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Cheap flights from Basel EuroAirport Swiss to Washington from $421

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Basel EuroAirport Swiss to Washington departing on 3/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Basel EuroAirport Swiss to Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:05 am - 4:55 pmBSL-SEA
19h 50m1 stop
American Airlines Logo
1:39 pm - 6:15 pmSEA-BSL
19h 36m2 stops
$584American Airlines
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Thu, Feb 19 - Mon, Mar 2
British Airways Logo
11:05 am - 4:55 pmBSL-SEA
14h 50m1 stop
British Airways Logo
6:50 pm - 6:15 pmSEA-BSL
14h 25m1 stop
$586British Airways
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Thu, Feb 19 - Mon, Mar 2
American Airlines Logo
11:05 am - 11:32 pmBSL-SEA
21h 27m2 stops
American Airlines Logo
1:39 pm - 6:15 pmSEA-BSL
19h 36m2 stops
$589American Airlines
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Thu, Feb 19 - Mon, Mar 2
Delta Logo
6:05 am - 11:45 amBSL-SEA
14h 40m1 stop
Delta Logo
1:40 pm - 1:50 pmSEA-BSL
15h 10m1 stop
$600Delta
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Sun, Nov 23 - Tue, Dec 2
Delta Logo
6:05 am - 4:55 pmBSL-SEA
19h 50m2 stops
Delta Logo
1:40 pm - 1:50 pmSEA-BSL
15h 10m1 stop
$605Delta
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Sun, Nov 23 - Tue, Dec 2
Lufthansa Logo
6:50 am - 12:10 pmBSL-SEA
14h 20m1 stop
Lufthansa Logo
7:00 am - 9:55 amSEA-BSL
17h 55m2 stops
$615Lufthansa
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Tue, Dec 16 - Thu, Jan 8
Air France Logo
11:15 am - 11:50 amBSL-SEA
33h 35m1 stop
Air France Logo
1:40 pm - 1:50 pmSEA-BSL
15h 10m1 stop
$623Air France
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Tue, Dec 16 - Thu, Jan 8
Lufthansa Logo
10:35 am - 10:28 pmBSL-SEA
20h 53m2 stops
Lufthansa Logo
7:00 am - 12:30 pmSEA-BSL
20h 30m2 stops
$637Lufthansa
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Tue, Dec 16 - Thu, Jan 8
United Airlines Logo
9:50 am - 11:15 pmBSL-SEA
22h 25m3 stops
United Airlines Logo
7:30 pm - 7:40 pmSEA-BSL
39h 10m3 stops
$655United Airlines
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Tue, Dec 16 - Wed, Jan 7
United Airlines Logo
9:50 am - 1:20 pmBSL-SEA
12h 30m1 stop
United Airlines Logo
2:00 pm - 7:40 pmSEA-BSL
20h 40m2 stops
$680United Airlines
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Wed, Dec 17 - Tue, Jan 6

American Airlines flights from Basel EuroAirport Swiss to State of Washington

Our best American Airlines deals on Basel EuroAirport Swiss to State of Washington flight tickets
American Airlines
Feb 19
BSL6:05 amBasel EuroAirport Swiss
19h 50m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
Mar 2
SEA1:39 pmSeattle/Tacoma Intl
19h 36m
2 stops
BSL6:15 pmBasel EuroAirport Swiss
$584
Find similar
American Airlines
Feb 19
BSL11:05 amBasel EuroAirport Swiss
21h 27m
2 stops
SEA11:32 pmSeattle/Tacoma Intl
Mar 2
SEA1:39 pmSeattle/Tacoma Intl
19h 36m
2 stops
BSL6:15 pmBasel EuroAirport Swiss
$589
Find similar
American Airlines
Dec 15
BSL6:15 amBasel EuroAirport Swiss
26h 10m
2 stops
SEA11:25 pmSeattle/Tacoma Intl
Jan 10
SEA1:35 pmSeattle/Tacoma Intl
23h 15m
1 stop
BSL9:50 pmBasel EuroAirport Swiss
$590
Find similar

British Airways flights from Basel EuroAirport Swiss to State of Washington

Our best British Airways deals on Basel EuroAirport Swiss to State of Washington flight tickets
British Airways
Feb 19
BSL11:05 amBasel EuroAirport Swiss
14h 50m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
Mar 2
SEA6:50 pmSeattle/Tacoma Intl
14h 25m
1 stop
BSL6:15 pmBasel EuroAirport Swiss
$586
Find similar
British Airways
Apr 1
BSL6:40 amBasel EuroAirport Swiss
20h 00m
1 stop
PDX5:40 pmPortland
Apr 5
PDX7:30 pmPortland
18h 20m
1 stop
BSL10:50 pmBasel EuroAirport Swiss
$751
Find similar
British Airways
Apr 1
BSL6:40 amBasel EuroAirport Swiss
20h 00m
1 stop
PDX5:40 pmPortland
Apr 5
PDX7:30 pmPortland
18h 20m
1 stop
BSL10:50 pmBasel EuroAirport Swiss
$753
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Basel EuroAirport Swiss to State of 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, momondo users made 832,500 searches. Data last updated November 10, 2025.
Use the filters below to find and compare flights from Basel EuroAirport Swiss to Washington that are best for you.

Fly from

Fly to

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

1:39 pm-6:15 pm

2 stops19h 36m

$584

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 2/19

11:05 am-4:55 pm

1 stop14h 50m

Seattle/Tacoma Intl

Mon 3/2

6:50 pm-6:15 pm

1 stop14h 25m

$586

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 2/19

11:05 am-11:32 pm

2 stops21h 27m

Seattle/Tacoma Intl

Mon 3/2

1:39 pm-6:15 pm

2 stops19h 36m

$589

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 11/23

6:05 am-11:45 am

1 stop14h 40m

Seattle/Tacoma Intl

Tue 12/2

1:40 pm-1:50 pm

1 stop15h 10m

$600

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 11/23

6:05 am-4:55 pm

2 stops19h 50m

Seattle/Tacoma Intl

Tue 12/2

1:40 pm-1:50 pm

1 stop15h 10m

$605

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Tue 12/16

6:50 am-12:10 pm

1 stop14h 20m

Seattle/Tacoma Intl

Thu 1/8

7:00 am-9:55 am

2 stops17h 55m

$615

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Tue 12/16

11:15 am-11:50 am

1 stop33h 35m

Seattle/Tacoma Intl

Thu 1/8

1:40 pm-1:50 pm

1 stop15h 10m

$623

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Tue 12/16

10:35 am-10:28 pm

2 stops20h 53m

Seattle/Tacoma Intl

Thu 1/8

7:00 am-12:30 pm

2 stops20h 30m

$637

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Tue 12/16

9:50 am-11:15 pm

3 stops22h 25m

Seattle/Tacoma Intl

Wed 1/7

7:30 pm-7:40 pm

3 stops39h 10m

$655

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Wed 12/17

9:50 am-1:20 pm

1 stop12h 30m

Seattle/Tacoma Intl

Tue 1/6

2:00 pm-7:40 pm

2 stops20h 40m

$680

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from Basel EuroAirport Swiss to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Basel EuroAirport Swiss to State of Washington flights?

You could potentially save up to 61% on your flight if you consider stops on a Basel EuroAirport Swiss to State of Washington flight.

Cheap Basel EuroAirport Swiss to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Basel EuroAirport Swiss to State of Washington

Direct flights

None
There are no direct flights from Basel EuroAirport Swiss to State of Washington. There are no popular flight routes from Basel EuroAirport Swiss to State of Washington.
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  • When did momondo last update prices for flights from Basel EuroAirport Swiss to Washington?

    Prices for flights from Basel EuroAirport Swiss to Washington refresh daily.

  • How old do you have to be to fly from Basel EuroAirport Swiss to Washington?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Basel EuroAirport Swiss to Washington.

  • What documentation or ID do you need to fly to Washington?

    The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Basel to Washington?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Basel to Washington for you.

Can I find flights from Basel to Washington with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington from Basel which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Basel to Washington?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Basel to Washington.

I’m not ready to book a flight from Basel to Washington right now. Can momondo alert me if prices change?

Price alerts on flights to Washington from Basel are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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