BSL - SEA

$355 Find Cheap Flights from Basel to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Basel to Seattle departing on 2/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Basel to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Basel to Seattle, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$607
American Airlines
Fri 3/6Tue 3/10
BSL - SEA • 1 stop
Cheapest one-way
$394
British Airways
Sat 2/14
BSL - SEA • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Basel to Seattle (BSL-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Basel to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Basel to Seattle

Fri, Mar 6 - Tue, Mar 10
American Airlines Logo
7:00 am - 11:30 am
BSL
-
SEA
13h 30m1 stop
American Airlines Logo
6:00 am - 10:20 pm
SEA
-
BSL
32h 20m2 stops
$607American Airlines
Thu, Feb 19 - Mon, Mar 2
American Airlines Logo
11:05 am - 4:55 pm
BSL
-
SEA
14h 50m1 stop
American Airlines Logo
7:15 am - 6:15 pm
SEA
-
BSL
26h 00m2 stops
$608American Airlines
Thu, Feb 19 - Mon, Mar 2
American Airlines Logo
11:05 am - 11:30 am
BSL
-
SEA
33h 25m1 stop
American Airlines Logo
1:39 pm - 6:15 pm
SEA
-
BSL
19h 36m2 stops
$609American Airlines
Thu, Jan 15 - Mon, Jan 19
British Airways Logo
6:05 am - 4:55 pm
BSL
-
SEA
19h 50m1 stop
British Airways Logo
6:50 pm - 10:15 am
SEA
-
BSL
30h 25m1 stop
$611British Airways
Thu, Jan 15 - Mon, Jan 19
American Airlines Logo
6:05 am - 7:04 pm
BSL
-
SEA
21h 59m2 stops
American Airlines Logo
6:50 pm - 3:05 pm
SEA
-
BSL
35h 15m1 stop
$614American Airlines
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
9:50 am - 1:20 pm
BSL
-
SEA
12h 30m1 stop
United Airlines Logo
8:59 am - 12:30 pm
SEA
-
BSL
19h 31m3 stops
$676United Airlines
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
9:50 am - 10:59 pm
BSL
-
SEA
22h 09m2 stops
United Airlines Logo
10:55 am - 12:30 pm
SEA
-
BSL
17h 35m2 stops
$679United Airlines
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
9:50 am - 8:58 pm
BSL
-
SEA
20h 08m2 stops
United Airlines Logo
7:00 am - 12:30 pm
SEA
-
BSL
21h 30m2 stops
$680United Airlines
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
9:50 am - 11:28 pm
BSL
-
SEA
22h 38m2 stops
United Airlines Logo
8:59 am - 12:30 pm
SEA
-
BSL
19h 31m3 stops
$681United Airlines
Mon, Feb 9 - Fri, Feb 20
British Airways Logo
10:55 am - 6:43 pm
BSL
-
SEA
16h 48m2 stops
British Airways Logo
6:50 pm - 5:05 pm
SEA
-
BSL
13h 15m1 stop
$8,381British Airways
Booking Insights

KAYAK's insights & trends for Basel to Seattle flights

Get data-powered insights and trends into flights from Basel to Seattle to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Basel to Seattle?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Basel to Seattle were found on American Airlines ($607) and British Airways ($611).

Find deals

Good to know

Low seasonSeptember
Cheapest flight$394
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Basel to Seattle

When to book flights from Basel to Seattle

Are your dates flexible? Find out the best times to travel from Basel to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Basel to Seattle flights

  • What is the cheapest flight from Basel EuroAirport Swiss to Seattle?

    In the last 3 days, the lowest price for a flight from Basel EuroAirport Swiss to Seattle was $394 for a one-way ticket and $607 for a round-trip.

  • Do I need a passport to fly between Basel and Seattle?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Basel and on arrival in Seattle.

  • Which aircraft models fly most regularly from Basel to Seattle?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Basel to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Basel to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Basel to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Basel is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Basel to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Basel with another airline. Booking your flights between Basel and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Basel to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Basel up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Basel to Seattle

Information on your arrival and departure airports

Basel (BSL)
Seattle (SEA)