Which airports can I use when flying from Seattle to Basel EuroAirport Swiss?

Flights from Seattle to Basel EuroAirport Swiss usually depart from Seattle/Tacoma Intl (SEA) and arrive at Basel EuroAirport Swiss (BSL).

What cabin classes can I book on flights from Seattle to Basel EuroAirport Swiss?

Two cabin classes are available on flights from Seattle to Basel EuroAirport Swiss: • Economy Class • Business Class

Which airports do connecting flights from Seattle to Basel EuroAirport Swiss pass through?

One-stop flights from Seattle to Basel EuroAirport Swiss most commonly connect through: • Amsterdam Schiphol (AMS) - 41% of one-stop connections • London Heathrow (LHR) - 22% of one-stop connections • Frankfurt am Main (FRA) - 19% of one-stop connections • Munich Franz Josef Strauss (MUC) - 19% of one-stop connections Amsterdam Schiphol (AMS) handles the largest share of one-stop connections on this route.

Can I save money by using flexible dates for flights from Seattle to Basel EuroAirport Swiss?

On the Seattle to Basel EuroAirport Swiss route, being flexible with your departure day can save you up to 46%. Saturday is the cheapest day at $492 round-trip on average, while Sunday is the most expensive at $911: a $419 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

How long is a flight from Seattle to Basel EuroAirport Swiss?

A nonstop flight from Seattle to Basel EuroAirport Swiss takes 0h 00m, covering 5,207 miles.

Do I need a passport to fly from Seattle to Basel EuroAirport Swiss?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

How are flight prices from Seattle to Basel EuroAirport Swiss looking right now?

One-way fares from Seattle to Basel EuroAirport Swiss are currently lower than usual. Average one-way flight prices are about $383, which is 17% below the typical average for this route.

How much time can I save by choosing a different layover airport from Seattle to Basel EuroAirport Swiss?

Flying via Frankfurt am Main (FRA) gives the shortest average 1-stop total travel time at 13h 08m, compared with 14h 19m via London Heathrow (LHR) and 14h 31m via Munich Franz Josef Strauss (MUC).

What is the time difference between Seattle and Basel EuroAirport Swiss?

Basel EuroAirport Swiss is 9 hours ahead of Seattle (Central European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Basel EuroAirport Swiss (BSL)?

Basel EuroAirport Swiss (BSL) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include: • Alamo • Europcar • Hertz • Budget • Dollar

How much should I expect to pay for a Seattle to Basel EuroAirport Swiss flight?

Round-trip flights from Seattle to Basel EuroAirport Swiss range from $578 to $889, with an average of $725 over the past 12 months. Anything below $578 counts as a good deal.

What is the cheapest airline to fly from Seattle to Basel EuroAirport Swiss?

Air France ($708) and Delta ($713) are the cheapest airlines to fly round-trip from Seattle to Basel EuroAirport Swiss according to KAYAK data over the last 5 days.

What is the most popular layover airport when flying from Seattle to Basel EuroAirport Swiss?

Amsterdam Schiphol (AMS) is the most popular layover for the Seattle to Basel EuroAirport Swiss route. 41% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via AMS.

What is the cheapest layover airport when flying from Seattle to Basel EuroAirport Swiss?

Flights via London Heathrow (LHR) offer the most affordable fares, with an average round-trip price of $643. Based on KAYAK data over the past 3 months.

When flying from Seattle to Basel EuroAirport Swiss which airport offers the shortest layover?

Frankfurt am Main (FRA) had the shortest average connection time for Seattle to Basel EuroAirport Swiss layovers at 467 minutes over the past 3 months.

$373 CHEAP FLIGHTS from Seattle to Basel (SEA - BSL)

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Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$708

Typical prices: $578-$889

Air France

Thu 10/25Thu 11/1

SEA - BSL • 1 stop

Cheapest one-way

$373

Typical prices: $419-$549

Multiple Airlines

Sat 11/10

SEA - BSL • 3 stops

Nonstop flights

Not available

There are currently no direct flights between Seattle and Basel EuroAirport Swiss. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

February

Cheapest • 33% price drop

August

Most popular

Good to know

Top layover airports

London Heathrow (LHR)

Cheapest • Avg $643 (round-trip)

Frankfurt am Main (FRA)

Shortest trip • 13h 08m (one-way)

Insights

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We hope you love your trip to Basel EuroAirport Swiss!

Flight Deals

Cheap Flights from Seattle to Basel (SEA-BSL)

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 Seattle to Basel

Sun, Oct 25 - Sun, Nov 1

3:25 pm - 5:35 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

18h 10m1 stop Amsterdam Schiphol

6:00 am - 12:47 pmBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

14h 47m1 stop Amsterdam Schiphol

$708Air France

Sun, Oct 25 - Sun, Nov 1

9:42 am - 1:25 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

19h 43m2 stops Salt Lake City Amsterdam Schiphol

10:45 am - 3:14 pmBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

13h 29m1 stop Paris Charles de Gaulle

$713Delta

Tue, Dec 1 - Fri, Dec 11

7:05 pm - 9:50 amSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

29h 45m1 stop Istanbul

10:45 am - 5:10 pmBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

39h 25m1 stop Istanbul

$731Turkish Airlines

Sun, Nov 29 - Wed, Dec 9

3:25 pm - 1:55 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

13h 30m1 stop Paris Charles de Gaulle

2:00 pm - 11:50 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

30h 50m1 stop Amsterdam Schiphol

$740Delta

Wed, Dec 2 - Thu, Dec 10

3:25 pm - 10:00 amSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

33h 35m1 stop Paris Charles de Gaulle

6:00 am - 11:50 amBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

14h 50m1 stop Amsterdam Schiphol

$742Delta

Sun, Nov 29 - Fri, Dec 11

3:25 pm - 1:55 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

13h 30m1 stop Paris Charles de Gaulle

10:45 am - 3:13 pmBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

13h 28m1 stop Paris Charles de Gaulle

$747Delta

Sun, Nov 29 - Wed, Dec 9

2:50 pm - 7:30 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

19h 40m1 stop Munich Franz Josef Strauss

2:40 pm - 1:22 pmBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

31h 42m3 stops Frankfurt am Main Toronto Pearson Intl Houston George Bush Intcntl

$750United Airlines

Tue, Dec 1 - Fri, Dec 11

4:05 pm - 1:55 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

12h 50m1 stop Paris Charles de Gaulle

6:00 am - 5:18 pmBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

20h 18m2 stops Amsterdam Schiphol Los Angeles

$751Delta

Wed, Dec 2 - Fri, Dec 11

2:35 pm - 5:25 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

17h 50m1 stop Amsterdam Schiphol

10:45 am - 3:13 pmBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

13h 28m1 stop Paris Charles de Gaulle

$752Air France

Sun, Nov 29 - Tue, Dec 8

2:50 pm - 12:20 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

12h 30m1 stop Munich Franz Josef Strauss

9:30 am - 11:13 pmBSL Basel EuroAirport Swiss-SEA Seattle/Tacoma Intl

22h 43m3 stops Munich Franz Josef Strauss Denver Intl San Francisco

$754United Airlines

Recent one-way flight deals from Seattle to Basel

Tue, Nov 10

2:35 pm - 4:00 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

40h 25m3 stops Reykjavik Keflavik Intl Oslo Gardermoen Krakow J. Paul II Balice

$373Multiple Airlines

Mon, Sep 28

8:53 am - 3:35 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

45h 42m3 stops Newark Paris Orly Wrocław Strachowice

$380Multiple Airlines

Fri, Sep 25

3:40 pm - 8:55 amSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

32h 15m3 stops Reykjavik Keflavik Intl Brussels Bruxelles-National Palma de Mallorca Son Sant Joan

$381Multiple Airlines

Fri, Sep 25

3:40 pm - 8:55 amSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

32h 15m3 stops Reykjavik Keflavik Intl Brussels Bruxelles-National Palma de Mallorca Son Sant Joan

$382Multiple Airlines

Sun, Sep 27

3:40 pm - 2:10 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

37h 30m3 stops Reykjavik Keflavik Intl Václav Havel Prague Krakow J. Paul II Balice

$383Multiple Airlines

Fri, Nov 13

2:35 pm - 8:10 amSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

32h 35m3 stops Reykjavik Keflavik Intl Manchester Bratislava - M. R. Štefánik

$384Multiple Airlines

Sun, Sep 27

3:40 pm - 10:45 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

46h 05m3 stops Reykjavik Keflavik Intl Václav Havel Prague Krakow J. Paul II Balice

$385Multiple Airlines

Fri, Sep 25

3:40 pm - 8:55 amSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

32h 15m3 stops Reykjavik Keflavik Intl Brussels Bruxelles-National Palma de Mallorca Son Sant Joan

$388Multiple Airlines

Sat, Sep 26

7:00 pm - 3:40 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

35h 40m3 stops Reykjavik Keflavik Intl Glasgow Intl London Stansted

$390Multiple Airlines

Mon, Sep 28

3:40 pm - 1:20 pmSEA Seattle/Tacoma Intl-BSL Basel EuroAirport Swiss

36h 40m3 stops Reykjavik Keflavik Intl Manchester Barcelona-El Prat

$396Multiple Airlines

Booking Insights

Price, demand and travel trends for Seattle to Basel EuroAirport Swiss flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Seattle to Basel EuroAirport Swiss with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Seattle to Basel EuroAirport Swiss?

Round-trip flights from Seattle to Basel EuroAirport Swiss start at $708. Prices are typical for this route right now, with typical round-trip fares ranging from $578 to $889. The lowest price found in the past 5 days was $708 on Air France.

Find deals

Low season	May
High season	August
Cheapest flight	$373

Flight from Seattle to Basel EuroAirport Swiss

When to book flights from Seattle to Basel

Are your dates flexible? Find out the best times to travel from Seattle to Basel based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Seattle to Basel EuroAirport Swiss?
Flights from Seattle to Basel EuroAirport Swiss usually depart from Seattle/Tacoma Intl (SEA) and arrive at Basel EuroAirport Swiss (BSL).
What cabin classes can I book on flights from Seattle to Basel EuroAirport Swiss?
Two cabin classes are available on flights from Seattle to Basel EuroAirport Swiss:

• Economy Class
• Business Class
Which airports do connecting flights from Seattle to Basel EuroAirport Swiss pass through?
One-stop flights from Seattle to Basel EuroAirport Swiss most commonly connect through:

• Amsterdam Schiphol (AMS) - 41% of one-stop connections
• London Heathrow (LHR) - 22% of one-stop connections
• Frankfurt am Main (FRA) - 19% of one-stop connections
• Munich Franz Josef Strauss (MUC) - 19% of one-stop connections

Amsterdam Schiphol (AMS) handles the largest share of one-stop connections on this route.
Can I save money by using flexible dates for flights from Seattle to Basel EuroAirport Swiss?
On the Seattle to Basel EuroAirport Swiss route, being flexible with your departure day can save you up to 46%. Saturday is the cheapest day at $492 round-trip on average, while Sunday is the most expensive at $911: a $419 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
How long is a flight from Seattle to Basel EuroAirport Swiss?
A nonstop flight from Seattle to Basel EuroAirport Swiss takes 0h 00m, covering 5,207 miles.
Do I need a passport to fly from Seattle to Basel EuroAirport Swiss?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How are flight prices from Seattle to Basel EuroAirport Swiss looking right now?
One-way fares from Seattle to Basel EuroAirport Swiss are currently lower than usual. Average one-way flight prices are about $383, which is 17% below the typical average for this route.
How much time can I save by choosing a different layover airport from Seattle to Basel EuroAirport Swiss?
Flying via Frankfurt am Main (FRA) gives the shortest average 1-stop total travel time at 13h 08m, compared with 14h 19m via London Heathrow (LHR) and 14h 31m via Munich Franz Josef Strauss (MUC).
What is the time difference between Seattle and Basel EuroAirport Swiss?
Basel EuroAirport Swiss is 9 hours ahead of Seattle (Central European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Basel EuroAirport Swiss (BSL)?
Basel EuroAirport Swiss (BSL) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:
• Alamo
• Europcar
• Hertz
• Budget
• Dollar
How much should I expect to pay for a Seattle to Basel EuroAirport Swiss flight?
Round-trip flights from Seattle to Basel EuroAirport Swiss range from $578 to $889, with an average of $725 over the past 12 months. Anything below $578 counts as a good deal.

If your dates can be flexible, aim for a Saturday departure instead of Sunday. On this route, Saturday flights average $492 - about $419 less than Sunday (46% savings) based on the last 12 months.
If you can choose when to travel, plan your Seattle to Basel EuroAirport Swiss trip for February. Fares historically average $485 round-trip in that month - typically $1,574 less than the most expensive month, which is October (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Basel EuroAirport Swiss.
- Airport Hotel Basel

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SEA - BSL

$373 Find Cheap Flights from Seattle to Basel - Compare and Save

Everything you should know

Cheap Flights from Seattle to Basel (SEA-BSL)

Recent round-trip flight deals from Seattle to Basel

Recent one-way flight deals from Seattle to Basel

Recent last minute flight deals from Seattle to Basel

Price, demand and travel trends for Seattle to Basel EuroAirport Swiss flights

How much is a round-trip flight from Seattle to Basel EuroAirport Swiss?

What is the cheapest airline to fly from Seattle to Basel EuroAirport Swiss?

What is the most popular layover airport when flying from Seattle to Basel EuroAirport Swiss?

What is the cheapest layover airport when flying from Seattle to Basel EuroAirport Swiss?

When flying from Seattle to Basel EuroAirport Swiss which airport offers the shortest layover?

Key details for Seattle to Basel EuroAirport Swiss flights

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Your Seattle to Basel EuroAirport Swiss flight questions, answered

Your guide to booking Seattle to Basel EuroAirport Swiss flights

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