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Key Largo

$109+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — MIA
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Key Largo are usually found in September or May, booked 39 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap 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 December 12, 2025.

This Delta deal was found by Cheapflights users on 12/9. 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.
Tue 12/166:15 amPWM - MIA
1 stop8h 12mDelta
Wed 12/244:01 pmMIA - PWM
1 stop6h 42mDelta
Deal found 12/9$290
This Delta deal was found by Cheapflights users on 12/9. 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.
Tue 12/162:34 pmPWM - MIA
1 stop8h 49mDelta
Thu 12/187:12 amMIA - PWM
1 stop6h 42mDelta
Deal found 12/9$363
This Delta deal was found by Cheapflights users on 12/9. 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.
Mon 12/156:00 amPWM - MIA
1 stop8h 25mDelta
Wed 12/244:01 pmMIA - PWM
1 stop6h 42mDelta
Deal found 12/9$373
This Delta deal was found by Cheapflights users on 12/9. 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.
Tue 12/164:43 pmPWM - MIA
1 stop6h 09mDelta
Tue 12/235:01 pmMIA - PWM
1 stop5h 42mDelta
Deal found 12/9$381
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Mon 12/1511:21 amPWM - MIA
1 stop6h 15mMultiple Airlines
Wed 12/249:59 pmMIA - PWM
2 stops35h 07mMultiple Airlines
Deal found 12/9$387
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Mon 12/1511:21 amPWM - MIA
1 stop6h 15mMultiple Airlines
Sun 12/215:30 amMIA - PWM
2 stops27h 36mMultiple Airlines
Deal found 12/9$393
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Mon 12/1511:21 amPWM - MIA
1 stop6h 15mMultiple Airlines
Thu 12/182:47 pmMIA - PWM
2 stops18h 19mMultiple Airlines
Deal found 12/9$395
This American Airlines deal was found by Cheapflights users on 12/9. 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 12/173:55 pmPWM - MIA
1 stop5h 40mAmerican Airlines
Sun 12/215:44 pmMIA - PWM
1 stop5h 11mAmerican Airlines
Deal found 12/9$399
This United Airlines deal was found by Cheapflights users on 12/9. 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.
Wed 12/173:20 pmPWM - MIA
1 stop7h 22mUnited Airlines
Wed 12/244:48 pmMIA - PWM
1 stop6h 34mUnited Airlines
Deal found 12/9$408

Find 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 December 12, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$217
(Southwest)

One-way from

$109
(American Airlines)

Popular in

July

Cheapest in

September

Average price

$406
Provider with most accurate pricing for Boston Logan Intl-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Miami flights.
Search Deals
From Portland to Key Largo
Search Deals
One-way flight from Portland to Key Largo
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 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

Tue 2/10

5:45 am-11:20 am

1 stop5h 35m

Miami

Sun 2/15

6:30 am-12:25 pm

1 stop5h 55m

$217

PortlandMiami

PWM - MIA

PWMMIA

Portland

Wed 1/7

2:35 pm-8:26 pm

1 stop5h 51m

Miami

Wed 1/14

11:33 am-5:16 pm

1 stop5h 43m

$217

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 1/10

1:13 pm-9:29 pm

1 stop8h 16m

Miami

Tue 1/13

5:35 pm-12:26 am

1 stop6h 51m

$217

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sun 3/1

5:30 am-11:15 am

1 stop5h 45m

Miami

Wed 3/4

7:15 am-2:55 pm

1 stop7h 40m

$217

PortlandMiami

PWM - MIA

PWMMIA

Portland

Tue 3/3

2:35 pm-11:20 pm

1 stop8h 45m

Miami

Thu 3/5

5:36 pm-12:18 am

1 stop6h 42m

$217

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 1/10

12:35 pm-8:40 pm

1 stop8h 05m

Miami

Tue 1/13

4:30 pm-10:15 pm

1 stop5h 45m

$217

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sun 1/18

3:42 pm-11:59 pm

1 stop8h 17m

Miami

Sat 1/24

9:00 am-6:54 pm

2 stops9h 54m

$222

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 2/28

2:35 pm-11:20 pm

1 stop8h 45m

Miami

Tue 3/3

9:24 am-5:14 pm

1 stop7h 50m

$234

PortlandMiami

PWM - MIA

PWMMIA

Portland

Tue 2/3

6:00 am-5:15 pm

2 stops11h 15m

Miami

Tue 2/10

5:40 pm-11:27 pm

1 stop5h 47m

$254

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 1/17

3:30 pm-8:40 pm

1 stop5h 10m

Miami

Sun 1/25

6:30 am-12:25 pm

1 stop5h 55m

$268

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 23 results
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2
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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 December 5, 2025.

Booking 39 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, January is the cheapest month in which you can book a flight from Portland, Maine to Key Largo (average of $41). Flying from Portland, Maine to Key Largo in December is currently the most expensive (average of $103). 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 December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland, Maine to Key Largo in the afternoon. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight in the evening.

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 12, 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
7.9
Good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

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
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

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
8,007 reviews
Southwest
7.9
Good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

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
9,095 reviews
Southwest
7.9
Good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

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
11,050 reviews
Southwest
7.9
Good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

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
JetBlue
7.2
Good
2,899 reviews
Southwest
7.9
Good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

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 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 35m. Southwest provides one of the quickest options available for as low as $217. Airlines will cover a distance of 1354 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $99 on American Airlines. Other airlines that offer cheap prices include Southwest from $108 and Delta from $108 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, January is the cheapest month in which you can book a flight from Portland, Maine to Key Largo (average of $41). Flying from Portland, Maine to Key Largo in December is currently the most expensive (average of $103). 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$118Average$344FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$194Average$266FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$212Average$443FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$216Average$480FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$216Average$409FlexibilityNo cancel feeOn-time71%

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