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Cheap flights from Phoenix Sky Harbor to Key West International

Compare Phoenix Sky Harbor to Key West International flight deals

Find the cheapest month or even day of the year to fly to Key West International

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Flight deals from Phoenix Sky Harbor to Key West International

Looking for a cheap last-minute deal or the best round-trip flight from Phoenix Sky Harbor Airport to Key West International Airport? If you want to travel next month, round-trip fares start from $327. Find the lowest prices on one-way and round-trip tickets right here.
Key West.$327 per passenger.Departing Sat, Sep 12, returning Sat, Sep 19.Round-trip flight with Frontier Airlines and Breeze Airways.Outbound indirect flight with Frontier Airlines, departing from Phoenix Sky Harbor on Sat, Sep 12, arriving in Key West International.Inbound indirect flight with Breeze Airways, departing from Key West International on Sat, Sep 19, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $327, select.
Key West.$394 per passenger.Departing Sun, Oct 11, returning Sat, Oct 17.Round-trip flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departing from Phoenix Sky Harbor on Sun, Oct 11, arriving in Key West International.Inbound indirect flight with Allegiant Air, departing from Key West International on Sat, Oct 17, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $394, select.
Key West.$397 per passenger.Departing Thu, Oct 29, returning Sun, Nov 1.Round-trip flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departing from Phoenix Sky Harbor on Thu, Oct 29, arriving in Key West International.Inbound indirect flight with Allegiant Air, departing from Key West International on Sun, Nov 1, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $397, select.
Key West.$425 per passenger.Departing Tue, Aug 25, returning Sat, Aug 29.Round-trip flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departing from Phoenix Sky Harbor on Tue, Aug 25, arriving in Key West International.Inbound indirect flight with Allegiant Air, departing from Key West International on Sat, Aug 29, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $425, select.
Key West.$430 per passenger.Departing Fri, Nov 13, returning Tue, Nov 17.Round-trip flight with United.Outbound indirect flight with United, departing from Phoenix Sky Harbor on Fri, Nov 13, arriving in Key West International.Inbound indirect flight with United, departing from Key West International on Tue, Nov 17, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $430, select.
Key West.$480 per passenger.Departing Wed, Dec 9, returning Mon, Dec 14.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Phoenix Sky Harbor on Wed, Dec 9, arriving in Key West International.Inbound indirect flight with Delta, departing from Key West International on Mon, Dec 14, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $480, select.
Key West.$615 per passenger.Departing Sat, Jan 2, returning Thu, Jan 7.Round-trip flight with Frontier Airlines and Breeze Airways.Outbound indirect flight with Frontier Airlines, departing from Phoenix Sky Harbor on Sat, Jan 2, arriving in Key West International.Inbound indirect flight with Breeze Airways, departing from Key West International on Thu, Jan 7, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $615, select.
Key West.$641 per passenger.Departing Thu, Feb 4, returning Mon, Feb 8.Round-trip flight with Allegiant Air and Breeze Airways.Outbound indirect flight with Allegiant Air, departing from Phoenix Sky Harbor on Thu, Feb 4, arriving in Key West International.Inbound indirect flight with Breeze Airways, departing from Key West International on Mon, Feb 8, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $641, select.
Key West.$877 per passenger.Departing Sun, Jan 31, returning Sat, Feb 6.Round-trip flight with United.Outbound indirect flight with United, departing from Phoenix Sky Harbor on Sun, Jan 31, arriving in Key West International.Inbound indirect flight with United, departing from Key West International on Sat, Feb 6, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $877, select.
Key West.$879 per passenger.Departing Mon, Mar 15, returning Sun, Mar 21.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Phoenix Sky Harbor on Mon, Mar 15, arriving in Key West International.Inbound indirect flight with Delta, departing from Key West International on Sun, Mar 21, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $879, select.
Key West.$1,712 per passenger.Departing Tue, Mar 30, returning Fri, Apr 2.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Phoenix Sky Harbor on Tue, Mar 30, arriving in Key West International.Inbound indirect flight with Delta, departing from Key West International on Fri, Apr 2, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $1,712, select.

Find the cheapest month to fly from Phoenix Sky Harbor to Key West International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Phoenix Sky Harbor to Key West International flights are currently cheapest in September.
Aug
from $425
Sep
from $327
Oct
from $394
Nov
from $430
Dec
from $480
Jan
from $615
Feb
from $641
Mar
from $879
Apr
Find prices
May
Find prices
Jun
Find prices
Jul
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Phoenix Sky Harbor to Key West International: Alternative routes

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

Key West International

5km from central Key West
ClosestCheapest
from $327
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Phoenix to Key West: Flight information

The things to know before you go.
Cheapest flight found$327
Cheapest month to flySeptember

Finding cheap flights from Phoenix Sky Harbor to Key West International: Frequently asked questions

The best price we found for a round-trip flight from Phoenix Sky Harbor to Key West International is $327. 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 Phoenix Sky Harbor to Key West International. But we found flights with one or more stops from $327.
There are no flights flying from Phoenix Sky Harbor to Key West International, as of August 2026.
The cheapest month to fly from Phoenix Sky Harbor to Key West International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Phoenix Sky Harbor Airport to Key West International Airport on Saturday, September 12, 2026.
No airlines currently offer direct flights between Phoenix Sky Harbor Airport and Key West 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 Key West 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 Key West is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Frontier Airlines offers the cheapest flight tickets to Key West International.

Flying from Phoenix Sky Harbor Airport (PHX) to Key West International Airport (EYW): what you need to know

  • To ensure you catch your PHX to EYW flight, leave plenty of time to navigate the airport and find your gate. Arriving two hours before international departures and one hour before domestic flights is the general travel rule.

  • During popular months such as April, it's best to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're traveling during peak periods in general.

  • If you'd like to split up your journey, simply uncheck 'Direct flights only' when searching for your ticket from Phoenix Sky Harbor Airport to Key West International Airport. These are the top stopovers between PHX and EYW:

    • Atlanta Hartsfield-Jackson Airport

    • Dallas Fort Worth International Airport

    • Miami International Airport

How to find the cheapest flights from Phoenix Sky Harbor Airport (PHX) to Key West International Airport (EYW)

  • At the moment, $174 is the lowest price we've seen for a one-way Phoenix Sky Harbor Airport to Key West International Airport flight. The best price for a return ticket is $327. Keep in mind that fares could change due to availability at the time of booking.

  • Don't leave things to the last moment. You're more likely to find cheap tickets from PHX to EYW if you book early. Airlines often have some amazing early bird rates.

  • Finding cheap flights from Phoenix Sky Harbor Airport to Key West International Airport is easy if you're flexible with your dates. Use the 'Whole month' function to see the best prices throughout the month and snap up a great deal.

  • Cut down on the time spent looking for cheap flights from PHX to EYW by creating a Price Alert. You'll get an email or notification through the app when a special offer becomes available.

  • Discover the ideal flight for you by using the filters. To see the 'Cheapest,' 'Best' or 'Fastest' flights from Phoenix Sky Harbor Airport to Key West International Airport, use the 'Sort by' tool. You can also filter results by arrival and departure times, airline, and number of stops.

Handy information about Phoenix Sky Harbor Airport (PHX)

  • You'll find PHX at 3400 Sky Harbor Boulevard.

  • Phoenix Sky Harbor Airport gets high marks for its on-time performance. 80% of flights that take off from PHX reach their destination on time.

  • Phoenix Sky Harbor Airport is about 5 kilometers from central Phoenix. If you're catching a cab, ride-sharing or driving from the center, it'll take 10 minutes or so to arrive, depending on the traffic.

  • Catching public transport? Expect a trip time of around 25 minutes.

  • Get your travels off to a hassle-free start by staying near PHX. Whether you've booked an early flight from Phoenix Sky Harbor Airport to Key West International Airport or want to avoid feeling rushed, these stays are the answer:

Arriving at Key West International Airport (EYW)

  • The last thing you need is a long trip to your hotel if you're arriving on a late Phoenix Sky Harbor Airport to Key West International Airport flight. Stay at one of these accommodation options near EYW instead:

  • Pick up a Key West International Airport rental car and discover Key West and beyond with your own set of wheels. Dollar, Alamo and Budget are leading providers to choose from here.

  • Booking your vehicle from Key West International Airport about two weeks in advance increases your chances of getting a good deal.

When to fly to Key West International Airport (EYW)

  • The quietest month for a flight from Phoenix Sky Harbor Airport to Key West International Airport is September, while April is the most popular. Pick the ideal time to visit Key West based on whether you prefer a more fast-paced or easygoing experience.

  • Lock in your flight from Phoenix Sky Harbor Airport to Key West International Airport for August if you want to visit Key West during its warmest month. Expect temperatures of between 26ºC (79ºF) and 30ºC (86ºF).

  • Search for cheap tickets from PHX to EYW in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 18ºC (64ºF) and 23ºC (73ºF) on average.

Explore more of the United States

  • Key West has its own special appeal, but there are so many other corners of the United States waiting to be explored. Around 209 kilometers north-east of Key West, a trip to Miami will keep you busy. Start with leading attractions like Beach, Ocean Drive and Port of Miami.

  • If you're ready to explore another side of the United States, consider Tampa, roughly 386 kilometers north of Key West. Busch Gardens Tampa, The Florida Aquarium and ZooTampa at Lowry Park are key reasons to visit.

More travel options

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.