The cheapest times to fly from LYS to SEA are

  • January 8th to March 25th
  • May 7th to July 1st
  • early to mid October
  • November 5th to December 16th

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 LYS to SEA is late May to early June. Prices can be as high as $1693 for Saturday flights during late July, or as low as $526 for Sunday flights around late May to early June.


When to Fly to Seattle

Flying from Lyon (LYS) to Seattle, WA (SEA) will usually cost between $726 to $1505 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late May to early June with an average ticket price of $715. Due to high demand the most expensive time to fly is late July, with an average price of $1540. Planning your trip to low-cost times can easily save you $824 on economy flights and even more on first-class flights. Generally, any price below $888 can be considered a good price for a round-trip LYS to SEA flight.

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

LYS to SEA Flight Prices

Compared to other flights, the LYS to SEA flight is cheaper than the average and costs slightly more than the average flight leaving from Lyon. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Sunday is usually the cheapest day to fly to SEA, and Tuesday the cheapest day to fly back into LYS. 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 $132 (11%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Sunday and returning a week later will cost an average of $912. Return trip prices are from the SEA to LYS 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 LYS 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 26 minutes may not be realistic.


Flight Hacking LYS 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 LYS to SEA — but Champion Traveler does!

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

  • Price for both tickets: $582
  • Average savings: $306 (34.46%)

See LYS to LGW flights

Hack #2: London (LYS > LGW > SEA)

  • Price for both tickets: $612
  • Average savings: $277 (31.14%)

See LYS to LHR flights

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

  • Price for both tickets: $623
  • Average savings: $265 (29.84%)

See LYS to CPH flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 22 major airlines flying this route most often: Aer Lingus, Air Canada, Air France, Air New Zealand, Alaska, Alitalia, American, atlasglobal, Austrian, British Airways, Brussels Airlines, Delta, Finnair, Iberia, JetBlue, KLM, Lufthansa, Singapore Airlines, 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 Lyon Saint Exupery Airport?

The distance between the two airports is roughly 5255 miles or 8457 kilometers.

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

The real-world flight time for a nonstop LYS to SEA flight is about 10 hour 26 minutes.

How many flights go between Lyon and Seattle, WA?

It depends on the day of the week and the date, but a typical day might have around 17 available flights from LYS to SEA.


Airport Location Info


Departing Airport

Origination code LYS
Origination airport name Lyon Saint Exupery Airport
City Lyon
Country France
Latitude 45.7
Longitude 5.1

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.