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Cheap flights from Philadelphia to Key West from $108

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 11/9. 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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Find the cheapest flights from Philadelphia to Key West

Cheap round-trip flights

Multiple Airlines Logo
6:12 pm - 8:15 amPHL-EYW
14h 03m1 stop
Multiple Airlines Logo
8:55 am - 7:29 amEYW-PHL
22h 34m1 stop
$207Multiple Airlines
Find Deal
Sun, Dec 7 - Thu, Dec 11
Multiple Airlines Logo
5:20 am - 2:40 pmPHL-EYW
9h 20m1 stop
Multiple Airlines Logo
8:55 am - 5:58 pmEYW-PHL
9h 03m1 stop
$213Multiple Airlines
Find Deal
Sun, Oct 12 - Fri, Oct 17
Multiple Airlines Logo
6:01 am - 2:56 pmPHL-EYW
8h 55m1 stop
Multiple Airlines Logo
4:21 pm - 12:40 amEYW-PHL
8h 19m1 stop
$227Multiple Airlines
Find Deal
Sun, Feb 8 - Thu, Feb 12
Multiple Airlines Logo
10:46 am - 8:15 amPHL-EYW
21h 29m1 stop
Multiple Airlines Logo
8:55 am - 7:29 amEYW-PHL
22h 34m1 stop
$228Multiple Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 11
Multiple Airlines Logo
8:00 pm - 9:06 amPHL-EYW
13h 06m1 stop
Multiple Airlines Logo
9:46 am - 3:22 pmEYW-PHL
5h 36m1 stop
$233Multiple Airlines
Find Deal
Wed, Jan 7 - Thu, Jan 15
Multiple Airlines Logo
5:35 pm - 9:12 amPHL-EYW
15h 37m1 stop
Multiple Airlines Logo
8:55 am - 1:07 amEYW-PHL
16h 12m1 stop
$234Multiple Airlines
Find Deal
Tue, Oct 7 - Fri, Oct 10
Multiple Airlines Logo
4:00 pm - 8:15 amPHL-EYW
16h 15m1 stop
Multiple Airlines Logo
10:47 am - 6:38 pmEYW-PHL
7h 51m1 stop
$236Multiple Airlines
Find Deal
Sat, Oct 25 - Sat, Nov 1
Spirit Airlines Logo
5:15 am - 1:30 pmPHL-EYW
8h 15m1 stop
Spirit Airlines Logo
2:25 pm - 12:32 amEYW-PHL
10h 07m1 stop
$245Spirit Airlines
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Fri, Dec 12 - Mon, Dec 15
Delta Logo
5:30 am - 1:02 pmPHL-EYW
7h 32m1 stop
Delta Logo
6:17 pm - 12:52 amEYW-PHL
6h 35m1 stop
$257Delta
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Mon, Nov 3 - Wed, Nov 5
Delta Logo
5:55 am - 1:12 pmPHL-EYW
7h 17m1 stop
Delta Logo
6:00 pm - 12:22 amEYW-PHL
6h 22m1 stop
$277Delta
Find Deal
Sun, Feb 15 - Thu, Feb 19

American Airlines flights from Philadelphia to Key West

Our best American Airlines deals on Philadelphia to Key West flight tickets
American Airlines
Sep 17
PHL10:35 amPhiladelphia
3h 25m
EYW2:00 pmKey West
Sep 20
EYW2:31 pmKey West
3h 12m
PHL5:43 pmPhiladelphia
$549
Find similar
American Airlines
Sep 17
PHL8:09 amPhiladelphia
7h 05m
1 stop
EYW3:14 pmKey West
Sep 20
EYW2:31 pmKey West
3h 12m
PHL5:43 pmPhiladelphia
$559
Find similar
American Airlines
Sep 20
PHL1:55 pmPhiladelphia
5h 04m
1 stop
EYW6:59 pmKey West
Sep 27
EYW2:31 pmKey West
3h 12m
PHL5:43 pmPhiladelphia
$590
Find similar

Delta flights from Philadelphia to Key West

Our best Delta deals on Philadelphia to Key West flight tickets
Delta
Nov 3
PHL5:30 amPhiladelphia
7h 32m
1 stop
EYW1:02 pmKey West
Nov 5
EYW6:17 pmKey West
6h 35m
1 stop
PHL12:52 amPhiladelphia
$257
Find similar
Delta
Feb 15
PHL5:55 amPhiladelphia
7h 17m
1 stop
EYW1:12 pmKey West
Feb 19
EYW6:00 pmKey West
6h 22m
1 stop
PHL12:22 amPhiladelphia
$277
Find similar
Delta
Sep 17
PHL2:40 pmPhiladelphia
5h 27m
1 stop
EYW8:07 pmKey West
Sep 22
EYW6:10 pmKey West
6h 44m
1 stop
PHL12:54 amPhiladelphia
$517
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 September 16, 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

Sun 12/7

6:12 pm-8:15 am

1 stop14h 03m

Key West

Thu 12/11

8:55 am-7:29 am

1 stop22h 34m

$207

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sun 10/12

5:20 am-2:40 pm

1 stop9h 20m

Key West

Fri 10/17

8:55 am-5:58 pm

1 stop9h 03m

$213

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sun 2/8

6:01 am-2:56 pm

1 stop8h 55m

Key West

Thu 2/12

4:21 pm-12:40 am

1 stop8h 19m

$227

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Wed 12/3

10:46 am-8:15 am

1 stop21h 29m

Key West

Thu 12/11

8:55 am-7:29 am

1 stop22h 34m

$228

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Wed 1/7

8:00 pm-9:06 am

1 stop13h 06m

Key West

Thu 1/15

9:46 am-3:22 pm

1 stop5h 36m

$233

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Tue 10/7

5:35 pm-9:12 am

1 stop15h 37m

Key West

Fri 10/10

8:55 am-1:07 am

1 stop16h 12m

$234

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sat 10/25

4:00 pm-8:15 am

1 stop16h 15m

Key West

Sat 11/1

10:47 am-6:38 pm

1 stop7h 51m

$236

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Fri 12/12

5:15 am-1:30 pm

1 stop8h 15m

Key West

Mon 12/15

2:25 pm-12:32 am

1 stop10h 07m

$245

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Mon 11/3

5:30 am-1:02 pm

1 stop7h 32m

Key West

Wed 11/5

6:17 pm-12:52 am

1 stop6h 35m

$257

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sun 2/15

5:55 am-1:12 pm

1 stop7h 17m

Key West

Thu 2/19

6:00 pm-12:22 am

1 stop6h 22m

$277

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 $503.

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 $500. 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 $611.

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 $551. 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 $548 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 $487 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 37% 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 September 2025, prices for Philadelphia to Key West flights are approximately 199% 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

$504

Fastest flight time

3h 12m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in Key West

1 airport
The best flight deal from Philadelphia to Key West found on momondo in the last 72 hours is $504
The fastest flight from Philadelphia to Key West takes 3h 12m
Direct flights go from Philadelphia to Key West on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Key West: 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. 5h 26m 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
DeltaPriceFrom $268Free CancellationRating
7.9
7,957 reviews
Search Delta flights
United AirlinesPriceFrom $390Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
American AirlinesPriceFrom $417Free CancellationRating
7.2
10,000 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 $417. Generally, American Airlines has 6 flights on this route every week with an average price of $559. 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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