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$566+ Cheap flights from Basel EuroAirport Swiss (BSL) to Washington

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — SEA
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Basel to Washington

Keep the following information in mind while searching for Basel to Washington flight deals. Data was last updated October 30, 2025.

Round-trip from

$566
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$632
From Basel EuroAirport Swiss to Washington
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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Find flight deals from Basel to Washington

Cheapest flights from Basel to Washington
Explore the most affordable flight options available from Basel to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/29. 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.
Thu 11/136:05 amBSL - SEA
2 stops22h 39mAmerican Airlines
Tue 11/189:00 amSEA - BSL
2 stops21h 05mAmerican Airlines
Deal found 10/29$596
This Delta deal was found by Cheapflights users on 10/29. 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 11/136:05 amBSL - SEA
1 stop14h 40mDelta
Tue 11/181:40 pmSEA - BSL
1 stop15h 10mDelta
Deal found 10/29$606
This Flightnetwork deal was found by Cheapflights users on 10/29. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:35 amBSL - SEA
2 stops20h 41mMultiple Airlines
Tue 11/1810:05 amSEA - BSL
2 stops17h 25mMultiple Airlines
Deal found 10/29$653
This Lufthansa deal was found by Cheapflights users on 10/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:50 amBSL - SEA
1 stop12h 30mLufthansa
Fri 1/93:10 pmSEA - BSL
1 stop15h 55mLufthansa
Deal found 10/30$658
This United Airlines deal was found by Cheapflights users on 10/30. 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 12/171:10 pmBSL - SEA
2 stops20h 40mUnited Airlines
Fri 1/97:30 pmSEA - BSL
3 stops39h 10mUnited Airlines
Deal found 10/30$659
This Lufthansa deal was found by Cheapflights users on 10/29. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/138:15 pmBSL - SEA
1 stop26h 05mLufthansa
Tue 11/182:00 pmSEA - BSL
1 stop14h 35mLufthansa
Deal found 10/29$673
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:05 amBSL - SEA
1 stop14h 45mAir France
Fri 1/97:10 amSEA - BSL
2 stops18h 05mAir France
Deal found 10/30$679
This United Airlines deal was found by Cheapflights users on 10/30. 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 12/171:10 pmBSL - SEA
2 stops20h 40mUnited Airlines
Sat 12/2711:15 pmSEA - BSL
2 stops28h 15mUnited Airlines
Deal found 10/30$712
This KLM deal was found by Cheapflights users on 10/30. 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 12/186:05 amBSL - SEA
2 stops19h 16mKLM
Fri 1/97:10 amSEA - BSL
2 stops18h 30mKLM
Deal found 10/30$713
This Lufthansa deal was found by Cheapflights users on 10/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:50 amBSL - SEA
1 stop12h 30mLufthansa
Sat 12/277:00 amSEA - BSL
2 stops18h 05mLufthansa
Deal found 10/30$718
This Bravofly deal was found by Cheapflights users on 10/30. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/199:50 amBSL - PDX
2 stops17h 40mMultiple Airlines
Sun 1/49:50 amPDX - BSL
2 stops17h 40mMultiple Airlines
Deal found 10/30$2,023
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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.
Fri 10/312:20 pmBSL - PDX
2 stops18h 06mMultiple Airlines
Sat 11/17:38 pmPDX - BSL
2 stops16h 02mMultiple Airlines
Deal found 10/28$2,916

Cheapflights Fare Finder

 
Customize your flight search to find flights from Basel to Washington 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 October 30, 2025.
Use the filters below to find and compare flights from Basel EuroAirport Swiss to Washington that are best for you.

Fly from

Basel

Fly to

Washington

Route

Depart

Return

Price

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 2/19

6:05 am-4:55 pm

1 stop19h 50m

Seattle/Tacoma Intl

Mon 3/2

6:00 am-6:15 pm

2 stops27h 15m

$566

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 2/19

6:05 am-4:55 pm

1 stop19h 50m

Seattle/Tacoma Intl

Mon 3/2

6:50 pm-6:15 pm

1 stop14h 25m

$567

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 11/13

6:05 am-11:18 pm

2 stops26h 13m

Seattle/Tacoma Intl

Tue 11/18

6:50 pm-10:20 pm

1 stop18h 30m

$596

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 11/13

6:05 am-11:45 am

1 stop14h 40m

Seattle/Tacoma Intl

Tue 11/18

1:40 pm-1:50 pm

1 stop15h 10m

$606

BaselPortland

BSL - PDX

BSLPDX

Basel EuroAirport Swiss

Wed 4/1

6:40 am-5:40 pm

1 stop20h 00m

Portland

Sun 4/5

7:30 pm-10:50 pm

1 stop18h 20m

$677

BaselPortland

BSL - PDX

BSLPDX

Basel EuroAirport Swiss

Wed 4/1

6:15 am-4:31 pm

2 stops19h 16m

Portland

Sun 4/5

11:10 am-1:45 pm

2 stops17h 35m

$770

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 12/28

6:00 am-6:20 pm

2 stops45h 20m

$635

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sat 12/27

7:10 am-11:30 am

1 stop13h 20m

$705

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 12/28

6:05 am-11:50 am

1 stop14h 45m

$894

BaselPortland

BSL - PDX

BSLPDX

Basel EuroAirport Swiss

Sat 12/27

7:10 am-2:14 pm

2 stops16h 04m

$1,479

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 13 results
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Best time to book a flight from Basel to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Basel 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 Basel EuroAirport Swiss to Washington
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Basel to Washington. 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 from for flights from Basel to Washington?

    For a flight from Basel to Washington, you will be flying from EuroAirport Swiss. Basel EuroAirport Swiss (BSL) is just 3.6 mi from the center of the city.

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

    There are many flights that can get you from Basel EuroAirport Swiss to State of Washington in 19h 50m. Fly via American Airlines or British Airways to get the fastest option. Airlines will cover a distance of 5207 mi.

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

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

  • How can I find direct flights from Basel to Washington?

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

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

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

See more FAQs

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