$414 Cheap Flights from Seattle (SEA) to Bastia (BIA)

View $414 flight on Sun, Aug 31, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Bastia (BIA-Poretta)

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Cheap Flights from Seattle to Bastia (SEA-BIA)

Prices were available within the past 7 days and start at $414 for one-way flights and $1,305 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sat, Aug 16 - Sat, Aug 30
SEA
Seattle
BIA
Bastia
$1,305 Roundtrip, found 12 hours ago
$1,305
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Sat, Aug 16 from Seattle to Bastia, returning Sat, Aug 30, priced at $1,305 found 12 hours ago
Air France
Sat, Aug 16 - Sat, Aug 30
SEA
Seattle
BIA
Bastia
$1,349 Roundtrip, found 12 hours ago
$1,349
Roundtrip
found 12 hours ago
Select Air France flight, departing Sat, Aug 16 from Seattle to Bastia, returning Sat, Aug 30, priced at $1,349 found 12 hours ago
Air France
Sat, Aug 16 - Sat, Aug 30
SEA
Seattle
BIA
Bastia
$1,351 Roundtrip, found 12 hours ago
$1,351
Roundtrip
found 12 hours ago
Select Air France flight, departing Sat, Aug 16 from Seattle to Bastia, returning Sat, Aug 30, priced at $1,351 found 12 hours ago
Air France
Sat, Aug 16 - Sat, Aug 30
SEA
Seattle
BIA
Bastia
$1,362 Roundtrip, found 12 hours ago
$1,362
Roundtrip
found 12 hours ago
Select Air France flight, departing Sat, Aug 16 from Seattle to Bastia, returning Sat, Aug 30, priced at $1,362 found 12 hours ago
Air Canada
Sat, Aug 16 - Sat, Aug 30
SEA
Seattle
BIA
Bastia
$1,380 Roundtrip, found 12 hours ago
$1,380
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Sat, Aug 16 from Seattle to Bastia, returning Sat, Aug 30, priced at $1,380 found 12 hours ago
Air Canada
Sat, Aug 16 - Sat, Aug 30
SEA
Seattle
BIA
Bastia
$1,382 Roundtrip, found 12 hours ago
$1,382
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Sat, Aug 16 from Seattle to Bastia, returning Sat, Aug 30, priced at $1,382 found 12 hours ago
Air Canada
Sat, Aug 16 - Sat, Aug 30
SEA
Seattle
BIA
Bastia
$1,391 Roundtrip, found 12 hours ago
$1,391
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Sat, Aug 16 from Seattle to Bastia, returning Sat, Aug 30, priced at $1,391 found 12 hours ago
Air Canada
Sat, Aug 16 - Sat, Aug 30
SEA
Seattle
BIA
Bastia
$1,392 Roundtrip, found 12 hours ago
$1,392
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Sat, Aug 16 from Seattle to Bastia, returning Sat, Aug 30, priced at $1,392 found 12 hours ago
Lufthansa
Sat, Aug 16 - Sat, Aug 30
SEA
Seattle
BIA
Bastia
$1,430 Roundtrip, found 12 hours ago
$1,430
Roundtrip
found 12 hours ago
Select Lufthansa flight, departing Sat, Aug 16 from Seattle to Bastia, returning Sat, Aug 30, priced at $1,430 found 12 hours ago
United
Sat, Aug 16 - Sat, Aug 30
SEA
Seattle
BIA
Bastia
$1,507 Roundtrip, found 12 hours ago
$1,507
Roundtrip
found 12 hours ago
Select United flight, departing Sat, Aug 16 from Seattle to Bastia, returning Sat, Aug 30, priced at $1,507 found 12 hours ago
Flights from Seattle (SEA) to Bastia (BIA)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Poretta
Airlines serving
Air France, Lufthansa
Roundtrip price
$1,305
Distance
5557 mi

Seattle to Bastia Flights

The cheapest times to fly from Seattle to Bastia

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

 

The best time to book a flight from Seattle to Bastia

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

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 Bastia in 2025. You can also book with separate airlines for your outbound and return journeys, from $414 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 Bastia 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 Bastia 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 Poretta Airport (BIA) cost?
Discover the latest flight deals from SEA to BIA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SEA to BIA?
The cheapest flights from SEA to BIA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SEA to BIA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SEA to BIA. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Poretta Airport (BIA)?
There aren't any daily direct flights departing from Seattle - Tacoma Intl. Airport (SEA) to Poretta Airport (BIA). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from SEA to BIA?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on a number of factors, including the season and airline.*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 Poretta Airport (BIA)?
To touch down at Poretta Airport (BIA) without delays, select 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 Poretta Airport (BIA) last-minute?
Waiting until just before your trip to book a flight from SEA to BIA often results in higher prices. While it's possible to find some last-minute offers, they're not always guaranteed. Keep your travel plans flexible to maximize your chances of scoring a bargain.
Is it cheaper to book a SEA to BIA flight and hotel package?
You'll generally save money by booking a SEA to BIA 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 it all in one place. Once you've selected your ideal accommodations and flights, consider adding extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Poretta Airport (BIA)?
Typically, you're able to cancel or reschedule your SEA to BIA flight. However, there may be additional fees, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you want further details, go to our Customer Service portal.

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*Available to One Key members.