315 € Cheap Flights from Key West International to San Francisco International

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Flight deals from Key West International to San Francisco International

Looking for a cheap last-minute deal or the best return flight from Key West International Airport to San Francisco International Airport? If you want to travel next month, return fares start from 336 €. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Key West International to San Francisco International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Key West International to San Francisco International flights are currently cheapest in September.

Key West to San Francisco: Flight information

The things to know before you go.
Cheapest flight found315 €
Cheapest month to flySeptember

Finding cheap flights from Key West International to San Francisco International: Frequently asked questions

The best price we found for a return flight from Key West International to San Francisco International is 315 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Key West International to San Francisco International. But we found flights with one or more stops from 315 €.
As of May 2026, there are no flights flying from Key West International to San Francisco International.
The cheapest month to fly from Key West International to San Francisco International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Key West International Airport to San Francisco International Airport on Friday, 4 September 2026.
No airlines currently offer direct flights between Key West International Airport and San Francisco International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Francisco International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Francisco is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to San Francisco International.

Flying from Key West International Airport (EYW) to San Francisco International Airport (SFO): what you need to know

  • San Francisco's timezone is UTC-7, making San Francisco three hours behind Key West.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to board your EYW to SFO flight.

  • During popular months like January, it's best to get to the airport earlier. Plan to arrive two hours before domestic departures and four hours ahead of an international flight whenever you're flying during a peak period in general.

  • Think about adding a stopover when booking your ticket from Key West International Airport to San Francisco International Airport. Simply deselect 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Here are some options between EYW and SFO:

    • Dallas/Fort Worth International Airport

    • Hartsfield-Jackson Atlanta International Airport

    • Orlando International Airport

How to find the cheapest flights from Key West International Airport (EYW) to San Francisco International Airport (SFO)

  • 138 € is currently the best price for a one-way Key West International Airport to San Francisco International Airport flight. A return flight starts at 315 €. These fares may change based on availability and demand.

  • It's often best to book early if you want to get cheap tickets from EYW to SFO. That's because airlines adjust prices based on demand, which tends to rise closer to departure.

  • Finding cheap flights from Key West International Airport to San Francisco International Airport is easier if you're flexible with your travel dates. Use the 'Whole month' tool to see the lowest prices across the month and snap up a great deal.

  • Finding cheap flights from EYW to SFO is a cinch with Price Alerts. Simply create one of these automatic alerts and we'll notify you as soon as a new discounted fare appears.

  • Tailor your trip using filters. Pick your preferred departure and arrival times, airlines and total journey duration. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest' flights from Key West International Airport to San Francisco International Airport.

Handy information about Key West International Airport (EYW)

  • You'll find EYW at 3491 South Roosevelt Boulevard.

  • When it comes to the on-time performance of Key West International Airport, data shows 71.92% of flights stick to their scheduled arrival time.

  • To get to Key West International Airport from central Key West, it'll take about 5 minutes if you're planning to drive. Of course, this depends on traffic. It's approximately 3 kilometres from the airport to the city centre.

  • Taking public transport? Expect a trip time of around 40 minutes.

  • Have an early flight from Key West International Airport to San Francisco International Airport? Avoid the hassle of rushing to the terminal (and sneak in some extra snooze time) by choosing one of these stays close to EYW:

Arriving at San Francisco International Airport (SFO)

Getting from San Francisco International Airport (SFO) to central San Francisco

  • From San Francisco International Airport, San Francisco is approximately 21 kilometres away. It takes around 20 minutes to get to the centre driving.

  • Getting to the centre by public transport will take you roughly 45 minutes.

When to fly to San Francisco International Airport (SFO)

  • August is the busiest month for flights from Key West International Airport to San Francisco International Airport. To escape the crowds, travel to San Francisco in February.

  • Book your flight from Key West International Airport to San Francisco International Airport for September if you want to visit San Francisco during its warmest month. Expect temperatures of between 12ºC (54ºF) and 22ºC (72ºF).

  • January has average temperatures of between 6ºC (43ºF) and 16ºC (61ºF). Search for cheap tickets from EYW to SFO sometime then if you like travelling in cooler conditions.

Explore more of United States

  • You've visited San Francisco, now it's time to discover other parts of United States. Journey around 64 kilometres south-east to San Jose to tick off its must-visit sights. From Winchester Mystery House to Rosicrucian Egyptian Museum and San Jose Museum of Art, there's plenty to keep you on the go.

  • Around 257 kilometres south-east of San Francisco, Fresno is another favourite stop in United States. No visit is complete without checking out Forestiere Underground Gardens, Fresno Chaffee Zoo and Shinzen Japanese Garden.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.