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Cheap flights from Philadelphia to Key West from $83

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Key West departing on 2/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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Spirit Airlines Logo
8:20 am - 1:30 pm
PHL
-
EYW
5h 10m1 stop
Spirit Airlines Logo
12:51 pm - 8:01 pm
EYW
-
PHL
7h 10m1 stop
$148Spirit Airlines
Mon, Jan 26 - Thu, Jan 29
Spirit Airlines Logo
8:20 am - 1:30 pm
PHL
-
EYW
5h 10m1 stop
Spirit Airlines Logo
12:51 pm - 8:01 pm
EYW
-
PHL
7h 10m1 stop
$158Spirit Airlines
Mon, Feb 2 - Thu, Feb 5
Spirit Airlines Logo
8:20 am - 1:30 pm
PHL
-
EYW
5h 10m1 stop
Spirit Airlines Logo
12:51 pm - 8:01 pm
EYW
-
PHL
7h 10m1 stop
$165Spirit Airlines
Mon, Jan 12 - Thu, Jan 15
Spirit Airlines Logo
8:20 am - 1:30 pm
PHL
-
EYW
5h 10m1 stop
Spirit Airlines Logo
12:51 pm - 8:01 pm
EYW
-
PHL
7h 10m1 stop
$172Spirit Airlines
Mon, Jan 19 - Thu, Jan 22
Multiple Airlines Logo
8:43 pm - 12:26 pm
PHL
-
EYW
15h 43m1 stop
Multiple Airlines Logo
10:06 am - 7:57 pm
EYW
-
PHL
9h 51m1 stop
$174Multiple Airlines
Sun, Jan 18 - Thu, Jan 22
Multiple Airlines Logo
5:07 pm - 10:09 am
PHL
-
EYW
17h 02m1 stop
Multiple Airlines Logo
10:06 am - 7:57 pm
EYW
-
PHL
9h 51m1 stop
$179Multiple Airlines
Tue, Jan 20 - Thu, Jan 22
Multiple Airlines Logo
6:00 am - 1:30 pm
PHL
-
EYW
7h 30m1 stop
Multiple Airlines Logo
1:01 pm - 12:08 pm
EYW
-
PHL
23h 07m1 stop
$180Multiple Airlines
Mon, Feb 9 - Tue, Feb 17
Multiple Airlines Logo
8:43 pm - 12:26 pm
PHL
-
EYW
15h 43m1 stop
Multiple Airlines Logo
10:06 am - 7:48 pm
EYW
-
PHL
9h 42m1 stop
$181Multiple Airlines
Sun, Jan 18 - Thu, Jan 22
Multiple Airlines Logo
8:43 pm - 9:26 am
PHL
-
EYW
12h 43m1 stop
Multiple Airlines Logo
10:06 am - 7:48 pm
EYW
-
PHL
9h 42m1 stop
$182Multiple Airlines
Sat, Jan 17 - Thu, Jan 22
Multiple Airlines Logo
5:07 pm - 10:09 am
PHL
-
EYW
17h 02m1 stop
Multiple Airlines Logo
10:49 am - 10:49 am
EYW
-
PHL
24h 00m1 stop
$183Multiple Airlines
Tue, Jan 20 - Wed, Jan 28

Spirit Airlines flights from Philadelphia to Key West

Our best Spirit Airlines deals on Philadelphia to Key West flight tickets
Spirit Airlines
Jan 26
PHL8:20 amPhiladelphia
5h 10m
1 stop
EYW1:30 pmKey West
Jan 29
EYW12:51 pmKey West
7h 10m
1 stop
PHL8:01 pmPhiladelphia
$148
Find similar
Spirit Airlines
Feb 2
PHL8:20 amPhiladelphia
5h 10m
1 stop
EYW1:30 pmKey West
Feb 5
EYW12:51 pmKey West
7h 10m
1 stop
PHL8:01 pmPhiladelphia
$158
Find similar
Spirit Airlines
Jan 12
PHL8:20 amPhiladelphia
5h 10m
1 stop
EYW1:30 pmKey West
Jan 15
EYW12:51 pmKey West
7h 10m
1 stop
PHL8:01 pmPhiladelphia
$165
Find similar

American Airlines flights from Philadelphia to Key West

Our best American Airlines deals on Philadelphia to Key West flight tickets
American Airlines
Dec 20
PHL6:00 amPhiladelphia
5h 27m
1 stop
EYW11:27 amKey West
Dec 25
EYW3:25 pmKey West
16h 05m
1 stop
PHL7:30 amPhiladelphia
$540
Find similar
American Airlines
Dec 20
PHL8:15 amPhiladelphia
3h 19m
EYW11:34 amKey West
Dec 27
EYW12:08 pmKey West
3h 06m
PHL3:14 pmPhiladelphia
$579
Find similar
American Airlines
Dec 20
PHL8:15 amPhiladelphia
3h 19m
EYW11:34 amKey West
Dec 27
EYW8:00 amKey West
6h 36m
1 stop
PHL2:36 pmPhiladelphia
$589
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Key West that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from Philadelphia to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Mon 1/26

8:20 am-1:30 pm

1 stop5h 10m

Key West

Thu 1/29

12:51 pm-8:01 pm

1 stop7h 10m

$148

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Mon 2/2

8:20 am-1:30 pm

1 stop5h 10m

Key West

Thu 2/5

12:51 pm-8:01 pm

1 stop7h 10m

$158

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Mon 1/12

8:20 am-1:30 pm

1 stop5h 10m

Key West

Thu 1/15

12:51 pm-8:01 pm

1 stop7h 10m

$165

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Mon 1/19

8:20 am-1:30 pm

1 stop5h 10m

Key West

Thu 1/22

12:51 pm-8:01 pm

1 stop7h 10m

$172

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sun 1/18

8:43 pm-12:26 pm

1 stop15h 43m

Key West

Thu 1/22

10:06 am-7:57 pm

1 stop9h 51m

$174

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Tue 1/20

5:07 pm-10:09 am

1 stop17h 02m

Key West

Thu 1/22

10:06 am-7:57 pm

1 stop9h 51m

$179

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Mon 2/9

6:00 am-1:30 pm

1 stop7h 30m

Key West

Tue 2/17

1:01 pm-12:08 pm

1 stop23h 07m

$180

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sun 1/18

8:43 pm-12:26 pm

1 stop15h 43m

Key West

Thu 1/22

10:06 am-7:48 pm

1 stop9h 42m

$181

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sat 1/17

8:43 pm-9:26 am

1 stop12h 43m

Key West

Thu 1/22

10:06 am-7:48 pm

1 stop9h 42m

$182

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Tue 1/20

5:07 pm-10:09 am

1 stop17h 02m

Key West

Wed 1/28

10:49 am-10:49 am

1 stop24h 00m

$183

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from Philadelphia to Key West

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Key West?

In general, August is the cheapest month to fly from Philadelphia to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $468. If you are unable to visit Key West during the month of August, then departing from Philadelphia during the month July is also very affordable. Most momondo users find prices during this month for around $512.

What is the cheapest day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from Philadelphia is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $522. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Key West for around $633.

What is the cheapest time of day to depart on your flight to Key West?

According to our data, the cheapest time of day to fly to Key West is at noon. momondo users have found flights departing from Philadelphia to Key West at noon for as low as $496. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Key West are more costly in the morning, with an average ticket price of $574. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Philadelphia to Key West flight route?

Fly from Philadelphia to Key West for the best Philadelphia - Key West flight prices

How far in advance should I book a flight to Key West?

You are more likely to see cheaper flights to Key West from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $561 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from Philadelphia for as low as $477 on momondo.

What cabin class options are available on Philadelphia to Key West flights?

There are 3 cabin classes available to choose from on Philadelphia to Key West flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to Key West flights?

You could potentially save up to 53% on your flight if you consider stops on a Philadelphia to Key West flight.

How have Philadelphia to Key West flight prices changed over time?

As of December 2025, prices for Philadelphia to Key West flights are approximately 11% more expensive when compared to flights at the same time last year.

When to book flights from Philadelphia to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Key West according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Philadelphia to Key West (PHL to EYW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Key West

Best Price Found

$449

Fastest flight time

3h 07m

Direct flights

Every day

Airports in Key West

1 airport
The best one-way flight to Key West from Philadelphia in the past 72 hours is $449. The best round-trip flight deal from Philadelphia to Key West found on momondo in the last 72 hours is $443.
The fastest flight from Philadelphia to Key West takes 3h 07m
Direct flights go from Philadelphia to Key West every day.
There is 1 airport in Key West. From Philadelphia there are direct flights to Key West (EYW).
Search flight deals

  • How far is Philadelphia to Key West by plane?

    Philadelphia and Key West are 1131.0 mi apart from one another. 3h 07m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Philadelphia Airport to Key West Airport?

    Prices for flights from Philadelphia Airport to Key West Airport were last updated today.

  • How many operators does momondo search for flights from Philadelphia Airport to Key West Airport?

  • How old do you have to be to fly from Philadelphia Airport to Key West Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Key West Airport.

  • What documentation or ID do you need to fly to Key West Airport?

    The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Philadelphia to Key West?

  • What is the most popular airline from Philadelphia to Key West?

Best airlines flying from Philadelphia to Key West

Compare and see reviews for airlines that fly from Philadelphia to Key West with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $148Free CancellationRating
6.3
8,180 reviews
Search Spirit Airlines flights
DeltaPriceFrom $268Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $423Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
American AirlinesPriceFrom $423Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights

  • American Airlines Flights From Philadelphia to Key West

    The lowest priced American Airlines flight from Philadelphia to Key West from the last 72 hours was $423. Generally, American Airlines has 10 flights on this route every week with an average price of $572. American Airlines is rated 7.2/10 by our users.

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key
Little Torch Key

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Key West?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Philadelphia to Key West for you.

Can I find flights from Philadelphia to Key West with flexible booking policies on momondo?

momondo does allow users to show only those flights to Key West from Philadelphia which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Philadelphia to Key West?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Key West from Philadelphia.

I’m not ready to book a flight from Philadelphia to Key West right now. Can momondo alert me if prices change?

Price alerts on flights to Key West from Philadelphia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Key West trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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