# Who flies Seattle → San Francisco nonstop?

**3 airlines fly Seattle → San Francisco nonstop: Alaska Airlines, Delta Air Lines and United Airlines.**

| Airline | Routes | Book direct |
|---|---|---|
| Alaska Airlines | Seattle–Tacoma (SEA) → San Francisco (SFO) | https://www.alaskaair.com |
| Delta Air Lines | Seattle–Tacoma (SEA) → San Francisco (SFO) | https://www.delta.com/ |
| United Airlines | Seattle–Tacoma (SEA) → San Francisco (SFO) | https://www.united.com |

bookDirect is the airline's own website. picktheflight earns nothing from it.

Compare fares for SEA-SFO: [Trip.com](https://www.trip.com/flights/seattle-to-san-francisco/tickets-SEA-SFO/?allianceid=1094387&sid=2209817&trip_sub1=c4c6f3cbcbb845d69061b1005-713359) · [Aviasales](https://www.aviasales.com/search/SEA0911SFO1?marker=713359). Affiliate links (Trip.com, Aviasales): picktheflight may earn a commission. It never changes the price or which airlines are listed.

On picktheflight: https://picktheflight.com/?from=SEA&to=SFO · JSON: https://picktheflight.com/intents/SEA/SFO

---
Data built 2026-10-12 from airline schedule tables on Wikipedia ("Airlines and destinations"), matched by exact airport article; airline booking sites from Wikidata. Schedules change. Confirm the flight on the airline's own site before booking.