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Basel

$367+ Cheap flights from Washington to Basel (EAP)

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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — EAP
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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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 November 3, 2025.

This Delta deal was found by Cheapflights users on 11/1. 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.
Sun 11/97:30 amSEA - BSL
2 stops17h 20mDelta
Mon 11/1711:15 amBSL - SEA
1 stop33h 30mDelta
Deal found 11/1$466
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Sat 11/295:05 amSEA - BSL
2 stops29h 35mUnited Airlines
Sat 12/69:50 amBSL - SEA
2 stops24h 00mUnited Airlines
Deal found 10/31$496
This Air France deal was found by Cheapflights users on 11/1. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/163:05 pmSEA - BSL
1 stop17h 20mAir France
Tue 12/2311:15 amBSL - SEA
1 stop33h 35mAir France
Deal found 11/1$514
This Delta deal was found by Cheapflights users on 11/1. 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.
Sat 11/810:05 pmSEA - BSL
2 stops26h 45mDelta
Mon 11/176:05 amBSL - SEA
2 stops23h 01mDelta
Deal found 11/1$522
This Cheapflightsfares deal was found by Cheapflights users on 11/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/93:10 pmSEA - BSL
1 stop12h 20mLufthansa
Sun 11/169:50 amBSL - SEA
1 stop12h 30mLufthansa
Deal found 11/1$621
This Air France deal was found by Cheapflights users on 11/2. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/253:00 pmSEA - BSL
1 stop34h 40mAir France
Sun 11/3011:15 amBSL - SEA
1 stop33h 35mAir France
Deal found 11/2$624
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Mon 12/810:40 amSEA - BSL
2 stops20h 25mUnited Airlines
Fri 12/261:10 pmBSL - SEA
2 stops18h 27mUnited Airlines
Deal found 11/2$626
This United deal was found by Cheapflights users on 11/1. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/912:00 pmSEA - BSL
2 stops22h 40mMultiple Airlines
Sun 11/169:50 amBSL - SEA
1 stop12h 30mMultiple Airlines
Deal found 11/1$638
This American Airlines deal was found by Cheapflights users on 11/1. 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 11/1012:42 pmSEA - BSL
2 stops20h 33mAmerican Airlines
Mon 11/1710:55 amBSL - SEA
2 stops44h 25mAmerican Airlines
Deal found 11/1$639
This Air France deal was found by Cheapflights users on 11/1. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:05 amPDX - BSL
2 stops18h 35mAir France
Tue 12/2311:15 amBSL - PDX
1 stop33h 10mAir France
Deal found 11/1$716
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Tue 12/166:00 amPDX - BSL
2 stops42h 10mUnited Airlines
Tue 12/239:50 amBSL - PDX
2 stops33h 11mUnited Airlines
Deal found 11/1$922
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/175:04 amPSC - BSL
2 stops29h 36mUnited Airlines
Wed 12/249:50 amBSL - PSC
2 stops20h 13mUnited Airlines
Deal found 11/2$1,066

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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$437
(Expedia)

One-way from

$367
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$588
Provider with most accurate pricing for Seattle/Tacoma Intl-Basel (EAP) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Basel (EAP) flights.
Search Deals
From Washington to Basel (EAP)
Search Deals
One-way flight from Washington to Basel (EAP)
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($99 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 November 2025
Search Deals

Cheapflights Fare Finder

 
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 November 3, 2025.
Use the filters below to find and compare flights from Washington to Basel that are best for you.

Fly from

Washington

Fly to

Basel

Route

Depart

Return

Price

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sun 2/8

8:40 am-12:30 pm

3 stops18h 50m

Basel EuroAirport Swiss

Wed 2/18

9:50 am-10:16 pm

2 stops21h 26m

$494

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Sat 11/29

5:05 am-7:40 pm

2 stops29h 35m

Basel EuroAirport Swiss

Sat 12/6

9:50 am-12:50 am

2 stops24h 00m

$496

PortlandBasel

PDX - BSL

PDXBSL

Portland

Fri 3/6

7:11 am-10:05 am

2 stops17h 54m

Basel EuroAirport Swiss

Tue 3/10

10:35 am-8:49 pm

2 stops18h 14m

$559

PortlandBasel

PDX - BSL

PDXBSL

Portland

Fri 3/6

5:45 pm-9:30 pm

1 stop18h 45m

Basel EuroAirport Swiss

Tue 3/10

7:05 pm-4:55 pm

1 stop29h 50m

$562

PortlandBasel

PDX - BSL

PDXBSL

Portland

Fri 3/6

4:05 pm-4:05 pm

2 stops15h 00m

Basel EuroAirport Swiss

Tue 3/10

9:50 am-10:57 pm

2 stops21h 07m

$597

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Tue 12/16

9:25 am-10:40 am

2 stops16h 15m

Basel EuroAirport Swiss

Tue 12/23

11:15 am-10:25 pm

2 stops20h 10m

$612

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Mon 12/8

3:45 pm-7:40 pm

2 stops18h 55m

Basel EuroAirport Swiss

Fri 12/26

1:10 pm-10:37 pm

2 stops18h 27m

$626

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Tue 11/25

9:28 am-10:40 am

2 stops16h 12m

Basel EuroAirport Swiss

Sun 11/30

11:15 am-11:50 am

1 stop33h 35m

$629

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Fri 3/27

10:05 am-4:05 pm

2 stops22h 00m

Basel EuroAirport Swiss

Tue 3/31

11:00 am-3:03 pm

2 stops37h 03m

$631

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

Fri 3/27

4:10 pm-7:40 pm

1 stop19h 30m

Basel EuroAirport Swiss

Tue 3/31

8:20 am-12:20 pm

1 stop13h 00m

$631

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 32 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.

Cheapflights Insights

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

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

Currently, August is the cheapest month in which you can book a flight from State of Washington to Basel (average of $385). Flying from State of Washington to Basel 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 EAP?

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 November 3, 2025.

One of the essential ways to save on airfare from State of Washington to Basel is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 35% on airfare.

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 All airports (EAP) is the airport you will fly into if you book a flight from Washington to Basel. It is only a 0.2 mi journey from All airports (EAP) to Basel’s city center.

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

    Departing from State of Washington to Basel will take you 17h 54m. Airlines will cover a distance of 5323 mi. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as $415 on Air France. Other airlines that offer cheap prices include United Airlines from $416 and Lufthansa from $591 one-way.

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

    While some choose either Portland - Basel EuroAirport Swiss or Pasco Tri Cities - Basel EuroAirport Swiss, Seattle/Tacoma Intl - Basel EuroAirport Swiss is the most popular route from State of Washington to Basel.

  • 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?

    Currently, August is the cheapest month in which you can book a flight from State of Washington to Basel (average of $385). Flying from State of Washington to Basel 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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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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$481Average$694FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$497Average$723FlexibilityNo cancel feeOn-time76%

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