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Cheap flights from Basel EuroAirport Swiss to Washington from $345

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 5/27. 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 pm
BSL
-
SEA
19h 50m1 stop
American Airlines Logo
7:15 am - 6:15 pm
SEA
-
BSL
26h 00m2 stops
$527American Airlines
Thu, Feb 19 - Mon, Mar 2
British Airways Logo
11:05 am - 11:30 am
BSL
-
SEA
33h 25m1 stop
British Airways Logo
2:04 pm - 6:15 pm
SEA
-
BSL
19h 11m2 stops
$529British Airways
Thu, Jan 22 - Mon, Jan 26
American Airlines Logo
6:05 am - 7:04 pm
BSL
-
SEA
21h 59m2 stops
American Airlines Logo
12:45 pm - 6:15 pm
SEA
-
BSL
20h 30m2 stops
$532American Airlines
Thu, Jan 22 - Mon, Jan 26
American Airlines Logo
6:05 am - 11:29 pm
BSL
-
SEA
26h 24m2 stops
American Airlines Logo
1:49 pm - 6:15 pm
SEA
-
BSL
19h 26m2 stops
$533American Airlines
Thu, Feb 19 - Mon, Mar 2
United Airlines Logo
9:50 am - 1:20 pm
BSL
-
SEA
12h 30m1 stop
United Airlines Logo
10:55 am - 12:30 pm
SEA
-
BSL
16h 35m2 stops
$741United Airlines
Fri, Jan 9 - Tue, Mar 3
Lufthansa Logo
9:50 am - 1:20 pm
BSL
-
SEA
12h 30m1 stop
Lufthansa Logo
3:10 pm - 4:05 pm
SEA
-
BSL
15h 55m1 stop
$760Lufthansa
Fri, Jan 9 - Wed, Mar 4
Lufthansa Logo
9:50 am - 1:20 pm
BSL
-
SEA
12h 30m1 stop
Lufthansa Logo
2:00 pm - 1:15 pm
SEA
-
BSL
14h 15m1 stop
$767Lufthansa
Fri, Jan 9 - Mon, Mar 2
United Airlines Logo
9:50 am - 6:56 pm
BSL
-
PDX
18h 06m2 stops
United Airlines Logo
10:56 am - 12:30 pm
PDX
-
BSL
16h 34m2 stops
$1,284United Airlines
Fri, Jan 9 - Tue, Mar 3
Multiple Airlines Logo
11:15 am - 3:55 pm
BSL
-
PDX
13h 40m1 stop
Multiple Airlines Logo
1:18 pm - 1:35 pm
PDX
-
BSL
15h 17m2 stops
$7,630Multiple Airlines
Fri, Jan 9 - Tue, Mar 3
Multiple Airlines Logo
9:50 am - 1:20 pm
BSL
-
SEA
12h 30m1 stop
Multiple Airlines Logo
1:39 pm - 3:05 pm
SEA
-
BSL
16h 26m2 stops
$21,550Multiple Airlines
Sun, Feb 22 - Thu, Mar 5

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
Jan 22
BSL11:05 amBasel EuroAirport Swiss
33h 25m
1 stop
SEA11:30 amSeattle/Tacoma Intl
Jan 26
SEA2:04 pmSeattle/Tacoma Intl
19h 11m
2 stops
BSL6:15 pmBasel EuroAirport Swiss
$529
Find similar
British Airways
Dec 26
BSL7:00 amBasel EuroAirport Swiss
17h 55m
1 stop
PDX3:55 pmPortland
Jan 12
PDX5:45 pmPortland
31h 30m
1 stop
BSL10:15 amBasel EuroAirport Swiss
$1,135
Find similar
British Airways
Jan 9
BSL11:15 amBasel EuroAirport Swiss
16h 28m
2 stops
SEA6:43 pmSeattle/Tacoma Intl
Mar 3
SEA1:44 pmSeattle/Tacoma Intl
16h 21m
2 stops
BSL3:05 pmBasel EuroAirport Swiss
$1,220
Find similar

United Airlines flights from Basel EuroAirport Swiss to State of Washington

Our best United Airlines deals on Basel EuroAirport Swiss to State of Washington flight tickets
United Airlines
Jan 9
BSL9:50 amBasel EuroAirport Swiss
12h 30m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
Mar 3
SEA10:55 amSeattle/Tacoma Intl
16h 35m
2 stops
BSL12:30 pmBasel EuroAirport Swiss
$741
Find similar
United Airlines
Dec 29
BSL9:50 amBasel EuroAirport Swiss
36h 30m
2 stops
PDX1:20 pmPortland
Jan 12
PDX1:24 pmPortland
17h 41m
3 stops
BSL4:05 pmBasel EuroAirport Swiss
$1,097
Find similar
United Airlines
Jan 9
BSL9:50 amBasel EuroAirport Swiss
18h 06m
2 stops
PDX6:56 pmPortland
Mar 3
PDX10:56 amPortland
16h 34m
2 stops
BSL12:30 pmBasel EuroAirport Swiss
$1,284
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 December 25, 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

7:15 am-6:15 pm

2 stops26h 00m

$527

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 1/22

11:05 am-11:30 am

1 stop33h 25m

Seattle/Tacoma Intl

Mon 1/26

2:04 pm-6:15 pm

2 stops19h 11m

$529

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 1/22

6:05 am-7:04 pm

2 stops21h 59m

Seattle/Tacoma Intl

Mon 1/26

12:45 pm-6:15 pm

2 stops20h 30m

$532

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Thu 2/19

6:05 am-11:29 pm

2 stops26h 24m

Seattle/Tacoma Intl

Mon 3/2

1:49 pm-6:15 pm

2 stops19h 26m

$533

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Fri 1/9

9:50 am-1:20 pm

1 stop12h 30m

Seattle/Tacoma Intl

Tue 3/3

10:55 am-12:30 pm

2 stops16h 35m

$741

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Fri 1/9

9:50 am-1:20 pm

1 stop12h 30m

Seattle/Tacoma Intl

Wed 3/4

3:10 pm-4:05 pm

1 stop15h 55m

$760

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Fri 1/9

9:50 am-1:20 pm

1 stop12h 30m

Seattle/Tacoma Intl

Mon 3/2

2:00 pm-1:15 pm

1 stop14h 15m

$767

BaselPortland

BSL - PDX

BSLPDX

Basel EuroAirport Swiss

Fri 1/9

9:50 am-6:56 pm

2 stops18h 06m

Portland

Tue 3/3

10:56 am-12:30 pm

2 stops16h 34m

$1,284

BaselPortland

BSL - PDX

BSLPDX

Basel EuroAirport Swiss

Fri 1/9

11:15 am-3:55 pm

1 stop13h 40m

Portland

Tue 3/3

1:18 pm-1:35 pm

2 stops15h 17m

$7,630

BaselSeattle

BSL - SEA

BSLSEA

Basel EuroAirport Swiss

Sun 2/22

9:50 am-1:20 pm

1 stop12h 30m

Seattle/Tacoma Intl

Thu 3/5

1:39 pm-3:05 pm

2 stops16h 26m

$21,550

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 46% 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

Fastest flight time

12h 30m

Direct flights

None
The fastest flight from Basel EuroAirport Swiss to State of Washington takes 12h 30m
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.
Search flight deals

  • 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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