BSL - SEA

$527 Find Cheap Flights from Basel to Seattle

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Basel to Seattle departing on 5/30. 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

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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Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from Basel to Seattle

KAYAK's recommended round-trip deals from the most popular airlines that fly from Basel to Seattle.
Discover the best prices for you by selecting your travel dates on KAYAK.
American Airlines Logo
6:00 am - 11:35 amBSL-SEA
14h 35m1 stop
American Airlines Logo
8:20 pm - 5:40 pmSEA-BSL
12h 20m1 stop
$527American Airlines
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Fri, May 30 - Sat, Jun 7
British Airways Logo
11:45 am - 11:09 pmBSL-SEA
20h 24m2 stops
British Airways Logo
1:35 pm - 5:40 pmSEA-BSL
19h 05m1 stop
$534British Airways
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Fri, May 30 - Sat, Jun 7
American Airlines Logo
6:00 am - 5:28 pmBSL-SEA
20h 28m2 stops
American Airlines Logo
1:35 pm - 5:40 pmSEA-BSL
19h 05m1 stop
$537American Airlines
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Fri, May 30 - Sat, Jun 7
Delta Logo
6:15 am - 4:08 pmBSL-SEA
18h 53m2 stops
Delta Logo
6:00 am - 9:30 amSEA-BSL
18h 30m2 stops
$546Delta
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Fri, May 30 - Sat, Jun 7
Delta Logo
10:10 am - 5:35 pmBSL-SEA
16h 25m1 stop
Delta Logo
7:20 am - 9:35 amSEA-BSL
17h 15m2 stops
$552Delta
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Sat, Aug 23 - Wed, Sep 24
KLM Logo
2:25 pm - 11:35 amBSL-SEA
30h 10m1 stop
KLM Logo
2:10 pm - 9:35 amSEA-BSL
34h 25m1 stop
$572KLM
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Sat, Aug 23 - Wed, Sep 24
Logo
11:50 am - 11:30 amBSL-SEA
32h 40m1 stop
Logo
8:20 pm - 5:40 pmSEA-BSL
12h 20m1 stop
$639
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Sat, May 17 - Sat, May 31
United Airlines Logo
11:30 am - 9:11 pmBSL-SEA
42h 41m2 stops
United Airlines Logo
7:30 am - 12:25 pmSEA-BSL
19h 55m2 stops
$644United Airlines
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Sat, May 31 - Thu, Jan 1
United Airlines Logo
11:30 am - 6:28 pmBSL-SEA
39h 58m2 stops
United Airlines Logo
7:00 am - 12:25 pmSEA-BSL
20h 25m3 stops
$751United Airlines
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Mon, Jul 7 - Sun, Jul 20
Logo
6:15 am - 8:40 pmBSL-SEA
23h 25m3 stops
Logo
7:00 pm - 3:20 pmSEA-BSL
35h 20m3 stops
$1,128
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Sat, Jun 14 - Sat, Jun 21
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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 ($527) and British Airways ($534).

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Good to know

Low seasonNovember
High seasonMay
Cheapest flight$527
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 4% 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 $909 for a one-way ticket and $527 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.

  • Which airline alliances offer flights from Basel to Seattle?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Basel and Seattle, with Star Alliance being the most commonly used for this 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

Seattle (SEA)
Basel (BSL)

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