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$297+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BSL
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Washington to Basel

Keep the following information in mind while searching for Washington to Basel flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$587
(KLM)

One-way from

$297
(Kiwi.com)

Popular in

June

Cheapest in

March

Average price

$656
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
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One-way flight from Washington to Basel EuroAirport Swiss
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Highest demand for flights based on searches. 29% potential increase in price ($312 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($70 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find 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 February 20, 2025.

This oojo deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/56:30 pmPDX - BSL
1 stop18h 35mBritish Airways
Wed 3/126:15 amBSL - PDX
1 stop19h 20mBritish Airways
Deal found 2/19$562
This American Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/53:43 pmPDX - BSL
2 stops21h 22mAmerican Airlines
Wed 3/126:15 amBSL - PDX
2 stops22h 59mAmerican Airlines
Deal found 2/19$576
This KLM deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/243:15 pmSEA - BSL
1 stop18h 10mKLM
Sun 3/302:25 pmBSL - SEA
1 stop34h 15mKLM
Deal found 2/19$587
This oojo deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/242:07 pmSEA - BSL
2 stops20h 03mBritish Airways
Sun 3/307:10 pmBSL - SEA
2 stops35h 00mBritish Airways
Deal found 2/19$604
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/16:30 amSEA - BSL
2 stops19h 30mMultiple Airlines
Mon 9/157:20 pmBSL - SEA
1 stop24h 50mMultiple Airlines
Deal found 2/20$636
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/238:15 amSEA - BSL
2 stops26h 20mUnited Airlines
Wed 4/309:45 amBSL - SEA
2 stops34h 06mUnited Airlines
Deal found 2/19$655
This Orbitz deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/12:20 pmSEA - BSL
1 stop18h 30mLufthansa
Mon 9/156:30 pmBSL - SEA
1 stop26h 25mLufthansa
Deal found 2/20$663
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/36:10 pmSEA - BSL
1 stop14h 40mDelta
Thu 4/106:15 amBSL - SEA
1 stop18h 45mDelta
Deal found 2/19$680
This Air Canada deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/56:00 amPDX - BSL
2 stops22h 10mMultiple Airlines
Wed 3/127:10 amBSL - PDX
3 stops22h 59mMultiple Airlines
Deal found 2/19$734
This Air Canada deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:00 amPDX - BSL
2 stops22h 10mAir Canada
Thu 3/132:10 pmBSL - PDX
3 stops27h 24mAir Canada
Deal found 2/20$790
This Aeromexico deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2612:35 pmSEA - BSL
1 stop16h 30mAir France
Mon 3/32:45 pmBSL - SEA
2 stops53h 52mAir France
Deal found 2/19$868
This KLM deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/67:05 amPDX - BSL
2 stops18h 35mKLM
Thu 3/135:55 pmBSL - PDX
1 stop26h 30mKLM
Deal found 2/20$887

Find flights from Washington to Basel within your budget

Customize your flight search to find flights from Washington to Basel that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Washington

Fly to

Basel

Route

Depart

Return

Price

PortlandBasel

PDX - BSL

PDXBSL

Portland

Wed 3/5

6:30 pm-10:05 pm

1 stop18h 35m

Basel EuroAirport Swiss

Wed 3/12

6:15 am-5:35 pm

1 stop19h 20m

$562

PortlandBasel

PDX - BSL

PDXBSL

Portland

Wed 3/5

3:43 pm-10:05 pm

2 stops21h 22m

Basel EuroAirport Swiss

Wed 3/12

6:15 am-9:14 pm

2 stops22h 59m

$576

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Mon 3/24

3:15 pm-5:25 pm

1 stop18h 10m

Basel EuroAirport Swiss

Sun 3/30

2:25 pm-3:40 pm

1 stop34h 15m

$587

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Mon 3/24

2:07 pm-6:10 pm

2 stops20h 03m

Basel EuroAirport Swiss

Sun 3/30

7:10 pm-9:10 pm

2 stops35h 00m

$604

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Wed 4/23

8:15 am-7:35 pm

2 stops26h 20m

Basel EuroAirport Swiss

Wed 4/30

9:45 am-10:51 am

2 stops34h 06m

$655

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Thu 4/3

6:10 pm-5:50 pm

1 stop14h 40m

Basel EuroAirport Swiss

Thu 4/10

6:15 am-4:00 pm

1 stop18h 45m

$680

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sun 4/6

10:30 am-1:40 pm

2 stops18h 10m

Basel EuroAirport Swiss

Sun 4/13

6:30 pm-12:25 pm

1 stop26h 55m

$712

PortlandBasel

PDX - BSL

PDXBSL

Portland

Wed 3/5

6:00 am-1:10 pm

2 stops22h 10m

Basel EuroAirport Swiss

Wed 3/12

7:10 am-10:09 pm

3 stops22h 59m

$734

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Thu 3/13

3:00 pm-9:20 pm

1 stop22h 20m

Basel EuroAirport Swiss

Mon 4/14

6:30 pm-12:25 pm

1 stop26h 55m

$738

PortlandBasel

PDX - BSL

PDXBSL

Portland

Thu 3/6

6:00 am-1:10 pm

2 stops22h 10m

Basel EuroAirport Swiss

Thu 3/13

2:10 pm-9:34 am

3 stops27h 24m

$790

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 21 results
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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.

Travel insights for flights from Washington to Basel

Get recent, data-driven insights about flights from Washington to Basel including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to Basel EuroAirport Swiss (average of $545). Flying from State of Washington to Basel EuroAirport Swiss in June is currently the most expensive (average of $1,132). 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?

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 February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Basel EuroAirport Swiss as you normally would.

Rainfall in Basel by month

Plan your trip to Basel by taking into account the average rainfall totals by month.

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.

Temperature in Basel by month

Plan your trip to Basel by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Basel

Get insights into the airlines that provide service to Basel. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Basel. Reviews last updated February 20, 2025.
Get a feel of what it's like to fly with Delta, KLM and Austrian Airlines from Washington to Basel by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines
7.6
Good
773 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,449 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,765 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    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.

  • What are the cheapest airlines to fly from State of Washington to Basel EuroAirport Swiss one-way?

    To fly one-way, consider booking your trip with Lufthansa, which is currently one of the cheapest options available, starting at $449. United Airlines flights start at $467 while deals on KLM start at $512 one-way.

  • 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, January is the cheapest month in which you can book a flight from State of Washington to Basel EuroAirport Swiss (average of $545). Flying from State of Washington to Basel EuroAirport Swiss in June is currently the most expensive (average of $1,132). 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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Alternative routes for Washington to Basel

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Washington to Basel

Discover the top 2 airlines that operate flights from Washington to Basel. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$443Average$624FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$502Average$769FlexibilityNo cancel feeOn-time77%
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