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Key Largo

$117+ Cheap flights from Sky Harbor Intl (PHX) to Key Largo, FL

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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — MIA
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Key Largo are usually found in September or February, booked 41 days in advance, depart on a Saturday or Thursday and return on a Wednesday

Cheap flight deals from Sky Harbor Intl to Key Largo

Keep the following information in mind while searching for Sky Harbor Intl to Key Largo flight deals. Data was last updated July 29, 2025.

Round-trip from

$201
(American Airlines)

One-way from

$117
(Trip.com)

Popular in

March

Cheapest in

September

Average price

$395
From Phoenix Sky Harbor Intl to Key Largo
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One-way flight from Phoenix Sky Harbor Intl to Key Largo
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Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Sky Harbor Intl to Key Largo

Cheapest flights from Sky Harbor Intl to Key Largo
Explore the most affordable flight options available from Sky Harbor Intl to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:51 pmPHX - MIA
Nonstop4h 29mAmerican Airlines
Tue 9/25:51 pmMIA - PHX
Nonstop4h 37mAmerican Airlines
Deal found 7/29$201
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/510:59 pmPHX - MIA
2 stops15h 43mSpirit Airlines
Mon 9/84:53 pmMIA - PHX
1 stop8h 11mSpirit Airlines
Deal found 7/28$204
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/612:39 pmPHX - MIA
1 stop9h 05mFrontier
Sat 9/136:45 amMIA - PHX
1 stop18h 08mFrontier
Deal found 7/28$206
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/812:00 pmPHX - MIA
1 stop26h 45mAlaska Airlines
Fri 9/126:45 pmMIA - PHX
1 stop19h 15mAlaska Airlines
Deal found 7/26$212
This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1712:39 pmPHX - MIA
1 stop9h 05mMultiple Airlines
Thu 9/184:53 pmMIA - PHX
1 stop8h 11mMultiple Airlines
Deal found 7/28$217
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/84:11 pmPHX - MIA
1 stop6h 18mDelta
Fri 11/148:00 amMIA - PHX
1 stop10h 27mDelta
Deal found 7/29$256

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl to Key Largo 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 July 29, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Key Largo that are best for you.

Fly from

Sky Harbor Intl

Fly to

Key Largo

Route

Depart

Return

Price

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Wed 8/27

12:51 pm-8:20 pm

Nonstop4h 29m

Miami

Tue 9/2

5:51 pm-7:28 pm

Nonstop4h 37m

$201

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Fri 9/5

10:59 pm-5:42 pm

2 stops15h 43m

Miami

Mon 9/8

4:53 pm-10:04 pm

1 stop8h 11m

$204

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Sat 9/6

12:39 pm-12:44 am

1 stop9h 05m

Miami

Sat 9/13

6:45 am-9:53 pm

1 stop18h 08m

$206

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Mon 9/8

12:00 pm-5:45 pm

1 stop26h 45m

Miami

Fri 9/12

6:45 pm-11:00 am

1 stop19h 15m

$212

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Wed 9/17

12:39 pm-12:44 am

1 stop9h 05m

Miami

Thu 9/18

4:53 pm-10:04 pm

1 stop8h 11m

$217

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Sat 11/8

4:11 pm-12:29 am

1 stop6h 18m

Miami

Fri 11/14

8:00 am-4:27 pm

1 stop10h 27m

$256

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Fri 9/19

7:25 am-10:40 pm

1 stop12h 15m

$117

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Sat 9/20

12:39 pm-12:44 am

1 stop9h 05m

$119

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Mon 9/8

10:59 pm-6:04 pm

2 stops16h 05m

$122

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Tue 9/16

9:06 am-4:50 pm

Nonstop4h 44m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 12 results
1
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Best time to book a flight from Sky Harbor Intl to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Key Largo

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Key Largo. Price data was last updated on July 25, 2025.

Booking 41 days in advance of your planned departure date is, on average, the best time to get cheap flights from Phoenix Sky Harbor Intl Airport to Key Largo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Key Largo (average of $232). Flying from Phoenix Sky Harbor Intl Airport to Key Largo in March is currently the most expensive (average of $289). 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 PHX to KE9?

Find hourly flight availability from Sky Harbor Intl to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

When flying from Phoenix Sky Harbor Intl Airport to Key Largo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Key Largo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Key Largo flight should consider departing on Saturday afternoons when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Phoenix Sky Harbor Intl Airport to Key Largo

Explore weekly flight availability from Sky Harbor Intl to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 29, 2025.

The most flights from PHX to KE9 are scheduled on a Tuesday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Largo. Reviews last updated July 29, 2025.
Read through reviews of airlines operating flights from Phoenix Sky Harbor Intl Airport to Key Largo, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

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

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Key Largo one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $119. Spirit Airlines flights start at $122 while deals on American Airlines start at $159 one-way.

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Key Largo?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Phoenix Sky Harbor Intl Airport to Key Largo on time: Royal Air Maroc (90%), Qatar Airways (90%), Iberia (88%).

  • What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Key Largo?

    While on average a flight from Phoenix Sky Harbor Intl Airport to Key Largo is generally $1,498, our data shows the cheapest flight currently is $229. When looking at the most popular route, (Phoenix Sky Harbor Intl - Miami), you can expect to pay $186 for that flight.

  • Can I find deals for flights from Sky Harbor Intl to Key Largo that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Key Largo?

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

  • Can I find deals for business class flights from Sky Harbor Intl to Key Largo?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Key Largo 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 Phoenix Sky Harbor Intl Airport to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Key Largo (average of $232). Flying from Phoenix Sky Harbor Intl Airport to Key Largo in March is currently the most expensive (average of $289). 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

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Top 9 airlines flying from Sky Harbor Intl to Key Largo

Discover the top 9 airlines that operate flights from Sky Harbor Intl to Key Largo. 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$102Average$199FlexibilityNo cancel feeOn-time65%
FrontierCheapest$128Average$226FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$196Average$393FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$204Average$389FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$385FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$226Average$397FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$238Average$423FlexibilityNo cancel feeOn-time63%
DeltaCheapest$251Average$365FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$325Average$355FlexibilityNo cancel feeOn-time83%

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