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Key Largo

$125+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — MIA
Jul 28 — Aug 41
Mon 7/28
Mon 8/4
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Key Largo are usually found in August or September, booked 23 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 July 23, 2025.

Round-trip from

$229
(American Airlines)

One-way from

$125
(Delta)

Popular in

December

Cheapest in

August

Average price

$396
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. 4% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 23, 2025.

This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/510:45 pmPDX - MIA
Nonstop5h 36mAmerican Airlines
Tue 11/118:19 pmMIA - PDX
Nonstop6h 32mAmerican Airlines
Deal found 7/21$229
This CheapOair deal was found by Cheapflights users on 7/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/147:52 pmPDX - MIA
1 stop20h 31mSpirit Airlines
Mon 8/188:23 pmMIA - PDX
1 stop25h 34mSpirit Airlines
Deal found 7/20$244
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Tue 9/28:37 pmPDX - MIA
1 stop18h 08mAlaska Airlines
Tue 9/96:45 pmMIA - PDX
1 stop8h 30mAlaska Airlines
Deal found 7/21$248
This Delta deal was found by Cheapflights users on 7/23. 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 9/121:48 pmPDX - MIA
1 stop7h 35mDelta
Fri 9/196:35 pmMIA - PDX
1 stop8h 17mDelta
Deal found 7/23$249
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Tue 8/195:00 amPDX - MIA
1 stop7h 45mUnited Airlines
Tue 8/2612:04 pmMIA - PDX
2 stops11h 57mUnited Airlines
Deal found 7/22$254
This Trip.com deal was found by Cheapflights users on 7/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:50 pmPDX - MIA
1 stop9h 40mFrontier
Sat 8/166:00 amMIA - PDX
1 stop20h 24mFrontier
Deal found 7/22$266
This Southwest deal was found by Cheapflights users on 7/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/239:05 pmPDX - MIA
1 stop10h 50mSouthwest
Wed 10/17:10 amMIA - PDX
2 stops14h 15mSouthwest
Deal found 7/21$268
This Hawaiian Airlines deal was found by Cheapflights users on 7/22. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:00 amPDX - MIA
Nonstop5h 42mHawaiian Airlines
Tue 12/164:45 pmMIA - PDX
Nonstop6h 38mHawaiian Airlines
Deal found 7/22$277
This FlightHub deal was found by Cheapflights users on 7/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/27:01 pmPDX - MIA
1 stop8h 29mMultiple Airlines
Mon 8/117:00 amMIA - PDX
1 stop29h 18mMultiple Airlines
Deal found 7/21$289

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 July 23, 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

Wed 11/5

10:45 pm-7:21 am

Nonstop5h 36m

Miami

Tue 11/11

8:19 pm-11:51 pm

Nonstop6h 32m

$229

PortlandMiami

PDX - MIA

PDXMIA

Portland

Thu 8/14

7:52 pm-7:23 pm

1 stop20h 31m

Miami

Mon 8/18

8:23 pm-6:57 pm

1 stop25h 34m

$244

PortlandMiami

PDX - MIA

PDXMIA

Portland

Tue 9/2

8:37 pm-5:45 pm

1 stop18h 08m

Miami

Tue 9/9

6:45 pm-12:15 am

1 stop8h 30m

$248

PortlandMiami

PDX - MIA

PDXMIA

Portland

Fri 9/12

1:48 pm-12:23 am

1 stop7h 35m

Miami

Fri 9/19

6:35 pm-11:52 pm

1 stop8h 17m

$249

PortlandMiami

PDX - MIA

PDXMIA

Portland

Tue 8/19

5:00 am-3:45 pm

1 stop7h 45m

Miami

Tue 8/26

12:04 pm-9:01 pm

2 stops11h 57m

$254

PortlandMiami

PDX - MIA

PDXMIA

Portland

Thu 8/14

5:50 pm-6:30 am

1 stop9h 40m

Miami

Sat 8/16

6:00 am-11:24 pm

1 stop20h 24m

$266

PortlandMiami

PDX - MIA

PDXMIA

Portland

Tue 9/23

9:05 pm-10:55 am

1 stop10h 50m

Miami

Wed 10/1

7:10 am-6:25 pm

2 stops14h 15m

$268

PortlandMiami

PDX - MIA

PDXMIA

Portland

Thu 8/7

10:23 am-5:38 am

1 stop16h 15m

Miami

Sun 8/17

6:00 am-12:16 am

1 stop21h 16m

$275

PortlandMiami

PDX - MIA

PDXMIA

Portland

Mon 12/15

7:00 am-3:42 pm

Nonstop5h 42m

Miami

Tue 12/16

4:45 pm-8:23 pm

Nonstop6h 38m

$277

PortlandMiami

PDX - MIA

PDXMIA

Portland

Tue 8/26

5:30 am-5:31 pm

1 stop9h 01m

$125

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 16 results
1
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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 July 18, 2025.

To ensure you get the cheapest price possible for a flight from Portland to Key Largo, you should look to book at least 23 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 July 23, 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 July 23, 2025.
Read through reviews of airlines operating flights from Portland to Key Largo, such as Alaska Airlines, Southwest, and Delta. 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

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,233 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,967 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,594 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,873 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 12 times in the past calendar month.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $125. Users have also found prices from $126 and $154 on Spirit Airlines and Frontier, respectively.

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

    The cheapest flight price from Portland to Key Largo is $114. On average you can expect to pay $1,008. The most popular route, (Portland - Miami), can usually be booked for $245.

  • 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 July 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$116Average$274FlexibilityNo cancel feeOn-time65%
FrontierCheapest$138Average$202FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$148Average$353FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$174Average$428FlexibilityNo cancel feeOn-time63%
DeltaCheapest$195Average$353FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$216Average$482FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$236Average$465FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$236Average$424FlexibilityNo cancel feeOn-time75%

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