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Luxembourg

$344+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
May 2 — May 91
Sat 5/2
Sat 5/9
1 adult, Economy
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Cheap 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 April 2, 2026.

This Justfly.com deal was found by Cheapflights users on 3/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:55 pm
SEA
-
LUX
1 stop18h 20m
Scandinavian Airlines
Thu 10/17:55 pm
LUX
-
SEA
1 stop26h 50m
Scandinavian Airlines
Deal found 3/28$617
This Gotogate deal was found by Cheapflights users on 3/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:00 am
SEA
-
LUX
2 stops20h 55m
Multiple Airlines
Tue 5/126:05 am
LUX
-
SEA
1 stop15h 15m
Multiple Airlines
Deal found 3/30$683
This Gotogate deal was found by Cheapflights users on 3/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:00 am
SEA
-
LUX
2 stops40h 30m
Air Canada
Tue 5/122:25 pm
LUX
-
SEA
2 stops39h 43m
Air Canada
Deal found 3/30$687
This FlightHub deal was found by Cheapflights users on 3/31. 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.
Wed 5/66:50 pm
SEA
-
LUX
1 stop12h 20m
Lufthansa
Tue 5/128:30 am
LUX
-
SEA
1 stop12h 50m
Lufthansa
Deal found 3/31$691
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/296:50 pm
SEA
-
LUX
1 stop15h 40m
United Airlines
Wed 5/139:40 am
LUX
-
SEA
1 stop16h 19m
United Airlines
Deal found 4/1$694
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Tue 8/47:01 am
SEA
-
LUX
2 stops24h 09m
United Airlines
Wed 8/198:20 am
LUX
-
SEA
1 stop12h 35m
United Airlines
Deal found 3/31$697
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Sun 5/310:53 pm
SEA
-
LUX
2 stops32h 17m
United Airlines
Wed 5/139:40 am
LUX
-
SEA
1 stop16h 19m
United Airlines
Deal found 3/30$699
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Fri 5/16:50 pm
SEA
-
LUX
1 stop15h 40m
United Airlines
Wed 5/139:40 am
LUX
-
SEA
1 stop16h 19m
United Airlines
Deal found 4/1$700
This KAYAK deal was found by Cheapflights users on 3/31. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/42:27 pm
SEA
-
LUX
2 stops20h 03m
Lufthansa
Tue 5/126:05 am
LUX
-
SEA
2 stops25h 35m
Lufthansa
Deal found 3/31$702

Find flight deals from Seattle to Luxembourg

Keep the following information in mind while searching for Seattle to Luxembourg flight deals. Data was last updated April 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$617
(Justfly.com)

One-way from

$344
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$575
Provider with most accurate pricing for Seattle/Tacoma Intl-Luxembourg flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Luxembourg flights.
Search Deals
From Seattle/Tacoma Intl to Luxembourg
Search Deals
One-way flight from Seattle/Tacoma Intl to Luxembourg
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($205 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 2, 2026.
Use the filters below to find and compare flights from Seattle to Luxembourg that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/4

6:50 pm-4:10 pm

1 stop12h 20m

Luxembourg

Wed 8/19

8:20 am-11:55 am

1 stop12h 35m

$693

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/18

5:00 am-4:10 pm

2 stops26h 10m

Luxembourg

Wed 8/26

8:20 am-11:55 am

1 stop12h 35m

$697

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 4/27

2:39 pm-7:30 pm

2 stops19h 51m

Luxembourg

Wed 5/13

9:40 am-4:59 pm

1 stop16h 19m

$699

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Thu 4/30

7:00 am-7:30 pm

2 stops27h 30m

Luxembourg

Wed 5/13

9:40 am-4:59 pm

1 stop16h 19m

$705
Cheapest one-way

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Thu 4/23

3:40 pm-5:30 pm

3 stops40h 50m

$344
Quickest one-way

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 9/27

8:20 pm-8:20 pm

1 stop15h 00m

$357

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 9/27

3:12 pm-4:00 pm

2 stops15h 48m

$366

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 9/27

11:00 am-7:30 pm

3 stops47h 30m

$548

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Sorted by cheapest first

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, August is the cheapest month in which you can book a flight from Seattle to Luxembourg (average of $306). Flying from Seattle to Luxembourg in October is currently the most expensive (average of $835). 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.

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 April 2, 2026.
Read through reviews of airlines operating flights from Seattle to Luxembourg, such as SWISS,Air France, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.5
Good
1,909 reviews

Food

7.1

Comfort

7.4

Overall

7.5

Boarding

7.7

Crew

8.3

Entertainment

6.8

Reviews

1 / 20
6.0
Good

CFJ,Mar 2026

ZRH - VCE

Swiss International Airlines is heading towards becoming a budget carrier. The seats are in comfortable and have absolutely no recline. The crew are friendly, but offer a few services. At least they all line is usually punctual.
SWISS
7.5
Good
1,909 reviews
SWISS
7.5
Good
1,909 reviews

Food

7.1

Comfort

7.4

Overall

7.5

Boarding

7.7

Crew

8.3

Entertainment

6.8

Reviews

1 / 20
6.0
Good

CFJ,Mar 2026

ZRH - VCE

Swiss International Airlines is heading towards becoming a budget carrier. The seats are in comfortable and have absolutely no recline. The crew are friendly, but offer a few services. At least they all line is usually punctual.
Air France
7.4
Good
1,559 reviews
SWISS
7.5
Good
1,909 reviews

Food

7.1

Comfort

7.4

Overall

7.5

Boarding

7.7

Crew

8.3

Entertainment

6.8

Reviews

1 / 20
6.0
Good

CFJ,Mar 2026

ZRH - VCE

Swiss International Airlines is heading towards becoming a budget carrier. The seats are in comfortable and have absolutely no recline. The crew are friendly, but offer a few services. At least they all line is usually punctual.
United Airlines
7.4
Good
9,535 reviews
SWISS
7.5
Good
1,909 reviews

Food

7.1

Comfort

7.4

Overall

7.5

Boarding

7.7

Crew

8.3

Entertainment

6.8

Reviews

1 / 20
6.0
Good

CFJ,Mar 2026

ZRH - VCE

Swiss International Airlines is heading towards becoming a budget carrier. The seats are in comfortable and have absolutely no recline. The crew are friendly, but offer a few services. At least they all line is usually punctual.
Lufthansa
6.8
Okay
7,882 reviews
SWISS
7.5
Good
1,909 reviews

Food

7.1

Comfort

7.4

Overall

7.5

Boarding

7.7

Crew

8.3

Entertainment

6.8

Reviews

1 / 20
6.0
Good

CFJ,Mar 2026

ZRH - VCE

Swiss International Airlines is heading towards becoming a budget carrier. The seats are in comfortable and have absolutely no recline. The crew are friendly, but offer a few services. At least they all line is usually punctual.
British Airways
6.7
Okay
7,842 reviews
SWISS
7.5
Good
1,909 reviews

Food

7.1

Comfort

7.4

Overall

7.5

Boarding

7.7

Crew

8.3

Entertainment

6.8

Reviews

1 / 20
6.0
Good

CFJ,Mar 2026

ZRH - VCE

Swiss International Airlines is heading towards becoming a budget carrier. The seats are in comfortable and have absolutely no recline. The crew are friendly, but offer a few services. At least they all line is usually punctual.

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 $693, United Airlines can have you in Luxembourg from Seattle in 12h 20m. Seattle and Luxembourg are separated by a distance of 5057 mi.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $74. Southwest flights start at $84 while deals on American Airlines start at $88 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, August is the cheapest month in which you can book a flight from Seattle to Luxembourg (average of $306). Flying from Seattle to Luxembourg in October is currently the most expensive (average of $835). 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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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 April 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$306Average$306FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$396Average$528FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$449Average$723FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$471Average$592FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$490Average$683FlexibilityNo cancel feeOn-time76%

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