Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Philadelphia to Key West
The cheapest flights right now
Philadelphia – Key West
Outbound – Dec 12, 2026
direct
3h 26m Return – Dec 19, 2026
direct
3h 7m $591
2 days ago
Philadelphia – Key West
Outbound – Dec 13, 2026
2 stops
15h 48m ATL
MCO
Return – Dec 19, 2026
1 stop
8h 47m PIE
$212
2 days ago
Philadelphia – Key West
Outbound – Dec 12, 2026
2 stops
17h 48m ATL
MCO
Return – Dec 19, 2026
1 stop
7h 13m TPA
$209
2 days ago
Philadelphia – Key West
Outbound – Dec 13, 2026
2 stops
15h 48m ATL
MCO
Return – Dec 19, 2026
1 stop
7h 13m TPA
$208
2 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$281
Average price of a round trip
$334
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
17h31
A flight from Philadelphia to Key West takes on average 17h31.
Best time
September
According to user searches, the ideal month to go to Key West is September.
The best flight deals for a week
Philadelphia – Key West
Outbound – Dec 12, 2026
direct
3h 26m Return – Dec 19, 2026
direct
3h 7m $591
2 days ago
Philadelphia – Key West
Outbound – Dec 13, 2026
2 stops
15h 48m ATL
MCO
Return – Dec 19, 2026
1 stop
8h 47m PIE
$212
2 days ago
Philadelphia – Key West
Outbound – Dec 12, 2026
2 stops
17h 48m ATL
MCO
Return – Dec 19, 2026
1 stop
7h 13m TPA
$209
2 days ago
Philadelphia – Key West
Outbound – Dec 13, 2026
2 stops
15h 48m ATL
MCO
Return – Dec 19, 2026
1 stop
7h 13m TPA
$208
2 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Tips for finding a cheap flight from Philadelphia to Key West
Check out our tips for booking your flight to Key West (USA) from Philadelphia (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is October, with an average flight ticket price of $186 (calculation over the last two years). The most touristic season corresponds to the months of October, November and February.
For the cheapest flights, it is advisable to buy your ticket at least 49 days before the departure date.
The airline offering the cheapest flight tickets is Frontier Airlines. A ticket from the airline Frontier Airlines to Key West costs on average $334.
The airlines that offer the most flights are .
Price of flight tickets from Philadelphia to Key West
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $281 to $368
- The average price of a flight ticket is about $334
- Prices are lowest for stays in the month of October
- The month in which booking a ticket is cheaper is: November
info departure city :
Philadelphia, USA
airports :
Philadelphia International Airport (PHL)
Northeast Philadelphia Airport (PNE)
local time :
Philadelphia is a city in the country USA, the time zone is [[timezone]]. In Philadelphia, it is currently {fromLocalTime}, the temperature is on average 12°C, with a minimum of 8°C and a maximum of 17°C.
The city of Philadelphia (PHL) has 2 airport(s): Philadelphia International and Northeast Philadelphia
destination info :
Key West, USA
airport :
Key West International Airport (EYW)
local time :
Key West is in the country USA, the time zone is [[timezone]]. In Key West, it is currently {toLocalTime}, the temperature is on average 27°C, with a minimum of 27°C and a maximum of 27°C.
The city of Key West has 1 airport(s): Key West
Useful info about Key West
What is the least touristic period to go to Key West?
If you want to visit Key West during the least touristic period, choose the month of September.
What is the most popular time to travel to Key West?
In Key West, the most popular month is October. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Philadelphia to Key West?
According to our data, it is recommended to book your flight 49 days before your departure. If you book your flight ticket 8 weeks before your departure, you may find a price below average. You can also choose morning flights that are 100% cheaper than afternoon and evening flights. The cheapest day to book a flight from Philadelphia to Key West is Saturday.
What are the arrival and destination airports when traveling between Philadelphia and Key West?
When you leave, you can leave from Philadelphia International, and you will arrive at Key West.
How to reach Philadelphia airport from the city centre?
The airport Philadelphia International is located 12 km or Northeast Philadelphia is located 20 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from Philadelphia to Key West?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Philadelphia and Key West?
In summer, the average temperature is 29°C in Key West and 24°C in Philadelphia. The average rainfall in summer is 124 mm in Key West and 129 mm in Philadelphia. In summer, it is warmer in Key West and it rains less in Key West. In winter, it is colder in Key West and it rains more in Philadelphia.
