$435 Cheap Flights from Seattle (SEA) to Lyon (LYS)

View $435 flight on Sat, Feb 28, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Saint-Exupery Airport (LYS)

Cheap Flights from Seattle to Lyon (SEA-LYS)

Prices were available within the past 7 days and start at $435 for one-way flights and $577 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Tue, Nov 4 - Tue, Nov 11
SEA
Seattle
LYS
Lyon
$577 Roundtrip, found 3 days ago
$577
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Tue, Nov 4 from Seattle to Lyon, returning Tue, Nov 11, priced at $577 found 3 days ago
Air Canada
Wed, Nov 5 - Thu, Dec 4
SEA
Seattle
LYS
Lyon
$578 Roundtrip, found 6 days ago
$578
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Nov 5 from Seattle to Lyon, returning Thu, Dec 4, priced at $578 found 6 days ago
Air Canada
Fri, Jan 16 - Sun, Jan 25
SEA
Seattle
LYS
Lyon
$579 Roundtrip, found 1 day ago
$579
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Jan 16 from Seattle to Lyon, returning Sun, Jan 25, priced at $579 found 1 day ago
Lufthansa
Sun, Nov 2 - Sat, Nov 15
SEA
Seattle
LYS
Lyon
$583 Roundtrip, found 3 days ago
$583
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Sun, Nov 2 from Seattle to Lyon, returning Sat, Nov 15, priced at $583 found 3 days ago
Lufthansa
Wed, Nov 5 - Thu, Dec 4
SEA
Seattle
LYS
Lyon
$584 Roundtrip, found 6 days ago
$584
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Wed, Nov 5 from Seattle to Lyon, returning Thu, Dec 4, priced at $584 found 6 days ago
Lufthansa
Sun, Nov 2 - Sun, Nov 9
SEA
Seattle
LYS
Lyon
$585 Roundtrip, found 2 days ago
$585
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Sun, Nov 2 from Seattle to Lyon, returning Sun, Nov 9, priced at $585 found 2 days ago
Air Canada
Fri, Jan 16 - Sun, Jan 25
SEA
Seattle
LYS
Lyon
$585 Roundtrip, found 1 day ago
$585
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Jan 16 from Seattle to Lyon, returning Sun, Jan 25, priced at $585 found 1 day ago
Delta
Sat, Nov 8 - Tue, Nov 18
SEA
Seattle
LYS
Lyon
$586 Roundtrip, found 20 hours ago
$586
Roundtrip
found 20 hours ago
Select Delta flight, departing Sat, Nov 8 from Seattle to Lyon, returning Tue, Nov 18, priced at $586 found 20 hours ago
United
Tue, Nov 4 - Tue, Nov 11
SEA
Seattle
LYS
Lyon
$589 Roundtrip, found 3 days ago
$589
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 4 from Seattle to Lyon, returning Tue, Nov 11, priced at $589 found 3 days ago
British Airways
Mon, Dec 1 - Mon, Dec 15
SEA
Seattle
LYS
Lyon
$592 Roundtrip, found 6 days ago
$592
Roundtrip
found 6 days ago
Select British Airways flight, departing Mon, Dec 1 from Seattle to Lyon, returning Mon, Dec 15, priced at $592 found 6 days ago

Alternative airports near Lyon

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Saint-Exupery LYS. Cheapest option available. Average driving time to city center is 26 minutes. Flights from $692
LYS
Saint-Exupery
Cheapest
Average driving time to city center26 min
Flights from $692
Flights from Seattle (SEA) to Lyon (LYS)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Saint-Exupery
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Iberia, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$576
Distance
5255 mi

Seattle to Lyon Flights

The cheapest times to fly from Seattle to Lyon

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 Seattle to Lyon are during the month of November. You can find some of the cheapest flights from Seattle to Lyon with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Lyon

Sunday is one of the best days to book for cheap flights from Seattle to Lyon: 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 Seattle to Lyon

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 Seattle to Lyon in 2025. You can also book with separate airlines for your outbound and return journeys, from $435 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 Seattle to Lyon 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 Seattle to Lyon 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.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Saint-Exupery Airport (LYS) cost?
Lock in a cheap one-way flight from $435 or cheap return flight from $577 from Seattle - Tacoma Intl. Airport (SEA) to Saint-Exupery Airport (LYS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Saint-Exupery Airport (LYS)?
Planning your trip for November is a great way to save, as it's the cheapest month for flights between SEA and LYS. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Saint-Exupery Airport (LYS)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from SEA to LYS. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Saint-Exupery Airport (LYS)?
There aren't any daily direct flights departing from Seattle - Tacoma Intl. Airport (SEA) to Saint-Exupery Airport (LYS). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from SEA to LYS?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Saint-Exupery Airport (LYS)?
Choose a flight from Seattle - Tacoma Intl. Airport (SEA) to Saint-Exupery Airport (LYS) that leaves before 3 PM to reduce the likelihood of delays. Later departures are on average 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 Seattle - Tacoma Intl. Airport (SEA) to Saint-Exupery Airport (LYS) last-minute?
Booking your plane ticket from SEA to LYS right before your trip is generally more expensive. However, if you're flexible with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book a SEA to LYS flight and hotel package?
You'll generally save money by booking a SEA to LYS flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After choosing your preferred accommodations and flights, you can add extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Saint-Exupery Airport (LYS)?
If you reserved your SEA to LYS flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.