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 $109 on American Airlines. Other airlines that offer cheap prices include United Airlines from $154 and Delta from $201 one-way.

What is the cheapest day to fly from Portland, Maine to Key Largo?

Travelers seeking maximum savings on their Portland, Maine to Key Largo flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Portland, Maine to Key Largo?

Consider American Airlines, JetBlue or Delta when booking your flight. These represent the most popular airlines when flying from Portland, Maine to Key Largo.

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

To save up to 46% on this flight, we recommend booking at least 60 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Portland, Maine to Key Largo from $374 1-2 weeks out and tickets from $609 for flights departing within the next 72 hours.

What is the cheapest month to fly from Portland, Maine to Key Largo?

The best pricing can be found in the month of September. Prices to Key Largo from Portland, Maine average $438. You can even find prices in September for less than $438, as users have found deals to Key Largo from as low as $217. The month of April appears to be one of the more expensive times to travel to Key Largo from Portland, Maine. Flying in the targeted month can save you up to 23%.

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.

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.

$109+ Flights from Portland, ME to Key Largo

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Portland to Key Largo are usually found in September or June, booked 64 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Portland to Key Largo

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$215 (JetBlue)
One-way from	$109 (American Airlines)
Popular in	April
Cheapest in	September
Average price	$541

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. 6% potential increase in price ($30 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 April 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 April 15, 2025.

Fri 5/236:00 amPWM - MIA

1 stop7h 38mAmerican Airlines

Wed 5/286:35 amMIA - PWM

1 stop6h 47mAmerican Airlines

Deal found 4/15

$208

Sat 5/107:12 amPWM - MIA

1 stop6h 19mJetBlue

Wed 5/142:30 pmMIA - PWM

1 stop8h 30mJetBlue

Deal found 4/15

$215

Wed 5/145:30 amPWM - MIA

2 stops8h 56mUnited Airlines

Wed 5/215:22 pmMIA - PWM

1 stop6h 05mUnited Airlines

Deal found 4/14

$251

Wed 4/301:52 pmPWM - MIA

1 stop7h 22mDelta

Tue 5/63:25 pmMIA - PWM

1 stop7h 50mDelta

Deal found 4/15

$257

Sat 5/1012:40 pmPWM - MIA

2 stops10h 00mSouthwest

Wed 5/145:05 pmMIA - PWM

1 stop5h 25mSouthwest

Deal found 4/15

$284

Sat 5/1010:23 amPWM - MIA

2 stops33h 34mMultiple Airlines

Wed 5/143:15 pmMIA - PWM

3 stops23h 17mMultiple Airlines

Deal found 4/15

$529

Best flights from Portland to Key Largo
Discover carefully curated flight deals from Portland to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 15, 2025.

Sat 5/107:12 amPWM - MIA

1 stop6h 19mJetBlue

Wed 5/142:30 pmMIA - PWM

1 stop8h 30mJetBlue

Deal found 4/15

$215

Wed 5/211:12 pmPWM - MIA

1 stop6h 05mAmerican Airlines

Mon 5/267:20 amMIA - PWM

1 stop7h 52mAmerican Airlines

Deal found 4/15

$217

Sat 5/105:30 amPWM - MIA

2 stops8h 51mUnited Airlines

Wed 5/145:22 pmMIA - PWM

1 stop6h 05mUnited Airlines

Deal found 4/14

$222

Wed 6/1112:55 pmPWM - MIA

1 stop8h 21mDelta

Sun 6/153:29 pmMIA - PWM

1 stop8h 01mDelta

Deal found 4/15

$267

Sat 5/1012:40 pmPWM - MIA

2 stops10h 00mSouthwest

Wed 5/145:05 pmMIA - PWM

1 stop5h 25mSouthwest

Deal found 4/15

$284

Sat 5/106:23 pmPWM - MIA

3 stops37h 37mMultiple Airlines

Wed 5/143:15 pmMIA - PWM

3 stops23h 17mMultiple Airlines

Deal found 4/14

$507

Last-minute flights from Portland to Key Largo
Discover last-minute flight deals from Portland to Key Largo. Data last updated April 15, 2025 and is based on user searches.

Tue 4/225:18 pmPWM - MIA

2 stops7h 07mAmerican Airlines

Wed 4/308:22 amMIA - PWM

1 stop5h 40mAmerican Airlines

Deal found 4/15

$434

Wed 4/2312:45 pmPWM - MIA

2 stops11h 06mUnited Airlines

Wed 4/3012:20 pmMIA - PWM

1 stop9h 15mUnited Airlines

Deal found 4/15

$465

Wed 4/238:12 pmPWM - MIA

2 stops21h 51mMultiple Airlines

Sat 4/266:00 amMIA - PWM

2 stops13h 32mMultiple Airlines

Deal found 4/15

$848

Thu 4/245:20 amPWM - MIA

1 stop7h 25mDelta

Wed 4/308:23 amMIA - PWM

1 stop7h 37mDelta

Deal found 4/15

$349

Thu 4/246:35 amPWM - MIA

1 stop6h 42mJetBlue

Thu 4/245:55 pmMIA - PWM

1 stop5h 33mJetBlue

Deal found 4/14

$541

Fri 4/255:50 amPWM - MIA

2 stops8h 55mSouthwest

Mon 4/286:15 amMIA - PWM

1 stop7h 25mSouthwest

Deal found 4/15

$599

Wed 4/301:52 pmPWM - MIA

1 stop7h 22mDelta

Tue 5/63:25 pmMIA - PWM

1 stop7h 50mDelta

Deal found 4/15

$257

Sat 5/107:12 amPWM - MIA

1 stop6h 19mJetBlue

Wed 5/142:30 pmMIA - PWM

1 stop8h 30mJetBlue

Deal found 4/15

$215

Sat 5/1012:40 pmPWM - MIA

2 stops10h 00mSouthwest

Wed 5/145:05 pmMIA - PWM

1 stop5h 25mSouthwest

Deal found 4/15

$284

Sat 5/1010:23 amPWM - MIA

2 stops33h 34mMultiple Airlines

Wed 5/143:15 pmMIA - PWM

3 stops23h 17mMultiple Airlines

Deal found 4/15

$529

Wed 5/145:30 amPWM - MIA

2 stops8h 56mUnited Airlines

Wed 5/215:22 pmMIA - PWM

1 stop6h 05mUnited Airlines

Deal found 4/14

$251

Fri 5/236:00 amPWM - MIA

1 stop7h 38mAmerican Airlines

Wed 5/286:35 amMIA - PWM

1 stop6h 47mAmerican Airlines

Deal found 4/15

$208

One-way flights from Portland to Key Largo
Search for one-way flight options from Portland to Key Largo. Find affordable one-way fares based on user searches. Data last updated April 15, 2025.

Tue 5/136:00 amPWM - MIA

1 stop7h 38mAmerican Airlines

Deal found 4/15

$109

Tue 5/135:30 amPWM - MIA

2 stops8h 46mUnited Airlines

Deal found 4/15

$154

Tue 4/225:20 amPWM - MIA

1 stop5h 34mDelta

Deal found 4/15

$201

Wed 4/236:15 amPWM - MIA

2 stops11h 10mSouthwest

Deal found 4/15

$255

Wed 4/238:12 pmPWM - MIA

3 stops28h 25mMultiple Airlines

Deal found 4/15

$351

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Key Largo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandMiami

PWM - MIA

PWMMIA

Portland

Fri 5/23

6:00 am-1:38 pm

1 stop7h 38m

Miami

Wed 5/28

6:35 am-1:22 pm

1 stop6h 47m

$208

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 5/10

7:12 am-1:31 pm

1 stop6h 19m

Miami

Wed 5/14

2:30 pm-11:00 pm

1 stop8h 30m

$215

PortlandMiami

PWM - MIA

PWMMIA

Portland

Wed 5/14

5:30 am-2:26 pm

2 stops8h 56m

Miami

Wed 5/21

5:22 pm-11:27 pm

1 stop6h 05m

$251

PortlandMiami

PWM - MIA

PWMMIA

Portland

Wed 4/30

1:52 pm-9:14 pm

1 stop7h 22m

Miami

Tue 5/6

3:25 pm-11:15 pm

1 stop7h 50m

$257

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 5/10

12:40 pm-10:40 pm

2 stops10h 00m

Miami

Wed 5/14

5:05 pm-10:30 pm

1 stop5h 25m

$284

PortlandMiami

PWM - MIA

PWMMIA

Portland

Sat 5/10

10:23 am-7:57 pm

2 stops33h 34m

Miami

Wed 5/14

3:15 pm-2:32 pm

3 stops23h 17m

$529

PortlandMiami

PWM - MIA

PWMMIA

Portland

Tue 5/13

6:00 am-1:38 pm

1 stop7h 38m

$109

PortlandMiami

PWM - MIA

PWMMIA

Portland

Tue 5/13

5:30 am-2:16 pm

2 stops8h 46m

$154

PortlandMiami

PWM - MIA

PWMMIA

Portland

Tue 4/22

5:20 am-10:54 am

1 stop5h 34m

$201

PortlandMiami

PWM - MIA

PWMMIA

Portland

Wed 4/23

6:15 am-5:25 pm

2 stops11h 10m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 11 results

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?

Booking 64 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?

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

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

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 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

4,279 reviews

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

4,279 reviews

Southwest

8.0

Very good

4,279 reviews

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

7,918 reviews

Southwest

8.0

Very good

4,279 reviews

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

8,658 reviews

Southwest

8.0

Very good

4,279 reviews

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

2,927 reviews

Southwest

8.0

Very good

4,279 reviews

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

4,279 reviews

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

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 $109 on American Airlines. Other airlines that offer cheap prices include United Airlines from $154 and Delta from $201 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

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

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Top 5 airlines flying from Portland to Key Largo

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest$193	Average$324	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$216	Average$368	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$216	Average$411	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$256	Average$523	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$272	Average$506	FlexibilityNo cancel fee	On-time69%

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$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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to Key Largo with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Portland to Key Largo are usually found in September or June, booked 64 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 April 15, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portland to Key Largo

Cheapest flights from Portland to Key LargoExplore 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 April 15, 2025.

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 April 15, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Key Largo that are best for you.

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.

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 April 11, 2025.

What is the cheapest month to book a flight from Portland, Maine to Key Largo?

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 April 15, 2025.

Rainfall in Key Largo by month

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

Temperature in Key Largo by month

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

Reviews of airlines servicing Key Largo

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?

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

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

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

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

What is the cheapest month to book a flight from Portland, Maine to Key Largo?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Portland to Key Largo

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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 April 15, 2025.