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Luxembourg

$364+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$461
(Air France)

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 17, 2025.

This Air France deal was found by Cheapflights users on 9/17. 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 20mMultiple Airlines
Mon 11/32:45 pmLUX - SEA
1 stop30h 00mMultiple Airlines
Deal found 9/17$461
This Delta deal was found by Cheapflights users on 9/17. 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 10/2010:05 pmSEA - LUX
2 stops30h 40mDelta
Mon 11/32:45 pmLUX - SEA
1 stop30h 00mDelta
Deal found 9/17$475
This KLM deal was found by Cheapflights users on 9/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/145:40 pmSEA - LUX
1 stop19h 45mMultiple Airlines
Wed 10/227:30 amLUX - SEA
1 stop12h 45mMultiple Airlines
Deal found 9/17$501
This Delta deal was found by Cheapflights users on 9/17. 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 10/1410:25 amSEA - LUX
2 stops18h 20mDelta
Wed 10/226:05 amLUX - SEA
1 stop14h 45mDelta
Deal found 9/17$506
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 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 9/15. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/171:30 pmSEA - LUX
1 stop15h 20mAir France
Wed 10/297:30 amLUX - SEA
1 stop14h 50mAir France
Deal found 9/15$577
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/172:55 pmSEA - LUX
2 stops19h 40mAir Canada
Wed 10/297:10 amLUX - SEA
2 stops23h 06mAir Canada
Deal found 9/15$579
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/172:55 pmSEA - LUX
2 stops19h 40mMultiple Airlines
Wed 10/299:30 amLUX - SEA
1 stop12h 50mMultiple Airlines
Deal found 9/15$584

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 17, 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

Mon 10/20

1:30 pm-1:50 pm

1 stop15h 20m

Luxembourg

Mon 11/3

2:45 pm-11:45 am

1 stop30h 00m

$461

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 10/20

10:05 pm-1:45 pm

2 stops30h 40m

Luxembourg

Mon 11/3

2:45 pm-11:45 am

1 stop30h 00m

$475

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 10/14

5:40 pm-10:25 pm

1 stop19h 45m

Luxembourg

Wed 10/22

7:30 am-11:15 am

1 stop12h 45m

$501

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 10/14

10:25 am-1:45 pm

2 stops18h 20m

Luxembourg

Wed 10/22

6:05 am-11:50 am

1 stop14h 45m

$506

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

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

Fri 10/17

1:30 pm-1:50 pm

1 stop15h 20m

Luxembourg

Wed 10/29

7:30 am-2:20 pm

1 stop14h 50m

$577

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Fri 10/17

2:55 pm-7:35 pm

2 stops19h 40m

Luxembourg

Wed 10/29

7:10 am-10:16 pm

2 stops23h 06m

$579

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

Showing 1-10 of 13 results
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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 $1,169). 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 September 17, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 25% 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 September 17, 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
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
1,468 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
7,409 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
7,367 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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.

  • How long is the flight from Seattle to Luxembourg?

    For as low as $475, Delta can have you in Luxembourg from Seattle in 30h 40m. Seattle and Luxembourg are separated by a distance of 5057 mi.

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

    British Airways, at $396, was found to be the cheapest airline from Seattle to Luxembourg.Alternate airlines to your destination round-trip include Air France and Delta. British Airways is 41% 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, 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 $1,169). 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 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 17, 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$760FlexibilityNo cancel feeOn-time76%

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