Direct (nonstop) flights from San Francisco to Seattle
3 airlines fly nonstop from San Francisco International (SFO) to Seattle Tacoma International (SEA). It's 678 miles (1,091 km), about 2h 19m in the air. Operated by Alaska Airlines, Delta Air Lines, United Airlines.
Alaska Airlines
Delta Air Lines
United Airlines
Route data last updated: May 24, 2026
Airlines with non-stop flights
AS
Alaska Airlines
DL
Delta Air Lines
UA
United Airlines
Alternative Routes
Other ways to fly from San Francisco to Seattle with one stop · direct emits 125 kg CO₂ per passenger
Looking for the return flight?
SEA → SFO: Flights from Seattle to San FranciscoOther direct flights from San Francisco
Direct flights from Seattle (SEA)
Frequently Asked Questions
How long is the direct flight from San Francisco to Seattle?
A nonstop flight from San Francisco (SFO) to Seattle (SEA) takes approximately 2 hours and 19 minutes. The distance is 678 miles (1,091 km).
Which airlines fly nonstop from San Francisco to Seattle?
3 airlines: Alaska Airlines, Delta Air Lines, United Airlines.
Is there a nonstop flight from San Francisco to Seattle?
Yes. 3 airlines: Alaska Airlines, Delta Air Lines, United Airlines.
How far is San Francisco from Seattle?
The flight distance from San Francisco to Seattle is 678 miles (1,091 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as the length of Italy.
What type of aircraft flies from San Francisco to Seattle?
At 2h 19m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from San Francisco to Seattle?
Roughly 125 kg CO2 per passenger one-way. That's about the same as driving 625 km.
Is the return flight from Seattle to San Francisco also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from San Francisco to Seattle?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at San Francisco International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.