$447 Find Cheap Flights from Seattle to Luxembourg

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Luxembourg departing on 10/7. 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.
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Best Luxembourg Flight Deals from Seattle

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Luxembourg
Luxembourg1 stop$447
Luxembourg
Luxembourg1 stop$447

Cheap Flight Deals from Seattle to Luxembourg (SEA-LU0)

 
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.

Recent round-trip flight deals from Seattle to Luxembourg

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Seattle to Luxembourg.
Discover the best prices for you by selecting your travel dates on KAYAK.
American Airlines Logo
1:30 pm - 8:50 pmSEA-LUX
22h 20m1 stop
American Airlines Logo
5:15 pm - 4:55 pmLUX-SEA
32h 40m1 stop
$447American Airlines
Find Deal
Tue, Oct 7 - Tue, Nov 4
American Airlines Logo
6:06 pm - 8:50 pmSEA-LUX
17h 44m2 stops
American Airlines Logo
10:15 am - 4:55 pmLUX-SEA
15h 40m1 stop
$452American Airlines
Find Deal
Tue, Oct 7 - Tue, Nov 4
American Airlines Logo
6:06 pm - 8:50 pmSEA-LUX
17h 44m2 stops
American Airlines Logo
10:15 am - 11:04 pmLUX-SEA
21h 49m2 stops
$462American Airlines
Find Deal
Tue, Oct 7 - Tue, Nov 4
British Airways Logo
1:30 pm - 9:20 pmSEA-LUX
22h 50m1 stop
British Airways Logo
9:35 pm - 11:35 amLUX-SEA
23h 00m1 stop
$643British Airways
Find Deal
Mon, May 19 - Wed, May 28
British Airways Logo
1:30 pm - 9:20 pmSEA-LUX
22h 50m1 stop
British Airways Logo
9:35 pm - 5:28 pmLUX-SEA
28h 53m2 stops
$653British Airways
Find Deal
Mon, May 19 - Wed, May 28
Lufthansa Logo
6:50 pm - 7:35 pmSEA-LUX
15h 45m1 stop
Lufthansa Logo
8:15 am - 2:16 pmLUX-SEA
15h 01m2 stops
$808Lufthansa
Find Deal
Wed, Jun 11 - Wed, Jun 18
Delta Logo
7:50 am - 10:00 amSEA-LUX
17h 10m2 stops
Delta Logo
6:10 am - 3:55 pmLUX-SEA
18h 45m1 stop
$861Delta
Find Deal
Thu, Jun 12 - Thu, Jun 19
Lufthansa Logo
10:00 am - 10:00 amSEA-LUX
15h 00m2 stops
Lufthansa Logo
8:15 am - 12:25 pmLUX-SEA
13h 10m1 stop
$868Lufthansa
Find Deal
Thu, Jun 12 - Thu, Jun 19
Delta Logo
7:50 am - 10:00 amSEA-LUX
17h 10m2 stops
Delta Logo
10:30 am - 8:48 pmLUX-SEA
19h 18m2 stops
$871Delta
Find Deal
Thu, Jun 12 - Thu, Jun 19
Air France Logo
10:25 am - 10:35 amSEA-LUX
15h 10m2 stops
Air France Logo
7:30 am - 5:30 pmLUX-SEA
19h 00m1 stop
$5,479Air France
Find Deal
Wed, May 21 - Wed, Jun 11
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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 November, when tickets cost $484 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,291 and $978 respectively.

What’s the cheapest day of the week to fly from Seattle to Luxembourg?

The average price of all round-trip flights from Seattle to Luxembourg clicked on KAYAK for each day over the last 12 months.

For Seattle to Luxembourg, Wednesday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Luxembourg back to Seattle, the best deals are generally found on Sunday, with Tuesday being the most expensive.


Good to know

Low seasonJanuary
High seasonApril
Cheapest flight$447
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 2% 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.

  • What is the cheapest time of day to fly to Luxembourg?

    The cheapest time of day to fly to Luxembourg is generally at night, when round-trip flights cost $554 on average. Morning departures are around 13% cheaper than evening flights, on average. The most expensive time of day to fly to Luxembourg is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $730.

Top 5 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.
8.0
DeltaOverall score based on 7934 reviews
7.9Entertainment
7.3Food
8.5Crew
7.9Comfort
8.2Boarding
Airline reviews

Our bag was lost so that made unnecessary chaos On our trip

6.0 GoodBarbara, Apr 2025JFK - FCO
Read more Delta reviews

Our bag was lost so that made unnecessary chaos On our trip

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

It was an overnight flight and I desperately needed coffee before we landed, but Delta does only one beverage service, and that is shortly after takeoff, not before landing at 5 am.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Great boarding, great short flight but no entertainment whatsoever and no wifi. Prepare to disembark by a staircase.

Great boarding, great short flight but no entertainment whatsoever. It was supposed to have wifi but that did not work.

Transfer at CDG to connecting KLM flight to Amsterdam was a NIGHTMARE. LONG WALKWAYS, NO MOVING WALKWAYS, POOR signage, Have to take a train & No staff visible to help navigate the maze. AVOID TRANSFER AT CDG AT ALL COST.

My experience was good overall, the quality of the food really decreased! There used to be a choice between meat and fish now it’s between chicken and pasta! In the choices of entertainment meditation has been added which is very good. Soft chair workout to improve blood circulation and avoid phlebitis should be added.

The only reason the overall rating wasn't "excellent" was due to problems in claiming luggage. The bags are delivered to the main area (Cinta 35) for domestic passengers, but to a DIFFERENT ROOM for international arrivees. After waiting 30 minutes, someone (who didn't appear to be from Air France or the airport) told us to go to another area. There we found our bags, which appeared to have been awaiting us for a while. We had to go through a bag check before leaving the airport. If we had been alerted to this possibility, or better yet, been to go directly to Cinta 34, we could have eliminated quite a bit of waiting.

Much better than the major US Carriers especially in Biz Class.

I wish that the meal included a vegetable or even a salad instead of couscous! Why serve chicken with rice AND couscous? Service was good overall though a bit lacking in friendliness. Usually on air france I've been offered a glass of champagne before dinner, wine with dinner, and a digestif after dinner. We were only offered wine this time!

My wife and I had a row to ourselves after moving seats. There were no TVs and you had to buy food. So we did nothing but had a quick nap. Flight was fine.

The male attended that served are section was a snob. He did not answer my call light when my wine spilled all over the floor. I did not push it again or drew his attention to it. He just ignored the call light when he came to give us our meal, serving the people behind us first. I did not push it again or drew his attention to it to see his reaction. It was so obvious that he was ignoring us. We were in premium economy!

The plane was old Only 3 bathrooms available for economy The entertainment was old and the selection was poor

Georgian Airways check in staff initially denied us, because they thought passengers required transit visas to transfer on connecting flights. This required 70 minutes for them to call multiple people to confirm how transfers worked. They did not apologize once accepting our check in. Onboard, the four hour flight gave stale bread with spam slices as lunch. The only included drinks were still or sparkling water.

I did not get my baggage at my final destination..poor coordination with connecting flights with partner airlines (Saudi airways). Also the food was very mediocre.

Not a good one this time. The absence of internet without any information/notification ahead was really the unacceptable part. Also this new A350-900 has a serious legroom challenge for economy seats. It’s more like a medium-haul flight legroom configuration.

The row of seats were so cramped it was difficult to get in and out of your seat. I even upgraded. A long flight and sad accommodations 😵‍💫 the shorter flight was very comfortable and the seating was spacious

I bought a ticket and paid for for our luggage but I had to pay for my luggage again. I’m so disappointed! We had a 30 min delay and because of that we missed our connecting flight and were told that we would be on the next flight (9am flight ) but we were landed we were booked at 12pm flight. I had a little baby w me, it was very stressful. I begged to leave at 10 am at least. I was emailed that we get a voucher but they didn’t work when we were at a breakfast store. I’ve been always happy w Lufthansa but this time was awful.

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

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.

My flight was late from US to Frankfurt so I missed my connecting flight flight and I had to wait for long to catch the next flight which was very tiring. Otherwise everyone was very nice.

It would have been nice if my luggage had made it onto my connecting flight as well. Now I have to wait for my luggage to be delivered and that might take a while, which certainly put a damper on the entire experience.

Crew was not happy. Very uncomfortable seats. When person leans back in front of you the screen is too close to me. Food was awful.

They lost my luggage and despite all follow ups through emails and phone calls they don’t give me an update

Everything went really well. Snacks could be better and there was no tea/coffee service after dinner. Crew was helpful and friendly.

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

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

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.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

The food was pathetic. There wasn't much leg room and recline space for such a long flight. No tea/ coffee for a 2-3 hour connecting flight without purchasing! Really!?

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