Get Me There. San Francisco to Key West
2,544 mi · 1 stop The cheapest round trip from San Francisco to Key West right now is $321 — Oct 17 → 20, 3 nights, 1 stop.
Best fare
Key West Oct 17 → 20 · 3 nights · 1 stop
Above typical for this route ($301–$301) — it usually dips lower.
Prices checked on Sep 17
By month
September 2026 $421
October 2026cheapest $321
November 2026 $321
December 2026 $321
Get the best San Francisco deals by email — most Fridays, free.
Price history
7 weeks tracked · weekly lows
All dates (356 priced)
Oct 17 → 20 3 nights · 1 stop
Oct 17 → 21 4 nights · 1 stop
Oct 24 → 27 3 nights · 1 stop
Oct 24 → 28 4 nights · 1 stop
Oct 27 → 31 4 nights · 1 stop
Oct 28 → 31 3 nights · 1 stop
Oct 31 → Nov 3 3 nights · 1 stop
Oct 31 → Nov 4 4 nights · 1 stop
Nov 7 → 11 4 nights · 1 stop
Dec 1 → 5 4 nights · 1 stop
The Friday Deal Sheet
The week's best deals from San Francisco, most Fridays — free.