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Cheap flights from Seattle to Basel from $276

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Basel departing on 2/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Basel

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:10 am - 12:30 pm
SEA
-
BSL
19h 20m2 stops
Multiple Airlines Logo
9:50 am - 7:16 pm
BSL
-
SEA
18h 26m2 stops
$469Multiple Airlines
jue., feb. 5 - mar., feb. 10
Lufthansa Logo
7:00 am - 12:30 pm
SEA
-
BSL
20h 30m2 stops
Lufthansa Logo
6:50 am - 8:57 pm
BSL
-
SEA
23h 07m2 stops
$480Lufthansa
mar., feb. 3 - mar., feb. 10
Multiple Airlines Logo
2:15 pm - 9:50 am
SEA
-
BSL
34h 35m1 stop
Multiple Airlines Logo
11:15 am - 11:40 am
BSL
-
SEA
33h 25m1 stop
$482Multiple Airlines
dom., feb. 8 - mié., feb. 18
British Airways Logo
8:04 am - 3:05 pm
SEA
-
BSL
22h 01m2 stops
British Airways Logo
7:05 pm - 4:55 pm
BSL
-
SEA
30h 50m1 stop
$483British Airways
mar., feb. 3 - mar., feb. 10
Multiple Airlines Logo
2:15 pm - 9:50 am
SEA
-
BSL
34h 35m1 stop
Multiple Airlines Logo
11:15 am - 11:40 am
BSL
-
SEA
33h 25m1 stop
$484Multiple Airlines
dom., feb. 8 - dom., feb. 22
British Airways Logo
6:50 pm - 10:20 pm
SEA
-
BSL
18h 30m1 stop
British Airways Logo
7:05 pm - 4:55 pm
BSL
-
SEA
30h 50m1 stop
$485British Airways
mar., feb. 3 - mar., feb. 10
KLM Logo
4:00 pm - 10:40 am
SEA
-
BSL
34h 40m1 stop
KLM Logo
6:30 pm - 4:30 pm
BSL
-
SEA
31h 00m1 stop
$487KLM
lun., mar. 16 - lun., mar. 30
Multiple Airlines Logo
2:15 pm - 9:50 am
SEA
-
BSL
34h 35m1 stop
Multiple Airlines Logo
6:05 am - 3:10 pm
BSL
-
SEA
18h 05m2 stops
$488Multiple Airlines
dom., feb. 8 - mié., feb. 18
Air France Logo
3:05 pm - 10:40 am
SEA
-
BSL
34h 35m1 stop
Air France Logo
5:55 pm - 11:40 am
BSL
-
SEA
26h 45m1 stop
$489Air France
jue., feb. 5 - mar., feb. 10
United Airlines Logo
7:00 am - 7:40 pm
SEA
-
BSL
27h 40m2 stops
United Airlines Logo
9:50 am - 1:20 pm
BSL
-
SEA
12h 30m1 stop
$490United Airlines
jue., feb. 5 - dom., feb. 8

Turkish Airlines flights from Seattle to Basel

Our best Turkish Airlines deals on Seattle to Basel flight tickets
Turkish Airlines
Feb 5
SEA7:00 pmSeattle/Tacoma Intl
30h 00m
1 stop
BSL10:00 amBasel EuroAirport Swiss
Feb 8
BSL6:05 pmBasel EuroAirport Swiss
32h 00m
1 stop
SEA5:05 pmSeattle/Tacoma Intl
$909
Turkish Airlines
Feb 5
SEA7:00 pmSeattle/Tacoma Intl
30h 00m
1 stop
BSL10:00 amBasel EuroAirport Swiss
Feb 8
BSL6:05 pmBasel EuroAirport Swiss
32h 00m
1 stop
SEA5:05 pmSeattle/Tacoma Intl
$954

British Airways flights from Seattle to Basel

Our best British Airways deals on Seattle to Basel flight tickets
British Airways
Feb 3
SEA8:04 amSeattle/Tacoma Intl
22h 01m
2 stops
BSL3:05 pmBasel EuroAirport Swiss
Feb 10
BSL7:05 pmBasel EuroAirport Swiss
30h 50m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$483
British Airways
Feb 3
SEA6:50 pmSeattle/Tacoma Intl
18h 30m
1 stop
BSL10:20 pmBasel EuroAirport Swiss
Feb 10
BSL7:05 pmBasel EuroAirport Swiss
30h 50m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$485
British Airways
Mar 6
SEA6:50 pmSeattle/Tacoma Intl
13h 15m
1 stop
BSL5:05 pmBasel EuroAirport Swiss
Mar 14
BSL7:10 amBasel EuroAirport Swiss
13h 20m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
$491

momondo Fare Finder

 
Customize your flight search to find flights from Seattle 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, momondo users made 832,500 searches. Data last updated enero 8, 2026.
Use the filters below to find and compare flights from Seattle to Basel that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

jue. 2/5

8:10 am-12:30 pm

2 stops19h 20m

Basel EuroAirport Swiss

mar. 2/10

9:50 am-7:16 pm

2 stops18h 26m

$469

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

mar. 2/3

7:00 am-12:30 pm

2 stops20h 30m

Basel EuroAirport Swiss

mar. 2/10

6:50 am-8:57 pm

2 stops23h 07m

$480

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

dom. 2/8

2:15 pm-9:50 am

1 stop34h 35m

Basel EuroAirport Swiss

mié. 2/18

11:15 am-11:40 am

1 stop33h 25m

$482

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

mar. 2/3

8:04 am-3:05 pm

2 stops22h 01m

Basel EuroAirport Swiss

mar. 2/10

7:05 pm-4:55 pm

1 stop30h 50m

$483

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

dom. 2/8

2:15 pm-9:50 am

1 stop34h 35m

Basel EuroAirport Swiss

dom. 2/22

11:15 am-11:40 am

1 stop33h 25m

$484

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

mar. 2/3

6:50 pm-10:20 pm

1 stop18h 30m

Basel EuroAirport Swiss

mar. 2/10

7:05 pm-4:55 pm

1 stop30h 50m

$485

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

lun. 3/16

4:00 pm-10:40 am

1 stop34h 40m

Basel EuroAirport Swiss

lun. 3/30

6:30 pm-4:30 pm

1 stop31h 00m

$487

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

dom. 2/8

2:15 pm-9:50 am

1 stop34h 35m

Basel EuroAirport Swiss

mié. 2/18

6:05 am-3:10 pm

2 stops18h 05m

$488

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

jue. 2/5

3:05 pm-10:40 am

1 stop34h 35m

Basel EuroAirport Swiss

mar. 2/10

5:55 pm-11:40 am

1 stop26h 45m

$489

SeattleBasel

SEA - BSL

SEABSL

Seattle/Tacoma Intl

jue. 2/5

7:00 am-7:40 pm

2 stops27h 40m

Basel EuroAirport Swiss

dom. 2/8

9:50 am-1:20 pm

1 stop12h 30m

$490

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 Basel from

How to get the cheapest flight ticket from Seattle to Basel

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 Seattle to Basel flights?

You could potentially save up to 23% on your flight if you consider stops on a Seattle to Basel flight.

When to book flights from Seattle to Basel

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Basel according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Basel (SEA to EAP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Basel

Fastest flight time

13h 15m

Direct flights

None
The fastest flight from Seattle to Basel takes 13h 15m
There are no direct flights from Seattle to Basel. There are no popular flight routes from Seattle to Basel.
Search flight deals

  • How far is Seattle/Tacoma Intl to Basel by plane?

    A flight from Seattle/Tacoma Intl to Basel will travel around 5202.0 mi. Typically, this will take 13h 15m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Basel?

    Prices for flights from Seattle/Tacoma Intl Airport to Basel are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Basel?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Basel?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Basel.

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

    The travel and health documents required for your trip to Basel 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 Basel. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Seattle to Basel?

Best airlines flying from Seattle to Basel

Compare and see reviews for airlines that fly from Seattle to Basel with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $467Free CancellationRating
6.7
7,657 reviews
Search British Airways flights
LufthansaPriceFrom $483Free CancellationRating
6.8
7,696 reviews
Search Lufthansa flights

Why use momondo?

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

It is quick and easy to find Seattle to Basel flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Basel that suits you.

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

Yes. All flights to Basel from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Seattle to Basel flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Basel from Seattle 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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