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 — Dec 8 → 12, 4 nights, 1 stop.
Best fare
Key West Dec 8 → 12 · 4 nights · 1 stop
In the typical range for this route ($301–$321).
Prices checked on Oct 7
By month
October 2026 $399
November 2026 $399
December 2026cheapest $321
January 2027 $442
February 2027 $321
March 2027 $360
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Price history
10 weeks tracked · weekly lows
All dates (361 priced)
Dec 8 → 12 4 nights · 1 stop
Dec 9 → 12 3 nights · 1 stop
Dec 15 → 19 4 nights · 1 stop
Feb 6 → 9 3 nights · 1 stop
Feb 6 → 10 4 nights · 1 stop
Feb 27 → Mar 2 3 nights · 1 stop
Feb 27 → Mar 3 4 nights · 1 stop
Dec 7 → 12 5 nights · 1 stop
Dec 12 → 17 5 nights · 1 stop
Dec 14 → 19 5 nights · 1 stop
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