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Luxembourg

$469+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This Delta deal was found by Cheapflights users on 12/15. 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.
Thu 12/253:05 pmSEA - LUX
1 stop14h 10mDelta
Mon 1/510:55 amLUX - SEA
1 stop33h 55mDelta
Deal found 12/15$1,423
This Ovago deal was found by Cheapflights users on 12/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:52 amSEA - LUX
2 stops38h 13mMultiple Airlines
Mon 1/52:20 pmLUX - SEA
2 stops36h 54mMultiple Airlines
Deal found 12/15$1,531
This Delta deal was found by Cheapflights users on 12/16. 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.
Tue 12/233:05 pmSEA - LUX
1 stop17h 45mDelta
Mon 1/510:55 amLUX - SEA
1 stop33h 55mDelta
Deal found 12/16$1,702
This Gurufare deal was found by Cheapflights users on 12/15. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:35 pmSEA - LUX
2 stops35h 25mMultiple Airlines
Mon 1/56:55 amLUX - SEA
2 stops24h 52mMultiple Airlines
Deal found 12/15$1,731
This Mytrip deal was found by Cheapflights users on 12/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:40 pmSEA - LUX
2 stops20h 00mMultiple Airlines
Sun 1/47:10 pmLUX - SEA
2 stops29h 30mMultiple Airlines
Deal found 12/15$1,760
This KAYAK deal was found by Cheapflights users on 12/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:10 pmSEA - LUX
1 stop16h 10mLufthansa
Mon 1/52:20 pmLUX - SEA
2 stops36h 54mLufthansa
Deal found 12/16$1,765
This Delta deal was found by Cheapflights users on 12/15. 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.
Wed 12/243:05 pmSEA - LUX
1 stop17h 45mDelta
Mon 1/510:55 amLUX - SEA
1 stop33h 55mDelta
Deal found 12/15$1,812

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$469
(FlightHub)

Popular in

June

Cheapest in

August

Average price

$612
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. 21% potential increase in price ($181 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 18, 2025.
Use the filters below to find and compare flights from Seattle to Luxembourg that are best for you.

Fly from

Seattle

Fly to

Luxembourg

Route

Depart

Return

Price

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 3/1

3:10 pm-4:20 pm

1 stop16h 10m

Luxembourg

Wed 5/13

6:15 am-12:20 pm

1 stop15h 05m

$469

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Fri 1/30

2:10 pm-1:50 pm

1 stop14h 40m

Luxembourg

Fri 2/6

6:20 pm-11:40 am

1 stop26h 20m

$472

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 3/1

2:10 pm-1:50 pm

1 stop14h 40m

Luxembourg

Wed 5/13

7:30 am-5:39 pm

1 stop19h 09m

$477

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 5/13

6:50 pm-7:35 pm

1 stop15h 45m

Luxembourg

Tue 5/26

8:20 am-12:20 pm

1 stop13h 00m

$499

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 5/13

1:35 pm-8:20 pm

1 stop21h 45m

Luxembourg

Mon 5/25

9:05 pm-11:35 am

1 stop23h 30m

$505

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 5/13

6:50 pm-7:35 pm

1 stop15h 45m

Luxembourg

Sun 5/24

8:25 am-4:59 pm

2 stops17h 34m

$598

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sat 1/3

7:00 pm-9:55 am

1 stop29h 55m

$570

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sat 1/3

2:00 pm-8:50 am

2 stops33h 50m

$586

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sat 1/3

2:00 pm-3:10 pm

3 stops40h 10m

$666

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

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 December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
GurufarePrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Luxembourg flight deals on Cheapflights vs. eDreams >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 Gurufare the most. Gurufare 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 $306). Flying from Seattle to Luxembourg in October is currently the most expensive (average of $835). 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.

What is the cheapest time of day to fly from SEA to LUX?

Find hourly flight availability from Seattle to Luxembourg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 24% on flights from Seattle to Luxembourg by exploring options for tickets in the evening.

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 December 18, 2025.
Read through reviews of airlines operating flights from Seattle to Luxembourg, such as Delta, SWISS, and Air France. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,008 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
SWISS
7.5
Good
1,815 reviews
Delta
7.9
Good
8,008 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air France
7.4
Good
1,507 reviews
Delta
7.9
Good
8,008 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,635 reviews
Delta
7.9
Good
8,008 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,585 reviews
Delta
7.9
Good
8,008 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 $477, Lufthansa can have you in Luxembourg from Seattle in 14h 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?

    SWISS, at $306, was found to be the cheapest airline from Seattle to Luxembourg.Alternate airlines to your destination round-trip include British Airways and Air France. SWISS is 53% 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 $306). Flying from Seattle to Luxembourg in October is currently the most expensive (average of $835). 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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Alternative routes for Seattle to Luxembourg

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Luxembourg flights

Top 5 airlines flying from Seattle to Luxembourg

Discover the top 5 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$306Average$306FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$396Average$528FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$449Average$561FlexibilityNo cancel feeOn-time77%
DeltaCheapest$521Average$741FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$591Average$734FlexibilityNo cancel feeOn-time76%

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