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Cheap flights from Philadelphia to Key West from $89

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 3/8. 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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Find the cheapest flights from Philadelphia to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:32 pm - 10:21 am
PHL
-
EYW
18h 49m
1 stop
Multiple Airlines Logo
1:01 pm - 10:39 am
EYW
-
PHL
21h 38m
1 stop
$203Multiple Airlines
Sat, Feb 21 - Tue, Feb 24
Multiple Airlines Logo
5:28 pm - 11:17 am
PHL
-
EYW
17h 49m
1 stop
Multiple Airlines Logo
2:25 pm - 8:44 am
EYW
-
PHL
18h 19m
1 stop
$205Multiple Airlines
Wed, May 6 - Mon, May 11
Multiple Airlines Logo
5:15 am - 1:30 pm
PHL
-
EYW
8h 15m
1 stop
Multiple Airlines Logo
12:25 pm - 10:50 pm
EYW
-
PHL
10h 25m
1 stop
$206Multiple Airlines
Mon, Mar 9 - Tue, Mar 17
Multiple Airlines Logo
10:38 pm - 12:26 pm
PHL
-
EYW
13h 48m
1 stop
Multiple Airlines Logo
11:01 am - 12:47 am
EYW
-
PHL
13h 46m
1 stop
$207Multiple Airlines
Sun, Mar 8 - Thu, Mar 12
Spirit Airlines Logo
6:08 pm - 11:30 am
PHL
-
EYW
17h 22m
1 stop
Spirit Airlines Logo
12:25 pm - 7:57 pm
EYW
-
PHL
7h 32m
1 stop
$209Spirit Airlines
Sat, Apr 11 - Tue, Apr 14
Multiple Airlines Logo
10:18 pm - 9:06 am
PHL
-
EYW
10h 48m
1 stop
Multiple Airlines Logo
11:51 am - 6:55 pm
EYW
-
PHL
7h 04m
1 stop
$210Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
7:46 pm - 9:06 am
PHL
-
EYW
13h 20m
1 stop
Multiple Airlines Logo
2:25 pm - 9:53 am
EYW
-
PHL
19h 28m
1 stop
$211Multiple Airlines
Sat, Feb 21 - Mon, Mar 2
Multiple Airlines Logo
5:32 pm - 11:30 am
PHL
-
EYW
17h 58m
1 stop
Multiple Airlines Logo
2:35 pm - 8:39 am
EYW
-
PHL
18h 04m
1 stop
$213Multiple Airlines
Wed, Apr 8 - Mon, Apr 13
Multiple Airlines Logo
3:45 pm - 9:06 am
PHL
-
EYW
17h 21m
1 stop
Multiple Airlines Logo
11:51 am - 10:34 pm
EYW
-
PHL
10h 43m
2 stops
$214Multiple Airlines
Wed, Mar 4 - Wed, Mar 11
Spirit Airlines Logo
5:57 pm - 11:17 am
PHL
-
EYW
17h 20m
1 stop
Spirit Airlines Logo
12:15 pm - 8:44 am
EYW
-
PHL
20h 29m
1 stop
$215Spirit Airlines
Wed, Apr 15 - Sun, Apr 19

Spirit Airlines flights from Philadelphia to Key West

Our best Spirit Airlines deals on Philadelphia to Key West flight tickets
Spirit Airlines
Apr 11
PHL6:08 pmPhiladelphia
17h 22m
1 stop
EYW11:30 amKey West
Apr 14
EYW12:25 pmKey West
7h 32m
1 stop
PHL7:57 pmPhiladelphia
$209
Spirit Airlines
Apr 15
PHL5:57 pmPhiladelphia
17h 20m
1 stop
EYW11:17 amKey West
Apr 19
EYW12:15 pmKey West
20h 29m
1 stop
PHL8:44 amPhiladelphia
$215
Spirit Airlines
Mar 15
PHL6:48 amPhiladelphia
4h 42m
1 stop
EYW11:30 amKey West
Mar 20
EYW2:35 pmKey West
5h 22m
1 stop
PHL7:57 pmPhiladelphia
$236

American Airlines flights from Philadelphia to Key West

Our best American Airlines deals on Philadelphia to Key West flight tickets
American Airlines
Feb 18
PHL1:37 pmPhiladelphia
5h 38m
1 stop
EYW7:15 pmKey West
Feb 25
EYW5:04 pmKey West
3h 03m
PHL8:07 pmPhiladelphia
$455
American Airlines
Feb 18
PHL10:25 amPhiladelphia
6h 24m
1 stop
EYW4:49 pmKey West
Feb 26
EYW5:04 pmKey West
3h 03m
PHL8:07 pmPhiladelphia
$481
American Airlines
Feb 18
PHL3:37 pmPhiladelphia
6h 45m
1 stop
EYW10:22 pmKey West
Feb 21
EYW12:09 pmKey West
5h 35m
1 stop
PHL5:44 pmPhiladelphia
$485

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 February 8, 2026.
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

Sat 2/21

3:32 pm-10:21 am

1 stop18h 49m

Key West

Tue 2/24

1:01 pm-10:39 am

1 stop21h 38m

$203

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Wed 5/6

5:28 pm-11:17 am

1 stop17h 49m

Key West

Mon 5/11

2:25 pm-8:44 am

1 stop18h 19m

$205

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Mon 3/9

5:15 am-1:30 pm

1 stop8h 15m

Key West

Tue 3/17

12:25 pm-10:50 pm

1 stop10h 25m

$206

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sun 3/8

10:38 pm-12:26 pm

1 stop13h 48m

Key West

Thu 3/12

11:01 am-12:47 am

1 stop13h 46m

$207

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sat 4/11

6:08 pm-11:30 am

1 stop17h 22m

Key West

Tue 4/14

12:25 pm-7:57 pm

1 stop7h 32m

$209

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Wed 3/18

10:18 pm-9:06 am

1 stop10h 48m

Key West

Wed 3/25

11:51 am-6:55 pm

1 stop7h 04m

$210

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sat 2/21

7:46 pm-9:06 am

1 stop13h 20m

Key West

Mon 3/2

2:25 pm-9:53 am

1 stop19h 28m

$211

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Wed 4/8

5:32 pm-11:30 am

1 stop17h 58m

Key West

Mon 4/13

2:35 pm-8:39 am

1 stop18h 04m

$213

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Wed 3/4

3:45 pm-9:06 am

1 stop17h 21m

Key West

Wed 3/11

11:51 am-10:34 pm

2 stops10h 43m

$214

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Wed 4/15

5:57 pm-11:17 am

1 stop17h 20m

Key West

Sun 4/19

12:15 pm-8:44 am

1 stop20h 29m

$215

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 $463. 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 $514.

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 $549. 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 $646.

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 $562 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 $459 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 55% 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 February 2026, prices for Philadelphia to Key West flights are approximately 23% 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

$270

Fastest flight time

3h 12m

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 $270. The best round-trip flight deal from Philadelphia to Key West found on momondo in the last 72 hours is $502.
The fastest flight from Philadelphia to Key West takes 3h 12m
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 12m 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 $155Free CancellationRating
6.3
8,430 reviews
Search Spirit Airlines flights
DeltaPriceFrom $307Free CancellationRating
7.9
8,172 reviews
Search Delta flights
American AirlinesPriceFrom $423Free CancellationRating
7.2
11,249 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 8 flights on this route every week with an average price of $584. 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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