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$482+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 33 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 June 12, 2025.

Round-trip from

$482
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,010
From Seattle/Tacoma Intl to Luxembourg
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Mon 8/44:25 pmSEA - LUX
1 stop12h 10mSWISS
Wed 8/2010:30 amLUX - SEA
2 stops21h 29mSWISS
Deal found 6/11$482
This American Airlines deal was found by Cheapflights users on 6/11. 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 10/71:30 pmSEA - LUX
1 stop22h 20mAmerican Airlines
Tue 11/45:15 pmLUX - SEA
1 stop32h 40mAmerican Airlines
Deal found 6/11$488
This Lufthansa deal was found by Cheapflights users on 6/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:45 pmSEA - LUX
2 stops14h 40mMultiple Airlines
Tue 11/47:10 amLUX - SEA
1 stop14h 00mMultiple Airlines
Deal found 6/10$489
This British Airways deal was found by Cheapflights users on 6/11. 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.
Mon 8/48:20 pmSEA - LUX
1 stop16h 00mBritish Airways
Wed 8/209:35 pmLUX - SEA
1 stop23h 00mBritish Airways
Deal found 6/11$490
This Air Canada deal was found by Cheapflights users on 6/11. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:45 pmSEA - LUX
2 stops14h 40mAir Canada
Tue 11/42:30 pmLUX - SEA
2 stops40h 26mAir Canada
Deal found 6/11$495
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/78:30 amSEA - LUX
2 stops26h 05mUnited Airlines
Tue 11/48:20 amLUX - SEA
3 stops49h 39mUnited Airlines
Deal found 6/10$502
This FlightHub deal was found by Cheapflights users on 6/12. 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.
Fri 8/226:50 pmSEA - LUX
2 stops30h 20mLufthansa
Mon 9/12:30 pmLUX - SEA
2 stops39h 12mLufthansa
Deal found 6/12$639
This Air France deal was found by Cheapflights users on 6/9. 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.
Thu 7/101:30 pmSEA - LUX
1 stop12h 05mAir France
Thu 7/177:30 amLUX - SEA
1 stop18h 55mAir France
Deal found 6/9$736
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1012:15 pmSEA - LUX
2 stops20h 10mDelta
Thu 7/176:10 amLUX - SEA
1 stop14h 25mDelta
Deal found 6/9$786
This Ovago deal was found by Cheapflights users on 6/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2412:30 pmSEA - LUX
1 stop19h 55mTurkish Airlines
Fri 6/276:20 pmLUX - SEA
1 stop25h 15mTurkish Airlines
Deal found 6/10$1,680

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 June 12, 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

Mon 8/4

4:25 pm-1:35 pm

1 stop12h 10m

Luxembourg

Wed 8/20

10:30 am-10:59 pm

2 stops21h 29m

$482

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 10/7

1:30 pm-8:50 pm

1 stop22h 20m

Luxembourg

Tue 11/4

5:15 pm-4:55 pm

1 stop32h 40m

$488

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 10/7

1:45 pm-1:25 pm

2 stops14h 40m

Luxembourg

Tue 11/4

7:10 am-12:10 pm

1 stop14h 00m

$489

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 8/4

8:20 pm-9:20 pm

1 stop16h 00m

Luxembourg

Wed 8/20

9:35 pm-11:35 am

1 stop23h 00m

$490

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 10/7

1:45 pm-1:25 pm

2 stops14h 40m

Luxembourg

Tue 11/4

2:30 pm-9:56 pm

2 stops40h 26m

$495

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 10/7

8:30 am-7:35 pm

2 stops26h 05m

Luxembourg

Tue 11/4

8:20 am-12:59 am

3 stops49h 39m

$502

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Fri 8/22

6:50 pm-10:10 am

2 stops30h 20m

Luxembourg

Mon 9/1

2:30 pm-8:42 pm

2 stops39h 12m

$639

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Thu 7/10

1:30 pm-10:35 am

1 stop12h 05m

Luxembourg

Thu 7/17

7:30 am-5:25 pm

1 stop18h 55m

$736

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Thu 7/10

12:15 pm-5:25 pm

2 stops20h 10m

Luxembourg

Thu 7/17

6:10 am-11:35 am

1 stop14h 25m

$786

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 6/24

12:30 pm-5:25 pm

1 stop19h 55m

Luxembourg

Fri 6/27

6:20 pm-10:35 am

1 stop25h 15m

$1,680

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 12 results
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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 9, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Luxembourg, you should look to book at least 33 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 $1,187). 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 June 12, 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.

Rainfall in Luxembourg by month

Plan your trip to Luxembourg by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Luxembourg ranges from 2.0 - 2.8 inches per month. November is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit Luxembourg when rainfall is around 2.0 in.

Temperature in Luxembourg by month

Plan your trip to Luxembourg by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Luxembourg, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 June 12, 2025.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

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
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

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!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

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!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

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!
Turkish Airlines
7.3
Good
3,848 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

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.

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

    SWISS, at $482, was found to be the cheapest airline from Seattle to Luxembourg.Alternate airlines to your destination round-trip include American Airlines and British Airways. SWISS is 32% 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 $1,187). 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

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$443Average$629FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$473Average$537FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$510Average$765FlexibilityNo cancel feeOn-time77%
DeltaCheapest$521Average$740FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$576Average$741FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$609Average$772FlexibilityNo cancel feeOn-time76%

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