Basel (BSL) → Seattle (SEA)
About Basel to Seattle Flights
Discover the best flights from Basel to Seattle, covering 8,386 km in approximately 10h 59m. Basel (BSL) to Seattle (SEA) is one of the major long-haul routes connecting Switzerland and United States. With 7 major airlines operating this route, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from Basel to Seattle.
12-Month Price History
Flight prices from Basel to Seattle vary significantly throughout the year. February typically offers the best deals with average prices around $1541, while July sees the highest prices, averaging $2603. Savvy travelers can save up to 41% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
179 days
For best prices
Booking Tips
For the best prices on Basel to Seattle flights, we recommend booking 168 days in advance. International flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
|---|---|---|---|
Alaska Airlines AS | $2050 | $7530 | $12800 |
Air France AF | $2280 | $7990 | $14170 |
American Airlines AA | $2300 | $7170 | $13450 |
United Airlines UA | $2310 | $9170 | $11100 |
British Airways BA | $2410 | $8090 | $14200 |
Delta Air Lines DL | $2590 | $8810 | $14460 |
Lufthansa LH | $3030 | $10320 | $13940 |
Alaska Airlines
AS
Economy
$2050
Business
$7530
First
$12800
Air France
AF
Economy
$2280
Business
$7990
First
$14170
American Airlines
AA
Economy
$2300
Business
$7170
First
$13450
United Airlines
UA
Economy
$2310
Business
$9170
First
$11100
British Airways
BA
Economy
$2410
Business
$8090
First
$14200
Delta Air Lines
DL
Economy
$2590
Business
$8810
First
$14460
Lufthansa
LH
Economy
$3030
Business
$10320
First
$13940
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
Zurich → Seattle
Zürich (ZRH) to Seattle-Tacoma International (SEA)
Distance: 8,439 km
Average price: $1776
Stuttgart → Seattle
Stuttgart (STR) to Seattle-Tacoma International (SEA)
Distance: 8,349 km
Average price: $1758
Geneva → Seattle
Geneva (GVA) to Seattle-Tacoma International (SEA)
Distance: 8,454 km
Average price: $1779
Stuttgart → Seattle
Stuttgart (STR) to Seattle-Tacoma International (SEA)
Distance: 8,349 km
Average price: $1758
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Frequently Asked Questions
How long is the flight from Basel to Seattle?
The flight time from Basel (BSL) to Seattle (SEA) is approximately 10 hours and 59 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between Basel and Seattle?
The aerial distance between Basel and Seattle is 8,386 kilometers (5,211 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Basel to Seattle?
Several airlines operate flights between Basel and Seattle, including Delta Air Lines, Alaska Airlines, American Airlines and 4 more airlines. Most flights on this route include one or more stops.
What is the cheapest month to fly from Basel to Seattle?
Based on historical data, February typically offers the lowest airfares for flights from Basel to Seattle. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to Seattle?
For the best prices on Basel to Seattle flights, we recommend booking 162 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from Basel to Seattle?
Visa requirements depend on your nationality and the purpose of your visit. Citizens of Switzerland traveling to United States should check the latest visa requirements. Visit our partner site visarequirements.io for detailed visa information.
What is the time difference between Basel and Seattle?
Basel operates on Europe/Zurich time zone, while Seattle is in the America/Los_Angeles time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.