What is the cheapest airline that flies from Seattle/Tacoma Intl to Luxembourg?

British Airways is the most popular carrier operating from Seattle/Tacoma Intl to Luxembourg

Which airport is the most popular layover for flights between Seattle and Luxembourg?

London (LHR) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Luxembourg?

Lufthansa, Air France and British Airways are the top three most popular airlines that fly to Luxembourg from Seattle according to our data. Lufthansa is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Luxembourg. Keep in mind that there are 6 different airlines that fly to Luxembourg on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Seattle to Luxembourg?

Flights connecting via London (LHR) have the shortest average one-way travel time: 12h 20m.

Which layover airport has the shortest connection time from Seattle to Luxembourg?

Paris (CDG) has the shortest average layover time for this route: 2h 01m.

Which layover airport offers the lowest fares from Seattle to Luxembourg?

Flights via London (LHR) offer the lowest average round-trip price of $484.

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?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Luxembourg Airport is 6 as of July 2025.

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.

$355 Cheap Flights from Seattle to Luxembourg in 2025

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Find the cheapest flights from Seattle to Luxembourg

Round-trip

One-way

Last minute

Cheap round-trip flights

6:50 pm - 9:10 pmSEA-LUX

17h 20m1 stop

9:55 pm - 4:55 pmLUX-SEA

28h 00m1 stop

$435British Airways

Find Deal

Wed, Nov 19 - Wed, Dec 3

1:35 pm - 4:50 pmSEA-LUX

18h 15m2 stops

3:55 pm - 4:55 pmLUX-SEA

34h 00m1 stop

$439British Airways

Find Deal

Wed, Nov 19 - Wed, Dec 3

1:30 pm - 1:50 pmSEA-LUX

15h 20m1 stop

7:30 am - 5:35 pmLUX-SEA

19h 05m1 stop

$456Air France

Find Deal

Sun, Aug 17 - Thu, Aug 21

1:30 pm - 1:50 pmSEA-LUX

15h 20m1 stop

7:30 am - 5:35 pmLUX-SEA

19h 05m1 stop

$457Air France

Find Deal

Wed, Aug 13 - Fri, Aug 22

9:40 am - 5:15 pmSEA-LUX

22h 35m2 stops

6:10 am - 3:55 pmLUX-SEA

18h 45m1 stop

$475Delta

Find Deal

Sun, Aug 17 - Thu, Aug 21

7:10 am - 10:00 amSEA-LUX

17h 50m2 stops

6:05 am - 11:35 amLUX-SEA

14h 30m1 stop

$476Delta

Find Deal

Wed, Aug 13 - Fri, Aug 22

5:40 pm - 10:00 amSEA-LUX

31h 20m1 stop

6:05 am - 4:05 pmLUX-SEA

19h 00m1 stop

$502KLM

Find Deal

Sat, Sep 13 - Sat, Sep 20

3:00 pm - 5:50 pmSEA-LUX

17h 50m1 stop

6:05 am - 11:50 amLUX-SEA

14h 45m1 stop

$649KLM

Find Deal

Wed, Dec 24 - Thu, Jan 1

3:10 pm - 4:10 pmSEA-LUX

16h 00m1 stop

2:30 pm - 12:10 pmLUX-SEA

30h 40m1 stop

$653Lufthansa

Find Deal

Wed, Dec 24 - Wed, Dec 31

2:00 pm - 1:50 pmSEA-LUX

14h 50m1 stop

9:30 am - 12:10 pmLUX-SEA

35h 40m2 stops

$667Lufthansa

Find Deal

Tue, Dec 23 - Mon, Dec 29

Air France flights from Seattle to Luxembourg

Our best Air France deals on Seattle to Luxembourg flight tickets

Air France

Aug 4

SEA6:40 pmSeattle/Tacoma Intl

18h 05m

1 stop

LUX9:45 pmLuxembourg

Aug 20

LUX7:30 amLuxembourg

19h 05m

1 stop

SEA5:35 pmSeattle/Tacoma Intl

$456

Find similar

Air France

Aug 13

SEA1:30 pmSeattle/Tacoma Intl

15h 20m

1 stop

LUX1:50 pmLuxembourg

Aug 22

LUX7:30 amLuxembourg

19h 05m

1 stop

SEA5:35 pmSeattle/Tacoma Intl

$457

Find similar

Air France

Oct 15

SEA1:30 pmSeattle/Tacoma Intl

15h 20m

1 stop

LUX1:50 pmLuxembourg

Jan 11

LUX7:30 amLuxembourg

14h 50m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$470

Find similar

Delta flights from Seattle to Luxembourg

Our best Delta deals on Seattle to Luxembourg flight tickets

Delta

Aug 17

SEA9:40 amSeattle/Tacoma Intl

22h 35m

2 stops

LUX5:15 pmLuxembourg

Aug 21

LUX6:10 amLuxembourg

18h 45m

1 stop

SEA3:55 pmSeattle/Tacoma Intl

$475

Find similar

Delta

Aug 4

SEA9:45 pmSeattle/Tacoma Intl

27h 15m

2 stops

LUX10:00 amLuxembourg

Aug 20

LUX10:30 amLuxembourg

34h 05m

1 stop

SEA11:35 amSeattle/Tacoma Intl

$476

Find similar

Delta

Aug 17

SEA9:40 amSeattle/Tacoma Intl

22h 35m

2 stops

LUX5:15 pmLuxembourg

Aug 21

LUX10:30 amLuxembourg

18h 54m

2 stops

SEA8:24 pmSeattle/Tacoma Intl

$485

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 11/19

6:50 pm-9:10 pm

1 stop17h 20m

Luxembourg

Wed 12/3

9:55 pm-4:55 pm

1 stop28h 00m

$435

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 11/19

1:35 pm-4:50 pm

2 stops18h 15m

Luxembourg

Wed 12/3

3:55 pm-4:55 pm

1 stop34h 00m

$439

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 8/17

1:30 pm-1:50 pm

1 stop15h 20m

Luxembourg

Thu 8/21

7:30 am-5:35 pm

1 stop19h 05m

$456

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 8/13

1:30 pm-1:50 pm

1 stop15h 20m

Luxembourg

Fri 8/22

7:30 am-5:35 pm

1 stop19h 05m

$457

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 8/17

9:40 am-5:15 pm

2 stops22h 35m

Luxembourg

Thu 8/21

6:10 am-3:55 pm

1 stop18h 45m

$475

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 8/13

7:10 am-10:00 am

2 stops17h 50m

Luxembourg

Fri 8/22

6:05 am-11:35 am

1 stop14h 30m

$476

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sat 9/13

5:40 pm-10:00 am

1 stop31h 20m

Luxembourg

Sat 9/20

6:05 am-4:05 pm

1 stop19h 00m

$502

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 12/24

3:00 pm-5:50 pm

1 stop17h 50m

Luxembourg

Thu 1/1

6:05 am-11:50 am

1 stop14h 45m

$649

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 12/24

3:10 pm-4:10 pm

1 stop16h 00m

Luxembourg

Wed 12/31

2:30 pm-12:10 pm

1 stop30h 40m

$653

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 12/23

2:00 pm-1:50 pm

1 stop14h 50m

Luxembourg

Mon 12/29

9:30 am-12:10 pm

2 stops35h 40m

$667

Flights are sorted by cheapest round-trip flights first.

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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

Prices

Airlines

Layovers

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 $671 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 $428 on momondo.

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

Best Price Found	$355
Fastest flight time	12h 05m
Direct flights	None
Airports in Luxembourg	1 airport

The best one-way flight to Luxembourg from Seattle in the past 72 hours is $355. The best round-trip flight deal from Seattle to Luxembourg found on momondo in the last 72 hours is $435.

The fastest flight from Seattle to Luxembourg takes 12h 05m

There are no direct flights from Seattle to Luxembourg. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Luxembourg Airport.

There is 1 airport near Luxembourg: Luxembourg (LUX)

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 05m.
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?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Luxembourg Airport is 6 as of July 2025.
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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Luxembourg is Lufthansa (32% of total bookings). The next most popular airlines are Air France (23%), British Airways (21%), and Delta (11%).

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 Airways	PriceFrom $396	Free Cancellation	Rating 6.6 7,222 reviews	Search British Airways flights
American Airlines	PriceFrom $443	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Air France	PriceFrom $449	Free Cancellation	Rating 7.5 1,465 reviews	Search Air France flights
Delta	PriceFrom $496	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
KLM	PriceFrom $576	Free Cancellation	Rating 7.8 1,383 reviews	Search KLM flights
Lufthansa	PriceFrom $601	Free Cancellation	Rating 6.8 7,275 reviews	Search Lufthansa flights

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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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Seattle to Luxembourg from $355

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 11/30. 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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Filter for what you want

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Find the cheapest flights from Seattle to Luxembourg

Cheap round-trip flights

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Cheap last minute flights

Air France flights from Seattle to Luxembourg

Our best Air France deals on Seattle to Luxembourg flight tickets

Delta flights from Seattle to Luxembourg

Our best Delta deals on Seattle to Luxembourg flight tickets

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Use the filters below to find and compare flights from Seattle to Luxembourg that are best for you.

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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?

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

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

What is the cheapest airline that flies from Seattle/Tacoma Intl to Luxembourg?

British Airways is the most popular carrier operating from Seattle/Tacoma Intl to Luxembourg

What airlines fly to Luxembourg?

Which airport is the most popular layover for flights between Seattle and Luxembourg?

London (LHR) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Luxembourg?

Flights via London (LHR) offer the lowest average round-trip price of $484.

Which layover airport has the shortest travel time from Seattle to Luxembourg?

Flights connecting via London (LHR) have the shortest average one-way travel time: 12h 20m.

Which layover airport has the shortest connection time from Seattle to Luxembourg?

Paris (CDG) has the shortest average layover time for this route: 2h 01m.

When to book flights from Seattle to Luxembourg

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

Best Price Found

Fastest flight time

Direct flights

Airports in Luxembourg

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

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

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?

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

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

Traveling to a place near Luxembourg?

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Luxembourg trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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