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Luxembourg

$470+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Luxembourg are usually found in November or January, booked 74 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 July 3, 2025.

Round-trip from

$470
(Air France)

Popular in

June

Cheapest in

November

Average price

$908
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 3, 2025.

This Air France deal was found by Cheapflights users on 7/3. 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.
Sun 8/171:30 pmSEA - LUX
1 stop15h 20mAir France
Sun 8/2410:50 amLUX - SEA
1 stop15h 45mAir France
Deal found 7/3$470
This British Airways deal was found by Cheapflights users on 6/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/191:30 pmSEA - LUX
1 stop12h 10mBritish Airways
Wed 8/279:35 pmLUX - SEA
1 stop23h 00mBritish Airways
Deal found 6/30$471
This American Airlines deal was found by Cheapflights users on 7/2. 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 9/177:48 amSEA - LUX
2 stops17h 57mAmerican Airlines
Thu 11/2011:00 amLUX - SEA
2 stops22h 53mAmerican Airlines
Deal found 7/2$484
This Delta deal was found by Cheapflights users on 7/3. 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.
Sun 8/179:40 amSEA - LUX
2 stops22h 35mDelta
Sun 8/2410:30 amLUX - SEA
1 stop14h 25mDelta
Deal found 7/3$489
This United Airlines deal was found by Cheapflights users on 7/2. 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 11/59:25 amSEA - LUX
3 stops21h 45mUnited Airlines
Fri 1/239:30 amLUX - SEA
2 stops21h 26mUnited Airlines
Deal found 7/2$515
This Lufthansa deal was found by Cheapflights users on 7/3. 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.
Tue 8/191:45 pmSEA - LUX
2 stops14h 40mMultiple Airlines
Wed 8/276:15 amLUX - SEA
1 stop14h 40mMultiple Airlines
Deal found 7/3$521
This Lufthansa deal was found by Cheapflights users on 7/3. 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.
Tue 8/197:00 amSEA - LUX
2 stops27h 35mLufthansa
Wed 8/2710:40 amLUX - SEA
2 stops19h 02mLufthansa
Deal found 7/3$538
This SWISS deal was found by Cheapflights users on 7/2. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/164:20 pmSEA - LUX
1 stop32h 20mSWISS
Sat 8/237:10 pmLUX - SEA
2 stops36h 49mSWISS
Deal found 7/2$608

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 3, 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

Sun 8/17

1:30 pm-1:50 pm

1 stop15h 20m

Luxembourg

Sun 8/24

10:50 am-5:35 pm

1 stop15h 45m

$470

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/19

1:30 pm-10:40 am

1 stop12h 10m

Luxembourg

Wed 8/27

9:35 pm-11:35 am

1 stop23h 00m

$471

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 9/17

7:48 am-10:45 am

2 stops17h 57m

Luxembourg

Thu 11/20

11:00 am-12:53 am

2 stops22h 53m

$484

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 8/17

9:40 am-5:15 pm

2 stops22h 35m

Luxembourg

Sun 8/24

10:30 am-3:55 pm

1 stop14h 25m

$489

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 11/5

9:25 am-4:10 pm

3 stops21h 45m

Luxembourg

Fri 1/23

9:30 am-9:56 pm

2 stops21h 26m

$515

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/19

1:45 pm-1:25 pm

2 stops14h 40m

Luxembourg

Wed 8/27

6:15 am-11:55 am

1 stop14h 40m

$521

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 8/19

7:00 am-7:35 pm

2 stops27h 35m

Luxembourg

Wed 8/27

10:40 am-8:42 pm

2 stops19h 02m

$538

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sat 8/16

4:20 pm-9:40 am

1 stop32h 20m

Luxembourg

Sat 8/23

7:10 pm-10:59 pm

2 stops36h 49m

$608

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

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 June 27, 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 $1,175). 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 July 3, 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.

What is the cheapest day to fly from Seattle to Luxembourg?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Luxembourg. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Luxembourg flight should consider departing on Sunday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 3, 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
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
7,970 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
1,473 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
1,654 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
8,845 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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

    Air France, at $470, was found to be the cheapest airline from Seattle to Luxembourg.Alternate airlines to your destination round-trip include British Airways and American Airlines. Air France is 31% 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 $1,175). 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

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 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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$440Average$526FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$443Average$629FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$449Average$730FlexibilityNo 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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