Cheap Flights from Philadelphia, PA to Key West, FL from $124

On Cheapflightsplus.com you will find 164 connecting flights from Philadelphia to Key West. You can compare airfare deals from 3 airlines and multiple travel sites from $124, book and save on cheap plane tickets and last minute offers. Also check out PHL-EYW flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from Philadelphia to Key West depends on and how to choose the most interesting flight option for you.

Distance between Philadelphia and Key West is 1809 miles. Time difference between the cities is 0h. Airplanes depart 05:45 to 20:15 from 4 Philadelphia airports and arrive 05:45 to 20:15 to 2 Key West airports. Average flight time is 23h 20m.

  • The fastest flight 6h 52m
  • Average flight time 23h 20m
  • The earliest flight 05:45
  • The latest flight 20:15
  • Distance 1125 ml

The cheapest months to travel to Key West are june (from 124 $), august (from 126 $), may (from 127 $).

The most expensive months are september (from 311 $), october (from 164 $), july (from 129 $).

What is the lowest airfare Philadelphia to Key West?

The cheapest plane ticket found by our users is $124. This airfare is for economy class on one-way NK2276 flight by Spirit Airlines for June 28, 2025 which leaves Philadelphia Int. in Philadelphia at 20:15 am and arrives at Key West Key West Int. at 09:42.

Economy class
$124
Find
Business class
?
Find
First class
?
Find

Flight Schedule Philadelphia (Pennsylvania) to Key West (Florida)

06:10 — 09:12+1day
27h 2m flight time
Find flight
from$164
06:10 — 09:03 Philadelphia — Miami
NK1005 Spirit Airlines
6h 2m stop
15:05 — 16:10 Miami — Clearwater
NK322 Spirit Airlines
16h stop
08:10 — 09:12 Clearwater — Key West
G4973 Allegiant Air
06:15 — 09:43+1day
27h 28m flight time
Find flight
from$182
06:15 — 08:51 Philadelphia — Sanford
NK3996 Spirit Airlines
23h 41m stop
08:32 — 09:43 Sanford — Key West
G42877 Allegiant Air
15:03 — 09:42+1day
18h 39m flight time
Find flight
from$177
15:03 — 17:45 Philadelphia — Sanford
NK2842 Spirit Airlines
14h 45m stop
08:30 — 09:42 Sanford — Key West
G42861 Allegiant Air
17:11 — 14:44+1day
21h 33m flight time
Find flight
from$140
17:11 — 19:00 Philadelphia — Charlotte
NK1128 Spirit Airlines
47m stop
19:47 — 21:30 Charlotte — Clearwater
NK1295 Spirit Airlines
16h 10m stop
13:40 — 14:44 Clearwater — Key West
G41048 Allegiant Air
17:32 — 08:04+1day
14h 32m flight time
Find flight
from$173
17:32 — 19:26 Philadelphia — Detroit
NK2268 Spirit Airlines
2h 30m stop
21:56 — 00:39 Detroit — Clearwater
NK2676 Spirit Airlines
6h 21m stop
07:00 — 08:04 Clearwater — Key West
G4971 Allegiant Air
18:18 — 14:10+1day
19h 52m flight time
Find flight
from$161
18:18 — 21:15 Philadelphia — Miami
NK877 Spirit Airlines
33m stop
21:48 — 23:00 Miami — Sanford
NK676 Spirit Airlines
14h stop
13:00 — 14:10 Sanford — Key West
G41340 Allegiant Air
18:18 — 09:12+1day
14h 54m flight time
Find flight
from$164
18:18 — 21:15 Philadelphia — Miami
NK877 Spirit Airlines
44m stop
21:59 — 23:06 Miami — Clearwater
NK1954 Spirit Airlines
9h 4m stop
08:10 — 09:12 Clearwater — Key West
G4973 Allegiant Air
18:18 — 17:01+1day
22h 43m flight time
Find flight
from$169
18:18 — 21:15 Philadelphia — Miami
NK877 Spirit Airlines
33m stop
21:48 — 23:00 Miami — Sanford
NK676 Spirit Airlines
16h 51m stop
15:51 — 17:01 Sanford — Key West
G41349 Allegiant Air
18:47 — 14:10+1day
19h 23m flight time
Find flight
from$126
18:47 — 21:31 Philadelphia — Sanford
NK3161 Spirit Airlines
15h 29m stop
13:00 — 14:10 Sanford — Key West
G41340 Allegiant Air
18:47 — 13:07+1day
18h 20m flight time
Find flight
from$189
18:47 — 21:31 Philadelphia — Orlando
NK3161 Spirit Airlines
14h 21m stop
11:52 — 13:07 Orlando — Key West
MX162 Mexicana
19:05 — 13:07+1day
18h 2m flight time
Find flight
from$188
19:05 — 21:48 Philadelphia — Orlando
NK1566 Spirit Airlines
14h 4m stop
11:52 — 13:07 Orlando — Key West
MX162 Mexicana
19:12 — 09:40+1day
14h 28m flight time
Find flight
from$127
19:12 — 21:54 Philadelphia — Sanford
NK2276 Spirit Airlines
10h 36m stop
08:30 — 09:40 Sanford — Key West
G42859 Allegiant Air
19:12 — 16:45+1day
21h 33m flight time
Find flight
from$189
19:12 — 21:54 Philadelphia — Orlando
NK2276 Spirit Airlines
11h 57m stop
09:51 — 12:20 Orlando — Indianapolis
NK2480 Spirit Airlines
1h 46m stop
14:06 — 16:45 Indianapolis — Key West
G41335 Allegiant Air
20:15 — 09:42+1day
13h 27m flight time
Find flight
from$124
20:15 — 22:55 Philadelphia — Sanford
NK2276 Spirit Airlines
9h 35m stop
08:30 — 09:42 Sanford — Key West
G42861 Allegiant Air
20:15 — 09:43+1day
13h 28m flight time
Find flight
from$129
20:15 — 22:55 Philadelphia — Sanford
NK2276 Spirit Airlines
9h 37m stop
08:32 — 09:43 Sanford — Key West
G42877 Allegiant Air
Full flight schedule will help you in detecting at what time planes fly from Philadelphia to Key West. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on October 18, 2025.

Popular Airlines on the Route

The flight Philadelphia — Key West is served by 3 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Sun Country Airlines - 7 departures per week at the price of from $ 241 . And the most expensive tickets are offered by United Airlines airline - from $ 1345.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 164 flights with layovers on the route. The fastest connecting flight is NK3996 by Spirit Airlines takes 6h 52m and the cheapest is NK2276 by Spirit Airlines for $124.

  • SY - Sun Country Airlines
    from $241
    Find
  • UA - United Airlines
    from $217
    Find
  • NK - Spirit Airlines
    from $124
    Find
See more connecting flights

Airports

You can fly from Philadelphia to Key West from 4 airports (Philadelphia Int., North Philadelphia, Mustin Alf, Philadelphia Sea Plane Base).

Philadelphia airports

  • Philadelphia Int.-PHL
    from $124
    Find
  • North Philadelphia-PNE
    Find
  • Mustin Alf-MUV
    Find
  • Philadelphia Sea Plane Base-PSQ
    Find

Key West airports

  • NAS-NQX
    Find
  • Key West Int.-EYW
    Find

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

Back