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Key Largo

$103+ Cheap flights from Portland (PDX) 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — MIA
Feb 11 — Feb 181
Wed 2/11
Wed 2/18
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 51 days in advance, depart on a Monday 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 January 12, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$212
(American Airlines)

One-way from

$103
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$387
Provider with most accurate pricing for Portland-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-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. 10% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 12, 2026.

This Delta deal was found by Cheapflights users on 1/11. 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 2/211:59 am
PDX
-
MIA
1 stop7h 49m
Delta
Wed 2/117:50 am
MIA
-
PDX
1 stop11h 35m
Delta
Deal found 1/11$215
This Delta deal was found by Cheapflights users on 1/11. 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.
Sun 2/19:45 pm
PDX
-
MIA
1 stop8h 41m
Delta
Sat 2/77:52 am
MIA
-
PDX
1 stop11h 35m
Delta
Deal found 1/11$216
This American Airlines deal was found by Cheapflights users on 1/11. 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 2/62:18 pm
PDX
-
MIA
1 stop7h 40m
American Airlines
Wed 2/115:15 am
MIA
-
PDX
1 stop9h 30m
American Airlines
Deal found 1/11$217
This Southwest deal was found by Cheapflights users on 1/12. 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.
Tue 3/35:05 am
PDX
-
MIA
2 stops10h 30m
Southwest
Tue 3/106:30 am
MIA
-
PDX
1 stop9h 20m
Southwest
Deal found 1/12$220
This Southwest deal was found by Cheapflights users on 1/12. 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.
Tue 4/2811:55 pm
PDX
-
MIA
1 stop9h 00m
Southwest
Tue 5/512:10 pm
MIA
-
PDX
2 stops11h 50m
Southwest
Deal found 1/12$222
This American Airlines deal was found by Cheapflights users on 1/10. 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 10/2411:42 am
PDX
-
MIA
1 stop8h 42m
American Airlines
Sun 11/18:19 pm
MIA
-
PDX
Nonstop6h 32m
American Airlines
Deal found 1/10$227
This United Airlines deal was found by Cheapflights users on 1/11. 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 2/17:00 am
PDX
-
MIA
1 stop8h 25m
United Airlines
Mon 2/96:20 am
MIA
-
PDX
1 stop8h 58m
United Airlines
Deal found 1/11$233
This Delta deal was found by Cheapflights users on 1/12. 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 2/99:45 pm
PDX
-
MIA
1 stop9h 55m
Delta
Thu 2/197:50 am
MIA
-
PDX
1 stop11h 20m
Delta
Deal found 1/12$235
This Delta deal was found by Cheapflights users on 1/12. 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.
Fri 2/275:10 pm
PDX
-
MIA
1 stop10h 25m
Delta
Wed 3/118:05 am
MIA
-
PDX
1 stop11h 38m
Delta
Deal found 1/12$236
This Alaska Airlines deal was found by Cheapflights users on 1/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/97:00 am
PDX
-
MIA
Nonstop5h 39m
Alaska Airlines
Thu 2/194:44 pm
MIA
-
PDX
Nonstop7h 00m
Alaska Airlines
Deal found 1/12$237

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 January 12, 2026.
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

PDX - MIA

PDXMIA

Portland

Mon 3/2

5:30 am-5:14 pm

1 stop8h 44m

Miami

Thu 3/19

5:56 pm-11:59 pm

1 stop9h 03m

$215

PortlandMiami

PDX - MIA

PDXMIA

Portland

Tue 2/24

9:45 pm-10:36 am

1 stop9h 51m

Miami

Wed 3/4

6:43 am-12:25 pm

1 stop8h 42m

$215

PortlandMiami

PDX - MIA

PDXMIA

Portland

Mon 3/2

5:30 am-5:14 pm

1 stop8h 44m

Miami

Wed 3/4

7:50 am-4:10 pm

1 stop11h 20m

$215

PortlandMiami

PDX - MIA

PDXMIA

Portland

Wed 4/8

5:19 am-4:46 pm

1 stop8h 27m

Miami

Wed 4/15

5:27 pm-11:55 pm

1 stop9h 28m

$215

PortlandMiami

PDX - MIA

PDXMIA

Portland

Tue 3/3

5:05 am-6:35 pm

2 stops10h 30m

Miami

Tue 3/17

6:30 am-12:50 pm

1 stop9h 20m

$220

PortlandMiami

PDX - MIA

PDXMIA

Portland

Wed 3/4

5:05 am-6:35 pm

2 stops10h 30m

Miami

Tue 3/10

6:55 am-4:50 pm

2 stops12h 55m

$226

PortlandMiami

PDX - MIA

PDXMIA

Portland

Mon 3/30

5:02 pm-5:32 am

1 stop9h 30m

Miami

Thu 4/2

8:05 am-4:43 pm

1 stop11h 38m

$235

PortlandMiami

PDX - MIA

PDXMIA

Portland

Tue 4/7

7:00 am-3:44 pm

Nonstop5h 44m

Miami

Tue 4/21

4:44 pm-8:35 pm

Nonstop6h 51m

$237

PortlandMiami

PDX - MIA

PDXMIA

Portland

Wed 2/4

6:30 am-9:30 pm

1 stop12h 00m

Miami

Wed 2/18

12:55 pm-10:15 pm

2 stops12h 20m

$266

PortlandMiami

PDX - MIA

PDXMIA

Portland

Wed 2/4

6:30 am-9:30 pm

1 stop12h 00m

Miami

Sat 2/7

7:00 am-4:40 pm

2 stops12h 40m

$271

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

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 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 January 9, 2026.

To ensure you get the cheapest price possible for a flight from Portland to Key Largo, you should look to book at least 51 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, June is the cheapest month in which you can book a flight from Portland to Key Largo (average of $108). Flying from Portland to Key Largo in March is currently the most expensive (average of $209). 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 PDX 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 January 12, 2026.

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

How much does it cost to fly round-trip from Portland to Key Largo?

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 January 12, 2026.
Read through reviews of airlines operating flights from Portland to Key Largo, such as Alaska Airlines, Delta, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,696 reviews

Food

7.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,696 reviews
Alaska Airlines
8.0
Very good
11,696 reviews

Food

7.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,039 reviews
Alaska Airlines
8.0
Very good
11,696 reviews

Food

7.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Hawaiian Airlines
7.8
Good
2,827 reviews
Alaska Airlines
8.0
Very good
11,696 reviews

Food

7.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,149 reviews
Alaska Airlines
8.0
Very good
11,696 reviews

Food

7.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.2
Good
11,114 reviews
Alaska Airlines
8.0
Very good
11,696 reviews

Food

7.1

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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?

    For a flight from Portland to Key Largo, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city. Portland is the only Portland airport and it handles 3 outbound flights to Key Largo per day. 9 airlines have flights to Key Largo from Portland on a regular basis.

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

    Flights from Portland to Key Largo have been viewed 7 times in the past calendar month.

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

    There are many flights that can get you from Portland to Key Largo in 8h 44m. Fly via Delta or Southwest to get the fastest option. Portland and Key Largo are separated by a distance of 2695 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $101. Users have also found prices from $103 and $109 on Frontier and Delta, respectively.

  • What are the most reliable airlines from Portland to Key Largo?

    No one likes to see their flight delayed. When booking a flight from Portland to Key Largo consider choosing American Airlines (95%), Qatar Airways (90%) or Hawaiian Airlines (90%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Portland to Key Largo?

    The cheapest flight price from Portland to Key Largo is $98. On average you can expect to pay $893. The most popular route, (Portland - Miami), can usually be booked for $195.

  • 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 to Key Largo?

    Currently, June is the cheapest month in which you can book a flight from Portland to Key Largo (average of $108). Flying from Portland to Key Largo in March is currently the most expensive (average of $209). 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.

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Alternative routes for Portland to Key Largo

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Top 9 airlines flying from Portland to Key Largo

Discover the top 9 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 January 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$127Average$334FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$139Average$431FlexibilityNo cancel feeOn-time85%
FrontierCheapest$140Average$246FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$174Average$394FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$187Average$208FlexibilityNo cancel feeOn-time62%
DeltaCheapest$196Average$410FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$200Average$473FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$212Average$442FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$236Average$360FlexibilityNo cancel feeOn-time69%

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