$504 Cheap Flights from Seattle (SEA) to Bastia (BIA)

View $504 flight on Fri, Oct 16, 2026Opens 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 $504 for one-way flights and $1,094 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, Apr 27 - Mon, May 4
SEA
Seattle
BIA
Bastia
$1,094 Roundtrip, found 3 days ago
$1,094
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Apr 27 from Seattle to Bastia, returning Mon, May 4, priced at $1,094 found 3 days ago
Alaska Airlines
Mon, Apr 27 - Mon, May 4
SEA
Seattle
BIA
Bastia
$1,128 Roundtrip, found 3 days ago
$1,128
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Apr 27 from Seattle to Bastia, returning Mon, May 4, priced at $1,128 found 3 days ago
Alaska Airlines
Mon, Apr 27 - Mon, May 4
SEA
Seattle
BIA
Bastia
$1,133 Roundtrip, found 3 days ago
$1,133
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Apr 27 from Seattle to Bastia, returning Mon, May 4, priced at $1,133 found 3 days ago
Air Canada
Tue, Sep 1 - Sat, Sep 12
SEA
Seattle
BIA
Bastia
$1,141 Roundtrip, found 2 days ago
$1,141
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, Sep 1 from Seattle to Bastia, returning Sat, Sep 12, priced at $1,141 found 2 days ago
Alaska Airlines
Mon, Apr 27 - Mon, May 4
SEA
Seattle
BIA
Bastia
$1,146 Roundtrip, found 3 days ago
$1,146
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Apr 27 from Seattle to Bastia, returning Mon, May 4, priced at $1,146 found 3 days ago
Alaska Airlines
Tue, Sep 1 - Sat, Sep 12
SEA
Seattle
BIA
Bastia
$1,152 Roundtrip, found 2 days ago
$1,152
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Sep 1 from Seattle to Bastia, returning Sat, Sep 12, priced at $1,152 found 2 days ago
Air Canada
Tue, Sep 1 - Sat, Sep 12
SEA
Seattle
BIA
Bastia
$1,154 Roundtrip, found 2 days ago
$1,154
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, Sep 1 from Seattle to Bastia, returning Sat, Sep 12, priced at $1,154 found 2 days ago
Lufthansa
Fri, Oct 16 - Fri, Oct 23
SEA
Seattle
BIA
Bastia
$1,159 Roundtrip, found 6 days ago
$1,159
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Fri, Oct 16 from Seattle to Bastia, returning Fri, Oct 23, priced at $1,159 found 6 days ago
Alaska Airlines
Tue, Sep 1 - Sat, Sep 12
SEA
Seattle
BIA
Bastia
$1,165 Roundtrip, found 2 days ago
$1,165
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Sep 1 from Seattle to Bastia, returning Sat, Sep 12, priced at $1,165 found 2 days ago
Air Canada
Fri, Oct 16 - Fri, Oct 23
SEA
Seattle
BIA
Bastia
$1,167 Roundtrip, found 6 days ago
$1,167
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Oct 16 from Seattle to Bastia, returning Fri, Oct 23, priced at $1,167 found 6 days ago

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta) cost?
You can find cheap one-way flights from $504 and cheap return flights from $1,094 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta) with Expedia. Roundtrip flights usually range from $1271 to $6380. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
The cheapest month to fly from SEA to BIA is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
Enter SEA to BIA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
Alaska Airlines is one of the cheapest airlines offering connecting flights from Seattle - Tacoma Intl. (SEA) to Poretta (BIA), with round-trip tickets starting from around $1,124 with a layover in Liberty Intl. (EWR). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
The earliest flight from Seattle (SEA) to Bastia (BIA) typically departs at around 12:30 AM, operated by American Airlines and Air France. This seasonal service is active in August, allowing you to begin your journey to beautiful Bastia early in the day. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
The busiest day for flights from Seattle - Tacoma Intl. (SEA) to Poretta (BIA) is a Friday, with around 30 flights. This gives you plenty of options for your travel plans. Major airlines on this route include United, Air Canada, and Alaska Airlines.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
The most popular departure times for flights from Seattle (SEA) to Bastia (BIA) are in the evening, from 6pm to 9pm. About 28% of passengers prefer this time window. Many major carriers, including Lufthansa and Delta Airlines, offer flights during this window. This timing works well because it allows you to enjoy your day in Seattle before heading off to your next adventure.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
A flight from SEA to BIA with a layover takes around 18 hours 30 minutes, with the route covering approximately 5,558 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
Business class seats are offered on the SEA to BIA route with Lufthansa.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Bastia from Seattle - Tacoma Intl. (SEA)?
If you're planning to travel to Bastia from Seattle - Tacoma Intl. (SEA), you can fly into Poretta (BIA) Some flights may connect through major hubs like Vancouver Intl. (YVR), Liberty Intl. (EWR), Frankfurt Intl. (FRA) before reaching Bastia. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities 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, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Bastia (BIA-Poretta) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Poretta
Roundtrip price
$1,094
Distance
5557 mi

Book with confidence

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 April. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $504 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.

 

Seattle to Bastia Flights

*Flight schedules are subject to change.

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*Available to One Key members.