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Key Largo

$68+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — MIA
nov. 13 — nov. 201
jue. 11/13
jue. 11/20
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 85 days in advance, depart on a Tuesday or Wednesday and return on a Friday

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 octubre 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$208
(Kiwi.com)

One-way from

$68
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$342
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
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Highest demand for flights based on searches. 10% potential increase in price ($47 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/812:52 pmPDX - MIA
1 stop14h 27mFrontier
lun. 11/178:00 amMIA - PDX
2 stops30h 56mFrontier
Deal found 10/11$208
This Kiwi.com deal was found by Cheapflights users on 10/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/247:15 amPDX - MIA
Nonstop5h 42mHawaiian Airlines
mié. 12/35:00 pmMIA - PDX
Nonstop6h 50mHawaiian Airlines
Deal found 10/13$209
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/25:30 amPDX - MIA
1 stop8h 20mDelta
jue. 12/42:37 pmMIA - PDX
1 stop9h 15mDelta
Deal found 10/13$217
This Delta deal was found by Cheapflights users on 10/12. 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.
lun. 11/312:40 amPDX - MIA
1 stop9h 48mDelta
lun. 11/107:40 amMIA - PDX
1 stop11h 42mDelta
Deal found 10/12$218
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/212:40 amPDX - MIA
1 stop9h 48mDelta
vie. 11/77:36 amMIA - PDX
1 stop11h 36mDelta
Deal found 10/13$219
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/812:52 pmPDX - MIA
1 stop14h 27mFrontier
jue. 11/136:00 amMIA - PDX
2 stops30h 18mFrontier
Deal found 10/12$220
This Southwest deal was found by Cheapflights users on 10/12. 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.
mar. 11/115:55 amPDX - MIA
1 stop7h 05mSouthwest
mar. 11/181:30 pmMIA - PDX
2 stops12h 05mSouthwest
Deal found 10/12$222
This Frontier deal was found by Cheapflights users on 10/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/3012:52 pmPDX - MIA
1 stop14h 27mFrontier
sáb. 11/86:00 amMIA - PDX
1 stop8h 56mFrontier
Deal found 10/13$224
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/41:26 pmPDX - MIA
2 stops20h 03mFrontier
sáb. 11/86:00 amMIA - PDX
1 stop8h 56mFrontier
Deal found 10/12$227
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/267:15 amPDX - MIA
Nonstop5h 42mHawaiian Airlines
mié. 12/35:00 pmMIA - PDX
Nonstop6h 50mHawaiian Airlines
Deal found 10/12$228
This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/612:52 pmPDX - MIA
1 stop14h 27mFrontier
sáb. 11/86:00 amMIA - PDX
1 stop8h 56mFrontier
Deal found 10/12$231

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 octubre 14, 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

PDX - MIA

PDXMIA

Portland

mar. 4/7

12:55 am-1:40 pm

1 stop9h 45m

Miami

mié. 4/15

8:00 am-4:10 pm

1 stop11h 10m

$217

PortlandMiami

PDX - MIA

PDXMIA

Portland

mar. 2/24

6:04 am-6:57 pm

1 stop9h 53m

Miami

mié. 3/4

8:00 am-4:15 pm

1 stop11h 15m

$217

PortlandMiami

PDX - MIA

PDXMIA

Portland

lun. 11/24

5:17 pm-5:51 am

1 stop9h 34m

Miami

mié. 12/3

6:05 pm-12:16 am

1 stop9h 11m

$218

PortlandMiami

PDX - MIA

PDXMIA

Portland

dom. 11/2

5:10 pm-6:21 am

1 stop10h 11m

Miami

vie. 11/7

7:36 am-4:12 pm

1 stop11h 36m

$219

PortlandMiami

PDX - MIA

PDXMIA

Portland

lun. 11/3

5:30 am-4:54 pm

1 stop8h 24m

Miami

vie. 11/7

7:36 am-4:12 pm

1 stop11h 36m

$219

PortlandMiami

PDX - MIA

PDXMIA

Portland

dom. 11/2

5:10 pm-6:21 am

1 stop10h 11m

Miami

lun. 11/10

7:40 am-4:22 pm

1 stop11h 42m

$219

PortlandMiami

PDX - MIA

PDXMIA

Portland

jue. 1/22

6:30 am-9:30 pm

1 stop12h 00m

Miami

vie. 1/30

2:00 pm-10:15 pm

1 stop11h 15m

$222

PortlandMiami

PDX - MIA

PDXMIA

Portland

vie. 1/23

11:59 pm-11:55 am

1 stop8h 56m

Miami

dom. 2/1

6:20 am-12:18 pm

1 stop8h 58m

$233

PortlandMiami

PDX - MIA

PDXMIA

Portland

mar. 3/10

7:00 am-3:42 pm

Nonstop5h 42m

Miami

mié. 3/11

4:45 pm-8:23 pm

Nonstop6h 38m

$237

PortlandMiami

PDX - MIA

PDXMIA

Portland

jue. 2/19

6:57 pm-5:51 am

1 stop7h 54m

Miami

mar. 2/24

1:00 pm-9:18 pm

2 stops11h 18m

$262

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 22 results
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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 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 October 10, 2025.

To ensure you get the cheapest price possible for a flight from Portland to Key Largo, you should look to book at least 85 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 December is currently the most expensive (average of $213). 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 octubre 14, 2025.

It’s typically best to fly out from Portland to Key Largo in the afternoon. Doing so could potentially save you 30% on the flight price compared to flying in the morning, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Portland to Key Largo. Price data was last updated on December 16, 2024.

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

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 octubre 14, 2025.
Read through reviews of airlines operating flights from Portland to Key Largo, such as Alaska Airlines, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,079 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,079 reviews
Alaska Airlines
8.0
Very good
11,079 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
8.0
Very good
7,975 reviews
Alaska Airlines
8.0
Very good
11,079 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,976 reviews
Alaska Airlines
8.0
Very good
11,079 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,042 reviews
Alaska Airlines
8.0
Very good
11,079 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Frontier
5.8
Fair
3,135 reviews
Alaska Airlines
8.0
Very good
11,079 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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 0 outbound flights to Key Largo per day. 8 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 9h 45m. Fly via Delta to get the fastest option. Portland and Key Largo are separated by a distance of 2695 mi.

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

    The cheapest flight price from Portland to Key Largo is $148. On average you can expect to pay $874. The most popular route, (Portland - Miami), can usually be booked for $209.

  • 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 December is currently the most expensive (average of $213). 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 8 airlines flying from Portland to Key Largo

Discover the top 8 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 octubre 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$131Average$342FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$139Average$432FlexibilityNo cancel feeOn-time85%
FrontierCheapest$140Average$200FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$174Average$401FlexibilityNo cancel feeOn-time63%
DeltaCheapest$195Average$412FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$216Average$491FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$224Average$479FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$236Average$434FlexibilityNo cancel feeOn-time75%

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