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Luxembourg

$310+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Jul 16 — Jul 231
Wed 7/16
Wed 7/23
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 July 11, 2025.

Round-trip from

$449
(Cheapflightsfares)

One-way from

$310
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$908
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 ($164 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:30 pmSEA - LUX
1 stop12h 10mBritish Airways
Tue 11/410:15 amLUX - SEA
1 stop15h 40mBritish Airways
Deal found 7/8$449
This American Airlines deal was found by Cheapflights users on 7/10. 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.
Tue 12/911:56 amSEA - LUX
2 stops18h 04mMultiple Airlines
Wed 12/1711:00 amLUX - SEA
2 stops20h 24mMultiple Airlines
Deal found 7/10$453
This Air France deal was found by Cheapflights users on 7/9. 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 8/46:40 pmSEA - LUX
1 stop18h 05mAir France
Wed 8/2010:50 amLUX - SEA
1 stop15h 45mAir France
Deal found 7/9$457
This Delta deal was found by Cheapflights users on 7/8. 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 8/46:10 amSEA - LUX
2 stops18h 50mDelta
Wed 8/2010:30 amLUX - SEA
1 stop14h 25mDelta
Deal found 7/8$476
This Lufthansa deal was found by Cheapflights users on 7/7. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/82:00 pmSEA - LUX
1 stop14h 50mLufthansa
Tue 12/168:20 amLUX - SEA
1 stop12h 50mLufthansa
Deal found 7/7$498
This United Airlines deal was found by Cheapflights users on 7/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/103:10 pmSEA - LUX
1 stop16h 00mUnited Airlines
Tue 12/168:20 amLUX - SEA
3 stops49h 39mUnited Airlines
Deal found 7/7$500

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 July 11, 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

Tue 10/7

1:30 pm-10:40 am

1 stop12h 10m

Luxembourg

Tue 11/4

10:15 am-4:55 pm

1 stop15h 40m

$449

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 12/9

11:56 am-3:00 pm

2 stops18h 04m

Luxembourg

Wed 12/17

11:00 am-10:24 pm

2 stops20h 24m

$453

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 8/4

6:40 pm-9:45 pm

1 stop18h 05m

Luxembourg

Wed 8/20

10:50 am-5:35 pm

1 stop15h 45m

$457

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 8/4

6:10 am-10:00 am

2 stops18h 50m

Luxembourg

Wed 8/20

10:30 am-3:55 pm

1 stop14h 25m

$476

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 12/8

2:00 pm-1:50 pm

1 stop14h 50m

Luxembourg

Tue 12/16

8:20 am-12:10 pm

1 stop12h 50m

$498

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 12/10

3:10 pm-4:10 pm

1 stop16h 00m

Luxembourg

Tue 12/16

8:20 am-12:59 am

3 stops49h 39m

$500

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 8/10

6:40 pm-6:35 pm

3 stops38h 55m

$310

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 8/11

6:40 pm-9:45 pm

1 stop18h 05m

$392

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 12/22

8:00 pm-4:10 pm

2 stops35h 10m

$397

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sat 8/9

12:20 am-4:10 pm

2 stops30h 50m

$401

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

Showing 1-10 of 14 results
1
2

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 July 11, 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 July 11, 2025.
Read through reviews of airlines operating flights from Seattle to Luxembourg, such as Delta, Air France, and SWISS. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,952 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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
7,952 reviews
Delta
8.0
Very good
7,952 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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
7.5
Good
1,467 reviews
Delta
8.0
Very good
7,952 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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!
SWISS
7.5
Good
1,655 reviews
Delta
8.0
Very good
7,952 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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!
United Airlines
7.4
Good
8,846 reviews
Delta
8.0
Very good
7,952 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,952 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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.

  • 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.

  • What are the cheapest airlines to fly from Seattle to Luxembourg one-way?

    To fly one-way, consider booking your trip with Air France, which is currently one of the cheapest options available, starting at $392. Air Canada flights start at $397 while deals on United Airlines start at $401 one-way.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Luxembourg

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Top 6 airlines flying from Seattle to Luxembourg

Discover the top 6 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 July 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$440Average$526FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$443Average$629FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$456Average$711FlexibilityNo cancel feeOn-time77%
DeltaCheapest$521Average$740FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$576Average$692FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$601Average$763FlexibilityNo cancel feeOn-time76%

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