What is the cheapest airline that flies from Basel EuroAirport Swiss to Seattle/Tacoma Intl?

British Airways is the most popular carrier operating from Basel EuroAirport Swiss to Seattle/Tacoma Intl

When did momondo last update prices for flights from Basel EuroAirport Swiss to Seattle/Tacoma Intl Airport?

Prices for flights from Basel EuroAirport Swiss to Seattle/Tacoma Intl Airport refresh daily.

How old do you have to be to fly from Basel EuroAirport Swiss to Seattle/Tacoma Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Basel EuroAirport Swiss to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$475 Cheap Flights from Basel EuroAirport Swiss to Seattle in 2025/26

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Find the cheapest flights from Basel EuroAirport Swiss to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:15 am - 11:30 am

BSL

SEA

33h 15m1 stop

2:25 pm - 10:20 pm

SEA

BSL

23h 55m1 stop

$614American Airlines

Fri, Mar 6 - Tue, Mar 10

11:05 am - 11:29 pm

BSL

SEA

21h 24m2 stops

1:49 pm - 6:15 pm

SEA

BSL

19h 26m2 stops

$620American Airlines

Thu, Feb 19 - Mon, Mar 2

11:05 am - 11:29 pm

BSL

SEA

21h 24m2 stops

2:18 pm - 6:15 pm

SEA

BSL

18h 57m2 stops

$626British Airways

Thu, Feb 19 - Mon, Mar 2

9:50 am - 1:20 pm

BSL

SEA

12h 30m1 stop

8:59 am - 12:30 pm

SEA

BSL

19h 31m3 stops

$681United Airlines

Fri, Mar 6 - Tue, Mar 10

9:50 am - 1:20 pm

BSL

SEA

12h 30m1 stop

8:59 am - 12:30 pm

SEA

BSL

19h 31m3 stops

$682United Airlines

Fri, Mar 6 - Tue, Mar 10

1:10 pm - 6:04 pm

BSL

SEA

37h 54m2 stops

8:59 am - 12:30 pm

SEA

BSL

19h 31m3 stops

$687United Airlines

Fri, Mar 6 - Tue, Mar 10

6:50 pm - 5:55 pm

BSL

SEA

31h 05m1 stop

8:10 am - 8:10 pm

SEA

BSL

28h 00m2 stops

$858Multiple Airlines

Sun, Mar 15 - Fri, Mar 20

6:50 pm - 5:55 pm

BSL

SEA

31h 05m1 stop

3:10 pm - 9:50 am

SEA

BSL

34h 40m1 stop

$860Multiple Airlines

Sun, Mar 15 - Fri, Mar 20

6:35 am - 9:54 pm

BSL

SEA

23h 19m2 stops

8:10 am - 10:05 am

SEA

BSL

17h 55m2 stops

$864Multiple Airlines

Sun, Mar 15 - Fri, Mar 20

7:00 pm - 6:00 pm

BSL

SEA

31h 00m2 stops

3:35 pm - 10:05 am

SEA

BSL

34h 30m2 stops

$4,659Multiple Airlines

Sun, Mar 15 - Fri, Mar 20

British Airways flights from Basel EuroAirport Swiss to Seattle

Our best British Airways deals on Basel EuroAirport Swiss to Seattle flight tickets

British Airways

Feb 19

BSL11:05 amBasel EuroAirport Swiss

21h 24m

2 stops

SEA11:29 pmSeattle/Tacoma Intl

Mar 2

SEA2:18 pmSeattle/Tacoma Intl

18h 57m

2 stops

BSL6:15 pmBasel EuroAirport Swiss

$626

Find similar

British Airways

Dec 19

BSL11:15 amBasel EuroAirport Swiss

16h 14m

2 stops

SEA6:29 pmSeattle/Tacoma Intl

Jan 2

SEA6:50 pmSeattle/Tacoma Intl

13h 15m

1 stop

BSL5:05 pmBasel EuroAirport Swiss

$5,040

Find similar

American Airlines flights from Basel EuroAirport Swiss to Seattle

Our best American Airlines deals on Basel EuroAirport Swiss to Seattle flight tickets

American Airlines

Mar 6

BSL7:00 amBasel EuroAirport Swiss

13h 30m

1 stop

SEA11:30 amSeattle/Tacoma Intl

Mar 10

SEA7:15 amSeattle/Tacoma Intl

31h 05m

2 stops

BSL10:20 pmBasel EuroAirport Swiss

$614

Find similar

American Airlines

Feb 19

BSL11:05 amBasel EuroAirport Swiss

21h 24m

2 stops

SEA11:29 pmSeattle/Tacoma Intl

Mar 2

SEA1:49 pmSeattle/Tacoma Intl

19h 26m

2 stops

BSL6:15 pmBasel EuroAirport Swiss

$620

Find similar

American Airlines

Feb 1

BSL6:35 amBasel EuroAirport Swiss

24h 32m

2 stops

SEA10:07 pmSeattle/Tacoma Intl

Feb 5

SEA7:00 amSeattle/Tacoma Intl

23h 05m

2 stops

BSL3:05 pmBasel EuroAirport Swiss

$1,010

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Basel EuroAirport Swiss to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Fri 3/6

11:15 am-11:30 am

1 stop33h 15m

Seattle/Tacoma Intl

Tue 3/10

2:25 pm-10:20 pm

1 stop23h 55m

$614

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 2/19

11:05 am-11:29 pm

2 stops21h 24m

Seattle/Tacoma Intl

Mon 3/2

1:49 pm-6:15 pm

2 stops19h 26m

$620

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 2/19

11:05 am-11:29 pm

2 stops21h 24m

Seattle/Tacoma Intl

Mon 3/2

2:18 pm-6:15 pm

2 stops18h 57m

$626

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Fri 3/6

9:50 am-1:20 pm

1 stop12h 30m

Seattle/Tacoma Intl

Tue 3/10

8:59 am-12:30 pm

3 stops19h 31m

$681

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Fri 3/6

9:50 am-1:20 pm

1 stop12h 30m

Seattle/Tacoma Intl

Tue 3/10

8:59 am-12:30 pm

3 stops19h 31m

$682

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Fri 3/6

1:10 pm-6:04 pm

2 stops37h 54m

Seattle/Tacoma Intl

Tue 3/10

8:59 am-12:30 pm

3 stops19h 31m

$687

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 3/15

6:50 pm-5:55 pm

1 stop31h 05m

Seattle/Tacoma Intl

Fri 3/20

8:10 am-8:10 pm

2 stops28h 00m

$858

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 3/15

6:50 pm-5:55 pm

1 stop31h 05m

Seattle/Tacoma Intl

Fri 3/20

3:10 pm-9:50 am

1 stop34h 40m

$860

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 3/15

6:35 am-9:54 pm

2 stops23h 19m

Seattle/Tacoma Intl

Fri 3/20

8:10 am-10:05 am

2 stops17h 55m

$864

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 3/15

7:00 pm-6:00 pm

2 stops31h 00m

Seattle/Tacoma Intl

Fri 3/20

3:35 pm-10:05 am

2 stops34h 30m

$4,659

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Basel EuroAirport Swiss to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Basel EuroAirport Swiss is on a Thursday. momondo users have found tickets for Thursday departures for as low as $547. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Basel EuroAirport Swiss because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,021.

When to book flights from Basel EuroAirport Swiss to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Basel EuroAirport Swiss to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Basel EuroAirport Swiss to Seattle (BSL to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Basel EuroAirport Swiss to Seattle

Fastest flight time	12h 59m
Direct flights	None

The fastest flight from Basel EuroAirport Swiss to Seattle takes 12h 59m

There are no direct flights from Basel EuroAirport Swiss to Seattle. There are no popular flight routes from Basel EuroAirport Swiss to Seattle.

Search flight deals

How far is Basel EuroAirport Swiss to Seattle/Tacoma Intl by plane?
The straight-line distance from Basel EuroAirport Swiss to Seattle/Tacoma Intl is 5198.6 mi. 12h 59m is a normal flight duration for this route.
When did momondo last update prices for flights from Basel EuroAirport Swiss to Seattle/Tacoma Intl Airport?
Prices for flights from Basel EuroAirport Swiss to Seattle/Tacoma Intl Airport refresh daily.
How old do you have to be to fly from Basel EuroAirport Swiss to Seattle/Tacoma Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Basel EuroAirport Swiss to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Puyallup

Redmond

Tukwila

Cle Elum

Federal Way

Lakewood

Fife

Centralia

Westport

Kirkland

Shoreline

Why use momondo?

Why should I use momondo to find a flight deal from Basel to Seattle?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Basel.

Can I find flights from Basel to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Basel on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Basel to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from Basel. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Basel to Seattle right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Basel to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.