Cheap Flights from Key West to San Francisco
No deal from Key West to San Francisco has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from Key West to San Francisco, the lowest round-trip fare we recorded was $300, in August. The typical fare was $329. August was the cheapest month we saw and July the dearest.
The most recent price we saw on this route was $340 on United, seen Oct 16. It is an unverified observation and may have changed.
See every deal <a href="/from/key-west">from Key West</a>, <a href="/to/san-francisco">to San Francisco</a>, or the return direction <a href="/from/san-francisco/to/key-west">San Francisco to Key West</a>.
Latest price we saw: Key West to San Francisco
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Key West (EYW) to San Francisco (SFO) | $340 | 6.7¢ | Dec 19 – Dec 26 | United | Oct 16 | Check price |
Price history: Key West to San Francisco
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $320 | $337 | 6 |
| Sep 2026 | $300 | $332 | 20 |
| Aug 2026 | $300 | $308 | 35 |
| Jul 2026 | $339 | $339 | 1 |
Frequently asked questions
How many flight deals from Key West to San Francisco are on Sparkflights right now?
There are 0 verified deals from Key West to San Francisco on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Key West to San Francisco?
The lowest fare we've recorded from Key West to San Francisco is $300, based on 62 price observations over 4 months.
How much does a flight from Key West to San Francisco cost?
The typical round-trip fare we observed from Key West to San Francisco is $329, against a recorded low of $300. These are observations, not quotes.
When is the cheapest month to fly Key West to San Francisco?
August was the cheapest month we observed from Key West to San Francisco and July the dearest, over 4 months of data.
What is the current price from Key West to San Francisco?
The most recent fare our sweep saw from Key West to San Francisco is $340, on Oct 16. It is an unverified observation rather than a verified deal, so check it before booking.