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Cheap flights from Seattle to Luxembourg from $304

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 6/9. 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
1 adult, Economy, 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
6:50 pm - 7:30 pm
SEA
-
LUX
15h 40m
1 stop
Multiple Airlines Logo
10:15 am - 9:53 pm
LUX
-
SEA
20h 38m
2 stops
$582Multiple Airlines
Sun, Apr 12 - Tue, Apr 28
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
$591Lufthansa
Tue, Aug 4 - Wed, Aug 19
United Airlines Logo
6:50 pm - 7:30 pm
SEA
-
LUX
15h 40m
1 stop
United Airlines Logo
8:30 am - 12:20 pm
LUX
-
SEA
12h 50m
1 stop
$593United Airlines
Sun, Apr 12 - Tue, Apr 28
United Airlines Logo
10:52 am - 4:10 pm
SEA
-
LUX
20h 18m
2 stops
United Airlines Logo
8:20 am - 11:55 am
LUX
-
SEA
12h 35m
1 stop
$597United Airlines
Tue, Aug 4 - Wed, Aug 19
Multiple Airlines Logo
8:00 pm - 1:50 pm
SEA
-
LUX
32h 50m
2 stops
Multiple Airlines Logo
2:25 pm - 9:53 pm
LUX
-
SEA
40h 28m
2 stops
$600Multiple Airlines
Sun, Apr 12 - Tue, Apr 28
United Airlines Logo
8:10 am - 4:10 pm
SEA
-
LUX
23h 00m
2 stops
United Airlines Logo
8:20 am - 12:20 pm
LUX
-
SEA
13h 00m
1 stop
$603United Airlines
Thu, Apr 30 - Thu, May 7
United Airlines Logo
10:47 am - 4:10 pm
SEA
-
LUX
20h 23m
2 stops
United Airlines Logo
8:20 am - 6:29 pm
LUX
-
SEA
19h 09m
2 stops
$607United Airlines
Tue, Aug 18 - Wed, Aug 26
United Airlines Logo
3:40 pm - 7:30 pm
SEA
-
LUX
18h 50m
2 stops
United Airlines Logo
8:20 am - 11:29 pm
LUX
-
SEA
24h 09m
3 stops
$613United Airlines
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
8:00 am - 4:10 pm
SEA
-
LUX
23h 10m
2 stops
Multiple Airlines Logo
8:30 am - 12:20 pm
LUX
-
SEA
12h 50m
1 stop
$627Multiple Airlines
Tue, Apr 14 - Tue, Apr 28
British Airways Logo
8:20 pm - 9:20 am
SEA
-
LUX
28h 00m
1 stop
British Airways Logo
11:45 am - 11:35 am
LUX
-
SEA
32h 50m
1 stop
$628British Airways
Fri, Apr 24 - Thu, May 7

British Airways flights from Seattle to Luxembourg

Our best British Airways deals on Seattle to Luxembourg flight tickets
British Airways
Apr 24
SEA8:20 pmSeattle/Tacoma Intl
28h 00m
1 stop
LUX9:20 amLuxembourg
May 7
LUX11:45 amLuxembourg
32h 50m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$628
British Airways
Aug 4
SEA6:00 amSeattle/Tacoma Intl
19h 40m
2 stops
LUX10:40 amLuxembourg
Aug 19
LUX9:35 pmLuxembourg
23h 00m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$645
British Airways
Aug 4
SEA8:20 pmSeattle/Tacoma Intl
14h 25m
1 stop
LUX7:45 pmLuxembourg
Aug 19
LUX9:35 pmLuxembourg
23h 00m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$663

Delta flights from Seattle to Luxembourg

Our best Delta deals on Seattle to Luxembourg flight tickets
Delta
May 5
SEA1:45 pmSeattle/Tacoma Intl
15h 20m
1 stop
LUX2:05 pmLuxembourg
May 13
LUX6:00 amLuxembourg
19h 30m
1 stop
SEA4:30 pmSeattle/Tacoma Intl
$695
Delta
May 2
SEA11:11 pmSeattle/Tacoma Intl
25h 44m
2 stops
LUX9:55 amLuxembourg
May 11
LUX10:25 amLuxembourg
34h 17m
1 stop
SEA11:42 amSeattle/Tacoma Intl
$700
Delta
May 7
SEA5:40 pmSeattle/Tacoma Intl
31h 15m
1 stop
LUX9:55 amLuxembourg
May 11
LUX2:35 pmLuxembourg
30h 07m
1 stop
SEA11:42 amSeattle/Tacoma Intl
$701

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 March 19, 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

Sun 4/12

6:50 pm-7:30 pm

1 stop15h 40m

Luxembourg

Tue 4/28

10:15 am-9:53 pm

2 stops20h 38m

$582
Quickest round-trip

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/4

6:50 pm-4:10 pm

1 stop12h 20m

Luxembourg

Wed 8/19

6:25 am-11:55 am

1 stop14h 30m

$591

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 4/12

6:50 pm-7:30 pm

1 stop15h 40m

Luxembourg

Tue 4/28

8:30 am-12:20 pm

1 stop12h 50m

$593

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/4

10:52 am-4:10 pm

2 stops20h 18m

Luxembourg

Wed 8/19

8:20 am-11:55 am

1 stop12h 35m

$597

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 4/12

8:00 pm-1:50 pm

2 stops32h 50m

Luxembourg

Tue 4/28

2:25 pm-9:53 pm

2 stops40h 28m

$600

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Thu 4/30

8:10 am-4:10 pm

2 stops23h 00m

Luxembourg

Thu 5/7

8:20 am-12:20 pm

1 stop13h 00m

$603

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/18

10:47 am-4:10 pm

2 stops20h 23m

Luxembourg

Wed 8/26

8:20 am-6:29 pm

2 stops19h 09m

$607

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Thu 4/30

3:40 pm-7:30 pm

2 stops18h 50m

Luxembourg

Thu 5/7

8:20 am-11:29 pm

3 stops24h 09m

$613

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 4/14

8:00 am-4:10 pm

2 stops23h 10m

Luxembourg

Tue 4/28

8:30 am-12:20 pm

1 stop12h 50m

$627

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Fri 4/24

8:20 pm-9:20 am

1 stop28h 00m

Luxembourg

Thu 5/7

11:45 am-11:35 am

1 stop32h 50m

$628

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $469.

When to book flights from Seattle to Luxembourg

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Luxembourg according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Luxembourg (SEA to LUX) flight deals and tips

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

Fastest flight time

12h 15m

Direct flights

None
The fastest flight from Seattle to Luxembourg takes 12h 15m
There are no direct flights from Seattle to Luxembourg. There are no popular flight routes from Seattle to Luxembourg.
Search flight deals

  • How far is Seattle/Tacoma Intl to Luxembourg by plane?

    The straight-line distance from Seattle/Tacoma Intl to Luxembourg is 5046.7 mi. By plane, this route typically takes 12h 15m.

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

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

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

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

    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 Airport.

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

    The travel and health documents you'll need for your trip to Luxembourg Airport 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 Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Luxembourg?

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
1,901 reviews
Search SWISS flights
British AirwaysPriceFrom $396Free CancellationRating
6.7
7,804 reviews
Search British Airways flights
Air FrancePriceFrom $449Free CancellationRating
7.4
1,547 reviews
Search Air France flights
United AirlinesPriceFrom $471Free CancellationRating
7.4
9,445 reviews
Search United Airlines flights
LufthansaPriceFrom $490Free CancellationRating
6.8
7,858 reviews
Search Lufthansa flights

Traveling to a place near Luxembourg?

Book flights to Luxembourg if you plan to visit one of these locations
Esch-sur-Alzette
Clervaux

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Luxembourg. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Luxembourg from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Luxembourg.

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

If you are simply researching potential flights to Luxembourg, momondo offers a useful price alert feature which will track prices for flights to Luxembourg from Seattle and alert you when they change.

An easier way to manage your Luxembourg trip

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Find better results for your trip to Luxembourg

Fly your favorite airline to Luxembourg

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Air France
Lufthansa
British Airways
United Airlines
SWISS