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Key Largo

$103+ 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — MIA
Jan 23 — Jan 301
Fri 1/23
Fri 1/30
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Key Largo are usually found in October or April, booked 34 days in advance, depart on a Saturday or Wednesday and return on a Friday

Cheap 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 December 24, 2025.

This CheapOair deal was found by Cheapflights users on 12/24. 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 12/319:58 amPHX - MIA
1 stop17h 37mFrontier
Fri 1/26:10 amMIA - PHX
1 stop12h 55mFrontier
Deal found 12/24$238
This CheapOair deal was found by Cheapflights users on 12/23. 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 12/249:58 amPHX - MIA
1 stop17h 37mFrontier
Wed 12/316:00 amMIA - PHX
1 stop29h 32mFrontier
Deal found 12/23$254
This Kiwi.com deal was found by Cheapflights users on 12/23. 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 12/319:58 amPHX - MIA
1 stop17h 37mFrontier
Mon 1/55:30 amMIA - PHX
1 stop11h 48mFrontier
Deal found 12/23$296
This Expedia deal was found by Cheapflights users on 12/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:43 pmPHX - MIA
1 stop11h 17mFrontier
Thu 1/17:05 amMIA - PHX
1 stop14h 11mFrontier
Deal found 12/22$304
This Expedia deal was found by Cheapflights users on 12/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:58 amPHX - MIA
1 stop17h 37mFrontier
Fri 1/26:10 amMIA - PHX
1 stop12h 55mFrontier
Deal found 12/22$308

Find 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 December 24, 2025.

Round-trip from

$214
(eDestinos)

One-way from

$103
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$451
From Phoenix Sky Harbor Intl to Key Largo
Search Deals
One-way flight from Phoenix Sky Harbor Intl to Key Largo
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 24, 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

Sun 1/11

12:55 pm-10:10 pm

1 stop7h 15m

Miami

Fri 1/16

1:50 pm-8:05 pm

1 stop8h 15m

$227

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Sat 1/31

11:05 am-9:30 pm

1 stop8h 25m

Miami

Sat 2/28

7:45 am-4:05 pm

1 stop10h 20m

$232

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Fri 2/6

8:30 pm-6:37 am

1 stop8h 07m

Miami

Tue 2/10

5:30 pm-11:46 pm

1 stop8h 16m

$257

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Tue 1/20

11:40 am-10:00 pm

2 stops8h 20m

Miami

Sat 1/24

7:50 am-4:20 pm

2 stops10h 30m

$292

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Thu 1/29

9:40 am-8:05 pm

2 stops8h 25m

Miami

Sun 2/1

6:30 am-3:25 pm

2 stops10h 55m

$302

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Thu 1/15

11:30 am-9:54 pm

1 stop8h 24m

Miami

Wed 1/21

12:00 pm-10:40 pm

2 stops12h 40m

$322

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Thu 1/22

10:00 am-7:51 pm

1 stop7h 51m

Miami

Sat 1/31

6:20 am-3:25 pm

2 stops11h 05m

$322

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Sat 1/17

10:00 am-10:45 pm

2 stops10h 45m

Miami

Fri 1/23

6:20 am-3:25 pm

2 stops11h 05m

$327

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Thu 1/22

10:00 am-9:54 pm

2 stops9h 54m

Miami

Mon 1/26

6:20 am-6:06 pm

2 stops13h 46m

$327

PhoenixMiami

PHX - MIA

PHXMIA

Phoenix Sky Harbor Intl

Sat 1/17

10:00 am-10:45 pm

2 stops10h 45m

Miami

Wed 1/21

9:05 am-7:45 pm

2 stops12h 40m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 22 results
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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 December 19, 2025.

Booking 34 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, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Key Largo (average of $65). Flying from Phoenix Sky Harbor Intl Airport to Key Largo in May is currently the most expensive (average of $198). 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 December 24, 2025.

It’s optimal to fly from Phoenix Sky Harbor Intl Airport to Key Largo in the afternoon. By choosing this option you can save up to 42% on the cost of your flight, compared to a flight in the evening.

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 Thursday 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 December 24, 2025.

The most flights from PHX to KE9 are scheduled on a Monday (22 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (12 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 December 24, 2025.
Read through reviews of airlines operating flights from Phoenix Sky Harbor Intl Airport to Key Largo, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,257 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,257 reviews
Southwest
8.0
Very good
4,257 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,011 reviews
Southwest
8.0
Very good
4,257 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,116 reviews
Southwest
8.0
Very good
4,257 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,056 reviews
Southwest
8.0
Very good
4,257 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,069 reviews
Southwest
8.0
Very good
4,257 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Key Largo?

    Departing from Phoenix Sky Harbor Intl Airport to Key Largo will take you 7h 15m. Phoenix Sky Harbor Intl Airport and Key Largo are separated by a distance of 1967 mi. This flight may include one or multiple stops.

  • 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $43. Frontier flights start at $71 while deals on JetBlue start at $81 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: Finnair (100%), Iberia (88%), GOL (81%).

  • 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 $1,093, our data shows the cheapest flight currently is $88. When looking at the most popular route, (Phoenix Sky Harbor Intl - Miami), you can expect to pay $122 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, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Key Largo (average of $65). Flying from Phoenix Sky Harbor Intl Airport to Key Largo in May is currently the most expensive (average of $198). 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 8 airlines flying from Sky Harbor Intl to Key Largo

Discover the top 8 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 December 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$67Average$205FlexibilityNo cancel feeOn-time65%
FrontierCheapest$130Average$248FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$178Average$375FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$181Average$335FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$225Average$374FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$226Average$390FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$230Average$402FlexibilityNo cancel feeOn-time71%
DeltaCheapest$238Average$364FlexibilityNo cancel feeOn-timeN/A

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