How long is the flight from State of Washington to Basel EuroAirport Swiss?

British Airways and United Airlines can get you from State of Washington to Basel EuroAirport Swiss in just under 19h 30m. Your travel time can differ by up to 10h 55m. The distance from State of Washington to Basel EuroAirport Swiss is about 5207 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Basel EuroAirport Swiss ranges from 1.9 - 3.4 inches per month. June is typically the wettest month, when rainfall can reach 3.4 in. February is typically the driest time to visit Basel EuroAirport Swiss when rainfall is around 1.9 in.

If weather is an important factor for your trip to Basel EuroAirport Swiss, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

What are the most popular routes from State of Washington to Basel EuroAirport Swiss?

When deciding which route to take from State of Washington to Basel EuroAirport Swiss consider Seattle/Tacoma Intl - Basel EuroAirport Swiss, Portland - Basel EuroAirport Swiss or Pasco Tri Cities - Basel EuroAirport Swiss as they are the most popular.

What airport do you fly into for flights to Basel from Washington?

Basel EuroAirport Swiss (BSL) is the airport you will fly into if you book a flight from Washington to Basel. It is only a 3.6 mi journey from EuroAirport Swiss (BSL) to Basel’s city center.

Can I find deals for flights from Washington to Basel that include hotel bookings?

Yes. In addition to deals on Washington to Basel flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington to Basel?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Basel.

Can I find deals for business class flights from Washington to Basel?

Yes. Cheapflights offers flight deals from Washington to Basel by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$400+ Flights from Washington to Basel EuroAirport Swiss

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Cheap flight deals from Washington to Basel

Cheapest flights from Washington to Basel
Explore the most affordable flight options available from Washington to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Thu 12/253:05 pmSEA - BSL

1 stop34h 35mAir France

Thu 1/16:05 amBSL - SEA

1 stop14h 45mAir France

Deal found 12/16

$1,365

Thu 12/2510:55 amSEA - BSL

2 stops19h 10mMultiple Airlines

Thu 1/16:05 amBSL - SEA

2 stops22h 23mMultiple Airlines

Deal found 12/17

$1,377

Fri 12/267:00 amSEA - BSL

2 stops18h 05mLufthansa

Mon 1/51:10 pmBSL - SEA

2 stops40h 47mLufthansa

Deal found 12/16

$1,394

Mon 12/222:05 pmSEA - BSL

1 stop14h 45mMultiple Airlines

Tue 12/306:05 amBSL - SEA

1 stop14h 45mMultiple Airlines

Deal found 12/16

$2,049

Mon 12/227:10 amSEA - BSL

2 stops18h 30mDelta

Tue 12/306:05 amBSL - SEA

2 stops19h 02mDelta

Deal found 12/17

$2,070

Mon 12/227:11 pmSEA - BSL

2 stops42h 09mBritish Airways

Tue 12/307:05 pmBSL - SEA

2 stops32h 24mBritish Airways

Deal found 12/16

$2,276

Mon 12/292:47 pmPDX - BSL

2 stops18h 28mMultiple Airlines

Fri 1/911:15 amBSL - PDX

1 stop13h 40mMultiple Airlines

Deal found 12/17

$3,644

Sat 12/2011:02 amPDX - BSL

2 stops16h 28mMultiple Airlines

Sat 12/277:10 amBSL - PDX

2 stops16h 04mMultiple Airlines

Deal found 12/15

$6,201

Sat 12/2010:52 amSEA - BSL

2 stops16h 38mMultiple Airlines

Mon 12/2210:55 amBSL - SEA

2 stops16h 34mMultiple Airlines

Deal found 12/16

$6,247

Mon 12/222:50 pmSEA - BSL

2 stops18h 25mMultiple Airlines

Sun 1/49:50 amBSL - SEA

1 stop12h 30mMultiple Airlines

Deal found 12/17

$6,474

Fri 12/265:59 pmSEA - BSL

3 stops42h 51mMultiple Airlines

Mon 1/54:00 pmBSL - SEA

3 stops40h 04mMultiple Airlines

Deal found 12/16

$11,956

Best flights from Washington to Basel
Discover carefully curated flight deals from Washington to Basel that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Wed 1/146:50 pmSEA - BSL

1 stop30h 25mBritish Airways

Sun 1/1811:20 amBSL - SEA

1 stop14h 35mBritish Airways

Deal found 12/15

$487

Wed 1/143:10 pmSEA - BSL

1 stop19h 30mUnited Airlines

Sun 1/181:10 pmBSL - SEA

2 stops35h 34mUnited Airlines

Deal found 12/15

$495

Wed 1/145:45 pmPDX - BSL

1 stop15h 55mBritish Airways

Sun 1/1811:20 amBSL - PDX

1 stop13h 35mBritish Airways

Deal found 12/15

$487

Thu 1/295:00 amPSC - BSL

2 stops22h 30mUnited Airlines

Mon 2/29:50 amBSL - PSC

2 stops34h 47mUnited Airlines

Deal found 12/15

$499

Sat 1/318:40 amSEA - BSL

2 stops18h 50mUnited Airlines

Sat 2/79:50 amBSL - SEA

2 stops20h 07mUnited Airlines

Deal found 12/17

$499

Wed 1/141:24 pmPDX - BSL

3 stops17h 41mUnited Airlines

Wed 1/219:50 amBSL - PDX

2 stops17h 20mUnited Airlines

Deal found 12/17

$499

Mon 3/3012:49 pmPDX - BSL

2 stops16h 11mMultiple Airlines

Mon 4/69:45 amBSL - PDX

2 stops17h 44mMultiple Airlines

Deal found 12/16

$1,258

Wed 2/115:45 pmPDX - BSL

1 stop15h 55mBritish Airways

Sun 2/154:25 pmBSL - PDX

1 stop32h 30mBritish Airways

Deal found 12/16

$585

Wed 2/118:30 amPDX - BSL

2 stops22h 35mUnited Airlines

Sun 2/151:10 pmBSL - PDX

2 stops18h 30mUnited Airlines

Deal found 12/16

$499

Wed 1/712:35 pmSEA - BSL

2 stops22h 05mUnited Airlines

Fri 2/69:50 amBSL - SEA

1 stop12h 30mUnited Airlines

Deal found 12/16

$589

Mon 1/511:59 pmSEA - BSL

2 stops34h 41mUnited Airlines

Fri 2/69:50 amBSL - SEA

1 stop12h 30mUnited Airlines

Deal found 12/16

$589

Tue 1/611:00 amSEA - BSL

2 stops16h 30mUnited Airlines

Wed 2/49:50 amBSL - SEA

1 stop12h 30mUnited Airlines

Deal found 12/16

$589

Wed 1/145:00 amPDX - BSL

2 stops26h 05mUnited Airlines

Sun 1/189:50 amBSL - PDX

2 stops23h 49mUnited Airlines

Deal found 12/15

$599

Sat 2/1410:56 amPDX - BSL

2 stops16h 34mMultiple Airlines

Fri 2/202:20 pmBSL - PDX

2 stops17h 59mMultiple Airlines

Deal found 12/16

$1,307

Wed 3/187:49 pmPDX - BSL

2 stops15h 51mMultiple Airlines

Fri 3/272:20 pmBSL - PDX

2 stops18h 24mMultiple Airlines

Deal found 12/17

$1,369

Sun 3/225:30 pmPDX - BSL

2 stops20h 50mBritish Airways

Sat 3/283:00 pmBSL - PDX

2 stops37h 38mBritish Airways

Deal found 12/16

$1,451

Last-minute flights from Washington to Basel
Discover last-minute flight deals from Washington to Basel. Data last updated December 18, 2025 and is based on user searches.

Tue 1/611:00 amSEA - BSL

2 stops16h 30mUnited Airlines

Wed 2/49:50 amBSL - SEA

1 stop12h 30mUnited Airlines

Deal found 12/16

$589

Tue 1/63:10 pmSEA - BSL

1 stop21h 55mMultiple Airlines

Thu 2/56:05 amBSL - SEA

2 stops17h 55mMultiple Airlines

Deal found 12/16

$595

Wed 1/77:40 amSEA - BSL

2 stops18h 00mMultiple Airlines

Thu 2/56:05 amBSL - SEA

1 stop14h 35mMultiple Airlines

Deal found 12/16

$594

Wed 1/77:10 amSEA - BSL

2 stops25h 15mDelta

Tue 2/311:15 amBSL - SEA

1 stop33h 25mDelta

Deal found 12/16

$597

Tue 1/132:10 pmSEA - BSL

2 stops20h 30mLufthansa

Tue 1/209:50 amBSL - SEA

2 stops18h 26mLufthansa

Deal found 12/16

$470

Tue 1/138:04 amSEA - BSL

2 stops29h 16mBritish Airways

Tue 1/207:00 amBSL - SEA

1 stop18h 55mBritish Airways

Deal found 12/16

$482

Tue 1/1312:35 pmSEA - BSL

3 stops42h 30mUnited Airlines

Tue 1/209:50 amBSL - SEA

2 stops24h 09mUnited Airlines

Deal found 12/16

$510

Wed 1/146:50 pmSEA - BSL

1 stop18h 15mBritish Airways

Sun 1/186:35 amBSL - SEA

1 stop19h 20mBritish Airways

Deal found 12/16

$487

Wed 1/145:45 pmPDX - BSL

1 stop15h 55mBritish Airways

Sun 1/1811:20 amBSL - PDX

1 stop13h 35mBritish Airways

Deal found 12/15

$487

Wed 1/143:10 pmSEA - BSL

1 stop19h 30mUnited Airlines

Sun 1/181:10 pmBSL - SEA

2 stops35h 34mUnited Airlines

Deal found 12/16

$495

Wed 1/141:24 pmPDX - BSL

3 stops17h 41mUnited Airlines

Wed 1/219:50 amBSL - PDX

2 stops17h 20mUnited Airlines

Deal found 12/17

$499

Thu 1/296:00 amPSC - BSL

2 stops21h 30mUnited Airlines

Mon 2/29:50 amBSL - PSC

2 stops34h 47mUnited Airlines

Deal found 12/16

$499

One-way flights from Washington to Basel
Search for one-way flight options from Washington to Basel. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Fri 1/163:10 pmSEA - BSL

1 stop15h 55mLufthansa

Deal found 12/18

$400

Sun 2/83:10 pmSEA - BSL

2 stops13h 35mMultiple Airlines

Deal found 12/16

$416

Fri 1/163:10 pmSEA - BSL

3 stops35h 35mMultiple Airlines

Deal found 12/18

$422

Mon 6/18:20 pmSEA - BSL

1 stop13h 00mBritish Airways

Deal found 12/16

$629

Tue 5/263:30 pmPDX - BSL

2 stops17h 35mMultiple Airlines

Deal found 12/16

$827

Find flight deals from Washington to Basel

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$470 (Cheapflightsfares)
One-way from	$400 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$835

Provider with most accurate pricing for Seattle/Tacoma Intl-Basel (EAP) flight deals.

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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Basel (EAP) flights.

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From Washington to Basel EuroAirport Swiss

Search Deals

One-way flight from Washington to Basel EuroAirport Swiss

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($102 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 1/14

6:50 pm-10:15 am

1 stop30h 25m

Basel EuroAirport Swiss

Sun 1/18

11:20 am-4:55 pm

1 stop14h 35m

$487

PortlandBasel

PDX - BSL

PDXBSL

Portland

Wed 1/14

5:45 pm-6:40 pm

1 stop15h 55m

Basel EuroAirport Swiss

Sun 1/18

11:20 am-3:55 pm

1 stop13h 35m

$487

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 1/14

3:10 pm-7:40 pm

1 stop19h 30m

Basel EuroAirport Swiss

Sun 1/18

1:10 pm-3:44 pm

2 stops35h 34m

$495

PascoBasel

PSC - BSL

PSCBSL

Pasco Tri Cities

Thu 1/29

5:00 am-12:30 pm

2 stops22h 30m

Basel EuroAirport Swiss

Mon 2/2

9:50 am-11:37 am

2 stops34h 47m

$499

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sat 1/31

8:40 am-12:30 pm

2 stops18h 50m

Basel EuroAirport Swiss

Sat 2/7

9:50 am-8:57 pm

2 stops20h 07m

$499

PortlandBasel

PDX - BSL

PDXBSL

Portland

Wed 1/14

1:24 pm-4:05 pm

3 stops17h 41m

Basel EuroAirport Swiss

Wed 1/21

9:50 am-6:10 pm

2 stops17h 20m

$499

PortlandBasel

PDX - BSL

PDXBSL

Portland

Wed 2/11

8:30 am-4:05 pm

2 stops22h 35m

Basel EuroAirport Swiss

Sun 2/15

1:10 pm-10:40 pm

2 stops18h 30m

$499

PortlandBasel

PDX - BSL

PDXBSL

Portland

Wed 2/11

5:45 pm-6:40 pm

1 stop15h 55m

Basel EuroAirport Swiss

Sun 2/15

4:25 pm-3:55 pm

1 stop32h 30m

$585

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 1/7

12:35 pm-7:40 pm

2 stops22h 05m

Basel EuroAirport Swiss

Fri 2/6

9:50 am-1:20 pm

1 stop12h 30m

$589

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Mon 1/5

11:59 pm-7:40 pm

2 stops34h 41m

Basel EuroAirport Swiss

Fri 2/6

9:50 am-1:20 pm

1 stop12h 30m

$589

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 21 results

Best time to book a flight from Washington to Basel

Have a flexible travel schedule? Discover the best time to fly to Basel from Washington with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Basel EuroAirport Swiss

What is the cheapest month to book a flight from State of Washington to Basel EuroAirport Swiss?

Currently, August is the cheapest month in which you can book a flight from State of Washington to Basel EuroAirport Swiss (average of $385). Flying from State of Washington to Basel EuroAirport Swiss in May is currently the most expensive (average of $817). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to BSL?

It’s typically best to fly out from State of Washington to Basel EuroAirport Swiss in the evening. Doing so could potentially save you 43% on the flight price compared to flying in the afternoon, which is usually more expensive.

Related info for your journey

What airport do you fly into for flights to Basel from Washington?
Basel EuroAirport Swiss (BSL) is the airport you will fly into if you book a flight from Washington to Basel. It is only a 3.6 mi journey from EuroAirport Swiss (BSL) to Basel’s city center.
How long is the flight from State of Washington to Basel EuroAirport Swiss?
British Airways and United Airlines can get you from State of Washington to Basel EuroAirport Swiss in just under 19h 30m. Your travel time can differ by up to 10h 55m. The distance from State of Washington to Basel EuroAirport Swiss is about 5207 mi. This flight may include one or multiple stops.
What are the most popular routes from State of Washington to Basel EuroAirport Swiss?
When deciding which route to take from State of Washington to Basel EuroAirport Swiss consider Seattle/Tacoma Intl - Basel EuroAirport Swiss, Portland - Basel EuroAirport Swiss or Pasco Tri Cities - Basel EuroAirport Swiss as they are the most popular.
Can I find deals for flights from Washington to Basel that include hotel bookings?
Yes. In addition to deals on Washington to Basel flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington to Basel?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Basel.
Can I find deals for business class flights from Washington to Basel?
Yes. Cheapflights offers flight deals from Washington to Basel by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from State of Washington to Basel EuroAirport Swiss?
Currently, August is the cheapest month in which you can book a flight from State of Washington to Basel EuroAirport Swiss (average of $385). Flying from State of Washington to Basel EuroAirport Swiss in May is currently the most expensive (average of $817). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Washington to Basel

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$467	Average$694	FlexibilityNo cancel fee	On-time70%
Lufthansa	Cheapest$483	Average$659	FlexibilityNo cancel fee	On-time76%

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$400+ Cheap flights from Washington to Basel EuroAirport Swiss (BSL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/16. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Washington to Basel

Cheapest flights from Washington to BaselExplore the most affordable flight options available from Washington to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Washington to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Find flight deals from Washington to Basel

Keep the following information in mind while searching for Washington to Basel flight deals. Data was last updated December 18, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from Washington to Basel

Have a flexible travel schedule? Discover the best time to fly to Basel from Washington with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington to Basel EuroAirport Swiss

What is the cheapest month to book a flight from State of Washington to Basel EuroAirport Swiss?

What is the cheapest time of day to fly from WA to BSL?

Find hourly flight availability from Washington to Basel. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

Related info for your journey

Find useful and relevant information for your journey from Washington to Basel. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Basel from Washington?

How long is the flight from State of Washington to Basel EuroAirport Swiss?

What are the most popular routes from State of Washington to Basel EuroAirport Swiss?

Can I find deals for flights from Washington to Basel that include hotel bookings?

How can I find direct flights from Washington to Basel?

Can I find deals for business class flights from Washington to Basel?

What is the cheapest month to book a flight from State of Washington to Basel EuroAirport Swiss?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Basel

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Washington to Basel

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Cheapest flights from Washington to Basel
Explore the most affordable flight options available from Washington to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.