flights.net SFO → SEA
- Distance
- 679 mi
- Carriers
- 3
San Francisco International Airport (SFO) to Seattle–Tacoma International Airport (SEA) is a US domestic route of about 679 miles. A short, high-density tech corridor pitting United's San Francisco hub against Alaska's Seattle base. San Francisco to Seattle runs frequent regional and narrowbody banks for business commuters between two innovation centers.
Connecting San Francisco, United States with Seattle, United States, this is one of the more travelled US domestic city pairs. Carriers fly the roughly 679-mile sector nonstop in about 1h 51m. Departures use San Francisco International Airport, a 4 terminals airport that is a base for United Airlines, Alaska Airlines; arrivals land at Seattle–Tacoma International Airport, which has 1 terminal and anchors Alaska Airlines, Delta Air Lines. With hub operations at both ends, frequencies and schedules on the SFO–SEA sector stay competitive year-round.
Route facts
| Route | San Francisco International Airport (SFO) → Seattle–Tacoma International Airport (SEA) |
|---|---|
| Distance | 679 miles |
| Nonstop flight time | approximately 1h 51m |
| Nonstop carriers | 3 |
| Aircraft types | Boeing 737, Airbus A320, Embraer E175 |
| Market | US domestic |
Carriers on this route
Alaska Airlines, United Airlines, Delta Air Lines operate nonstop service from San Francisco to Seattle. On-time performance and cancellation rates appear here once this route's BTS data is baked.
- Alaska Airlines (AS)
- United Airlines (UA)
- Delta Air Lines (DL)
Aircraft on this route
Carriers typically operate the Boeing 737, Airbus A320, Embraer E175 between San Francisco and Seattle. The exact type varies by airline, frequency and season.
Best time to fly
July to September is peak for clear skies and Mount Rainier views on approach. Off-season fares fall sharply once the rains return.
Connecting your trip
Planning departure or arrival logistics? See our airport guides for San Francisco International Airport (SFO) and Seattle–Tacoma International Airport (SEA) for terminals, hub airlines and the other routes each airport serves.
Fares & booking
Fares on the San Francisco to Seattle route move with season and demand; booking roughly two to eight weeks ahead usually beats walk-up prices, and midweek departures tend to be cheaper than weekends. We show indicative cached fares for SFO–SEA where available and link out to live Skyscanner search for current, bookable prices.
Related routes
- SEA → DEN Seattle to Denver
- SAN → SFO San Diego to San Francisco
- IAD → SFO Washington to San Francisco
- DEN → SFO Denver to San Francisco
- EWR → SFO Newark to San Francisco
- LAX → SEA Los Angeles to Seattle
- SEA → LAX Seattle to Los Angeles
- BOS → SFO Boston to San Francisco
- JFK → SEA New York to Seattle
- LAX → SFO Los Angeles to San Francisco
- SFO → LAX San Francisco to Los Angeles
- JFK → SFO New York to San Francisco
- SFO → JFK San Francisco to New York
- SFO → LHR San Francisco to London
Frequently asked questions
- How far is the flight from San Francisco to Seattle?
- San Francisco International Airport (SFO) to Seattle–Tacoma International Airport (SEA) is about 679 miles (1,093 km) by great-circle distance. A nonstop flight takes approximately 1h 51m.
- Which airlines fly nonstop from San Francisco to Seattle?
- Alaska Airlines, United Airlines and Delta Air Lines operate nonstop service from San Francisco International Airport (SFO) to Seattle–Tacoma International Airport (SEA).
- What aircraft are used on the SFO to SEA route?
- Carriers typically operate the Boeing 737, Airbus A320 and Embraer E175 on the San Francisco–Seattle route.
- When is the best time to fly from San Francisco to Seattle?
- July to September is peak for clear skies and Mount Rainier views on approach. Off-season fares fall sharply once the rains return.
- Is SFO to SEA a nonstop flight?
- Yes. San Francisco International Airport (SFO) to Seattle–Tacoma International Airport (SEA) is a directional nonstop route flown by 3 carriers; connecting itineraries via other hubs are also widely available.
- What countries does the SFO to SEA route connect?
- This route links San Francisco, United States with Seattle, United States.
- Which airports does the San Francisco to Seattle route use?
- Flights depart San Francisco International Airport (SFO/KSFO) in San Francisco and arrive at Seattle–Tacoma International Airport (SEA/KSEA) in Seattle.
Data sources
- Airport identity and geography courtesy of OurAirports (ourairports.com); carriers and aircraft curated editorially.