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Cheap flights from Seattle to Luxembourg from $368

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Luxembourg departing on 9/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Luxembourg

Cheap round-trip flights

British Airways Logo
6:50 pm - 4:50 pmSEA-LUX
13h 00m1 stop
British Airways Logo
5:10 pm - 12:30 pmLUX-SEA
27h 20m1 stop
$440British Airways
Find Deal
Wed, Mar 4 - Mon, Mar 9
British Airways Logo
1:34 pm - 4:50 pmSEA-LUX
18h 16m2 stops
British Airways Logo
5:10 pm - 12:30 pmLUX-SEA
27h 20m1 stop
$445British Airways
Find Deal
Wed, Mar 4 - Mon, Mar 9
Logo
1:40 pm - 1:50 pmSEA-LUX
15h 10m1 stop
Logo
10:55 am - 11:50 amLUX-SEA
33h 55m1 stop
$461
Find Deal
Tue, Nov 25 - Wed, Dec 3
Delta Logo
3:00 pm - 10:25 amSEA-LUX
34h 25m1 stop
Delta Logo
6:05 am - 10:21 pmLUX-SEA
25h 16m2 stops
$480Delta
Find Deal
Tue, Nov 25 - Wed, Dec 3
Air France Logo
1:30 pm - 10:35 amSEA-LUX
12h 05m1 stop
Air France Logo
7:30 am - 2:20 pmLUX-SEA
14h 50m1 stop
$486Air France
Find Deal
Wed, Oct 22 - Wed, Oct 29
Logo
2:55 pm - 7:35 pmSEA-LUX
19h 40m2 stops
Logo
7:10 am - 9:31 amLUX-SEA
34h 21m2 stops
$502
Find Deal
Wed, Oct 22 - Wed, Oct 29
Delta Logo
5:40 pm - 5:55 pmSEA-LUX
15h 15m1 stop
Delta Logo
6:00 am - 6:24 pmLUX-SEA
20h 24m2 stops
$511Delta
Find Deal
Wed, Oct 22 - Wed, Oct 29
Air France Logo
1:30 pm - 1:50 pmSEA-LUX
15h 20m1 stop
Air France Logo
7:30 am - 2:20 pmLUX-SEA
14h 50m1 stop
$536Air France
Find Deal
Fri, Oct 17 - Wed, Oct 29
Lufthansa Logo
10:00 am - 10:00 amSEA-LUX
15h 00m2 stops
Lufthansa Logo
9:30 am - 2:20 pmLUX-SEA
12h 50m1 stop
$558Lufthansa
Find Deal
Fri, Oct 17 - Wed, Oct 29
Lufthansa Logo
2:20 pm - 1:50 pmSEA-LUX
14h 30m1 stop
Lufthansa Logo
6:15 am - 11:55 amLUX-SEA
14h 40m1 stop
$700Lufthansa
Find Deal
Tue, Sep 23 - Fri, Sep 26

British Airways flights from Seattle to Luxembourg

Our best British Airways deals on Seattle to Luxembourg flight tickets
British Airways
Mar 4
SEA6:50 pmSeattle/Tacoma Intl
13h 00m
1 stop
LUX4:50 pmLuxembourg
Mar 9
LUX5:10 pmLuxembourg
27h 20m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
$440
Find similar
British Airways
Mar 4
SEA1:34 pmSeattle/Tacoma Intl
18h 16m
2 stops
LUX4:50 pmLuxembourg
Mar 9
LUX5:10 pmLuxembourg
27h 20m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
$445
Find similar

Air France flights from Seattle to Luxembourg

Our best Air France deals on Seattle to Luxembourg flight tickets
Air France
Oct 22
SEA1:30 pmSeattle/Tacoma Intl
12h 05m
1 stop
LUX10:35 amLuxembourg
Oct 29
LUX7:30 amLuxembourg
14h 50m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
$486
Find similar
Air France
Oct 17
SEA1:30 pmSeattle/Tacoma Intl
15h 20m
1 stop
LUX1:50 pmLuxembourg
Oct 29
LUX7:30 amLuxembourg
14h 50m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
$536
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Luxembourg that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 9, 2025.
Use the filters below to find and compare flights from Seattle to Luxembourg that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 3/4

6:50 pm-4:50 pm

1 stop13h 00m

Luxembourg

Mon 3/9

5:10 pm-12:30 pm

1 stop27h 20m

$440

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 3/4

1:34 pm-4:50 pm

2 stops18h 16m

Luxembourg

Mon 3/9

5:10 pm-12:30 pm

1 stop27h 20m

$445

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 11/25

1:40 pm-1:50 pm

1 stop15h 10m

Luxembourg

Wed 12/3

10:55 am-11:50 am

1 stop33h 55m

$461

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 11/25

3:00 pm-10:25 am

1 stop34h 25m

Luxembourg

Wed 12/3

6:05 am-10:21 pm

2 stops25h 16m

$480

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 10/22

1:30 pm-10:35 am

1 stop12h 05m

Luxembourg

Wed 10/29

7:30 am-2:20 pm

1 stop14h 50m

$486

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 10/22

2:55 pm-7:35 pm

2 stops19h 40m

Luxembourg

Wed 10/29

7:10 am-9:31 am

2 stops34h 21m

$502

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 10/22

5:40 pm-5:55 pm

1 stop15h 15m

Luxembourg

Wed 10/29

6:00 am-6:24 pm

2 stops20h 24m

$511

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Fri 10/17

1:30 pm-1:50 pm

1 stop15h 20m

Luxembourg

Wed 10/29

7:30 am-2:20 pm

1 stop14h 50m

$536

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Fri 10/17

10:00 am-10:00 am

2 stops15h 00m

Luxembourg

Wed 10/29

9:30 am-2:20 pm

1 stop12h 50m

$558

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 9/23

2:20 pm-1:50 pm

1 stop14h 30m

Luxembourg

Fri 9/26

6:15 am-11:55 am

1 stop14h 40m

$700

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Luxembourg from

How to get the cheapest flight ticket from Seattle to Luxembourg

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Luxembourg?

If you are unable to visit Luxembourg during the month of August, then departing from Seattle during the month November is also very affordable. Most momondo users find prices during this month for around $484.

What is the cheapest day to depart on your flight to Luxembourg?

On average, the least expensive day to fly to Luxembourg from Seattle is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $570. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Luxembourg on Thursday is $868.

What is the cheapest time of day to depart on your flight to Luxembourg?

According to our data, the cheapest time of day to fly to Luxembourg is in the evening. momondo users have found flights departing from Seattle to Luxembourg in the evening for as low as $554. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $730.

How far in advance should I book a flight to Luxembourg?

You are more likely to see cheaper flights to Luxembourg from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Luxembourg for around $678 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Luxembourg from Seattle for as low as $349 on momondo.

Cheap Seattle to Luxembourg flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Luxembourg

Direct flights

None
There are no direct flights from Seattle to Luxembourg. There are no popular flight routes from Seattle to Luxembourg.
Search flight deals

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Luxembourg?

    Prices for flights from Seattle/Tacoma Intl Airport to Luxembourg are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Luxembourg?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Luxembourg?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Luxembourg.

  • What documentation or ID do you need to fly to Luxembourg?

    The travel and health documents you'll need for your trip to Luxembourg may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Luxembourg. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Seattle to Luxembourg

Compare and see reviews for airlines that fly from Seattle to Luxembourg with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $396Free CancellationRating
6.7
7,358 reviews
Search British Airways flights
Air FrancePriceFrom $449Free CancellationRating
7.4
1,469 reviews
Search Air France flights
DeltaPriceFrom $496Free CancellationRating
7.9
7,965 reviews
Search Delta flights
LufthansaPriceFrom $601Free CancellationRating
6.8
7,410 reviews
Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Luxembourg?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Luxembourg from Seattle.

Can I find flights from Seattle to Luxembourg with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to Luxembourg flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to Luxembourg?

momondo helps you find the best flight between Seattle and Luxembourg by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Luxembourg right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Luxembourg from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Luxembourg trip

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