HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key West

$86+ Cheap flights from Philadelphia to Key West (PHL - EYW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — EYW
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Key West with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Philadelphia to Key West are usually found in August or July, booked 71 days in advance, depart on a Tuesday or Saturday and return on a Thursday

Cheap flight deals from Philadelphia to Key West

Cheapest flights from Philadelphia to Key West
Explore the most affordable flight options available from Philadelphia to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1810:38 am
PHL
-
EYW
1 stop22h 28m
Multiple Airlines
Tue 3/2412:25 pm
EYW
-
PHL
1 stop20h 14m
Multiple Airlines
Deal found 3/9$308
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/155:05 am
PHL
-
EYW
1 stop6h 25m
Multiple Airlines
Tue 3/2412:25 pm
EYW
-
PHL
1 stop20h 14m
Multiple Airlines
Deal found 3/6$309
This Kiwi.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:30 am
PHL
-
EYW
1 stop5h 41m
Multiple Airlines
Thu 3/194:22 pm
EYW
-
PHL
2 stops7h 34m
Multiple Airlines
Deal found 3/7$310
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/59:38 pm
PHL
-
EYW
1 stop11h 31m
Multiple Airlines
Sun 4/1212:25 pm
EYW
-
PHL
2 stops44h 46m
Multiple Airlines
Deal found 3/5$311
This Kiwi.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:30 am
PHL
-
EYW
1 stop5h 41m
Multiple Airlines
Tue 3/171:01 pm
EYW
-
PHL
2 stops19h 38m
Multiple Airlines
Deal found 3/7$312
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:46 pm
PHL
-
EYW
1 stop15h 25m
Multiple Airlines
Tue 3/171:01 pm
EYW
-
PHL
2 stops19h 38m
Multiple Airlines
Deal found 3/9$313
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:12 pm
PHL
-
EYW
1 stop19h 23m
Spirit Airlines
Sun 4/1912:26 pm
EYW
-
PHL
1 stop21h 23m
Spirit Airlines
Deal found 3/9$314
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/226:10 am
PHL
-
EYW
2 stops26h 59m
Multiple Airlines
Wed 3/2511:51 am
EYW
-
PHL
1 stop11h 01m
Multiple Airlines
Deal found 3/6$315
This Mytrip deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:00 am
PHL
-
EYW
2 stops8h 37m
Spirit Airlines
Thu 4/1612:26 pm
EYW
-
PHL
2 stops9h 31m
Spirit Airlines
Deal found 3/5$317
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/21:45 pm
PHL
-
EYW
2 stops24h 18m
Multiple Airlines
Thu 4/912:25 pm
EYW
-
PHL
1 stop12h 57m
Multiple Airlines
Deal found 3/5$318
This Mytrip deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:18 am
PHL
-
EYW
1 stop5h 19m
Spirit Airlines
Mon 4/202:30 pm
EYW
-
PHL
3 stops29h 21m
Spirit Airlines
Deal found 3/6$319

Find flight deals from Philadelphia to Key West

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Key West (EYW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$308
(Mytrip)

One-way from

$86
(Kiwi.com)

Popular in

April

Cheapest in

August

Average price

$628

Good round-trip deal

$461 or less

Good one-way deal

$434 or less
Provider with most accurate pricing for Philadelphia-Key West flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Key West flights.
Search Deals
From Philadelphia to Key West
Search Deals
One-way flight from Philadelphia to Key West
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Philadelphia to Key West.
Search Deals
Price to beat on a one-way flight from Philadelphia to Key West.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated March 10, 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

Cheapest round-trip

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Mon 4/6

7:45 pm-5:39 pm

2 stops21h 54m

Key West

Fri 4/10

4:38 pm-2:16 pm

2 stops21h 38m

$692

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Thu 4/30

10:38 am-3:07 pm

2 stops28h 29m

Key West

Tue 5/5

4:47 pm-2:16 pm

2 stops21h 29m

$710
Quickest round-trip

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sat 3/14

5:40 am-10:48 am

1 stop5h 08m

Key West

Fri 3/20

6:25 pm-12:57 am

1 stop6h 32m

$718

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sat 5/16

7:45 pm-3:07 pm

2 stops19h 22m

Key West

Tue 5/19

2:49 pm-2:20 pm

2 stops23h 31m

$738

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sat 5/2

6:10 am-3:07 pm

1 stop8h 57m

Key West

Sat 5/9

2:49 pm-2:20 pm

2 stops23h 31m

$785

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Fri 4/24

6:17 am-4:42 pm

2 stops10h 25m

Key West

Wed 4/29

3:52 pm-12:59 am

1 stop9h 07m

$789

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sat 4/11

7:45 pm-4:42 pm

1 stop20h 57m

Key West

Sat 4/18

3:52 pm-2:10 pm

2 stops22h 18m

$790

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Thu 4/30

10:00 am-3:07 pm

1 stop29h 07m

Key West

Sun 5/3

4:47 pm-10:34 pm

1 stop29h 47m

$791

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Fri 5/15

6:10 am-4:02 pm

2 stops33h 52m

Key West

Mon 5/18

4:47 pm-2:16 pm

2 stops21h 29m

$841

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Thu 3/19

8:00 am-2:55 pm

1 stop6h 55m

Key West

Mon 3/23

5:30 pm-2:17 pm

2 stops20h 47m

$887

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Philadelphia to Key West

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Key West in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Key West flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Key West flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Key West flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Key West flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Key West

How far ahead should I book a flight from Philadelphia to Key West?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Key West. Price data was last updated on March 6, 2026.

The price you pay for your flight from Philadelphia to Key West may vary depending on when you book. For the best chance of a lower fare, look to book 71 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Philadelphia to Key West?

Currently, May is the cheapest month in which you can book a flight from Philadelphia to Key West (average of $131). Flying from Philadelphia to Key West in August is currently the most expensive (average of $312). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHL to EYW?

Find hourly flight availability from Philadelphia to Key West. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to Key West as you normally would.

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key West. Reviews last updated March 10, 2026.
Peruse reviews from past customers who have flown with Delta,American Airlines, andSpirit Airlines from Philadelphia to Key West to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,276 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Delta
7.9
Good
8,276 reviews
Delta
7.9
Good
8,276 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
American Airlines
7.1
Good
11,415 reviews
Delta
7.9
Good
8,276 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Spirit Airlines
6.3
Okay
8,513 reviews
Delta
7.9
Good
8,276 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Philadelphia to Key West?

    If you book a flight from Philadelphia to Key West, you will be flying from Philadelphia to Key West. Flights to Key West (EYW) from Philadelphia (PHL) take 3h 10m for a nonstop flight. There is 1 flight from Philadelphia to Key West per day from 3 airlines.

  • How popular is this Philadelphia to Key West flight route?

    The Philadelphia to Key West flight path was viewed by 3 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Philadelphia to Key West?

    Departing from Philadelphia to Key West will take you 5h 08m. There are 1123 mi between Philadelphia and Key West. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Philadelphia to Key West round-trip?

    Cheapflights users have booked flights from Philadelphia to Key West round-trip from $157. Other airlines that can offer you cheap pricing are Delta, from $344, and American Airlines, from $423. Spirit Airlines is 72% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Philadelphia to Key West?

    The top 3 most reliable airlines when flying from Philadelphia to Key West are Alaska Airlines (86%), Republic Airways (79%) and American Airlines (70%).

  • What are the cheapest flights from Philadelphia to Key West?

    On average you can expect to pay $527 for a flight from Philadelphia to Key West. The cheapest flight overall is $265 while the most popular route, (Philadelphia - Key West) is currently priced at $170.

  • Can I find deals for flights from Philadelphia to Key West that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Key West?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Key West.

  • Can I find deals for business class flights from Philadelphia to Key West?

    Yes. Cheapflights offers flight deals from Philadelphia to Key West by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to Key West?

    Currently, May is the cheapest month in which you can book a flight from Philadelphia to Key West (average of $131). Flying from Philadelphia to Key West in August is currently the most expensive (average of $312). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Philadelphia to Key West

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Miami flights
Newark to Fort Lauderdale flights
John F Kennedy Intl to Fort Lauderdale flights
LaGuardia to Fort Lauderdale flights
Newark to Miami flights
LaGuardia to Miami flights
John F Kennedy Intl to Orlando flights
Newark to West Palm Beach flights
Newark to Orlando flights
LaGuardia to Orlando flights
John F Kennedy Intl to Tampa flights
John F Kennedy Intl to West Palm Beach flights
Dulles Intl to Miami flights
Newark to Tampa flights
Philadelphia to Orlando flights
Dulles Intl to Orlando flights
LaGuardia to Tampa flights
Reagan-National to Miami flights
Philadelphia to Fort Lauderdale flights
Philadelphia to Miami flights
Newark to Fort Myers flights
LaGuardia to West Palm Beach flights
Philadelphia to Tampa flights
Dulles Intl to Fort Lauderdale flights
Reagan-National to Fort Lauderdale flights
John F Kennedy Intl to Fort Myers flights
Reagan-National to Orlando flights
Dulles Intl to Tampa flights
John F Kennedy Intl to Sarasota flights
Reagan-National to Tampa flights
LaGuardia to Fort Myers flights
Newark to Sarasota flights
Pittsburgh to Orlando flights
John F Kennedy Intl to Jacksonville flights
LaGuardia to Sarasota flights
Newark to Jacksonville flights
Reagan-National to West Palm Beach flights
Philadelphia to West Palm Beach flights
Newark to Key West flights
Philadelphia to Fort Myers flights
Dulles Intl to West Palm Beach flights
LaGuardia to Jacksonville flights
Pittsburgh to Tampa flights
Pittsburgh to Fort Lauderdale flights
Philadelphia to Jacksonville flights
Dulles Intl to Fort Myers flights
John F Kennedy Intl to Key West flights
Pittsburgh to Miami flights
Dulles Intl to Sarasota flights

Top 3 airlines flying from Philadelphia to Key West

Discover the top 3 airlines that operate flights from Philadelphia to Key West. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$157Average$229FlexibilityNo cancel feeOn-time65%
DeltaCheapest$344Average$558FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$423Average$583FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.