Seattle (SEA) → Basel (BSL)
About Seattle to Basel Flights
Discover the best flights from Seattle to Basel, covering 8,386 km in approximately 10h 59m. Seattle (SEA) to Basel (BSL) is one of the major long-haul routes connecting United States and Switzerland. 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 Seattle to Basel.
12-Month Price History
Flight prices from Seattle to Basel vary significantly throughout the year. February typically offers the best deals with average prices around $1551, while July sees the highest prices, averaging $2627. 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
147 days
For best prices
Booking Tips
For the best prices on Seattle to Basel flights, we recommend booking 141 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 |
|---|---|---|---|
American Airlines AA | $2510 | $11210 | $15010 |
Alaska Airlines AS | $2640 | $11170 | $15580 |
Delta Air Lines DL | $2930 | $10100 | $15490 |
United Airlines UA | $3070 | $8920 | $16420 |
Air France AF | $3140 | $10730 | $18100 |
Lufthansa LH | $3230 | $10250 | $18560 |
British Airways BA | $3310 | $9810 | $18110 |
American Airlines
AA
Economy
$2510
Business
$11210
First
$15010
Alaska Airlines
AS
Economy
$2640
Business
$11170
First
$15580
Delta Air Lines
DL
Economy
$2930
Business
$10100
First
$15490
United Airlines
UA
Economy
$3070
Business
$8920
First
$16420
Air France
AF
Economy
$3140
Business
$10730
First
$18100
Lufthansa
LH
Economy
$3230
Business
$10250
First
$18560
British Airways
BA
Economy
$3310
Business
$9810
First
$18110
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
Seattle → Zurich
Seattle-Tacoma International (SEA) to Zürich (ZRH)
Distance: 8,439 km
Average price: $1776
Seattle → Stuttgart
Seattle-Tacoma International (SEA) to Stuttgart (STR)
Distance: 8,349 km
Average price: $1758
Seattle → Geneva
Seattle-Tacoma International (SEA) to Geneva (GVA)
Distance: 8,454 km
Average price: $1779
Seattle → Stuttgart
Seattle-Tacoma International (SEA) to Stuttgart (STR)
Distance: 8,349 km
Average price: $1758
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Frequently Asked Questions
How long is the flight from Seattle to Basel?
The flight time from Seattle (SEA) to Basel (BSL) 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 Seattle and Basel?
The aerial distance between Seattle and Basel is 8,386 kilometers (5,211 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Seattle to Basel?
Several airlines operate flights between Seattle and Basel, 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 Seattle to Basel?
Based on historical data, February typically offers the lowest airfares for flights from Seattle to Basel. 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 Basel?
For the best prices on Seattle to Basel flights, we recommend booking 174 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from Seattle to Basel?
Visa requirements depend on your nationality and the purpose of your visit. Citizens of United States traveling to Switzerland should check the latest visa requirements. Visit our partner site visarequirements.io for detailed visa information.
What is the time difference between Seattle and Basel?
Seattle operates on America/Los_Angeles time zone, while Basel is in the Europe/Zurich time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.