$478 Cheap Flights from Luxembourg (LUX) to Seattle (SEA)

View $478 flight on Fri, Jan 30, 2026Opens in a new window

Popular airlines from Findel International Airport (LUX) to Seattle-Tacoma International Airport (SEA)

Cheap Flights from Luxembourg to Seattle (LUX-SEA)

Prices were available within the past 7 days and start at $478 for one-way flights and $771 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Nov 21 - Thu, Nov 27
LUX
Luxembourg
SEA
Seattle
$771 Roundtrip, found 3 days ago
$771
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Nov 21 from Luxembourg to Seattle, returning Thu, Nov 27, priced at $771 found 3 days ago
British Airways
Fri, Jan 16 - Tue, Jan 20
LUX
Luxembourg
SEA
Seattle
$773 Roundtrip, found 5 days ago
$773
Roundtrip
found 5 days ago
Select British Airways flight, departing Fri, Jan 16 from Luxembourg to Seattle, returning Tue, Jan 20, priced at $773 found 5 days ago
Air Dolomiti
Sat, Nov 22 - Mon, Dec 1
LUX
Luxembourg
SEA
Seattle
$778 Roundtrip, found 3 days ago
$778
Roundtrip
found 3 days ago
Select Air Dolomiti flight, departing Sat, Nov 22 from Luxembourg to Seattle, returning Mon, Dec 1, priced at $778 found 3 days ago
American Airlines
Sat, Nov 22 - Thu, Nov 27
LUX
Luxembourg
SEA
Seattle
$781 Roundtrip, found 3 days ago
$781
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Nov 22 from Luxembourg to Seattle, returning Thu, Nov 27, priced at $781 found 3 days ago
American Airlines
Fri, Nov 21 - Tue, Nov 25
LUX
Luxembourg
SEA
Seattle
$785 Roundtrip, found 3 days ago
$785
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Nov 21 from Luxembourg to Seattle, returning Tue, Nov 25, priced at $785 found 3 days ago
British Airways
Fri, Jan 16 - Tue, Jan 20
LUX
Luxembourg
SEA
Seattle
$788 Roundtrip, found 5 days ago
$788
Roundtrip
found 5 days ago
Select British Airways flight, departing Fri, Jan 16 from Luxembourg to Seattle, returning Tue, Jan 20, priced at $788 found 5 days ago
American Airlines
Sat, Nov 22 - Tue, Nov 25
LUX
Luxembourg
SEA
Seattle
$795 Roundtrip, found 3 days ago
$795
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Nov 22 from Luxembourg to Seattle, returning Tue, Nov 25, priced at $795 found 3 days ago
British Airways
Fri, Jan 16 - Tue, Jan 20
LUX
Luxembourg
SEA
Seattle
$798 Roundtrip, found 5 days ago
$798
Roundtrip
found 5 days ago
Select British Airways flight, departing Fri, Jan 16 from Luxembourg to Seattle, returning Tue, Jan 20, priced at $798 found 5 days ago
Delta
Tue, Nov 25 - Mon, Dec 1
LUX
Luxembourg
SEA
Seattle
$802 Roundtrip, found 3 days ago
$802
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Nov 25 from Luxembourg to Seattle, returning Mon, Dec 1, priced at $802 found 3 days ago
Air Canada
Fri, Jan 16 - Tue, Jan 20
LUX
Luxembourg
SEA
Seattle
$808 Roundtrip, found 5 days ago
$808
Roundtrip
found 5 days ago
Select Air Canada flight, departing Fri, Jan 16 from Luxembourg to Seattle, returning Tue, Jan 20, priced at $808 found 5 days ago

Frequently asked questions

How much does a flight from Findel Airport (LUX) to Seattle - Tacoma Intl. Airport (SEA) cost?
Secure a cheap one-way flight from $478 or cheap return flight from $771 from Findel Airport (LUX) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Findel Airport (LUX) to Seattle - Tacoma Intl. Airport (SEA)?
Planning your getaway for November can help you save, as it's the cheapest month for flights between LUX and SEA. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Findel Airport (LUX) to Seattle - Tacoma Intl. Airport (SEA)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest LUX to SEA flight.
How many flights per day from Findel Airport (LUX) to Seattle - Tacoma Intl. Airport (SEA)?
You'll need to book a flight with a layover if you're traveling from Findel Airport (LUX) to Seattle - Tacoma Intl. Airport (SEA). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from LUX to SEA?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Findel Airport (LUX) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid possible delays on the Findel Airport (LUX) to Seattle - Tacoma Intl. Airport (SEA) route, travel before 3 PM. Later flights are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Findel Airport (LUX) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Last-minute bookings from LUX to SEA are typically more expensive. To lock in the cheapest rates, start looking for flights as soon as possible. That said, if you're flexible with your travel plans, you may find a cheap fare right before you leave.
Is it cheaper to book a LUX to SEA flight and hotel package?
Securing a LUX to SEA flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our impressive range of hotels and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Findel Airport (LUX) to Seattle - Tacoma Intl. Airport (SEA)?
In most instances, you can modify or cancel your LUX to SEA flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you want more details, head to our Customer Service portal.

Travel information

Origin airport
Findel
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Austrian Airlines, British Airways, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$771
Distance
5059 mi

Book with confidence

Luxembourg to Seattle Flights

The cheapest times to fly from Luxembourg to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Luxembourg to Seattle are during the month of November. You can find some of the cheapest flights from Luxembourg to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Luxembourg to Seattle

Sunday is one of the best days to book for cheap flights from Luxembourg to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Luxembourg to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Luxembourg to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $478 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Luxembourg to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Luxembourg to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Luxembourg to Seattle Flights

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*Available to One Key members.