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.

$434 Cheap Flights from Basel EuroAirport Swiss to Seattle in 2026/27

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.

11:05 am - 4:50 pmBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

14h 45m1 stop London Heathrow

6:45 pm - 6:45 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

15h 00m1 stop London Heathrow

$695British Airways

Mon, Feb 8 - Mon, Feb 15

8:35 pm - 11:25 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

23h 50m1 stop London Heathrow

6:45 pm - 7:50 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

16h 05m1 stop London Heathrow

$711British Airways

Fri, Dec 18 - Wed, Dec 30

8:50 pm - 11:25 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

23h 35m1 stop London Heathrow

6:45 pm - 6:45 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

15h 00m1 stop London Heathrow

$713British Airways

Wed, Dec 23 - Mon, Dec 28

11:05 am - 12:44 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

22h 39m2 stops London Heathrow Chicago O'Hare Intl

6:45 pm - 6:45 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

15h 00m1 stop London Heathrow

$714British Airways

Mon, Feb 8 - Mon, Feb 15

11:05 am - 12:44 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

22h 39m2 stops London Heathrow Chicago O'Hare Intl

1:51 pm - 6:45 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

19h 54m2 stops Charlotte Douglas London Heathrow

$719American Airlines

Mon, Feb 8 - Mon, Feb 15

10:50 am - 12:32 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

22h 42m2 stops London Heathrow Chicago O'Hare Intl

1:40 pm - 12:10 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

13h 30m1 stop London Heathrow

$720British Airways

Tue, Dec 15 - Sat, Dec 26

8:35 pm - 11:25 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

23h 50m1 stop London Heathrow

11:09 am - 2:55 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

18h 46m2 stops Charlotte Douglas London Heathrow

$726British Airways

Fri, Dec 18 - Wed, Dec 30

6:10 am - 11:35 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

14h 25m1 stop London Heathrow

6:12 am - 6:20 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

27h 08m2 stops Chicago O'Hare Intl London Heathrow

$734Multiple Airlines

Thu, Oct 15 - Mon, Oct 19

4:15 pm - 11:25 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

28h 10m1 stop London Heathrow

6:45 pm - 10:00 amSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

30h 15m1 stop London Heathrow

$735British Airways

Wed, Jan 13 - Sun, Jan 17

4:15 pm - 11:25 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

28h 10m1 stop London Heathrow

6:45 pm - 10:00 amSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

30h 15m1 stop London Heathrow

$737British Airways

Wed, Jan 13 - Sun, Jan 17

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Delta flights from Basel EuroAirport Swiss to Seattle

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

Delta

Oct 8

BSL6:30 amBasel EuroAirport Swiss

14h 22m

1 stop

SEA11:52 amSeattle/Tacoma Intl

Oct 15

SEA7:32 amSeattle/Tacoma Intl

21h 23m

2 stops

BSL1:55 pmBasel EuroAirport Swiss

$765

Delta

Oct 12

BSL6:30 amBasel EuroAirport Swiss

21h 35m

2 stops

SEA7:05 pmSeattle/Tacoma Intl

Oct 19

SEA10:51 amSeattle/Tacoma Intl

17h 54m

2 stops

BSL1:45 pmBasel EuroAirport Swiss

$766

Delta

Oct 8

BSL10:20 amBasel EuroAirport Swiss

20h 45m

2 stops

SEA10:05 pmSeattle/Tacoma Intl

Oct 15

SEA7:32 amSeattle/Tacoma Intl

21h 23m

2 stops

BSL1:55 pmBasel EuroAirport Swiss

$770

American Airlines flights from Basel EuroAirport Swiss to Seattle

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

American Airlines

Feb 8

BSL11:05 amBasel EuroAirport Swiss

22h 39m

2 stops

SEA12:44 amSeattle/Tacoma Intl

Feb 15

SEA1:51 pmSeattle/Tacoma Intl

19h 54m

2 stops

BSL6:45 pmBasel EuroAirport Swiss

$719

American Airlines

Jan 14

BSL11:05 amBasel EuroAirport Swiss

22h 39m

2 stops

SEA12:44 amSeattle/Tacoma Intl

Jan 17

SEA11:28 pmSeattle/Tacoma Intl

34h 17m

2 stops

BSL6:45 pmBasel EuroAirport Swiss

$740

American Airlines

Jan 14

BSL11:05 amBasel EuroAirport Swiss

31h 30m

2 stops

SEA9:35 amSeattle/Tacoma Intl

Jan 17

SEA10:25 amSeattle/Tacoma Intl

24h 00m

2 stops

BSL7:25 pmBasel EuroAirport Swiss

$741

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

Quickest round-trip

BaselSeattle

BSL Basel EuroAirport Swiss - SEA Seattle/Tacoma Intl

BSLSEA

Basel EuroAirport Swiss

Mon 2/8

11:05 am-4:50 pm

1 stop14h 45m

Seattle/Tacoma Intl

Mon 2/15

6:45 pm-6:45 pm

1 stop15h 00m

$695

BaselSeattle

BSL Basel EuroAirport Swiss - SEA Seattle/Tacoma Intl

BSLSEA

Basel EuroAirport Swiss

Fri 12/18

8:35 pm-11:25 am

1 stop23h 50m

Seattle/Tacoma Intl

Wed 12/30

6:45 pm-7:50 pm

1 stop16h 05m

$711

BaselSeattle

BSL Basel EuroAirport Swiss - SEA Seattle/Tacoma Intl

BSLSEA

Basel EuroAirport Swiss

Wed 12/23

8:50 pm-11:25 am

1 stop23h 35m

Seattle/Tacoma Intl

Mon 12/28

6:45 pm-6:45 pm

1 stop15h 00m

$713

BaselSeattle

BSL Basel EuroAirport Swiss - SEA Seattle/Tacoma Intl

BSLSEA

Basel EuroAirport Swiss

Mon 2/8

11:05 am-12:44 am

2 stops22h 39m

Seattle/Tacoma Intl

Mon 2/15

6:45 pm-6:45 pm

1 stop15h 00m

$714

BaselSeattle

BSL Basel EuroAirport Swiss - SEA Seattle/Tacoma Intl

BSLSEA

Basel EuroAirport Swiss

Mon 2/8

11:05 am-12:44 am

2 stops22h 39m

Seattle/Tacoma Intl

Mon 2/15

1:51 pm-6:45 pm

2 stops19h 54m

$719

BaselSeattle

BSL Basel EuroAirport Swiss - SEA Seattle/Tacoma Intl

BSLSEA

Basel EuroAirport Swiss

Tue 12/15

10:50 am-12:32 am

2 stops22h 42m

Seattle/Tacoma Intl

Sat 12/26

1:40 pm-12:10 pm

1 stop13h 30m

$720

BaselSeattle

BSL Basel EuroAirport Swiss - SEA Seattle/Tacoma Intl

BSLSEA

Basel EuroAirport Swiss

Fri 12/18

8:35 pm-11:25 am

1 stop23h 50m

Seattle/Tacoma Intl

Wed 12/30

11:09 am-2:55 pm

2 stops18h 46m

$726

BaselSeattle

BSL Basel EuroAirport Swiss - SEA Seattle/Tacoma Intl

BSLSEA

Basel EuroAirport Swiss

Thu 10/15

6:10 am-11:35 am

1 stop14h 25m

Seattle/Tacoma Intl

Mon 10/19

6:12 am-6:20 pm

2 stops27h 08m

$734

BaselSeattle

BSL Basel EuroAirport Swiss - SEA Seattle/Tacoma Intl

BSLSEA

Basel EuroAirport Swiss

Wed 1/13

4:15 pm-11:25 am

1 stop28h 10m

Seattle/Tacoma Intl

Sun 1/17

6:45 pm-10:00 am

1 stop30h 15m

$735

BaselSeattle

BSL Basel EuroAirport Swiss - SEA Seattle/Tacoma Intl

BSLSEA

Basel EuroAirport Swiss

Wed 1/13

4:15 pm-11:25 am

1 stop28h 10m

Seattle/Tacoma Intl

Sun 1/17

6:45 pm-10:00 am

1 stop30h 15m

$737

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

Best Price Found	$434
Fastest flight time	14h 45m
Direct flights	None

The best one-way flight to Seattle from Basel EuroAirport Swiss in the past 72 hours is $434. The best round-trip flight deal from Basel EuroAirport Swiss to Seattle found on momondo in the last 72 hours is $695.

The fastest flight from Basel EuroAirport Swiss to Seattle takes 14h 45m

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

Frequently asked questions about flying from Basel EuroAirport Swiss to Seattle

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. 14h 45m 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.

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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.

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