$421 Cheap Flights from Seattle (SEA) to Bastia (BIA)

View $421 flight on Thu, Sep 18, 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 $421 for one-way flights and $933 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Oct 14 - Wed, Oct 22
SEA
Seattle
BIA
Bastia
$933 Roundtrip, found 3 days ago
$933
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 14 from Seattle to Bastia, returning Wed, Oct 22, priced at $933 found 3 days ago
Lufthansa
Mon, Oct 13 - Wed, Oct 22
SEA
Seattle
BIA
Bastia
$952 Roundtrip, found 3 days ago
$952
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Mon, Oct 13 from Seattle to Bastia, returning Wed, Oct 22, priced at $952 found 3 days ago
Air Canada
Thu, Oct 16 - Wed, Oct 22
SEA
Seattle
BIA
Bastia
$979 Roundtrip, found 3 days ago
$979
Roundtrip
found 3 days ago
Select Air Canada flight, departing Thu, Oct 16 from Seattle to Bastia, returning Wed, Oct 22, priced at $979 found 3 days ago
Air Canada
Thu, Oct 16 - Wed, Oct 22
SEA
Seattle
BIA
Bastia
$983 Roundtrip, found 3 days ago
$983
Roundtrip
found 3 days ago
Select Air Canada flight, departing Thu, Oct 16 from Seattle to Bastia, returning Wed, Oct 22, priced at $983 found 3 days ago
United
Tue, Oct 14 - Sun, Oct 19
SEA
Seattle
BIA
Bastia
$985 Roundtrip, found 3 days ago
$985
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 14 from Seattle to Bastia, returning Sun, Oct 19, priced at $985 found 3 days ago
United
Thu, Oct 16 - Wed, Oct 22
SEA
Seattle
BIA
Bastia
$988 Roundtrip, found 3 days ago
$988
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 16 from Seattle to Bastia, returning Wed, Oct 22, priced at $988 found 3 days ago
United
Tue, Oct 14 - Sat, Oct 25
SEA
Seattle
BIA
Bastia
$994 Roundtrip, found 3 days ago
$994
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 14 from Seattle to Bastia, returning Sat, Oct 25, priced at $994 found 3 days ago
United
Thu, Oct 16 - Wed, Oct 22
SEA
Seattle
BIA
Bastia
$996 Roundtrip, found 3 days ago
$996
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 16 from Seattle to Bastia, returning Wed, Oct 22, priced at $996 found 3 days ago
United
Thu, Oct 16 - Wed, Oct 22
SEA
Seattle
BIA
Bastia
$1,000 Roundtrip, found 3 days ago
$1,000
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 16 from Seattle to Bastia, returning Wed, Oct 22, priced at $1,000 found 3 days ago
Air France
Thu, Oct 16 - Mon, Oct 20
SEA
Seattle
BIA
Bastia
$1,170 Roundtrip, found 3 days ago
$1,170
Roundtrip
found 3 days ago
Select Air France flight, departing Thu, Oct 16 from Seattle to Bastia, returning Mon, Oct 20, priced at $1,170 found 3 days ago

Alternative airports near Bastia

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

Select flight to Poretta BIA. Cheapest and Closest option available. Average driving time to city center is 18 minutes. Flights from $1,144
BIA
Poretta
CheapestClosest
Average driving time to city center18 min
Flights from $1,144
Flights from Seattle (SEA) to Bastia (BIA)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Poretta
Airlines serving
Air France
Roundtrip price
$933
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 October. 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 $421 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.