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Key Largo

$107+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — MIA
Sep 8 — Sep 151
Mon 9/8
Mon 9/15
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 18 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 September 3, 2025.

Round-trip from

$213
(Delta)

One-way from

$107
(American Airlines)

Popular in

July

Cheapest in

September

Average price

$278
From Portland to Key Largo
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One-way flight from Portland to Key Largo
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 3, 2025.

This Delta deal was found by Cheapflights users on 9/3. 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 9/276:33 amPWM - MIA
1 stop16h 37mDelta
Sat 10/47:35 pmMIA - PWM
1 stop18h 25mDelta
Deal found 9/3$213
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Fri 9/195:20 pmPWM - MIA
1 stop5h 35mAmerican Airlines
Mon 9/221:55 pmMIA - PWM
1 stop6h 48mAmerican Airlines
Deal found 9/3$237
This American Airlines deal was found by Cheapflights users on 9/1. 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 11/85:21 pmPWM - MIA
2 stops7h 25mAmerican Airlines
Sat 11/156:40 amMIA - PWM
1 stop5h 28mAmerican Airlines
Deal found 9/1$242
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Fri 9/192:02 pmPWM - MIA
1 stop7h 32mAmerican Airlines
Sun 9/216:50 amMIA - PWM
1 stop5h 39mAmerican Airlines
Deal found 9/3$268
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 12/412:23 pmPWM - MIA
1 stop7h 48mAmerican Airlines
Sat 12/139:30 amMIA - PWM
2 stops6h 55mAmerican Airlines
Deal found 9/3$273
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Thu 10/27:05 amPWM - MIA
1 stop9h 11mAmerican Airlines
Thu 10/93:20 pmMIA - PWM
1 stop7h 42mAmerican Airlines
Deal found 9/2$281
This Delta deal was found by Cheapflights users on 9/1. 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 12/241:03 pmPWM - MIA
1 stop27h 54mDelta
Wed 12/313:46 pmMIA - PWM
1 stop6h 56mDelta
Deal found 9/1$285
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Fri 9/266:00 amPWM - MIA
1 stop6h 18mUnited Airlines
Sat 9/2710:27 amMIA - PWM
2 stops9h 14mUnited Airlines
Deal found 9/3$286
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Fri 10/241:05 pmPWM - MIA
1 stop9h 58mAmerican Airlines
Sun 10/268:29 amMIA - PWM
1 stop4h 49mAmerican Airlines
Deal found 9/3$291
This American Airlines deal was found by Cheapflights users on 9/2. 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 10/2512:59 pmPWM - MIA
1 stop5h 44mAmerican Airlines
Sun 11/26:55 pmMIA - PWM
1 stop5h 04mAmerican Airlines
Deal found 9/2$298
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Sat 10/255:45 amPWM - MIA
2 stops8h 57mUnited Airlines
Mon 11/34:42 pmMIA - PWM
1 stop6h 35mUnited Airlines
Deal found 9/2$300
This Southwest deal was found by Cheapflights users on 9/2. 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.
Thu 10/25:45 amPWM - MIA
2 stops10h 30mSouthwest
Wed 10/811:45 amMIA - PWM
1 stop8h 10mSouthwest
Deal found 9/2$301

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 September 3, 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

Sat 9/27

6:33 am-11:10 pm

1 stop16h 37m

Miami

Sat 10/4

7:35 pm-2:00 pm

1 stop18h 25m

$213

PortlandMiami

PWM - MIA

PWMMIA

Portland

Tue 9/16

6:00 am-11:20 am

1 stop5h 20m

Miami

Fri 9/19

5:30 pm-11:45 pm

1 stop6h 15m

$237

PortlandMiami

PWM - MIA

PWMMIA

Portland

Fri 9/26

3:45 pm-10:45 pm

1 stop7h 00m

Miami

Sat 9/27

6:05 am-1:44 pm

1 stop7h 39m

$237

PortlandMiami

PWM - MIA

PWMMIA

Portland

Thu 10/2

12:40 pm-9:22 pm

1 stop8h 42m

Miami

Sun 10/5

7:10 am-2:00 pm

1 stop6h 50m

$237

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 11/8

12:30 pm-8:49 pm

1 stop8h 19m

Miami

Sat 11/15

6:40 am-12:08 pm

1 stop5h 28m

$237

PortlandMiami

PWM - MIA

PWMMIA

Portland

Mon 9/29

2:41 pm-9:14 pm

1 stop6h 33m

Miami

Thu 10/2

6:10 pm-12:11 am

1 stop6h 01m

$237

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 9/20

12:27 pm-8:46 pm

1 stop8h 19m

Miami

Thu 10/2

4:00 pm-11:05 pm

1 stop7h 05m

$237

PortlandMiami

PWM - MIA

PWMMIA

Portland

Thu 10/2

2:41 pm-9:14 pm

1 stop6h 33m

Miami

Wed 10/8

3:10 pm-11:09 pm

1 stop7h 59m

$237

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 10/25

12:00 pm-6:25 pm

1 stop6h 25m

Miami

Mon 11/3

3:33 pm-12:05 am

1 stop8h 32m

$237

PortlandMiami

PWM - MIA

PWMMIA

Portland

Thu 10/2

4:55 pm-10:38 pm

1 stop5h 43m

Miami

Sat 10/11

3:33 pm-12:05 am

1 stop8h 32m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/3

Showing 1-10 of 21 results
1
2
3

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 August 29, 2025.

Booking 18 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 $232). 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 September 3, 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.

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 September 3, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Portland to Key Largo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,972 reviews
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
JetBlue
7.2
Good
2,916 reviews
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How popular is this Portland, Maine to Key Largo flight route?

    Within the past month, 1 users have taken a look at flights from Portland to Key Largo.

  • How long is the flight from Portland, Maine to Key Largo?

    A quick flight from Portland, Maine to Key Largo can take about 5h 20m. Delta provides one of the quickest options available for as low as $237. Airlines will cover a distance of 1354 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $232). 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 September 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$194Average$297FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$212Average$491FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$356FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$216Average$409FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$256Average$517FlexibilityNo cancel feeOn-time63%

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