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

Turkish Airlines, Lufthansa, and British Airways are the most popular carriers operating from Basel to Seattle/Tacoma Intl

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

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

How old do you have to be to fly from Basel 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 to Seattle/Tacoma Intl Airport.

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

The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$532 Cheap Flights from Basel to Seattle in 2025/26

Q: What is the typical price of a round-trip flight between Basel and Seattle?

Prices are currently low for flights on this route. Typical prices usually range from $582 to $639. The lowest price recently found on this route was $532.

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Find the cheapest flights from Basel to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

6:35 am - 11:35 amBSL-SEA

14h 00m1 stop

2:52 pm - 10:20 pmSEA-BSL

23h 28m2 stops

$532Multiple Airlines

Find Deal

Mon, Oct 20 - Sun, Oct 26

6:35 am - 6:20 pmBSL-SEA

20h 45m1 stop

11:31 am - 3:05 pmSEA-BSL

19h 34m2 stops

$534American Airlines

Find Deal

Mon, Oct 20 - Tue, Oct 28

7:00 am - 11:18 pmBSL-SEA

25h 18m2 stops

2:46 pm - 10:20 pmSEA-BSL

22h 34m2 stops

$540American Airlines

Find Deal

Tue, Nov 4 - Sun, Nov 9

11:05 am - 11:18 pmBSL-SEA

21h 13m2 stops

6:50 pm - 6:15 pmSEA-BSL

14h 25m1 stop

$541British Airways

Find Deal

Thu, Nov 6 - Mon, Nov 10

12:10 pm - 10:54 amBSL-SEA

31h 44m2 stops

1:35 pm - 10:20 pmSEA-BSL

24h 45m2 stops

$543Multiple Airlines

Find Deal

Mon, Oct 20 - Sun, Oct 26

6:20 am - 7:27 pmBSL-SEA

21h 07m2 stops

11:34 am - 2:55 pmSEA-BSL

18h 21m2 stops

$545British Airways

Find Deal

Wed, Oct 29 - Wed, Nov 5

11:15 am - 12:45 pmBSL-SEA

33h 30m1 stop

2:05 pm - 1:50 pmSEA-BSL

14h 45m1 stop

$559Air France

Find Deal

Wed, Oct 29 - Wed, Nov 5

6:25 pm - 4:05 pmBSL-SEA

30h 40m1 stop

3:10 pm - 9:50 amSEA-BSL

34h 40m1 stop

$562Air France

Find Deal

Mon, Oct 20 - Sun, Oct 26

6:05 am - 11:45 amBSL-SEA

14h 40m1 stop

9:43 am - 5:25 pmSEA-BSL

22h 42m2 stops

$566Delta

Find Deal

Thu, Nov 6 - Mon, Nov 10

6:15 am - 11:50 amBSL-SEA

14h 35m1 stop

1:30 pm - 1:10 pmSEA-BSL

14h 40m1 stop

$602Delta

Find Deal

Mon, Oct 6 - Sun, Oct 12

British Airways flights from Basel to Seattle

Our best British Airways deals on Basel to Seattle flight tickets

British Airways

Nov 6

BSL11:05 amBasel EuroAirport Swiss

21h 13m

2 stops

SEA11:18 pmSeattle/Tacoma Intl

Nov 10

SEA6:50 pmSeattle/Tacoma Intl

14h 25m

1 stop

BSL6:15 pmBasel EuroAirport Swiss

$541

Find similar

British Airways

Oct 29

BSL6:20 amBasel EuroAirport Swiss

21h 07m

2 stops

SEA7:27 pmSeattle/Tacoma Intl

Nov 5

SEA11:34 amSeattle/Tacoma Intl

18h 21m

2 stops

BSL2:55 pmBasel EuroAirport Swiss

$545

Find similar

British Airways

Nov 4

BSL7:00 amBasel EuroAirport Swiss

13h 30m

1 stop

SEA11:30 amSeattle/Tacoma Intl

Nov 12

SEA6:50 pmSeattle/Tacoma Intl

18h 15m

1 stop

BSL10:05 pmBasel EuroAirport Swiss

$561

Find similar

Delta flights from Basel to Seattle

Our best Delta deals on Basel to Seattle flight tickets

Delta

Nov 6

BSL6:05 amBasel EuroAirport Swiss

14h 40m

1 stop

SEA11:45 amSeattle/Tacoma Intl

Nov 10

SEA9:43 amSeattle/Tacoma Intl

22h 42m

2 stops

BSL5:25 pmBasel EuroAirport Swiss

$566

Find similar

Delta

Sep 22

BSL6:15 amBasel EuroAirport Swiss

18h 51m

2 stops

SEA4:06 pmSeattle/Tacoma Intl

Oct 1

SEA5:40 pmSeattle/Tacoma Intl

15h 10m

1 stop

BSL5:50 pmBasel EuroAirport Swiss

$572

Find similar

Delta

Oct 6

BSL6:15 amBasel EuroAirport Swiss

14h 35m

1 stop

SEA11:50 amSeattle/Tacoma Intl

Oct 12

SEA1:30 pmSeattle/Tacoma Intl

14h 40m

1 stop

BSL1:10 pmBasel EuroAirport Swiss

$602

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Mon 10/20

6:35 am-11:35 am

1 stop14h 00m

Seattle/Tacoma Intl

Sun 10/26

2:52 pm-10:20 pm

2 stops23h 28m

$532

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Mon 10/20

6:35 am-6:20 pm

1 stop20h 45m

Seattle/Tacoma Intl

Tue 10/28

11:31 am-3:05 pm

2 stops19h 34m

$534

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Tue 11/4

7:00 am-11:18 pm

2 stops25h 18m

Seattle/Tacoma Intl

Sun 11/9

2:46 pm-10:20 pm

2 stops22h 34m

$540

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 11/6

11:05 am-11:18 pm

2 stops21h 13m

Seattle/Tacoma Intl

Mon 11/10

6:50 pm-6:15 pm

1 stop14h 25m

$541

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Mon 10/20

12:10 pm-10:54 am

2 stops31h 44m

Seattle/Tacoma Intl

Sun 10/26

1:35 pm-10:20 pm

2 stops24h 45m

$543

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Wed 10/29

6:20 am-7:27 pm

2 stops21h 07m

Seattle/Tacoma Intl

Wed 11/5

11:34 am-2:55 pm

2 stops18h 21m

$545

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Wed 10/29

11:15 am-12:45 pm

1 stop33h 30m

Seattle/Tacoma Intl

Wed 11/5

2:05 pm-1:50 pm

1 stop14h 45m

$559

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Mon 10/20

6:25 pm-4:05 pm

1 stop30h 40m

Seattle/Tacoma Intl

Sun 10/26

3:10 pm-9:50 am

1 stop34h 40m

$562

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 11/6

6:05 am-11:45 am

1 stop14h 40m

Seattle/Tacoma Intl

Mon 11/10

9:43 am-5:25 pm

2 stops22h 42m

$566

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Mon 10/6

6:15 am-11:50 am

1 stop14h 35m

Seattle/Tacoma Intl

Sun 10/12

1:30 pm-1:10 pm

1 stop14h 40m

$602

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 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 typical price of a round-trip flight between Basel and Seattle?

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

On average, the least expensive day to fly to Seattle from Basel 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 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 to Seattle

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

Estimated round-trip price

Cheap Basel to Seattle (EAP to SEA) flight deals and tips

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

Direct flights	None

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

Search flight deals

How far is Basel to Seattle/Tacoma Intl by plane?
A flight from Basel to Seattle/Tacoma Intl will travel around 5202.0 mi. A reasonable flight in good conditions will take 12h 30m.
When did momondo last update prices for flights from Basel to Seattle/Tacoma Intl Airport?
Prices for flights from Basel to Seattle/Tacoma Intl Airport refresh daily.
How old do you have to be to fly from Basel 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 to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Leavenworth

Tacoma

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Puyallup

Federal Way

Kirkland

Tukwila

Shoreline

Lakewood

Centralia

Fife

Cle Elum

Redmond

Westport

Why use momondo?

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

Finding the right flight to Seattle from Basel is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Seattle from Basel which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Basel to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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.