Cheap Flights from Seattle to San Francisco — $68

The route Seattle — San Francisco is served by many carriers — 4 in total, including Alaska Airlines, United Airlines, Frontier Airlines, and Southwest Airlines. This gives passengers wide opportunities: from finding the lowest fare (from $68) to selecting flights by schedule or service class. Our service aggregates data from multiple booking systems so you can compare offers in one place. This saves time and money: no need to check dozens of sites — just pick the right option and book online.

Seattle–Tacoma International (SEA) is the region’s primary international hub and handles most long-haul and domestic flights, with major carriers like Alaska Airlines and Delta dominating schedules alongside several international carriers. It sits about 14 miles south of downtown Seattle; light rail typically links the airport to downtown in roughly 35–40 minutes with fares generally in a low single-digit range, while taxis or rideshares take 20–30 minutes depending on traffic and can be pricier. Pros: full-service amenities, many nonstop options and good ground connections. Cons: can be busy during peak hours and sometimes faces weather- or demand-related delays. Paine Field (PAE) to the north is a smaller, budget-leaning gateway that usually serves low-cost and leisure carriers for select domestic routes. It’s around 28 miles from downtown; driving takes about 35–45 minutes, and public shuttle services or regional buses can connect travelers with longer transfer times but lower fares. Pros: shorter lines and simpler navigation; cons: fewer flight frequencies and limited international offerings compared with SEA.

San Francisco International Airport (SFO) is the region’s primary international hub, handling a mix of legacy carriers and many global and transcontinental flights alongside low-cost domestic services. Located about 13 miles south of downtown San Francisco, it’s typically 20–35 minutes by BART or taxi without heavy traffic; fares for BART run in the low-to-mid single digits while rideshares/taxis can be considerably more. Ground options include BART, shuttle buses, airport shuttles, and rental cars, with public transit usually the most economical. Pros: extensive international connections, comprehensive amenities, and robust public-transit links. Cons: can be busy at peak times and fares for door-to-door options tend to be higher.