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.

$402 Cheap Flights from Basel EuroAirport Swiss to Seattle in 2026

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Find the cheapest flights from Basel EuroAirport Swiss to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:15 am - 12:20 pm

BSL

SEA

13h 05m

1 stop

6:50 pm - 7:40 pm

SEA

BSL

15h 50m

1 stop

$653United Airlines

Tue, Apr 14 - Tue, May 26

8:15 am - 12:20 pm

BSL

SEA

13h 05m

1 stop

10:30 am - 10:20 am

SEA

BSL

14h 50m

2 stops

$660United Airlines

Tue, Apr 14 - Tue, May 26

6:30 am - 11:45 am

BSL

SEA

14h 15m

1 stop

9:15 am - 1:45 pm

SEA

BSL

19h 30m

2 stops

$696Delta

Sun, Apr 5 - Mon, Apr 13

10:15 am - 10:05 pm

BSL

SEA

20h 50m

2 stops

11:15 am - 1:45 pm

SEA

BSL

17h 30m

2 stops

$701Delta

Mon, Sep 7 - Wed, Sep 23

8:15 am - 11:55 am

BSL

SEA

12h 40m

1 stop

6:50 pm - 7:40 pm

SEA

BSL

15h 50m

1 stop

$702United Airlines

Thu, Sep 3 - Thu, Sep 24

8:20 am - 12:20 pm

BSL

SEA

13h 00m

1 stop

2:39 pm - 6:10 pm

SEA

BSL

18h 31m

2 stops

$703Lufthansa

Sat, Apr 4 - Wed, Apr 8

6:10 am - 8:02 pm

BSL

SEA

22h 52m

2 stops

8:20 pm - 6:50 pm

SEA

BSL

13h 30m

1 stop

$707American Airlines

Thu, Sep 3 - Sun, Sep 20

6:30 am - 4:30 pm

BSL

SEA

19h 00m

1 stop

1:30 pm - 1:45 pm

SEA

BSL

15h 15m

1 stop

$708Delta

Tue, Apr 14 - Tue, May 26

9:45 am - 4:59 pm

BSL

SEA

16h 14m

1 stop

6:50 pm - 7:40 pm

SEA

BSL

15h 50m

1 stop

$709Lufthansa

Sun, Sep 6 - Wed, Sep 23

2:50 pm - 1:13 am

BSL

SEA

19h 23m

2 stops

6:50 pm - 7:50 pm

SEA

BSL

16h 00m

1 stop

$710United Airlines

Sat, May 23 - Sat, May 30

United Airlines flights from Basel EuroAirport Swiss to Seattle

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

United Airlines

Apr 14

BSL8:15 amBasel EuroAirport Swiss

13h 05m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

May 26

SEA6:50 pmSeattle/Tacoma Intl

15h 50m

1 stop

BSL7:40 pmBasel EuroAirport Swiss

$653

United Airlines

Apr 14

BSL8:15 amBasel EuroAirport Swiss

13h 05m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

May 26

SEA10:30 amSeattle/Tacoma Intl

14h 50m

2 stops

BSL10:20 amBasel EuroAirport Swiss

$660

United Airlines

Sep 3

BSL8:15 amBasel EuroAirport Swiss

12h 40m

1 stop

SEA11:55 amSeattle/Tacoma Intl

Sep 24

SEA6:50 pmSeattle/Tacoma Intl

15h 50m

1 stop

BSL7:40 pmBasel EuroAirport Swiss

$702

Lufthansa flights from Basel EuroAirport Swiss to Seattle

Our best Lufthansa deals on Basel EuroAirport Swiss to Seattle flight tickets

Lufthansa

Apr 4

BSL8:20 amBasel EuroAirport Swiss

13h 00m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

Apr 8

SEA2:39 pmSeattle/Tacoma Intl

18h 31m

2 stops

BSL6:10 pmBasel EuroAirport Swiss

$703

Lufthansa

Sep 6

BSL9:45 amBasel EuroAirport Swiss

16h 14m

1 stop

SEA4:59 pmSeattle/Tacoma Intl

Sep 23

SEA6:50 pmSeattle/Tacoma Intl

15h 50m

1 stop

BSL7:40 pmBasel EuroAirport Swiss

$709

Lufthansa

May 23

BSL6:45 pmBasel EuroAirport Swiss

26h 35m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

May 30

SEA6:50 pmSeattle/Tacoma Intl

16h 00m

1 stop

BSL7:50 pmBasel EuroAirport Swiss

$725

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

Cheapest round-trip

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Tue 4/14

8:15 am-12:20 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 5/26

6:50 pm-7:40 pm

1 stop15h 50m

$653

Quickest round-trip

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Tue 4/14

8:15 am-12:20 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 5/26

10:30 am-10:20 am

2 stops14h 50m

$660

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 4/5

6:30 am-11:45 am

1 stop14h 15m

Seattle/Tacoma Intl

Mon 4/13

9:15 am-1:45 pm

2 stops19h 30m

$696

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Mon 9/7

10:15 am-10:05 pm

2 stops20h 50m

Seattle/Tacoma Intl

Wed 9/23

11:15 am-1:45 pm

2 stops17h 30m

$701

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 9/3

8:15 am-11:55 am

1 stop12h 40m

Seattle/Tacoma Intl

Thu 9/24

6:50 pm-7:40 pm

1 stop15h 50m

$702

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sat 4/4

8:20 am-12:20 pm

1 stop13h 00m

Seattle/Tacoma Intl

Wed 4/8

2:39 pm-6:10 pm

2 stops18h 31m

$703

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 9/3

6:10 am-8:02 pm

2 stops22h 52m

Seattle/Tacoma Intl

Sun 9/20

8:20 pm-6:50 pm

1 stop13h 30m

$707

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Tue 4/14

6:30 am-4:30 pm

1 stop19h 00m

Seattle/Tacoma Intl

Tue 5/26

1:30 pm-1:45 pm

1 stop15h 15m

$708

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 9/6

9:45 am-4:59 pm

1 stop16h 14m

Seattle/Tacoma Intl

Wed 9/23

6:50 pm-7:40 pm

1 stop15h 50m

$709

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sat 5/23

2:50 pm-1:13 am

2 stops19h 23m

Seattle/Tacoma Intl

Sat 5/30

6:50 pm-7:50 pm

1 stop16h 00m

$710

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

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 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 35m
Direct flights	None

The fastest flight from Basel EuroAirport Swiss to Seattle takes 12h 35m

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 35m 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

Redmond

Marysville

Puyallup

Cle Elum

Lakewood

Tukwila

Federal Way

Fife

Westport

Centralia

Kirkland

Tumwater

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.