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Luxembourg

$356+ Cheap flights from Seattle (SEA) to Luxembourg (LUX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
aug. 22 — aug. 291
za 8/22
za 8/29
1 adult, Economy
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Cheap flight deals from Seattle to Luxembourg

Cheapest flights from Seattle to Luxembourg
Explore the most affordable flight options available from Seattle to Luxembourg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juli 23, 2026.

This Expedia deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
zo 9/132:10 pm
SEA
-
LUX
1 stop14h 40m
Lufthansa
ma 9/286:25 pm
LUX
-
SEA
1 stop26h 30m
Lufthansa
Deal found 7/22$675
This Gotogate deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
do 12/108:15 am
SEA
-
LUX
2 stops23h 25m
Multiple Airlines
vr 12/2510:45 am
LUX
-
SEA
2 stops19h 14m
Multiple Airlines
Deal found 7/19$676
This Air France deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 8/181:30 pm
SEA
-
LUX
1 stop15h 20m
Multiple Airlines
wo 8/2610:30 am
LUX
-
SEA
1 stop14h 57m
Multiple Airlines
Deal found 7/20$690
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 8/186:50 pm
SEA
-
LUX
1 stop12h 15m
United Airlines
wo 8/268:20 am
LUX
-
SEA
1 stop12h 35m
United Airlines
Deal found 7/19$692
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
zo 9/136:50 pm
SEA
-
LUX
1 stop12h 15m
Multiple Airlines
ma 9/288:55 pm
LUX
-
SEA
2 stops30h 37m
Multiple Airlines
Deal found 7/22$693
This Justfly.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 8/186:50 pm
SEA
-
LUX
1 stop12h 15m
Lufthansa
wo 8/266:25 am
LUX
-
SEA
2 stops21h 42m
Lufthansa
Deal found 7/19$696

Find flight deals from Seattle to Luxembourg

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Luxembourg (LUX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated juli 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$675
(Expedia)

One-way from

$356
(Kiwi.com)

Popular in

July

Cheapest in

August

Average price

$1,076
Provider with most accurate pricing for Seattle/Tacoma Intl-Luxembourg flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Luxembourg flights.
Search Deals
From Seattle/Tacoma Intl to Luxembourg
Search Deals
One-way flight from Seattle/Tacoma Intl to Luxembourg
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($159 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated juli 23, 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
Quickest round-trip

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

di 8/18

6:50 pm-4:05 pm

1 stop12h 15m

Luxembourg

wo 8/26

8:20 am-11:55 am

1 stop12h 35m

$692

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

zo 9/13

6:50 pm-4:05 pm

1 stop12h 15m

Luxembourg

ma 9/28

8:55 pm-6:32 pm

2 stops30h 37m

$724

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

zo 9/13

1:50 pm-5:55 pm

1 stop19h 05m

Luxembourg

ma 9/28

10:25 am-11:47 am

1 stop34h 22m

$724

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

wo 9/2

8:10 am-4:05 pm

2 stops22h 55m

Luxembourg

wo 9/9

8:20 am-11:55 am

1 stop12h 35m

$728

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

di 10/6

11:13 pm-4:05 pm

2 stops31h 52m

Luxembourg

di 10/27

9:30 am-8:38 pm

3 stops43h 08m

$749

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

zo 9/13

11:04 pm-7:30 pm

2 stops35h 26m

Luxembourg

ma 9/28

8:25 am-8:37 pm

3 stops45h 12m

$763

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

za 8/22

11:04 pm-7:45 am

2 stops23h 41m

Luxembourg

ma 8/31

8:25 am-7:07 pm

2 stops43h 42m

$774

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

za 8/22

6:50 pm-9:40 am

2 stops29h 50m

Luxembourg

ma 8/31

4:50 pm-4:59 pm

1 stop33h 09m

$780
Cheapest one-way

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

vr 9/4

11:25 pm-8:50 am

3 stops48h 25m

$401
Quickest one-way

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

vr 9/4

2:10 pm-7:45 am

1 stop32h 35m

$545

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Sorted by cheapest first

Compare providers for flights from Seattle to Luxembourg

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Luxembourg in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Luxembourg flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Luxembourg flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Luxembourg flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Luxembourg flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Luxembourg flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Luxembourg

Have a flexible travel schedule? Discover the best time to fly to Luxembourg from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Luxembourg

What is the cheapest month to book a flight from Seattle to Luxembourg?

Currently, August is the cheapest month in which you can book a flight from Seattle to Luxembourg (average of $426). Flying from Seattle to Luxembourg in July is currently the most expensive (average of $1,076). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to Luxembourg?

Airfare is typical for this route at the moment.

Seattle to Luxembourg flights typically cost between $646 and $842 in September.
The cheapest round-trip price found within the last 5 days was $675 on Lufthansa (Sep 13-Sep 28).

Reviews of airlines servicing Luxembourg

Get insights into the airlines that provide service to Luxembourg. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Luxembourg. Reviews last updated juli 23, 2026.
Read through reviews of airlines operating flights from Seattle to Luxembourg, such as Air France,United Airlines, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air France
7.4
Good
1,628 reviews

Entertainment

7.0

Boarding

7.5

Food

7.0

Comfort

7.4

Crew

8.2

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Carlie,Jun 2026

ATH - CDG

The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
Air France
7.4
Good
1,628 reviews
Air France
7.4
Good
1,628 reviews

Entertainment

7.0

Boarding

7.5

Food

7.0

Comfort

7.4

Crew

8.2

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Carlie,Jun 2026

ATH - CDG

The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
United Airlines
7.4
Good
10,025 reviews
Air France
7.4
Good
1,628 reviews

Entertainment

7.0

Boarding

7.5

Food

7.0

Comfort

7.4

Crew

8.2

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Carlie,Jun 2026

ATH - CDG

The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
Lufthansa
6.8
Okay
8,159 reviews
Air France
7.4
Good
1,628 reviews

Entertainment

7.0

Boarding

7.5

Food

7.0

Comfort

7.4

Crew

8.2

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Carlie,Jun 2026

ATH - CDG

The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Luxembourg. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Luxembourg?

    For as low as $692, United Airlines can have you in Luxembourg from Seattle in 12h 15m. Seattle and Luxembourg are separated by a distance of 5057 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Seattle to Luxembourg round-trip?

    Air France, at $455, was found to be the cheapest airline from Seattle to Luxembourg.Alternate airlines to your destination round-trip include United Airlines and Lufthansa. Air France is 33% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Seattle to Luxembourg that include hotel bookings?

    Yes. In addition to deals on Seattle to Luxembourg flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Luxembourg?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Luxembourg.

  • Can I find deals for business class flights from Seattle to Luxembourg?

    Yes. Cheapflights offers flight deals from Seattle to Luxembourg by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Luxembourg?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Luxembourg (average of $426). Flying from Seattle to Luxembourg in July is currently the most expensive (average of $1,076). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Luxembourg?

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

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Complete your trip

Complete your trip to Luxembourg by adding a car rental and/or hotel reservation to your travel itinerary.
Luxembourg Airport car rentals

Top 3 airlines flying from Seattle to Luxembourg

Discover the top 3 airlines that operate flights from Seattle to Luxembourg. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated juli 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$455Average$723FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$471Average$592FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$490Average$723FlexibilityNo cancel feeOn-time76%

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