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>

$420 CHEAP FLIGHTS from Washington to Basel (BSL)

BSL

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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

Wed, Jan 7 - Thu, Feb 5

6:50 pm - 10:05 pmSEA-BSL

18h 15m1 stop

11:05 am - 4:55 pmBSL-SEA

14h 50m1 stop

$438British Airways

Find Deal

Tue, Jan 13 - Mon, Feb 23

1:30 pm - 1:50 pmSEA-BSL

15h 20m2 stops

11:15 am - 11:40 amBSL-SEA

33h 25m1 stop

$483Air France

Find Deal

Wed, Jan 7 - Fri, Feb 6

3:10 pm - 4:05 pmSEA-BSL

15h 55m1 stop

9:50 am - 7:16 pmBSL-SEA

18h 26m2 stops

$485Lufthansa

Find Deal

Wed, Jan 7 - Wed, Feb 4

5:00 am - 4:05 pmSEA-BSL

26h 05m2 stops

9:50 am - 1:20 pmBSL-SEA

12h 30m1 stop

$486United Airlines

Find Deal

Wed, Jan 7 - Thu, Feb 5

2:10 pm - 4:05 pmSEA-BSL

16h 55m2 stops

6:30 am - 7:16 pmBSL-SEA

21h 46m2 stops

$487Lufthansa

Find Deal

Mon, Jan 5 - Thu, Feb 5

2:10 pm - 1:50 pmSEA-BSL

14h 40m1 stop

11:15 am - 9:49 pmBSL-SEA

19h 34m2 stops

$489KLM

Find Deal

Tue, Jan 6 - Fri, Feb 6

9:25 am - 7:40 pmSEA-BSL

25h 15m2 stops

9:50 am - 10:16 pmBSL-SEA

21h 26m2 stops

$494United Airlines

Find Deal

Sun, Dec 7 - Sun, Dec 14

9:50 am - 7:40 pmPDX-BSL

24h 50m2 stops

1:10 pm - 12:37 amBSL-PDX

20h 27m2 stops

$512Multiple Airlines

Find Deal

Mon, Jan 5 - Sat, Feb 7

2:10 pm - 1:50 pmSEA-BSL

14h 40m1 stop

6:05 am - 4:54 pmBSL-SEA

19h 49m2 stops

$515KLM

Find Deal

Tue, Jan 13 - Sun, Feb 22

1:30 pm - 1:50 pmSEA-BSL

15h 20m2 stops

6:05 am - 4:14 pmBSL-SEA

19h 09m2 stops

$615Multiple Airlines

Find Deal

Cheapest round-trip

$438

Overall average: $577

British Airways

Wed 1/7Thu 2/5

SEA - BSL • 1 stop

Cheapest one-way

$420

Lufthansa

Sun 3/29

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!

Useful Info

Low season	October
High season	July
Cheapest flight	$420

Best time to beat the crowds with an average 25% 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

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Origins

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Return flight deals

Information on your arrival and departure airports

Basel (BSL)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

BSL

$420 Find Cheap Flights from Washington to Basel

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

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

Everything you should know

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