hour delays aren’t even heard in 3rd world countries with archaic transportation systems. I’m never flying American Airlines again.

3.5 hr delay leaving Pittsburgh, notifications for which were incomplete and untimely. Connecting flight was automatically switched to one requiring more than a 30 hour layover! After waiting in a long queue, customer service reduced layover to 11 hours and also set up an earlier standby. The standby had empty seats, but the gate agent couldn't change our tickets! On top of all that my luggage was lost and has yet to even be located, much less returned 5 (FIVE!) days later. Too bad there's no rating below poor.

Canceled flight late London to Florence. Help at airport very poor. Treated poorly. Had to sleep in the airport. Lost bags- still do not have them. Horrible. I should be reimbursed!

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Everything you need to know for your flight from Seattle to Luxembourg

Information on your arrival and departure airports