$664 Cheap Flights from Seattle (SEA) to Skiathos (JSI)

View $664 flight on Mon, Sep 1, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Skiathos (JSI-Skiathos Island National)

Cheap Flights from Seattle to Skiathos (SEA-JSI)

Prices were available within the past 7 days and start at $664 for one-way flights and $1,252 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, May 11 - Thu, May 21
SEA
Seattle
JSI
Skiathos
$1,252 Roundtrip, found 23 hours ago
$1,252
Roundtrip
found 23 hours ago
Select United flight, departing Mon, May 11 from Seattle to Skiathos, returning Thu, May 21, priced at $1,252 found 23 hours ago
United
Mon, May 11 - Thu, May 21
SEA
Seattle
JSI
Skiathos
$1,254 Roundtrip, found 23 hours ago
$1,254
Roundtrip
found 23 hours ago
Select United flight, departing Mon, May 11 from Seattle to Skiathos, returning Thu, May 21, priced at $1,254 found 23 hours ago
United
Mon, May 11 - Thu, May 21
SEA
Seattle
JSI
Skiathos
$1,260 Roundtrip, found 23 hours ago
$1,260
Roundtrip
found 23 hours ago
Select United flight, departing Mon, May 11 from Seattle to Skiathos, returning Thu, May 21, priced at $1,260 found 23 hours ago
United
Mon, May 11 - Thu, May 21
SEA
Seattle
JSI
Skiathos
$1,262 Roundtrip, found 23 hours ago
$1,262
Roundtrip
found 23 hours ago
Select United flight, departing Mon, May 11 from Seattle to Skiathos, returning Thu, May 21, priced at $1,262 found 23 hours ago
United
Mon, May 11 - Thu, May 21
SEA
Seattle
JSI
Skiathos
$1,262 Roundtrip, found 23 hours ago
$1,262
Roundtrip
found 23 hours ago
Select United flight, departing Mon, May 11 from Seattle to Skiathos, returning Thu, May 21, priced at $1,262 found 23 hours ago
United
Mon, May 11 - Thu, May 21
SEA
Seattle
JSI
Skiathos
$1,270 Roundtrip, found 23 hours ago
$1,270
Roundtrip
found 23 hours ago
Select United flight, departing Mon, May 11 from Seattle to Skiathos, returning Thu, May 21, priced at $1,270 found 23 hours ago
Lufthansa
Mon, May 11 - Thu, May 21
SEA
Seattle
JSI
Skiathos
$1,291 Roundtrip, found 23 hours ago
$1,291
Roundtrip
found 23 hours ago
Select Lufthansa flight, departing Mon, May 11 from Seattle to Skiathos, returning Thu, May 21, priced at $1,291 found 23 hours ago
Lufthansa
Mon, May 11 - Thu, May 21
SEA
Seattle
JSI
Skiathos
$1,293 Roundtrip, found 23 hours ago
$1,293
Roundtrip
found 23 hours ago
Select Lufthansa flight, departing Mon, May 11 from Seattle to Skiathos, returning Thu, May 21, priced at $1,293 found 23 hours ago
Lufthansa
Mon, May 11 - Thu, May 21
SEA
Seattle
JSI
Skiathos
$1,315 Roundtrip, found 23 hours ago
$1,315
Roundtrip
found 23 hours ago
Select Lufthansa flight, departing Mon, May 11 from Seattle to Skiathos, returning Thu, May 21, priced at $1,315 found 23 hours ago
United
Mon, May 11 - Thu, May 21
SEA
Seattle
JSI
Skiathos
$1,317 Roundtrip, found 23 hours ago
$1,317
Roundtrip
found 23 hours ago
Select United flight, departing Mon, May 11 from Seattle to Skiathos, returning Thu, May 21, priced at $1,317 found 23 hours ago
Flights from Seattle (SEA) to Skiathos (JSI)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Skiathos Island National
Airlines serving
Lufthansa
Roundtrip price
$1,252
Distance
6092 mi

Seattle to Skiathos Flights

The cheapest times to fly from Seattle to Skiathos

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

 

The best time to book a flight from Seattle to Skiathos

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

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 Skiathos in 2025. You can also book with separate airlines for your outbound and return journeys, from $664 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 Skiathos 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 Skiathos 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 Skiathos Island National Airport (JSI) cost?
Snag a cheap one-way flight from $664 or cheap return flight from $1,252 from Seattle - Tacoma Intl. Airport (SEA) to Skiathos Island National Airport (JSI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Skiathos Island National Airport (JSI)?
May is the cheapest month to fly from SEA to JSI. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Skiathos Island National Airport (JSI)?
To find the cheapest airline that'll fly you from SEA to JSI, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Skiathos Island National Airport (JSI)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Skiathos Island National Airport (JSI) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to JSI?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary based on the airline, time of year 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 Skiathos Island National Airport (JSI)?
To arrive at Skiathos Island National Airport (JSI) on schedule, pick a flight that leaves from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Skiathos Island National Airport (JSI) last-minute?
Last-minute bookings from SEA to JSI are generally more expensive. For the lowest prices, start looking for flights well ahead of time. That being said, if your travel plans are flexible, it's possible to land a cheap ticket right before your journey.
Is it cheaper to book a SEA to JSI flight and hotel package?
Securing a SEA to JSI flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our extensive range of hotels and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Skiathos Island National Airport (JSI)?
In most cases, you're able to cancel or reschedule your SEA to JSI flight. However, there may be additional fees, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you need more details, head to our Customer Service portal.

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*Available to One Key members.