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Luxembourg

$440+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Aug 26 — Sep 21
Tue 8/26
Tue 9/2
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Luxembourg are usually found in August or November, booked 77 days in advance, depart on a Wednesday or Tuesday and return on a Friday

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 August 21, 2025.

Round-trip from

$440
(British Airways)

Popular in

June

Cheapest in

August

Average price

$462
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 August 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 August 21, 2025.

This British Airways deal was found by Cheapflights users on 8/20. 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.
Wed 11/56:50 pmSEA - LUX
1 stop17h 20mBritish Airways
Tue 11/189:55 pmLUX - SEA
1 stop28h 00mBritish Airways
Deal found 8/20$440
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Wed 10/152:20 pmSEA - LUX
1 stop14h 30mLufthansa
Wed 10/226:15 amLUX - SEA
1 stop14h 40mLufthansa
Deal found 8/21$491
This American Airlines deal was found by Cheapflights users on 8/21. 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 10/121:30 pmSEA - LUX
1 stop12h 15mAmerican Airlines
Mon 10/279:55 pmLUX - SEA
1 stop22h 35mAmerican Airlines
Deal found 8/21$493
This British Airways deal was found by Cheapflights users on 8/21. 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.
Sun 10/128:20 pmSEA - LUX
1 stop15h 00mBritish Airways
Thu 10/2311:40 amLUX - SEA
1 stop15h 40mBritish Airways
Deal found 8/21$495
This American Airlines deal was found by Cheapflights users on 8/21. 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 10/157:55 amSEA - LUX
2 stops17h 50mMultiple Airlines
Wed 10/2211:40 amLUX - SEA
2 stops21h 47mMultiple Airlines
Deal found 8/21$508
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Wed 11/57:00 amSEA - LUX
2 stops24h 20mUnited Airlines
Tue 11/189:30 amLUX - SEA
3 stops22h 45mUnited Airlines
Deal found 8/20$518
This FlightHub deal was found by Cheapflights users on 8/21. 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.
Tue 10/1410:00 amSEA - LUX
2 stops18h 25mMultiple Airlines
Wed 10/226:15 amLUX - SEA
1 stop14h 40mMultiple Airlines
Deal found 8/21$520
This Lufthansa deal was found by Cheapflights users on 8/21. 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.
Wed 10/156:50 pmSEA - LUX
1 stop12h 20mLufthansa
Thu 10/236:15 amLUX - SEA
2 stops17h 01mLufthansa
Deal found 8/21$522

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 August 21, 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 11/5

6:50 pm-9:10 pm

1 stop17h 20m

Luxembourg

Tue 11/18

9:55 pm-4:55 pm

1 stop28h 00m

$440

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 10/15

2:20 pm-1:50 pm

1 stop14h 30m

Luxembourg

Wed 10/22

6:15 am-11:55 am

1 stop14h 40m

$491

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 10/12

1:30 pm-10:45 am

1 stop12h 15m

Luxembourg

Mon 10/27

9:55 pm-12:30 pm

1 stop22h 35m

$493

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 10/14

1:30 pm-10:40 am

1 stop12h 10m

Luxembourg

Wed 10/22

11:40 am-6:20 pm

1 stop15h 40m

$495

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 10/12

8:20 pm-8:20 pm

1 stop15h 00m

Luxembourg

Mon 10/20

9:05 pm-11:10 am

1 stop23h 05m

$495

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 10/13

8:20 pm-9:15 pm

1 stop15h 55m

Luxembourg

Fri 10/24

11:25 am-6:20 pm

1 stop15h 55m

$495

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 10/13

8:20 pm-9:15 pm

1 stop15h 55m

Luxembourg

Thu 10/23

11:40 am-6:20 pm

1 stop15h 40m

$495

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 10/14

1:30 pm-10:40 am

1 stop12h 10m

Luxembourg

Tue 10/21

11:30 am-6:20 pm

1 stop15h 50m

$495

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 10/15

1:30 pm-10:45 am

1 stop12h 15m

Luxembourg

Fri 10/24

11:25 am-6:20 pm

1 stop15h 55m

$495

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 10/14

8:20 pm-8:50 pm

1 stop15h 30m

Luxembourg

Mon 10/20

9:05 pm-11:10 am

1 stop23h 05m

$495

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

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

How far ahead should I book a flight from Seattle to Luxembourg?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Luxembourg. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Luxembourg, you should look to book at least 70 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $1,173). 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 August 21, 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 August 21, 2025.
Read through reviews of airlines operating flights from Seattle to Luxembourg, such as Delta, KLM, and Air France. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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!
KLM
7.8
Good
1,388 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,344 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,291 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

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 $493, British Airways can have you in Luxembourg from Seattle in 12h 15m. 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?

    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 $1,173). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 August 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$396Average$521FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$455Average$695FlexibilityNo cancel feeOn-time77%
DeltaCheapest$496Average$742FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$576Average$692FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$601Average$772FlexibilityNo cancel feeOn-time76%

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