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Cheap flights from Seattle to Luxembourg from $688

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 8/4. 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.
British Airways Logo
8:20 pm - 7:45 pm
SEA
-
LUX
14h 25m
1 stop
British Airways Logo
9:35 pm - 11:35 am
LUX
-
SEA
23h 00m
1 stop
$688British 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
9:35 pm - 11:35 am
LUX
-
SEA
23h 00m
1 stop
$689British Airways
Tue, Aug 4 - Wed, Aug 19
Lufthansa Logo
6:50 pm - 4:10 pm
SEA
-
LUX
12h 20m
1 stop
Lufthansa Logo
6:25 am - 11:55 am
LUX
-
SEA
14h 30m
1 stop
$693Lufthansa
Tue, Aug 18 - Wed, Aug 26
British Airways Logo
8:20 pm - 10:45 am
SEA
-
LUX
29h 25m
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
8:40 am - 4:10 pm
SEA
-
LUX
22h 30m
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
11:03 am - 4:10 pm
SEA
-
LUX
20h 07m
2 stops
United Airlines Logo
8:20 am - 11:55 am
LUX
-
SEA
12h 35m
1 stop
$699United Airlines
Tue, Aug 18 - Wed, Aug 26
United Airlines Logo
5:00 am - 4:10 pm
SEA
-
LUX
26h 10m
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
Air Canada Logo
8:00 am - 4:10 pm
SEA
-
LUX
23h 10m
2 stops
Air Canada Logo
8:20 am - 2:22 pm
LUX
-
SEA
15h 02m
2 stops
$702Air Canada
Tue, Aug 18 - Wed, Aug 26
United Airlines Logo
6:50 pm - 4:10 pm
SEA
-
LUX
12h 20m
1 stop
United Airlines Logo
8:20 am - 11:26 pm
LUX
-
SEA
24h 06m
3 stops
$704United Airlines
Tue, Aug 18 - Wed, Aug 26
Lufthansa Logo
2:10 pm - 2:00 pm
SEA
-
LUX
14h 50m
1 stop
Lufthansa Logo
8:20 am - 11:55 am
LUX
-
SEA
12h 35m
1 stop
$705Lufthansa
Tue, Aug 4 - Wed, Aug 19

Lufthansa flights from Seattle to Luxembourg

Our best Lufthansa deals on Seattle to Luxembourg flight tickets
Lufthansa
Aug 18
SEA6:50 pmSeattle/Tacoma Intl
12h 20m
1 stop
LUX4:10 pmLuxembourg
Aug 26
LUX6:25 amLuxembourg
14h 30m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$693
Lufthansa
Aug 4
SEA2:10 pmSeattle/Tacoma Intl
14h 50m
1 stop
LUX2:00 pmLuxembourg
Aug 19
LUX8:20 amLuxembourg
12h 35m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$705
Lufthansa
Jul 30
SEA6:50 pmSeattle/Tacoma Intl
12h 20m
1 stop
LUX4:10 pmLuxembourg
Aug 13
LUX8:20 amLuxembourg
12h 35m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$730

United Airlines flights from Seattle to Luxembourg

Our best United Airlines deals on Seattle to Luxembourg flight tickets
United Airlines
Aug 18
SEA8:40 amSeattle/Tacoma Intl
22h 30m
2 stops
LUX4:10 pmLuxembourg
Aug 26
LUX8:20 amLuxembourg
12h 35m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$698
United Airlines
Aug 18
SEA11:03 amSeattle/Tacoma Intl
20h 07m
2 stops
LUX4:10 pmLuxembourg
Aug 26
LUX8:20 amLuxembourg
12h 35m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$699
United Airlines
Aug 4
SEA5:00 amSeattle/Tacoma Intl
26h 10m
2 stops
LUX4:10 pmLuxembourg
Aug 19
LUX9:40 amLuxembourg
16h 19m
1 stop
SEA4:59 pmSeattle/Tacoma Intl
$700

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 May 18, 2026.
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

Cheapest round-trip

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/4

8:20 pm-7:45 pm

1 stop14h 25m

Luxembourg

Wed 8/19

9:35 pm-11:35 am

1 stop23h 00m

$688

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/4

1:30 pm-10:40 am

1 stop12h 10m

Luxembourg

Wed 8/19

9:35 pm-11:35 am

1 stop23h 00m

$689
Quickest round-trip

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/18

6:50 pm-4:10 pm

1 stop12h 20m

Luxembourg

Wed 8/26

6:25 am-11:55 am

1 stop14h 30m

$693

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/4

8:20 pm-10:45 am

1 stop29h 25m

Luxembourg

Wed 8/19

11:35 am-11:35 am

1 stop33h 00m

$697

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/18

8:40 am-4:10 pm

2 stops22h 30m

Luxembourg

Wed 8/26

8:20 am-11:55 am

1 stop12h 35m

$698

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/18

11:03 am-4:10 pm

2 stops20h 07m

Luxembourg

Wed 8/26

8:20 am-11:55 am

1 stop12h 35m

$699

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/4

5:00 am-4:10 pm

2 stops26h 10m

Luxembourg

Wed 8/19

9:40 am-4:59 pm

1 stop16h 19m

$700

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/18

8:00 am-4:10 pm

2 stops23h 10m

Luxembourg

Wed 8/26

8:20 am-2:22 pm

2 stops15h 02m

$702

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/18

6:50 pm-4:10 pm

1 stop12h 20m

Luxembourg

Wed 8/26

8:20 am-11:26 pm

3 stops24h 06m

$704

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/4

2:10 pm-2:00 pm

1 stop14h 50m

Luxembourg

Wed 8/19

8:20 am-11:55 am

1 stop12h 35m

$705

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 December is also very affordable. Most momondo users find prices during this month for around $425.

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

12h 20m

Direct flights

None
The fastest flight from Seattle to Luxembourg takes 12h 20m
There are no direct flights from Seattle to Luxembourg. There are no popular flight routes from Seattle to Luxembourg.
Search flight deals

Frequently asked questions about flying from Seattle to Luxembourg

  • 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
7,986 reviews
Search British Airways flights
Air FrancePriceFrom $449Free CancellationRating
7.4
1,588 reviews
Search Air France flights
United AirlinesPriceFrom $471Free CancellationRating
7.4
9,731 reviews
Search United Airlines flights
LufthansaPriceFrom $490Free CancellationRating
6.8
8,010 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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