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Luxembourg

$321+ 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Jun 8 — Jun 151
Mon 6/8
Mon 6/15
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 May 9, 2026.

This FlightHub deal was found by Cheapflights users on 5/6. 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 8/186:50 pm
SEA
-
LUX
1 stop12h 20m
Lufthansa
Wed 8/266:25 am
LUX
-
SEA
2 stops16h 57m
Lufthansa
Deal found 5/6$687
This Cheapflightsfares deal was found by Cheapflights users on 5/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/41:30 pm
SEA
-
LUX
1 stop12h 10m
British Airways
Wed 8/199:35 pm
LUX
-
SEA
1 stop23h 00m
British Airways
Deal found 5/9$689
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Tue 8/411:00 pm
SEA
-
LUX
2 stops32h 10m
United Airlines
Wed 8/198:20 am
LUX
-
SEA
1 stop12h 35m
United Airlines
Deal found 5/7$698
This Justfly.com deal was found by Cheapflights users on 5/5. 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.
Tue 8/410:45 am
SEA
-
LUX
2 stops18h 15m
Multiple Airlines
Wed 8/1910:15 am
LUX
-
SEA
2 stops17h 17m
Multiple Airlines
Deal found 5/5$701
This FlightHub deal was found by Cheapflights users on 5/5. 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 8/187:00 am
SEA
-
LUX
2 stops21h 35m
Multiple Airlines
Wed 8/2610:15 am
LUX
-
SEA
2 stops17h 17m
Multiple Airlines
Deal found 5/5$702
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Tue 8/1810:47 am
SEA
-
LUX
2 stops20h 23m
United Airlines
Wed 8/268:20 am
LUX
-
SEA
3 stops24h 04m
United Airlines
Deal found 5/7$708

Find 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 May 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$687
(FlightHub)

One-way from

$321
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$633
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. 20% potential increase in price ($168 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 9, 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

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/4

1:30 pm-10:40 am

1 stop12h 10m

Luxembourg

Wed 8/19

9:35 pm-11:35 am

1 stop23h 00m

$689

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/18

7:00 am-4:10 pm

2 stops24h 10m

Luxembourg

Wed 8/26

8:20 am-11:55 am

1 stop12h 35m

$698

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/4

11:00 pm-4:10 pm

2 stops32h 10m

Luxembourg

Wed 8/19

8:20 am-11:55 am

1 stop12h 35m

$698

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/18

7:00 am-10:00 am

2 stops18h 00m

Luxembourg

Wed 8/26

10:15 am-6:32 pm

2 stops17h 17m

$700
Quickest round-trip

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/18

2:10 pm-2:00 pm

1 stop14h 50m

Luxembourg

Wed 8/26

6:25 am-11:55 am

1 stop14h 30m

$704
Cheapest one-way

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 6/15

1:30 pm-9:30 am

3 stops35h 00m

$323
Quickest one-way

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 6/15

7:31 am-10:35 am

2 stops18h 04m

$1,325

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 6/10

9:13 am-9:50 am

3 stops39h 37m

$1,868

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Thu 6/11

10:30 am-10:45 pm

2 stops27h 15m

$2,125

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 6/15

12:35 pm-9:25 am

1 stop35h 50m

$3,106

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/8

Sorted by cheapest first

Compare providers for flights from Seattle to Luxembourg

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Luxembourg in May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Luxembourg flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Luxembourg flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Luxembourg flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Luxembourg flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Luxembourg flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $441). Flying from Seattle to Luxembourg in June is currently the most expensive (average of $1,038). 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.

How much does it cost to fly round-trip from Seattle to Luxembourg?

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 May 9, 2026.
Read through reviews of airlines operating flights from Seattle to Luxembourg, such as Air France,United Airlines, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air France
7.4
Good
1,585 reviews

Crew

8.1

Comfort

7.4

Entertainment

7.0

Overall

7.4

Food

7.0

Boarding

7.5

Reviews

1 / 20
8.0
Excellent

Grace,Apr 2026

JFK - CDG

Leg room was a bit tight and I had a hard time recovering a lost item but otherwise, great flight.
Air France
7.4
Good
1,585 reviews
Air France
7.4
Good
1,585 reviews

Crew

8.1

Comfort

7.4

Entertainment

7.0

Overall

7.4

Food

7.0

Boarding

7.5

Reviews

1 / 20
8.0
Excellent

Grace,Apr 2026

JFK - CDG

Leg room was a bit tight and I had a hard time recovering a lost item but otherwise, great flight.
United Airlines
7.4
Good
9,696 reviews
Air France
7.4
Good
1,585 reviews

Crew

8.1

Comfort

7.4

Entertainment

7.0

Overall

7.4

Food

7.0

Boarding

7.5

Reviews

1 / 20
8.0
Excellent

Grace,Apr 2026

JFK - CDG

Leg room was a bit tight and I had a hard time recovering a lost item but otherwise, great flight.
Lufthansa
6.8
Okay
7,985 reviews
Air France
7.4
Good
1,585 reviews

Crew

8.1

Comfort

7.4

Entertainment

7.0

Overall

7.4

Food

7.0

Boarding

7.5

Reviews

1 / 20
8.0
Excellent

Grace,Apr 2026

JFK - CDG

Leg room was a bit tight and I had a hard time recovering a lost item but otherwise, great flight.
British Airways
6.7
Okay
7,964 reviews
Air France
7.4
Good
1,585 reviews

Crew

8.1

Comfort

7.4

Entertainment

7.0

Overall

7.4

Food

7.0

Boarding

7.5

Reviews

1 / 20
8.0
Excellent

Grace,Apr 2026

JFK - CDG

Leg room was a bit tight and I had a hard time recovering a lost item but otherwise, great 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 $689, British Airways can have you in Luxembourg from Seattle in 12h 10m. 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 United Airlines. British Airways is 39% 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, August is the cheapest month in which you can book a flight from Seattle to Luxembourg (average of $441). Flying from Seattle to Luxembourg in June is currently the most expensive (average of $1,038). 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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Complete your trip

Complete your trip to Luxembourg by adding a car rental and/or hotel reservation to your travel itinerary.
Luxembourg Airport car rentals

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 May 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$396Average$496FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$449Average$695FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$471Average$592FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$490Average$692FlexibilityNo cancel feeOn-time76%

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