SEA - LUX

$323 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 6/15. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Luxembourg

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Luxembourg, 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 Seattle to Luxembourg, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$689
Typical prices: $471-$396
British Airways
Tue 8/4Wed 8/19
SEA - LUX • 1 stop
Cheapest one-way
$323
Multiple Airlines
Mon 6/15
SEA - LUX • 3 stops
Top airlines
Cheapest • from $688 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Luxembourg. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $684 (round-trip)
Shortest trip • 12h 38m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 32% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Luxembourg!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Luxembourg (SEA-LUX)

 
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 4 - Wed, Aug 19
British Airways Logo
1:30 pm - 10:40 am
SEA
-
LUX
12h 10m
1 stop
British Airways Logo
9:35 pm - 11:35 am
LUX
-
SEA
23h 00m
1 stop
$689British Airways
Tue, Aug 4 - Wed, Aug 19
British Airways Logo
1:30 pm - 10:40 am
SEA
-
LUX
12h 10m
1 stop
British Airways Logo
11:35 am - 11:35 am
LUX
-
SEA
33h 00m
1 stop
$697British Airways
Tue, Aug 4 - Wed, Aug 19
United Airlines Logo
8:56 am - 4:10 pm
SEA
-
LUX
22h 14m
2 stops
United Airlines Logo
9:40 am - 4:59 pm
LUX
-
SEA
16h 19m
1 stop
$700United Airlines
Tue, Aug 4 - Wed, Aug 19
United Airlines Logo
8:56 am - 4:10 pm
SEA
-
LUX
22h 14m
2 stops
United Airlines Logo
9:40 am - 4:59 pm
LUX
-
SEA
16h 19m
1 stop
$701United Airlines
Tue, Aug 4 - Wed, Aug 19
United Airlines Logo
5:00 am - 4:10 pm
SEA
-
LUX
26h 10m
2 stops
United Airlines Logo
8:20 am - 8:18 pm
LUX
-
SEA
20h 58m
2 stops
$709United Airlines
Wed, Jul 8 - Thu, Jul 23
Multiple Airlines Logo
5:45 am - 4:10 pm
SEA
-
LUX
25h 25m
2 stops
Multiple Airlines Logo
9:40 am - 4:59 pm
LUX
-
SEA
16h 19m
1 stop
$828Multiple Airlines
Sun, Jul 5 - Mon, Jul 20
Multiple Airlines Logo
3:00 pm - 4:15 pm
SEA
-
LUX
16h 15m
2 stops
Multiple Airlines Logo
8:10 pm - 4:59 pm
LUX
-
SEA
29h 49m
1 stop
$838Multiple Airlines
Sun, Jul 5 - Mon, Jul 20
Lufthansa Logo
6:50 pm - 7:30 pm
SEA
-
LUX
15h 40m
1 stop
Lufthansa Logo
8:10 pm - 4:59 pm
LUX
-
SEA
29h 49m
1 stop
$860Lufthansa
Wed, Jul 8 - Thu, Jul 23
Multiple Airlines Logo
5:45 am - 4:10 pm
SEA
-
LUX
25h 25m
2 stops
Multiple Airlines Logo
8:20 am - 4:59 pm
LUX
-
SEA
17h 39m
2 stops
$861Multiple Airlines
Thu, Jun 11 - Thu, Jun 18
Multiple Airlines Logo
6:05 pm - 5:50 pm
SEA
-
LUX
14h 45m
1 stop
Multiple Airlines Logo
10:25 am - 4:00 pm
LUX
-
SEA
14h 35m
1 stop
$867Multiple 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.

How much is a round-trip flight from Seattle to Luxembourg?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Luxembourg departing in August.

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, where tickets cost $441 (return) on average. On the other hand, the most expensive months are June and October, where the average cost of round-trip tickets is $1,038 and $922 respectively.

Good to know

Low seasonFebruary
Cheapest flight$323
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly and prices are also 33% lower on average.
Flight from Seattle to Luxembourg

When to book flights from Seattle to Luxembourg

Are your dates flexible? Find out the best times to travel from Seattle 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 Seattle to Luxembourg

  • What is the cheapest flight from Seattle to Luxembourg?

    In the last 3 days, the lowest price for a flight from Seattle to Luxembourg was $323 for a one-way ticket and $688 for a round-trip.

  • Do I need a passport to fly between Seattle and Luxembourg?

    Yes, you’ll need a passport to travel to Luxembourg from Seattle.

  • Which aircraft models fly most regularly from Seattle to Luxembourg?

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

  • Which airline alliances offer flights from Seattle to Luxembourg?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Luxembourg, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Luxembourg, Air France or United Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Luxembourg are Air France and United Airlines. With an average price for the route of $523 and an overall rating of 7.4, Air France is the most popular choice. United Airlines is also a great choice for the route, with an average price of $592 and an overall rating of 7.4.

  • 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 to Luxembourg from Seattle 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 to Luxembourg with an airline and back to Seattle with another airline. Booking your flights between Seattle 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 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 to Luxembourg from Seattle 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

 
See real verified KAYAK customer reviews for airlines flying from Seattle 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 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.
7.4
Air FranceOverall score based on 1587 reviews
7.5Boarding
7.0Entertainment
7.4Comfort
8.1Crew
7.0Food
Airline reviews

The flight crew was exceptionally friendly and helpful. Also the seats were comfortable and roomier than many other airlines.

10.0 ExcellentColleen, May 2026
LIS - CDG
Read more Air France reviews

The flight crew was exceptionally friendly and helpful. Also the seats were comfortable and roomier than many other airlines.

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 :)

Middle seats SUCK!!!! I paid more money than I should have because of your terrible site Kayak.com. I'll try to use your competitors going forward. I am so disappointed you would play off business class.com as business class seats

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

They lost my bag and I still have not received it

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

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.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Friendliest Flight Attendant I’ve seen since I flew on Southwest Airlines. The whole trip was outstanding…and arrived Early!

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

I didn’t have a seat assignment and my seat was very dirty on the flight from Frankfurt to Budapest.

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

Definitely get premium economy on a flight this long if you can. Your legs and while body will thank you.

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

I upgraded to the business class cabin. It was the poorest business class I have ever experienced. No access to any business lounge in Tampa airport. Seats are not comfortable. I had a window seat and had to step/crawl over the next seat. Food was mediocre and service below average for business class. Bathroom location was ridiculous. No place to wait. I cannot believe I paid this kind of money and will never fly Lufthansa Discover again. They really should reimburse me somehow.

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

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

All the above categories was great. Seats entirely too cramped.

Flight was good but temp in the cabin was cold.

Departure was delayed leading to late arrival, 25 min wait for a gate. Basically, missed all our connections & had to be rebooted, which was a very long process.

I like American Airlines and their safety record. They provide quality service and a feel safe enough to prefer American Airlines over other carriers even if I have to pay a little more.

Good flight, no turbulence. I felt safe and comfortable which is really important when I am just a passenger.

Cancelled flight and re booked seats were a downgrade. British Airways said the upgrade was t available but when I checked it was but then they wouldn’t make it right

Someone switched seats in business class so they could sit together and we were left apart (3). Very disappointing. Staff did nothing

Somone switched seats to sit near friend causing us to be disconnected (3) business class. Very disappointed. Staff did nothing.

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

The whole experience was excellent, O can say out from Miami the best airline to travel with for any European destination. Since the ground staff to the inflight crew attention was great, service on board 10 of 10. Finally the 380 is very confortable and nice to travel.

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

Information on your arrival and departure airports