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Cheap flights from Seattle to Luxembourg from $445

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Luxembourg departing on 2/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Luxembourg

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:05 am - 4:20 pm
SEA
-
LUX
21h 15m2 stops
Multiple Airlines Logo
9:30 am - 7:16 pm
LUX
-
SEA
18h 46m2 stops
$445Multiple Airlines
Tue, Feb 3 - Tue, Feb 10
Lufthansa Logo
3:10 pm - 4:20 pm
SEA
-
LUX
16h 10m1 stop
Lufthansa Logo
6:25 am - 12:20 pm
LUX
-
SEA
14h 55m1 stop
$469Lufthansa
Sun, Mar 1 - Wed, May 13
Multiple Airlines Logo
1:40 pm - 10:35 am
SEA
-
LUX
11h 55m1 stop
Multiple Airlines Logo
10:55 am - 11:40 am
LUX
-
SEA
33h 45m1 stop
$472Multiple Airlines
Tue, Feb 3 - Tue, Feb 10
Lufthansa Logo
3:10 pm - 4:20 pm
SEA
-
LUX
16h 10m1 stop
Lufthansa Logo
6:25 am - 7:00 pm
LUX
-
SEA
21h 35m2 stops
$474Lufthansa
Sun, Mar 1 - Wed, May 13
Multiple Airlines Logo
9:25 am - 10:35 am
SEA
-
LUX
16h 10m2 stops
Multiple Airlines Logo
10:55 am - 11:40 am
LUX
-
SEA
33h 45m1 stop
$476Multiple Airlines
Tue, Feb 3 - Tue, Feb 10
Delta Logo
3:10 pm - 5:50 pm
SEA
-
LUX
17h 40m1 stop
Delta Logo
6:00 am - 11:50 am
LUX
-
SEA
14h 50m1 stop
$478Delta
Sun, Jan 18 - Sat, Jan 31
Lufthansa Logo
3:40 pm - 1:55 pm
SEA
-
LUX
37h 15m2 stops
Lufthansa Logo
6:25 am - 10:42 pm
LUX
-
SEA
25h 17m2 stops
$480Lufthansa
Sun, Mar 1 - Wed, May 13
Multiple Airlines Logo
12:35 pm - 6:15 pm
SEA
-
LUX
20h 40m2 stops
Multiple Airlines Logo
10:50 am - 10:16 pm
LUX
-
SEA
20h 26m2 stops
$482Multiple Airlines
Sun, Jan 18 - Sat, Jan 31
Delta Logo
5:25 am - 5:50 pm
SEA
-
LUX
27h 25m2 stops
Delta Logo
6:00 am - 4:51 pm
LUX
-
SEA
19h 51m2 stops
$483Delta
Sun, Jan 18 - Sat, Jan 31
United Airlines Logo
8:40 am - 4:20 pm
SEA
-
LUX
22h 40m3 stops
United Airlines Logo
9:30 am - 11:30 am
LUX
-
SEA
35h 00m2 stops
$489United Airlines
Tue, Feb 3 - Tue, Feb 10

Lufthansa flights from Seattle to Luxembourg

Our best Lufthansa deals on Seattle to Luxembourg flight tickets
Lufthansa
Mar 1
SEA3:10 pmSeattle/Tacoma Intl
16h 10m
1 stop
LUX4:20 pmLuxembourg
May 13
LUX6:25 amLuxembourg
14h 55m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$469
Find similar
Lufthansa
Mar 1
SEA3:10 pmSeattle/Tacoma Intl
16h 10m
1 stop
LUX4:20 pmLuxembourg
May 13
LUX6:25 amLuxembourg
21h 35m
2 stops
SEA7:00 pmSeattle/Tacoma Intl
$474
Find similar
Lufthansa
Mar 1
SEA3:40 pmSeattle/Tacoma Intl
37h 15m
2 stops
LUX1:55 pmLuxembourg
May 13
LUX6:25 amLuxembourg
25h 17m
2 stops
SEA10:42 pmSeattle/Tacoma Intl
$480
Find similar

Delta flights from Seattle to Luxembourg

Our best Delta deals on Seattle to Luxembourg flight tickets
Delta
Jan 18
SEA3:10 pmSeattle/Tacoma Intl
17h 40m
1 stop
LUX5:50 pmLuxembourg
Jan 31
LUX6:00 amLuxembourg
14h 50m
1 stop
SEA11:50 amSeattle/Tacoma Intl
$478
Find similar
Delta
Jan 18
SEA5:25 amSeattle/Tacoma Intl
27h 25m
2 stops
LUX5:50 pmLuxembourg
Jan 31
LUX6:00 amLuxembourg
19h 51m
2 stops
SEA4:51 pmSeattle/Tacoma Intl
$483
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 December 22, 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

Tue 2/3

10:05 am-4:20 pm

2 stops21h 15m

Luxembourg

Tue 2/10

9:30 am-7:16 pm

2 stops18h 46m

$445

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 3/1

3:10 pm-4:20 pm

1 stop16h 10m

Luxembourg

Wed 5/13

6:25 am-12:20 pm

1 stop14h 55m

$469

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 2/3

1:40 pm-10:35 am

1 stop11h 55m

Luxembourg

Tue 2/10

10:55 am-11:40 am

1 stop33h 45m

$472

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 3/1

3:10 pm-4:20 pm

1 stop16h 10m

Luxembourg

Wed 5/13

6:25 am-7:00 pm

2 stops21h 35m

$474

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 2/3

9:25 am-10:35 am

2 stops16h 10m

Luxembourg

Tue 2/10

10:55 am-11:40 am

1 stop33h 45m

$476

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 1/18

3:10 pm-5:50 pm

1 stop17h 40m

Luxembourg

Sat 1/31

6:00 am-11:50 am

1 stop14h 50m

$478

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 3/1

3:40 pm-1:55 pm

2 stops37h 15m

Luxembourg

Wed 5/13

6:25 am-10:42 pm

2 stops25h 17m

$480

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 1/18

12:35 pm-6:15 pm

2 stops20h 40m

Luxembourg

Sat 1/31

10:50 am-10:16 pm

2 stops20h 26m

$482

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 1/18

5:25 am-5:50 pm

2 stops27h 25m

Luxembourg

Sat 1/31

6:00 am-4:51 pm

2 stops19h 51m

$483

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 2/3

8:40 am-4:20 pm

3 stops22h 40m

Luxembourg

Tue 2/10

9:30 am-11:30 am

2 stops35h 00m

$489

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 January is also very affordable. Most momondo users find prices during this month for around $501.

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.

Cheap Seattle to Luxembourg flight deals and tips

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

Fastest flight time

16h 10m

Direct flights

None
The fastest flight from Seattle to Luxembourg takes 16h 10m
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
SWISSPriceFrom $306Free CancellationRating
7.5
1,817 reviews
Search SWISS flights
British AirwaysPriceFrom $396Free CancellationRating
6.7
7,602 reviews
Search British Airways flights
Air FrancePriceFrom $449Free CancellationRating
7.4
1,511 reviews
Search Air France flights
DeltaPriceFrom $521Free CancellationRating
7.9
8,013 reviews
Search Delta flights
LufthansaPriceFrom $591Free CancellationRating
6.8
7,646 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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