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Luxembourg

$364+ Cheap flights from Seattle (SEA) to Luxembourg

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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Seattle to Luxembourg

Keep the following information in mind while searching for Seattle to Luxembourg flight deals. Data was last updated September 15, 2025.

Round-trip from

$453
(American Airlines)

One-way from

$364
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$642
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. 19% potential increase in price ($160 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 15, 2025.

This American Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 10/297:44 amSEA - LUX
2 stops18h 31mMultiple Airlines
Wed 11/511:00 amLUX - SEA
2 stops19h 47mMultiple Airlines
Deal found 9/14$453
This Air France deal was found by Cheapflights users on 9/14. 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.
Wed 10/293:10 pmSEA - LUX
1 stop14h 40mAir France
Wed 11/57:30 amLUX - SEA
1 stop14h 50mAir France
Deal found 9/14$457
This Delta deal was found by Cheapflights users on 9/13. 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 10/205:40 pmSEA - LUX
1 stop31h 20mDelta
Mon 11/32:45 pmLUX - SEA
2 stops36h 39mDelta
Deal found 9/13$482
This Expedia deal was found by Cheapflights users on 9/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:35 pmSEA - LUX
2 stops23h 35mBritish Airways
Thu 11/611:00 amLUX - SEA
2 stops22h 58mBritish Airways
Deal found 9/15$507
This Air France deal was found by Cheapflights users on 9/13. 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 10/51:30 pmSEA - LUX
1 stop15h 20mMultiple Airlines
Mon 10/136:25 pmLUX - SEA
1 stop26h 25mMultiple Airlines
Deal found 9/13$518
This Delta deal was found by Cheapflights users on 9/15. 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 10/304:00 pmSEA - LUX
1 stop17h 50mDelta
Thu 11/66:00 amLUX - SEA
1 stop14h 45mDelta
Deal found 9/15$521
This Air France deal was found by Cheapflights users on 9/13. 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.
Mon 10/201:30 pmSEA - LUX
1 stop15h 20mAir France
Mon 11/310:50 amLUX - SEA
1 stop33h 35mAir France
Deal found 9/13$522
This Lufthansa deal was found by Cheapflights users on 9/14. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1410:00 amSEA - LUX
2 stops15h 00mLufthansa
Tue 10/216:15 amLUX - SEA
2 stops17h 01mLufthansa
Deal found 9/14$527
This Delta deal was found by Cheapflights users on 9/13. 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.
Sun 10/57:10 amSEA - LUX
2 stops21h 35mDelta
Mon 10/132:15 pmLUX - SEA
1 stop34h 50mDelta
Deal found 9/13$536

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 September 15, 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

Wed 10/29

7:44 am-10:15 am

2 stops18h 31m

Luxembourg

Wed 11/5

11:00 am-9:47 pm

2 stops19h 47m

$453

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 10/29

3:10 pm-1:50 pm

1 stop14h 40m

Luxembourg

Wed 11/5

7:30 am-1:20 pm

1 stop14h 50m

$457

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 10/20

5:40 pm-10:00 am

1 stop31h 20m

Luxembourg

Mon 11/3

2:45 pm-6:24 pm

2 stops36h 39m

$482

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Thu 10/30

1:35 pm-9:10 pm

2 stops23h 35m

Luxembourg

Thu 11/6

11:00 am-12:58 am

2 stops22h 58m

$507

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 10/5

1:30 pm-1:50 pm

1 stop15h 20m

Luxembourg

Mon 10/13

6:25 pm-11:50 am

1 stop26h 25m

$518

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Thu 10/30

4:00 pm-5:50 pm

1 stop17h 50m

Luxembourg

Thu 11/6

6:00 am-11:45 am

1 stop14h 45m

$521

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 10/14

2:20 pm-6:00 pm

1 stop18h 40m

Luxembourg

Tue 10/21

6:15 am-11:55 am

1 stop14h 40m

$527

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 10/5

7:10 am-1:45 pm

2 stops21h 35m

Luxembourg

Mon 10/13

2:15 pm-4:05 pm

1 stop34h 50m

$536

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 10/13

8:06 am-5:20 pm

3 stops48h 14m

$364

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 10/13

6:35 pm-10:35 am

1 stop31h 00m

$405

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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, February is the cheapest month in which you can book a flight from Seattle to Luxembourg (average of $638). Flying from Seattle to Luxembourg in June is currently the most expensive (average of $1,172). 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 LU?

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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Luxembourg as you normally would.

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 September 15, 2025.
Read through reviews of airlines operating flights from Seattle to Luxembourg, such as Delta, Air France, and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.4
Good
1,469 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Lufthansa
6.8
Okay
7,407 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,361 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What airport do you fly from for flights from Seattle to Luxembourg?

    If you book a flight to Luxembourg from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle.

  • How long is the flight from Seattle to Luxembourg?

    For as low as $457, Air France 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.

  • 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, February is the cheapest month in which you can book a flight from Seattle to Luxembourg (average of $638). Flying from Seattle to Luxembourg in June is currently the most expensive (average of $1,172). 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

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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.
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$396Average$546FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$449Average$695FlexibilityNo cancel feeOn-time77%
DeltaCheapest$496Average$741FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$601Average$763FlexibilityNo cancel feeOn-time76%

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