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Key Largo

$94+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — MIA
Aug 26 — Sep 21
Tue 8/26
Tue 9/2
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 August 21, 2025.

Round-trip from

$189
(FlightHub)

One-way from

$94
(Frontier)

Popular in

December

Cheapest in

September

Average price

$348
From Portland to Key Largo
Search Deals
One-way flight from Portland to Key Largo
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Highest demand for flights based on searches. 7% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 21, 2025.

This FlightHub deal was found by Cheapflights users on 8/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1812:43 pmPDX - MIA
1 stop14h 36mFrontier
Thu 10/236:00 amMIA - PDX
1 stop8h 38mFrontier
Deal found 8/19$189
This FlightHub deal was found by Cheapflights users on 8/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:05 amPDX - MIA
1 stop15h 39mFrontier
Sun 9/146:00 amMIA - PDX
1 stop21h 12mFrontier
Deal found 8/19$194
This Priceline deal was found by Cheapflights users on 8/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/73:26 pmPDX - MIA
1 stop11h 53mFrontier
Sat 11/156:00 amMIA - PDX
1 stop8h 56mFrontier
Deal found 8/20$198
This Frontier deal was found by Cheapflights users on 8/19. 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.
Sat 9/67:15 amPDX - MIA
1 stop14h 29mFrontier
Sat 9/1312:18 pmMIA - PDX
2 stops13h 16mFrontier
Deal found 8/19$203
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:05 amPDX - MIA
2 stops26h 18mFrontier
Sat 9/206:45 amMIA - PDX
1 stop18h 49mFrontier
Deal found 8/18$213
This Kiwi.com deal was found by Cheapflights users on 8/20. 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.
Fri 9/266:05 amPDX - MIA
1 stop15h 39mFrontier
Sat 10/46:45 amMIA - PDX
1 stop18h 49mFrontier
Deal found 8/20$215
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/811:23 amPDX - MIA
2 stops26h 52mFrontier
Fri 9/126:00 amMIA - PDX
1 stop21h 12mFrontier
Deal found 8/18$219
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Sat 9/277:15 amPDX - MIA
1 stop14h 29mFrontier
Mon 9/296:00 amMIA - PDX
1 stop21h 12mFrontier
Deal found 8/21$224
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Fri 9/266:05 amPDX - MIA
1 stop15h 39mFrontier
Mon 9/296:00 amMIA - PDX
1 stop21h 12mFrontier
Deal found 8/21$225
This Alaska Airlines deal was found by Cheapflights users on 8/21. 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.
Fri 9/268:37 pmPDX - MIA
1 stop18h 08mAlaska Airlines
Tue 9/306:45 pmMIA - PDX
1 stop8h 30mAlaska Airlines
Deal found 8/21$226
This Delta deal was found by Cheapflights users on 8/21. 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 9/266:10 amPDX - MIA
1 stop8h 20mDelta
Sun 10/56:35 pmMIA - PDX
1 stop8h 17mDelta
Deal found 8/21$227

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 August 21, 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

Fri 9/12

6:05 am-12:44 am

1 stop15h 39m

Miami

Sat 9/20

6:45 am-10:34 pm

1 stop18h 49m

$194

PortlandMiami

PDX - MIA

PDXMIA

Portland

Sat 9/6

7:15 am-12:44 am

1 stop14h 29m

Miami

Sat 9/13

12:18 pm-10:34 pm

2 stops13h 16m

$203

PortlandMiami

PDX - MIA

PDXMIA

Portland

Sat 9/27

7:15 am-12:44 am

1 stop14h 29m

Miami

Mon 9/29

6:00 am-12:12 am

1 stop21h 12m

$224

PortlandMiami

PDX - MIA

PDXMIA

Portland

Fri 9/26

6:05 am-12:44 am

1 stop15h 39m

Miami

Mon 9/29

6:00 am-12:12 am

1 stop21h 12m

$225

PortlandMiami

PDX - MIA

PDXMIA

Portland

Fri 9/26

8:37 pm-5:45 pm

1 stop18h 08m

Miami

Tue 9/30

6:45 pm-12:15 am

1 stop8h 30m

$226

PortlandMiami

PDX - MIA

PDXMIA

Portland

Wed 10/1

7:15 am-12:44 am

1 stop14h 29m

Miami

Sun 10/5

6:00 am-12:12 am

1 stop21h 12m

$226

PortlandMiami

PDX - MIA

PDXMIA

Portland

Tue 9/23

5:15 am-5:23 pm

1 stop9h 08m

Miami

Tue 9/30

7:43 am-4:02 pm

1 stop11h 19m

$227

PortlandMiami

PDX - MIA

PDXMIA

Portland

Tue 10/21

12:40 am-1:28 pm

1 stop9h 48m

Miami

Wed 10/22

6:05 pm-11:57 pm

1 stop8h 52m

$227

PortlandMiami

PDX - MIA

PDXMIA

Portland

Tue 2/3

9:45 pm-10:52 am

1 stop10h 07m

Miami

Sat 2/14

8:00 am-4:15 pm

1 stop11h 15m

$227

PortlandMiami

PDX - MIA

PDXMIA

Portland

Wed 10/15

5:30 am-4:54 pm

1 stop8h 24m

Miami

Wed 10/22

6:45 pm-11:43 pm

1 stop7h 58m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 24 results
1
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 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 August 8, 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, September is the cheapest month in which you can book a flight from Portland to Key Largo (average of $232). Flying from Portland 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 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 August 21, 2025.

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.

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. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 August 21, 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
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
United Airlines
7.4
Good
8,934 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Frontier
5.8
Fair
3,207 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.

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 11 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 15h 39m. Fly via Frontier 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 $103. On average you can expect to pay $913. The most popular route, (Portland - Miami), can usually be booked for $227.

  • 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, September is the cheapest month in which you can book a flight from Portland to Key Largo (average of $232). Flying from Portland 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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Alternative routes for Portland to Key Largo

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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 August 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$132Average$303FlexibilityNo cancel feeOn-time65%
FrontierCheapest$140Average$230FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$158Average$428FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$174Average$423FlexibilityNo cancel feeOn-time63%
DeltaCheapest$189Average$409FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$216Average$482FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$222Average$463FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$236Average$420FlexibilityNo cancel feeOn-time75%

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