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$372+ Cheap flights from Basel EuroAirport Swiss (BSL) to Washington

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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — SEA
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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Cheap 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 February 5, 2026.

This KLM deal was found by Cheapflights users on 2/4. 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 2/196:05 am
BSL
-
SEA
1 stop14h 35m
Multiple Airlines
Mon 3/22:10 pm
SEA
-
BSL
1 stop14h 40m
Multiple Airlines
Deal found 2/4$597
This Delta deal was found by Cheapflights users on 2/3. 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 2/196:05 am
BSL
-
SEA
1 stop14h 35m
Delta
Mon 3/22:10 pm
SEA
-
BSL
1 stop14h 40m
Delta
Deal found 2/3$598
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:00 am
BSL
-
SEA
1 stop21h 25m
American Airlines
Tue 9/18:20 pm
SEA
-
BSL
1 stop29h 55m
American Airlines
Deal found 2/2$628
This Billigflug deal was found by Cheapflights users on 2/2. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:00 am
BSL
-
SEA
1 stop14h 35m
Multiple Airlines
Fri 10/233:10 pm
SEA
-
BSL
2 stops22h 40m
Multiple Airlines
Deal found 2/2$629
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:40 am
BSL
-
SEA
1 stop20h 45m
American Airlines
Fri 9/256:24 am
SEA
-
BSL
2 stops31h 26m
American Airlines
Deal found 2/2$630
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:40 am
BSL
-
SEA
2 stops22h 22m
American Airlines
Mon 9/213:12 pm
SEA
-
BSL
2 stops18h 08m
American Airlines
Deal found 2/2$635
This Delta deal was found by Cheapflights users on 2/3. 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.
Fri 2/136:05 am
BSL
-
PDX
1 stop14h 20m
Delta
Wed 2/187:00 am
PDX
-
BSL
2 stops17h 50m
Delta
Deal found 2/3$714
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/236:05 am
BSL
-
PDX
1 stop14h 20m
Delta
Sun 4/1210:58 am
PDX
-
BSL
2 stops17h 47m
Delta
Deal found 2/2$717
This Expedia deal was found by Cheapflights users on 2/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/236:05 am
BSL
-
PDX
1 stop14h 20m
Air France
Sun 4/121:05 pm
PDX
-
BSL
1 stop15h 50m
Air France
Deal found 2/2$721
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/126:05 am
BSL
-
PDX
2 stops25h 03m
Delta
Wed 2/187:00 am
PDX
-
BSL
2 stops17h 50m
Delta
Deal found 2/2$722
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:05 am
BSL
-
PDX
2 stops32h 49m
American Airlines
Sun 11/15:45 pm
PDX
-
BSL
1 stop19h 35m
American Airlines
Deal found 2/2$749
This Iberia deal was found by Cheapflights users on 2/3. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:00 am
BSL
-
PDX
2 stops23h 47m
Multiple Airlines
Fri 10/232:12 pm
PDX
-
BSL
2 stops23h 38m
Multiple Airlines
Deal found 2/3$753

Find flight deals from Basel to Washington

Keep the following information in mind while searching for Basel to Washington flight deals. Data was last updated February 5, 2026.

Round-trip from

$597
(KLM)

One-way from

$372
(Iberia)

Popular in

December

Cheapest in

April

Average price

$609
From Basel EuroAirport Swiss to Washington
Search Deals
One-way flight from Basel EuroAirport Swiss to Washington
Search Deals
Highest demand for flights based on searches. 32% potential increase in price ($340 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 5, 2026.
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-11:40 am

1 stop14h 35m

Seattle/Tacoma Intl

Mon 3/2

2:10 pm-1:50 pm

1 stop14h 40m

$597

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 2/19

6:05 am-11:40 am

1 stop14h 35m

Seattle/Tacoma Intl

Mon 3/2

2:10 pm-1:50 pm

1 stop14h 40m

$597

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 2/19

6:05 am-11:40 am

1 stop14h 35m

Seattle/Tacoma Intl

Mon 3/2

8:00 am-1:50 pm

2 stops20h 50m

$598

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 2/19

11:05 am-11:04 pm

2 stops20h 59m

Seattle/Tacoma Intl

Mon 3/2

1:44 pm-6:15 pm

2 stops19h 31m

$633

BaselPortland

BSL - PDX

BSLPDX

Basel EuroAirport Swiss

Mon 3/23

6:05 am-12:25 pm

1 stop14h 20m

Portland

Sun 4/12

10:58 am-1:45 pm

2 stops17h 47m

$717

BaselPortland

BSL - PDX

BSLPDX

Basel EuroAirport Swiss

Mon 3/23

6:05 am-12:25 pm

1 stop14h 20m

Portland

Sun 4/12

1:05 pm-1:55 pm

1 stop15h 50m

$721

BaselPortland

BSL - PDX

BSLPDX

Basel EuroAirport Swiss

Sun 3/22

11:15 am-12:25 pm

1 stop33h 10m

Portland

Sun 3/29

1:05 pm-1:55 pm

1 stop15h 50m

$791

BaselPortland

BSL - PDX

BSLPDX

Basel EuroAirport Swiss

Sun 3/22

11:15 am-12:25 pm

1 stop33h 10m

Portland

Sun 3/29

1:49 pm-5:55 pm

2 stops19h 06m

$839

BaselPortland

BSL - PDX

BSLPDX

Basel EuroAirport Swiss

Mon 3/23

6:05 am-6:00 pm

3 stops19h 55m

Portland

Sun 4/12

7:05 pm-7:40 pm

2 stops39h 35m

$1,088

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Tue 3/31

8:15 am-11:04 pm

2 stops23h 49m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 29 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 14h 35m. Fly via Air France, Delta, or KLM to get the fastest option. Airlines will cover a distance of 5207 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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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