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C$256 Cheap Flights from Key West International (EYW) to San Francisco International (SFO)

Compare Key West International to San Francisco International flight deals

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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 C$573. Find the lowest prices on one-way and return tickets right here.
San Francisco.C$256 per passenger.Departing Mon., Jul. 13.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Key West International on Mon., Jul. 13, arriving in San Francisco International.Price includes taxes and charges.From C$256, select.
San Francisco.C$320 per passenger.Departing Sun., Aug. 23.One-way flight with Breeze Airways.Outbound indirect flight with Breeze Airways, departs from Key West International on Sun., Aug. 23, arriving in San Francisco International.Price includes taxes and charges.From C$320, select.
San Francisco.C$340 per passenger.Departing Fri., Jun. 26.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Key West International on Fri., Jun. 26, arriving in San Francisco International.Price includes taxes and charges.From C$340, select.
San Francisco.C$347 per passenger.Departing Thu., Sep. 24.One-way flight with Breeze Airways.Outbound indirect flight with Breeze Airways, departs from Key West International on Thu., Sep. 24, arriving in San Francisco International.Price includes taxes and charges.From C$347, select.
San Francisco.C$404 per passenger.Departing Thu., May 28.One-way flight with Breeze Airways.Outbound indirect flight with Breeze Airways, departs from Key West International on Thu., May 28, arriving in San Francisco International.Price includes taxes and charges.From C$404, select.
San Francisco.C$420 per passenger.Departing Sat., Nov. 14.One-way flight with Breeze Airways.Outbound indirect flight with Breeze Airways, departs from Key West International on Sat., Nov. 14, arriving in San Francisco International.Price includes taxes and charges.From C$420, select.
San Francisco.C$504 per passenger.Departing Fri., Dec. 18.One-way flight with United.Outbound indirect flight with United, departs from Key West International on Fri., Dec. 18, arriving in San Francisco International.Price includes taxes and charges.From C$504, select.
San Francisco.C$792 per passenger.Departing Sun., Jan. 3.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Key West International on Sun., Jan. 3, arriving in San Francisco International.Price includes taxes and charges.From C$792, select.

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 July.
May
from C$404
Jun.
from C$340
Jul.
from C$256
Aug.
from C$320
Sep.
from C$347
Oct.
Find prices
Nov.
from C$420
Dec.
from C$504
Jan.
from C$792
Feb.
Find prices
Mar.
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Apr.
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Key West International to San Francisco International: Alternative routes

Compare routes from Key West International to San Francisco below. You may find an airport to fly into that's cheaper, faster, or easier than San Francisco International.

San Francisco International

18km from central San Francisco
ClosestCheapest
from C$256
Search flights

Oakland Metropolitan Oak

19km from central San Francisco
from C$618
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San Carlos

33km from central San Francisco
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Concord

40km from central San Francisco
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San Jose International

63km from central San Francisco
from C$436
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San Jose Reid-Hillview

72km from central San Francisco
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Santa Rosa

89km from central San Francisco
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Key West to San Francisco: Flight information

The things to know before you go.
Cheapest flight foundC$256
Cheapest month to flyJuly

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 C$402. 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 C$403.
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 January.
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 Wednesday, January 27, 2027.
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.

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

  • If you're traveling during a popular month like July, head to the airport even earlier. It's smart to arrive up to four hours before international flights and two hours ahead of a domestic departure. Security lines will be longer during peak periods like spring break and summer.

  • We make it a cinch to get a flight with a stopover. To look at the options for flights from Key West International Airport to San Francisco International Airport, deselect 'Direct flights only.' Then, pick a flight that has a stop long enough to explore the city of your choice. Popular stopovers between EYW and SFO are:

    • Hartsfield-Jackson Atlanta International Airport

    • Orlando International Airport

    • Dallas/Fort Worth International Airport

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

  • The best price we've seen for a one-way ticket from Key West International Airport to San Francisco International Airport is C$256. The cheapest price for a return flight is C$403. Keep in mind that fares may change due to availability at the time of booking.

  • Don't leave things to the last minute. You're more likely to find cheap flight tickets from EYW to SFO if you book ahead. Airlines often offer some great early bird deals.

  • If you can be flexible with your travel plans, use the 'Whole month' tool. It'll give you the cheapest price in each month when searching for your ticket from Key West International Airport to San Francisco International Airport.

  • Set up a Price Alert for cheap flight tickets from EYW to SFO. There's no need to check every day to see if prices have dropped. We'll let you know as soon as there's a change in price.

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

Handy information about Key West International Airport (EYW)

  • Traveling from central Key West to Key West International Airport takes about 40 minutes by public transport. If you ride-share, drive or hail a cab, you'll cover the 3 kilometres in 6 minutes or so, depending on traffic conditions.

  • Have an early flight from Key West International Airport to San Francisco International Airport? Avoid the hassle of rushing to the airport (and catch some extra z's) by picking one of these stays near EYW:

Arriving at San Francisco International Airport (SFO)

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

  • San Francisco International Airport is approximately 21 kilometres from central San Francisco. With your own car rental or if you take a cab, the drive is around 20 minutes.

  • It typically takes 47 minutes if you're traveling on public transport.

When to fly to San Francisco International Airport (SFO)

  • It's time to work out your travel dates for your flight from Key West International Airport to San Francisco International Airport. August is the busiest month to visit San Francisco. If you want a more low-key vibe, go in February.

  • Before locking in your flight from Key West International Airport to San Francisco International Airport, think about the kind of weather you like. September is the warmest month in San Francisco, with the temperature ranging from 12ºC to 22ºC.

  • If you like cooler conditions, search for a cheap ticket from EYW to SFO in January. Temperatures average between 6ºC and 16ºC then.

More about San Francisco

  • As soon as you've booked your flights from EYW to SFO, you'll need to find a place to stay in San Francisco. Make one of these accommodation options your base for exploring this city:

  • There are so many things to do and see in this city it can be hard to work out where to start. Golden Gate Bridge, Alcatraz Island and Lombard Street are top attractions which should feature on any good San Francisco itinerary.

Complete your San Francisco trip with hotels and a car rental

  • Comparing flights is not our only party trick. Once you've booked your cheap ticket to San Francisco International Airport, check out our car rental offers that'll give you the flexibility to travel around at your own pace. Then, take a look at our exclusive rates for hotels to find the perfect San Francisco stay.

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