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Key Largo

$100+ Cheap flights from Portland, ME (PWM) 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — MIA
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Key Largo are usually found in September or August, booked 27 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Portland to Key Largo

Keep the following information in mind while searching for Portland to Key Largo flight deals. Data was last updated March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$222
(United Airlines)

One-way from

$100
(American Airlines)

Popular in

April

Cheapest in

September

Average price

$478
Provider with most accurate pricing for Portland-Miami flight deals.
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Provider most trusted by Cheapflights users for Portland-Miami flights.
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From Portland to Key Largo
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One-way flight from Portland to Key Largo
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Portland to Key Largo

Cheapest flights from Portland to Key Largo
Explore the most affordable flight options available from Portland to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

This United Airlines deal was found by Cheapflights users on 3/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/156:10 amPWM - MIA
1 stop8h 12mUnited Airlines
Tue 6/177:06 amMIA - PWM
2 stops10h 37mUnited Airlines
Deal found 3/23$222
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/95:30 amPWM - MIA
1 stop8h 11mDelta
Mon 4/145:44 pmMIA - PWM
1 stop6h 58mDelta
Deal found 3/24$227
This American Airlines deal was found by Cheapflights users on 3/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/35:18 pmPWM - MIA
2 stops7h 07mAmerican Airlines
Tue 5/138:50 pmMIA - PWM
1 stop13h 30mAmerican Airlines
Deal found 3/23$236
This Southwest deal was found by Cheapflights users on 3/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/75:30 pmPWM - MIA
1 stop5h 25mSouthwest
Wed 4/97:15 amMIA - PWM
1 stop8h 05mSouthwest
Deal found 3/23$237
This JetBlue deal was found by Cheapflights users on 3/23. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/65:35 pmPWM - MIA
1 stop6h 01mJetBlue
Wed 4/95:55 pmMIA - PWM
1 stop5h 33mJetBlue
Deal found 3/23$239
This Mytrip deal was found by Cheapflights users on 3/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1512:40 pmPWM - MIA
2 stops30h 13mMultiple Airlines
Thu 6/199:10 pmMIA - PWM
3 stops38h 47mMultiple Airlines
Deal found 3/23$697

Cheapflights Fare Finder

Customize your flight search to find flights from Portland 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 March 25, 2025.
Use the filters below to find and compare flights from Portland to Key Largo that are best for you.

Fly from

Portland

Fly to

Key Largo

Route

Depart

Return

Price

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sun 6/15

6:10 am-2:22 pm

1 stop8h 12m

Miami

Tue 6/17

7:06 am-5:43 pm

2 stops10h 37m

$222

PortlandMiami

PWM - MIA

PWMMIA

Portland

Wed 4/9

5:30 am-1:41 pm

1 stop8h 11m

Miami

Mon 4/14

5:44 pm-12:42 am

1 stop6h 58m

$227

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 5/3

5:18 pm-12:25 am

2 stops7h 07m

Miami

Tue 5/13

8:50 pm-10:20 am

1 stop13h 30m

$236

PortlandMiami

PWM - MIA

PWMMIA

Portland

Mon 4/7

5:30 pm-10:55 pm

1 stop5h 25m

Miami

Wed 4/9

7:15 am-3:20 pm

1 stop8h 05m

$237

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sun 4/6

5:35 pm-11:36 pm

1 stop6h 01m

Miami

Wed 4/9

5:55 pm-11:28 pm

1 stop5h 33m

$239

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sun 6/15

12:40 pm-6:53 pm

2 stops30h 13m

Miami

Thu 6/19

9:10 pm-11:57 am

3 stops38h 47m

$697

PortlandMiami

PWM - MIA

PWMMIA

Portland

Tue 5/13

6:00 am-1:38 pm

1 stop7h 38m

$100

PortlandMiami

PWM - MIA

PWMMIA

Portland

Tue 4/22

5:35 pm-11:55 pm

1 stop6h 20m

$108

PortlandMiami

PWM - MIA

PWMMIA

Portland

Fri 6/6

2:30 pm-11:19 pm

1 stop8h 49m

$109

PortlandMiami

PWM - MIA

PWMMIA

Portland

Tue 4/8

6:15 am-5:25 pm

2 stops11h 10m

$124

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Portland 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 Portland to Key Largo

How far ahead should I book a flight from Portland, Maine to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Key Largo. Price data was last updated on March 21, 2025.

Booking 27 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland, Maine 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 Portland, Maine to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Key Largo (average of $229). Flying from Portland, Maine 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 PWM to KE9?

Find hourly flight availability from Portland 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 March 25, 2025.

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

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

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 March 25, 2025.
Get a feel of what it's like to fly with Southwest, Delta and United Airlines from Portland to Key Largo by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,890 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
JetBlue
7.3
Good
2,924 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Portland 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 airport do you fly from for flights from Portland to Key Largo?

    Located just 2.9 mi from the city center, Portland is the airport most travelers will use when flying to Key Largo from Portland. Booking flights from Portland (PWM) to Key Largo should be relatively easy as there are 0 daily outbound flights to Key Largo from 5 different airlines.

  • What are the cheapest airlines to fly from Portland, Maine to Key Largo one-way?

    One-way options have recently been found by users for as low as $100 on American Airlines. Other airlines that offer cheap prices include JetBlue from $108 and Delta from $109 one-way.

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

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

  • How can I find direct flights from Portland to Key Largo?

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

  • Can I find deals for business class flights from Portland to Key Largo?

    Yes. Cheapflights offers flight deals from Portland 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 Portland, Maine to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Key Largo (average of $229). Flying from Portland, Maine 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 5 airlines flying from Portland to Key Largo

Discover the top 5 airlines that operate flights from Portland 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$193Average$323FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$367FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$217Average$421FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$272Average$503FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$276Average$526FlexibilityNo cancel feeOn-time63%
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