Cheap flights from Philadelphia to Key West

One-way fares from $146 · PHL → EYW · prices found by travellers in the last 48 hours

Compare all dates Key West → Philadelphia
Cheapest fare
$146

Frontier Airlines · Thu, Dec 31

Cheapest month
December

from $146

Direct flights
Not recently

Usually 1+ stop

Quickest trip
4h 00m

1,820 km

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Cheapest month to fly from Philadelphia to Key West

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. December 2026 Cheapest $146

Cheapest dates in December 2026

The lowest fares we've seen for each day, cheapest first.

Frontier Airlines
Depart22:20 Thu, Dec 31PHL → EYW 4h 00m · 1 stop
$146one way, per person
View deal
See every date in December 2026 →

Plan the rest of your trip to Key West

Where to stay, what to do and getting around, from our travel partners.

Where to stay

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Things to do

Things to do in Key WestTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in Key WestPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in Key WestCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Philadelphia to Key West

Philadelphia (PHL) and Key West (EYW) are about 1,820 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 4h 00m. Over the next few months, one-way fares start from $146, and December 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Philadelphia to Key West?

The cheapest one-way fare we've seen recently is $146 with Frontier Airlines, departing Thursday, December 31, 2026.

What is the cheapest month to fly from Philadelphia to Key West?

December 2026 currently has the lowest fares, from $146 one way.

Are there direct flights from Philadelphia to Key West?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Philadelphia to Key West?

The quickest journey we've seen takes about 4h 00m. Philadelphia and Key West are around 1,820 km apart.

Which airlines fly from Philadelphia to Key West?

Recent fares on this route were with Frontier Airlines.

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