Seattle (SEA) → San Francisco (SFO)
Seattle–Tacoma International Airport to San Francisco International Airport · 590 nm (1,093 km) · about 2 h nonstop
Cheapest economy fares, checked daily · 39 days of history
Booking links are plain searches — none are affiliate links, and the site earns nothing if you book. Prices are the cheapest fares other travellers recently found, not live availability — always confirm the fare before you pay.
Economy
last checked 8h agoFrontier Airlines · 1 stop · 8h 06m · travel Nov 26 · sold via Kiwi.com
When it's cheapest to travel
Travel dates of the cheapest fare found at each of our 48 daily checks — where the low fares were, not every date.
| Oct 2026 | $47 | 15× |
| Nov 2026 | $53 | 24× |
| Dec 2026 | $64 | 7× |
| Jan 2027 | $75 | 1× |
| Feb 2027 | $110 | 1× |
| Thucheapest | $47 | 17× |
| Mon | $53 | 8× |
| Sat | $62 | 5× |
| Tue | $64 | 12× |
| Wed | $79 | 2× |
| Fri | $132 | 4× |
| Checked | Fare | Airline | Stops | Travel | Sold via | |
|---|---|---|---|---|---|---|
| 2026-10-24 | $88 | Frontier Airlines | 1 stop | Nov 26 | Kiwi.com | Book ↗ |
| 2026-10-23 | $88 | Frontier Airlines | 1 stop | Nov 26 | Kiwi.com | Book ↗ |
| 2026-10-21 | $88 | Frontier Airlines | 1 stop | Nov 26 | Kiwi.com | Book ↗ |
| 2026-10-21 | $88 | Frontier Airlines | 1 stop | Nov 26 | Kiwi.com | Book ↗ |
| 2026-10-20 | $80 | Alaska Airlines | nonstop | Nov 4 | Т-Банк | Book ↗ |
| 2026-10-19 | $75 | Frontier Airlines | 1 stop | Nov 10 | — | Book ↗ |
| 2026-10-19 | $75 | Frontier Airlines | 1 stop | Nov 10 | — | Book ↗ |
| 2026-10-18 | $75 | Frontier Airlines | 1 stop | Nov 10 | — | Book ↗ |
| 2026-10-17 | $75 | Frontier Airlines | 1 stop | Nov 10 | — | Book ↗ |
| 2026-10-16 | $75 | Frontier Airlines | 1 stop | Nov 10 | — | Book ↗ |
| 2026-10-15 | $64 | Alaska Airlines | nonstop | Dec 15 | — | Book ↗ |
| 2026-10-14 | $64 | Alaska Airlines | nonstop | Dec 15 | — | Book ↗ |
Airlines selling the cheapest fares
Which carrier had the lowest fare on each of our checks over the last 90 days.
- Frontier Airlines ×24
- Alaska Airlines ×18
- Southwest Airlines ×4
- United Airlines ×2
About this route
Seattle (SEA) to San Francisco (SFO) is one of the busiest air routes in its market (US domestic). It links Seattle–Tacoma International Airport in United States with San Francisco International Airport in United States. The great-circle distance is about 590 nautical miles (679 statute miles), so expect roughly 2 hours in the air nonstop.
Every night we ask our fare provider for the cheapest one-way economy fare other travellers recently found on this route and record it, with the airline and the seller it was found with. A fare is flagged as a deal when it falls at least 30% below the route's 90-day typical price. Prices are a research starting point, not live availability — the booking links open the itinerary so you can confirm what's on sale right now.
Fares are approximate, from public sources, and can be stale — always verify before booking.