HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Luxembourg

$386+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Luxembourg with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$495
(British Airways)

One-way from

$386
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$520
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. 36% potential increase in price ($443 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 February 20, 2025.

This British Airways deal was found by Cheapflights users on 2/20. 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 3/107:50 pmSEA - LUX
1 stop12h 20mBritish Airways
Mon 3/245:10 pmLUX - SEA
1 stop27h 10mBritish Airways
Deal found 2/20$495
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 3/101:50 pmSEA - LUX
2 stops18h 20mAmerican Airlines
Wed 3/1911:00 amLUX - SEA
2 stops20h 07mAmerican Airlines
Deal found 2/20$507
This KLM deal was found by Cheapflights users on 2/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/512:35 pmSEA - LUX
1 stop13h 00mMultiple Airlines
Mon 3/176:20 pmLUX - SEA
1 stop26h 20mMultiple Airlines
Deal found 2/20$527
This Delta deal was found by Cheapflights users on 2/20. 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 3/97:15 amSEA - LUX
2 stops19h 05mDelta
Thu 3/202:45 pmLUX - SEA
1 stop29h 55mDelta
Deal found 2/20$531
This United Airlines deal was found by Cheapflights users on 2/20. 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 3/256:15 amSEA - LUX
3 stops26h 15mUnited Airlines
Thu 4/39:50 amLUX - SEA
2 stops20h 53mUnited Airlines
Deal found 2/20$552
This Air France deal was found by Cheapflights users on 2/18. 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 4/135:10 pmSEA - LUX
2 stops15h 45mKLM
Tue 4/226:10 amLUX - SEA
1 stop18h 50mKLM
Deal found 2/18$578
This Expedia deal was found by Cheapflights users on 2/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/133:05 pmSEA - LUX
2 stops16h 05mAir Canada
Tue 4/226:15 amLUX - SEA
2 stops24h 11mAir Canada
Deal found 2/18$602
This Lufthansa deal was found by Cheapflights users on 2/20. 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.
Wed 3/123:00 pmSEA - LUX
1 stop14h 55mLufthansa
Fri 3/217:00 amLUX - SEA
1 stop14h 10mLufthansa
Deal found 2/20$640
This SWISS deal was found by Cheapflights users on 2/20. 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.
Mon 3/33:24 pmSEA - LUX
2 stops17h 46mSWISS
Tue 3/182:55 pmLUX - SEA
2 stops39h 58mSWISS
Deal found 2/20$746
This Turkish Airlines deal was found by Cheapflights users on 2/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/138:00 pmSEA - LUX
1 stop30h 45mTurkish Airlines
Sat 3/2211:40 amLUX - SEA
1 stop38h 25mTurkish Airlines
Deal found 2/20$883
This Air France deal was found by Cheapflights users on 2/20. 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.
Tue 3/49:55 amSEA - LUX
2 stops15h 40mAir France
Sun 3/1610:50 amLUX - SEA
2 stops16h 15mAir France
Deal found 2/20$1,008

Find flights from Seattle to Luxembourg within your budget

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 February 20, 2025.

Fly from

Seattle

Fly to

Luxembourg

Route

Depart

Return

Price

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 3/10

7:50 pm-4:10 pm

1 stop12h 20m

Luxembourg

Mon 3/24

5:10 pm-12:20 pm

1 stop27h 10m

$495

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 3/10

1:50 pm-4:10 pm

2 stops18h 20m

Luxembourg

Wed 3/19

11:00 am-11:07 pm

2 stops20h 07m

$507

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 3/5

12:35 pm-10:35 am

1 stop13h 00m

Luxembourg

Mon 3/17

6:20 pm-12:40 pm

1 stop26h 20m

$527

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 3/9

7:15 am-10:20 am

2 stops19h 05m

Luxembourg

Thu 3/20

2:45 pm-12:40 pm

1 stop29h 55m

$531

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Tue 3/25

6:15 am-4:30 pm

3 stops26h 15m

Luxembourg

Thu 4/3

9:50 am-9:43 pm

2 stops20h 53m

$552

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 4/13

5:10 pm-5:55 pm

2 stops15h 45m

Luxembourg

Tue 4/22

6:10 am-4:00 pm

1 stop18h 50m

$578

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Sun 4/13

3:05 pm-4:10 pm

2 stops16h 05m

Luxembourg

Tue 4/22

6:15 am-9:26 pm

2 stops24h 11m

$602

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Wed 3/12

3:00 pm-1:55 pm

1 stop14h 55m

Luxembourg

Fri 3/21

7:00 am-1:10 pm

1 stop14h 10m

$640

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Mon 3/3

3:24 pm-6:10 pm

2 stops17h 46m

Luxembourg

Tue 3/18

2:55 pm-10:53 pm

2 stops39h 58m

$746

SeattleLuxembourg

SEA - LUX

SEALUX

Seattle/Tacoma Intl

Thu 3/13

8:00 pm-10:45 am

1 stop30h 45m

Luxembourg

Sat 3/22

11:40 am-6:05 pm

1 stop38h 25m

$883

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 17 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.

Travel insights for flights from Seattle to Luxembourg

Get recent, data-driven insights about flights from Seattle to Luxembourg including ideal travel times, pricing trends, and more.

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 $1,238). 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 February 20, 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.

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 February 20, 2025.
Read through reviews of airlines operating flights from Seattle to Luxembourg, such as Delta, KLM and SWISS. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,449 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 Lufthansa, which is currently one of the cheapest options available, starting at $452. British Airways flights start at $473 while deals on United Airlines start at $480 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 $1,238). 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.
Seattle to Heathrow flights
Seattle to Charles de Gaulle flights
Seattle to Dublin flights
Seattle to Gatwick flights
Seattle to Istanbul flights
Seattle to London City flights
Seattle to Amsterdam flights
Seattle to Frankfurt flights
Portland to Heathrow flights
Seattle to Orly flights
Seattle to Leonardo da Vinci/Fiumicino flights
Seattle to Keflavik Intl flights
Seattle to Lisbon flights
Seattle to Barcelona-El Prat flights
Seattle to Madrid flights
Seattle to Athens flights
Seattle to Copenhagen flights
Seattle to Bruxelles-National flights
Portland to Charles de Gaulle flights
Seattle to Zurich flights
Portland to Gatwick flights
Seattle to Oslo Gardermoen flights
Seattle to Munich flights
Seattle to Sabiha Gokcen flights
Seattle to Geneva flights
Portland to Dublin flights
Portland to London City flights
Portland to Amsterdam flights
Seattle to Malpensa flights
Portland to Leonardo da Vinci/Fiumicino flights
Seattle to Vicenza flights
Portland to Orly flights
Seattle to Edinburgh flights
Portland to Lisbon flights
Seattle to Berlin flights
Portland to Athens flights
Seattle to Vienna flights
Seattle to Linate flights
Seattle to Manchester flights
Seattle to Naples flights
Seattle to Florence flights
Portland to Barcelona-El Prat flights
Portland to Madrid flights
Portland to Keflavik Intl flights
Seattle to Prague flights
Portland to Vicenza flights
Portland to Frankfurt flights
Seattle to Porto flights
Seattle to Glasgow Intl flights
Seattle to Budapest 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$443Average$558FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$473Average$569FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$510Average$808FlexibilityNo cancel feeOn-time77%
DeltaCheapest$569Average$742FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$592Average$758FlexibilityNo cancel feeOn-time76%
KLMCheapest$613Average$692FlexibilityNo cancel feeOn-time75%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.