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

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 Washington to Basel. Visit our flight page for the latest deals!>/a>

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Basel from Washington is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

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

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 Basel with an airline and back to Washington with another airline. Visit our flight page for the latest deals!>/a>

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

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 Basel from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$407 CHEAP FLIGHTS from Washington to Basel (BSL)

BSL

KAYAK searches hundreds of travel sites at once for deals on flights to Basel EuroAirport Swiss

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

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Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$480

Overall average: $509

Lufthansa

Fri 2/20Sun 3/15

SEA - BSL • 1 stop

Cheapest one-way

$407

United Airlines

Thu 3/19

SEA - BSL • 2 stops

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Basel!

Flight Deals

Cheap Flights from Washington to Basel

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington to Basel 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.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Washington to Basel

Fri, Feb 20 - Sun, Mar 15

3:10 pm - 7:40 pm

SEA

BSL

19h 30m1 stop

9:50 am - 2:20 pm

BSL

SEA

12h 30m1 stop

$480Lufthansa

Thu, Feb 19 - Sun, Mar 15

1:40 pm - 1:50 pm

SEA

BSL

15h 10m1 stop

11:15 am - 12:35 pm

BSL

SEA

33h 20m1 stop

$481Air France

Sat, Jan 24 - Sat, Jan 31

8:04 am - 3:35 pm

SEA

BSL

22h 31m2 stops

7:10 am - 4:55 pm

BSL

SEA

18h 45m1 stop

$482British Airways

Wed, Mar 18 - Fri, Mar 27

8:10 am - 9:55 am

SEA

BSL

17h 45m2 stops

6:45 am - 1:10 pm

BSL

SEA

14h 25m1 stop

$483Multiple Airlines

Sun, Feb 22 - Sun, Mar 15

3:10 pm - 7:40 pm

SEA

BSL

19h 30m1 stop

9:50 am - 2:20 pm

BSL

SEA

12h 30m1 stop

$484United Airlines

Wed, Jan 14 - Sun, Jan 18

6:50 pm - 10:05 pm

SEA

BSL

18h 15m1 stop

6:35 am - 4:55 pm

BSL

SEA

19h 20m1 stop

$486British Airways

Wed, Feb 18 - Sun, Mar 15

7:15 am - 7:40 pm

SEA

BSL

27h 25m2 stops

9:50 am - 2:20 pm

BSL

SEA

12h 30m1 stop

$488United Airlines

Fri, Feb 20 - Sat, Mar 14

5:50 am - 4:05 pm

SEA

BSL

25h 15m2 stops

2:10 pm - 10:16 pm

BSL

SEA

40h 06m2 stops

$489Multiple Airlines

Mon, Jun 8 - Thu, Jul 2

6:00 am - 10:50 pm

PSC

BSL

31h 50m2 stops

6:10 am - 11:03 pm

BSL

PSC

25h 53m2 stops

$988American Airlines

Mon, Jun 8 - Wed, Jul 1

8:20 am - 6:20 pm

PSC

BSL

25h 00m2 stops

6:40 am - 12:53 pm

BSL

PSC

39h 13m2 stops

$995American Airlines

Useful Info

Low season	October
High season	July
Cheapest flight	$407

Best time to beat the crowds with an average 24% drop in price.

Most popular time to fly with an average 4% increase in price.

Flight from Seattle to Basel

How does KAYAK find such low prices on flights from Washington to Basel?
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 Washington to Basel.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Basel?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Basel from Washington 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 Washington to Basel?
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 Basel with an airline and back to Washington with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Basel?
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 Basel from Washington 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 to Basel

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on your arrival and departure airports

Basel (BSL)

BSL

$407 Find Cheap Flights from Washington to Basel

KAYAK searches hundreds of travel sites at once for deals on flights to Basel EuroAirport Swiss

Everything you should know

Cheap Flights from Washington to Basel

Recent round-trip flight deals from Washington to Basel

Recent one-way flight deals from Washington to Basel

Recent last minute flight deals from Washington to Basel

Good to know

FAQs for booking Washington to Basel flights

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

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 Washington to Basel.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Basel from Washington 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 Washington to Basel?

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 Basel with an airline and back to Washington with another airline.

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

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 Basel from Washington 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 to Basel

Information on your arrival and departure airports

Cabin class types available on flights to Basel

Complete your trip to Basel with a hotel stay or car rental

Find direct flights for Basel

Flights to other popular destinations

Flights from domestic origins to Washington

Choose which airport to fly into in Basel

Find deals for your return flight