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Luxembourg

$658+ Cheap flights from Seattle (SEA) to Luxembourg (LUX)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Aug 10 — Aug 171
Mon 8/10
Mon 8/17
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 July 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/8. 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.
Sun 8/910:40 am
SEA
-
LUX
2 stops24h 30m
Multiple Airlines
Tue 8/258:30 am
LUX
-
SEA
1 stop12h 25m
Multiple Airlines
Deal found 7/8$658
This Kiwi.com deal was found by Cheapflights users on 7/8. 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.
Sun 8/96:50 pm
SEA
-
LUX
1 stop15h 40m
Lufthansa
Tue 8/258:30 am
LUX
-
SEA
1 stop12h 25m
Lufthansa
Deal found 7/8$677
This Justfly.com deal was found by Cheapflights users on 7/7. 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.
Tue 8/186:50 pm
SEA
-
LUX
1 stop12h 15m
Lufthansa
Wed 8/266:25 am
LUX
-
SEA
2 stops25h 17m
Lufthansa
Deal found 7/7$686
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Tue 8/186:50 pm
SEA
-
LUX
1 stop12h 15m
United Airlines
Wed 8/268:20 am
LUX
-
SEA
1 stop12h 35m
United Airlines
Deal found 7/8$692
This Delta deal was found by Cheapflights users on 7/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/31:50 pm
SEA
-
LUX
1 stop18h 45m
Delta
Wed 8/196:00 am
LUX
-
SEA
1 stop14h 37m
Delta
Deal found 7/7$695
This Expedia deal was found by Cheapflights users on 7/7. 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.
Mon 8/33:33 pm
SEA
-
LUX
2 stops18h 07m
Multiple Airlines
Wed 8/198:20 am
LUX
-
SEA
1 stop12h 35m
Multiple Airlines
Deal found 7/7$698

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 July 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$658
(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
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 July 11, 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 8/9

10:40 am-8:10 pm

2 stops24h 30m

Luxembourg

Tue 8/25

8:30 am-11:55 am

1 stop12h 25m

$658

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 8/3

1:50 pm-5:35 pm

1 stop18h 45m

Luxembourg

Wed 8/19

6:00 am-11:37 am

1 stop14h 37m

$695

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 8/9

10:40 am-8:10 pm

2 stops24h 30m

Luxembourg

Tue 8/25

10:15 am-8:43 pm

2 stops19h 28m

$707
Quickest round-trip

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Fri 10/16

6:50 pm-7:30 pm

1 stop15h 40m

Luxembourg

Tue 10/20

8:30 am-12:20 pm

1 stop12h 50m

$729

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Fri 9/4

11:04 pm-7:45 am

2 stops23h 41m

Luxembourg

Tue 9/15

8:30 am-11:55 am

1 stop12h 25m

$745

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

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.

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 July 11, 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
7.5
Good
1,625 reviews

Boarding

7.5

Food

7.0

Overall

7.5

Entertainment

7.0

Crew

8.2

Comfort

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
7.5
Good
1,625 reviews
Air France
7.5
Good
1,625 reviews

Boarding

7.5

Food

7.0

Overall

7.5

Entertainment

7.0

Crew

8.2

Comfort

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
9,978 reviews
Air France
7.5
Good
1,625 reviews

Boarding

7.5

Food

7.0

Overall

7.5

Entertainment

7.0

Crew

8.2

Comfort

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
8,131 reviews
Air France
7.5
Good
1,625 reviews

Boarding

7.5

Food

7.0

Overall

7.5

Entertainment

7.0

Crew

8.2

Comfort

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 $729, Delta can have you in Luxembourg from Seattle in 15h 40m. 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

Browse thousands of different options on Cheapflights for your next trip

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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 July 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$456Average$523FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$471Average$592FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$490Average$723FlexibilityNo cancel feeOn-time76%

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