$390 Cheap Flights from Seattle (SEA) to Basel (BSL)

Popular airlines from Seattle-Tacoma International Airport (SEA) to EuroAirport Airport (BSL)

Cheap Flights from Seattle to Basel (SEA-BSL)

Prices were available within the past 7 days and start at $390 for one-way flights and $471 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Lufthansa
Lufthansa
Air Canada
Lufthansa
Delta
Delta
Air Canada
American Airlines
British Airways

Alternative airports near Basel

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

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to EuroAirport Airport (BSL) cost?
Grab a cheap one-way flight from $390 or cheap return flight from $471 from Seattle - Tacoma Intl. Airport (SEA) to EuroAirport Airport (BSL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to EuroAirport Airport (BSL)?
The cheapest month to fly from SEA to BSL is February, when demand is low. Off-peak months are typically when better flight deals are available between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to EuroAirport Airport (BSL)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll fly you from SEA to BSL. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to EuroAirport Airport (BSL)?
You'll need to take a flight with a layover if you're traveling from Seattle - Tacoma Intl. Airport (SEA) to EuroAirport Airport (BSL). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from SEA to BSL?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary 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 EuroAirport Airport (BSL)?
To avoid potential delays on the Seattle - Tacoma Intl. Airport (SEA) to EuroAirport Airport (BSL) route, fly before 3 PM. Later flights 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 EuroAirport Airport (BSL) last-minute?
Booking your ticket from SEA to BSL shortly before your getaway is generally more expensive. However, if you're flexible with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a SEA to BSL flight and hotel package?
Opting for a SEA to BSL flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Pick from our impressive range of hotels and then add flights, activities and car rentals to your booking. Bundle it all 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 EuroAirport Airport (BSL)?
It's generally possible to cancel or reschedule your SEA to BSL flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
EuroAirport
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, KLM, Lufthansa, Turkish Airlines, United
Roundtrip price
$470
Distance
5210 mi

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