The cheapest times to fly from LUX to SEA are

  • January 1st to April 1st
  • September 10th to April 1st (except the weeks of October 22nd, December 17th, and December 24th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from LUX to SEA is mid to late November. Prices can be as high as $1231 for Saturday flights during early August, or as low as $505 for Monday flights around mid to late November.


When to Fly to Seattle

Flying from Luxembourg (LUX) to Seattle, WA (SEA) will usually cost between $694 to $1177 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late November with an average ticket price of $720. Due to high demand the most expensive time to fly is early August, with an average price of $1173. Planning your trip to low-cost times can easily save you $453 on economy flights and even more on first-class flights. Generally, any price below $817 can be considered a good price for a round-trip LUX to SEA flight.

See below for a graph of average weekly prices for the LUX to SEA route. All prices are for round-trip tickets in USD.

LUX to SEA Flight Prices

Compared to other flights, the LUX to SEA flight is cheaper than the average and costs slightly more than the average flight leaving from Luxembourg. The average price per mile (for a direct flight) is $0.1, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to SEA, and Wednesday the cheapest day to fly back into LUX. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $110 (11%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $821. Return trip prices are from the SEA to LUX flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from LUX to SEA can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 10 hour 5 minutes may not be realistic.


Flight Hacking LUX to SEA

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from LUX to SEA — but Champion Traveler does!

Hack #1: London (LUX > LHR > SEA)

  • Price for both tickets: $562
  • Average savings: $255 (31.17%)

See LUX to DUB flights

Hack #2: Dublin (LUX > DUB > SEA)

  • Price for both tickets: $639
  • Average savings: $178 (21.74%)

See LUX to LHR flights

Hack #3: Copenhagen (LUX > CPH > SEA)

  • Price for both tickets: $650
  • Average savings: $167 (20.45%)

See LUX to CPH flights


Flight Questions Answered

Still have questions about flying from LUX to SEA? We’ve got answers.

Which airlines fly this route?

You can find 23 major airlines flying this route most often: Air Canada, Air Europa, Air France, Air New Zealand, Alaska, Alitalia, American, Austrian, British Airways, Condor, Delta, Finnair, Iberia, KLM, LOT, Lufthansa, Luxair, SAS, SWISS, Tap Air Portugal, Turkish Airlines, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Seattle/Tacoma International Airport to Luxembourg Airport?

The distance between the two airports is roughly 5059 miles or 8142 kilometers.

How long does it take to fly from LUX to SEA?

The real-world flight time for a nonstop LUX to SEA flight is about 10 hour 5 minutes.

How many flights go between Luxembourg and Seattle, WA?

It depends on the day of the week and the date, but a typical day might have around 56 available flights from LUX to SEA.


Airport Location Info


Departing Airport

Origination code LUX
Origination airport name Luxembourg Airport
City Luxembourg
Country Luxembourg
Latitude 49.6
Longitude 6.2

Return Airport

Destination code SEA
Destination airport name Seattle/Tacoma International Airport
City Seattle, WA
Country the United States
Latitude 47.5
Longitude -122.3


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.