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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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — MIA
jul. 21 — jul. 281
lun. 7/21
lun. 7/28
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 julio 16, 2025.

Round-trip from

$199
(American Airlines)

One-way from

$100
(American Airlines)

Popular in

April

Cheapest in

September

Average price

$527
From Portland to Key Largo
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One-way flight from Portland to Key Largo
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Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 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 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 julio 16, 2025.

This American Airlines deal was found by Cheapflights users on 7/13. 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.
jue. 8/285:57 pmPWM - MIA
1 stop6h 36mAmerican Airlines
sáb. 9/68:20 amMIA - PWM
1 stop7h 57mAmerican Airlines
Deal found 7/13$199
This Southwest deal was found by Cheapflights users on 7/13. 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.
mié. 10/11:50 pmPWM - MIA
1 stop7h 25mSouthwest
sáb. 10/412:35 pmMIA - PWM
2 stops9h 50mSouthwest
Deal found 7/13$204
This Delta deal was found by Cheapflights users on 7/14. 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.
sáb. 8/305:30 pmPWM - MIA
1 stop6h 54mDelta
jue. 9/44:25 pmMIA - PWM
1 stop7h 38mDelta
Deal found 7/14$217
This United Airlines deal was found by Cheapflights users on 7/14. 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.
jue. 8/286:00 amPWM - MIA
1 stop8h 11mUnited Airlines
sáb. 9/68:30 amMIA - PWM
2 stops13h 29mUnited Airlines
Deal found 7/14$302
This Mytrip deal was found by Cheapflights users on 7/13. 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.
vie. 8/296:05 pmPWM - MIA
2 stops28h 32mMultiple Airlines
dom. 8/3110:23 amMIA - PWM
3 stops25h 17mMultiple Airlines
Deal found 7/13$471

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 julio 16, 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

jue. 8/28

5:57 pm-12:33 am

1 stop6h 36m

Miami

sáb. 9/6

8:20 am-4:17 pm

1 stop7h 57m

$199

PortlandMiami

PWM - MIA

PWMMIA

Portland

mié. 10/1

1:50 pm-9:15 pm

1 stop7h 25m

Miami

sáb. 10/4

12:35 pm-10:25 pm

2 stops9h 50m

$204

PortlandMiami

PWM - MIA

PWMMIA

Portland

sáb. 8/30

5:30 pm-12:24 am

1 stop6h 54m

Miami

jue. 9/4

4:25 pm-12:03 am

1 stop7h 38m

$217

PortlandMiami

PWM - MIA

PWMMIA

Portland

jue. 8/28

6:00 am-2:11 pm

1 stop8h 11m

Miami

sáb. 9/6

8:30 am-9:59 pm

2 stops13h 29m

$302

PortlandMiami

PWM - MIA

PWMMIA

Portland

vie. 8/29

6:05 pm-10:37 pm

2 stops28h 32m

Miami

dom. 8/31

10:23 am-11:40 am

3 stops25h 17m

$471

PortlandMiami

PWM - MIA

PWMMIA

Portland

mar. 8/19

6:00 am-11:19 am

1 stop5h 19m

$100

PortlandMiami

PWM - MIA

PWMMIA

Portland

mié. 8/20

5:50 am-4:20 pm

2 stops10h 30m

$105

PortlandMiami

PWM - MIA

PWMMIA

Portland

sáb. 11/15

6:00 am-6:17 pm

2 stops12h 17m

$154

PortlandMiami

PWM - MIA

PWMMIA

Portland

mar. 11/25

5:40 am-2:30 pm

1 stop8h 50m

$170

PortlandMiami

PWM - MIA

PWMMIA

Portland

sáb. 7/26

6:58 pm-11:14 am

2 stops16h 16m

$201

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/13

Showing 1-10 of 11 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 July 11, 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 julio 16, 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 julio 16, 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
4,239 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,239 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,957 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,863 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Frontier
5.9
Fair
3,256 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Entertainment

7.6

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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.

  • 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 Southwest from $105 and United Airlines from $154 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 $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 julio 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$193Average$295FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$370FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$216Average$403FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$256Average$491FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$272Average$525FlexibilityNo cancel feeOn-time63%

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