$1,093 Cheap Flights from Seattle (SEA) to Bissau (OXB)

View $1,093 flight on Tue, Jan 6, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Bissau (OXB-Osvaldo Vieira Intl.)

Cheap Flights from Seattle to Bissau (SEA-OXB)

Prices were available within the past 7 days and start at $1,093 for one-way flights and $1,392 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Jan 6 - Fri, Jan 23
SEA
Seattle
OXB
Bissau
$1,392 Roundtrip, found 5 days ago
$1,392
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Seattle to Bissau, returning Fri, Jan 23, priced at $1,392 found 5 days ago
Hawaiian Airlines
Fri, Jan 9 - Fri, Jan 23
SEA
Seattle
OXB
Bissau
$1,397 Roundtrip, found 5 days ago
$1,397
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Fri, Jan 9 from Seattle to Bissau, returning Fri, Jan 23, priced at $1,397 found 5 days ago
Alaska Airlines
Tue, Jan 6 - Wed, Jan 21
SEA
Seattle
OXB
Bissau
$1,408 Roundtrip, found 5 days ago
$1,408
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Seattle to Bissau, returning Wed, Jan 21, priced at $1,408 found 5 days ago
Alaska Airlines
Wed, Jan 7 - Fri, Jan 23
SEA
Seattle
OXB
Bissau
$1,409 Roundtrip, found 5 days ago
$1,409
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Jan 7 from Seattle to Bissau, returning Fri, Jan 23, priced at $1,409 found 5 days ago
Hawaiian Airlines
Thu, Jan 8 - Fri, Jan 23
SEA
Seattle
OXB
Bissau
$1,411 Roundtrip, found 5 days ago
$1,411
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Thu, Jan 8 from Seattle to Bissau, returning Fri, Jan 23, priced at $1,411 found 5 days ago
Alaska Airlines
Fri, Jan 9 - Wed, Jan 21
SEA
Seattle
OXB
Bissau
$1,413 Roundtrip, found 5 days ago
$1,413
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Jan 9 from Seattle to Bissau, returning Wed, Jan 21, priced at $1,413 found 5 days ago
Alaska Airlines
Wed, Jan 7 - Wed, Jan 21
SEA
Seattle
OXB
Bissau
$1,424 Roundtrip, found 5 days ago
$1,424
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Jan 7 from Seattle to Bissau, returning Wed, Jan 21, priced at $1,424 found 5 days ago
Turkish Airlines
Thu, Jan 8 - Thu, Jan 22
SEA
Seattle
OXB
Bissau
$1,431 Roundtrip, found 5 days ago
$1,431
Roundtrip
found 5 days ago
Select Turkish Airlines flight, departing Thu, Jan 8 from Seattle to Bissau, returning Thu, Jan 22, priced at $1,431 found 5 days ago
Air Canada
Sun, Jan 11 - Tue, Jan 20
SEA
Seattle
OXB
Bissau
$1,707 Roundtrip, found 5 days ago
$1,707
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sun, Jan 11 from Seattle to Bissau, returning Tue, Jan 20, priced at $1,707 found 5 days ago
Lufthansa
Tue, Jan 6 - Sat, Jan 24
SEA
Seattle
OXB
Bissau
$1,738 Roundtrip, found 5 days ago
$1,738
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Tue, Jan 6 from Seattle to Bissau, returning Sat, Jan 24, priced at $1,738 found 5 days ago

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Osvaldo Vieira Intl. Airport (OXB) cost?
Get a cheap one-way flight from $1,093 or cheap return flight from $1,392 from Seattle - Tacoma Intl. Airport (SEA) to Osvaldo Vieira Intl. Airport (OXB) 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 Osvaldo Vieira Intl. Airport (OXB)?
January is the least expensive month to fly from SEA to OXB. Avoiding peak travel times is often the key to better flight prices.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Osvaldo Vieira Intl. Airport (OXB)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest SEA to OXB flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Osvaldo Vieira Intl. Airport (OXB)?
Direct flights from Seattle - Tacoma Intl. Airport (SEA) to Osvaldo Vieira Intl. Airport (OXB) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to OXB?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*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 Osvaldo Vieira Intl. Airport (OXB)?
To avoid possible delays on the Seattle - Tacoma Intl. Airport (SEA) to Osvaldo Vieira Intl. Airport (OXB) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of being 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 Osvaldo Vieira Intl. Airport (OXB) last-minute?
Last-minute bookings from SEA to OXB are usually more expensive. To secure the lowest prices, start looking for flights well in advance. That said, if you're flexible with your travel dates, you may land a cheap ticket right before your journey.
Is it cheaper to book a SEA to OXB flight and hotel package?
You can save money by booking a SEA to OXB flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After choosing your ideal accommodations and flights, consider other add-ons like activities, car rentals and tours.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Osvaldo Vieira Intl. Airport (OXB)?
If you reserved your SEA to OXB flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond 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'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Osvaldo Vieira Intl.
Roundtrip price
$1,391
Distance
6368 mi

Book with confidence

Seattle to Bissau Flights

The cheapest times to fly from Seattle to Bissau

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

 

The best time to book a flight from Seattle to Bissau

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

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 Bissau in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,093 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 Bissau 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 Bissau 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 Bissau Flights
*Available to One Key members.