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$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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap 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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$414
(AirNGo)

One-way from

$356
(Kiwi.com)

Popular in

June

Cheapest in

August
Provider with most accurate pricing for Seattle/Tacoma Intl-Luxembourg flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Luxembourg flights.
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From Seattle/Tacoma Intl to Luxembourg
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One-way flight from Seattle/Tacoma Intl to Luxembourg
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Highest demand for flights based on searches. 21% potential increase in price ($181 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($37 potential savings vs. average RT price).
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Find 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 January 8, 2026.

This AirNGo deal was found by Cheapflights users on 1/7. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/262:04 pmSEA - LUX
2 stops22h 01mBritish Airways
Mon 2/99:55 pmLUX - SEA
1 stop28h 00mBritish Airways
Deal found 1/7$414
This British Airways deal was found by Cheapflights users on 1/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/41:35 pmSEA - LUX
1 stop12h 05mBritish Airways
Wed 8/1911:40 amLUX - SEA
1 stop15h 45mBritish Airways
Deal found 1/6$426
This Air France deal was found by Cheapflights users on 1/6. 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.
Sun 3/12:10 pmSEA - LUX
1 stop14h 40mAir France
Wed 5/137:30 amLUX - SEA
1 stop19h 09mAir France
Deal found 1/6$458
This American Airlines deal was found by Cheapflights users on 1/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/111:45 amSEA - LUX
2 stops19h 35mAmerican Airlines
Wed 5/1311:40 amLUX - SEA
2 stops20h 59mAmerican Airlines
Deal found 1/7$464
This Flysmarter deal was found by Cheapflights users on 1/7. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/263:10 pmSEA - LUX
1 stop17h 40mKLM
Mon 2/910:55 amLUX - SEA
1 stop33h 45mKLM
Deal found 1/7$471

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 January 8, 2026.
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

Mon 1/26

2:04 pm-9:05 pm

2 stops22h 01m

Luxembourg

Mon 2/9

9:55 pm-4:55 pm

1 stop28h 00m

$414

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 2/22

2:15 pm-1:50 pm

1 stop14h 35m

Luxembourg

Sun 3/1

10:55 am-11:35 am

1 stop33h 40m

$463

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 3/1

8:30 am-10:35 am

2 stops17h 05m

Luxembourg

Wed 5/13

10:50 am-5:39 pm

1 stop15h 49m

$463

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 3/1

11:45 am-4:20 pm

2 stops19h 35m

Luxembourg

Wed 5/13

11:40 am-11:39 pm

2 stops20h 59m

$464

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 1/26

3:10 pm-10:20 pm

1 stop22h 10m

Luxembourg

Mon 2/9

10:55 am-11:40 am

1 stop33h 45m

$473

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 2/22

1:52 pm-4:20 pm

2 stops17h 28m

Luxembourg

Sun 3/1

6:15 pm-11:04 pm

2 stops37h 49m

$486

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 3/1

6:10 am-10:25 am

2 stops19h 15m

Luxembourg

Wed 5/13

6:05 am-4:55 pm

2 stops19h 50m

$487

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sat 2/21

6:00 am-10:25 am

2 stops19h 25m

Luxembourg

Sat 2/28

10:55 am-10:22 pm

2 stops20h 27m

$493

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 2/22

10:03 am-4:05 pm

3 stops45h 02m

$356

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 2/22

1:37 pm-4:20 pm

2 stops17h 43m

$376

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 18 results
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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 January.
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’s the top layover airport for flights from Seattle to Luxembourg?

Share of 1-stop round-trip flights from Seattle to Luxembourg chosen by Cheapflights users in the past 12 months, using the same layover each way.

Frankfurt am Main (FRA) – chosen by Cheapflights users on 86% of 1-stop itineraries from Seattle to Luxembourg on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to Luxembourg?

Average round-trip fare for 1-stop flights from Seattle to Luxembourg, chosen by Cheapflights users in the past 12 months, with the same layover each way.

London (LHR) is the most affordable 1-stop option, with an average round-trip price of $524.

What’s the fastest layover option from Seattle to Luxembourg?

Shortest average travel time for 1-stop one-way flights from Seattle to Luxembourg, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via London (LHR) have the shortest average one-way travel time for 1-stop routes: 12h 20m.

Which airport typically offers the quickest layover for flights from Seattle to Luxembourg?

Average layover duration for 1-stop one-way flights from Seattle to Luxembourg, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via London (LHR) offer the fastest connection on this route, with an average layover time of 2h 28m.

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 January 8, 2026.
Read through reviews of airlines operating flights from Seattle to Luxembourg, such as SWISS, Air France, and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.5
Good
1,840 reviews

Crew

8.3

Overall

7.5

Food

7.1

Comfort

7.4

Boarding

7.7

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.
SWISS
7.5
Good
1,840 reviews
SWISS
7.5
Good
1,840 reviews

Crew

8.3

Overall

7.5

Food

7.1

Comfort

7.4

Boarding

7.7

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.
Air France
7.4
Good
1,519 reviews
SWISS
7.5
Good
1,840 reviews

Crew

8.3

Overall

7.5

Food

7.1

Comfort

7.4

Boarding

7.7

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.
Lufthansa
6.8
Okay
7,696 reviews
SWISS
7.5
Good
1,840 reviews

Crew

8.3

Overall

7.5

Food

7.1

Comfort

7.4

Boarding

7.7

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.
British Airways
6.7
Okay
7,657 reviews
SWISS
7.5
Good
1,840 reviews

Crew

8.3

Overall

7.5

Food

7.1

Comfort

7.4

Boarding

7.7

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.

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 $463, British Airways can have you in Luxembourg from Seattle in 17h 05m. 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 54% 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.

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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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 4 airlines flying from Seattle to Luxembourg

Discover the top 4 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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$306Average$306FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$396Average$528FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$449Average$561FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$591Average$727FlexibilityNo cancel feeOn-time76%

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