$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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — MIA
Aug 10 — Aug 171
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Key Largo with Cheapflights
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”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portland to Key Largo
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Best
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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 July 11, 2026.
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 11, 2026.
This American Airlines deal was found by Cheapflights users on 7/7. 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.
Thu 8/67:28 am
PWM
- MIA
1 stop5h 28m
American Airlines
Thu 8/134:50 pm
MIA
- PWM
1 stop6h 51m
American Airlines
Deal found 7/7![American Airlines logo]()
$191
This American Airlines deal was found by Cheapflights users on 7/8. 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 8/76:46 pm
PWM
- MIA
1 stop6h 02m
American Airlines
Mon 8/103:00 pm
MIA
- PWM
1 stop6h 21m
American Airlines
Deal found 7/8![American Airlines logo]()
$214
This Delta deal was found by Cheapflights users on 7/8. 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.
Thu 10/2211:25 am
PWM
- MIA
1 stop6h 48m
Delta
Tue 10/275:59 pm
MIA
- PWM
1 stop5h 50m
Delta
Deal found 7/8![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 7/9. 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 11/33:43 pm
PWM
- MIA
1 stop8h 04m
United Airlines
Tue 11/108:58 am
MIA
- PWM
2 stops7h 11m
United Airlines
Deal found 7/9![United Airlines logo]()
$222
This Delta deal was found by Cheapflights users on 7/8. 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 11/62:09 pm
PWM
- MIA
1 stop8h 23m
Delta
Sat 11/141:45 pm
MIA
- PWM
1 stop5h 44m
Delta
Deal found 7/8![Delta logo]()
$227
This American Airlines deal was found by Cheapflights users on 7/8. 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.
Tue 9/16:00 am
PWM
- MIA
1 stop5h 20m
American Airlines
Sat 9/53:11 pm
MIA
- PWM
1 stop7h 04m
American Airlines
Deal found 7/8![American Airlines logo]()
$241
This Delta deal was found by Cheapflights users on 7/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/102:35 pm
PWM
- MIA
1 stop8h 34m
Delta
Mon 12/141:45 pm
MIA
- PWM
1 stop5h 44m
Delta
Deal found 7/10![Delta logo]()
$254
This Delta deal was found by Cheapflights users on 7/7. 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.
Tue 8/46:30 am
PWM
- MIA
1 stop7h 54m
Delta
Tue 8/113:29 pm
MIA
- PWM
1 stop8h 01m
Delta
Deal found 7/7![Delta logo]()
$255
This United Airlines deal was found by Cheapflights users on 7/7. 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 8/45:15 am
PWM
- MIA
1 stop6h 20m
United Airlines
Tue 8/1112:17 pm
MIA
- PWM
2 stops11h 15m
United Airlines
Deal found 7/7![United Airlines logo]()
$260
This Delta deal was found by Cheapflights users on 7/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/102:35 pm
PWM
- MIA
1 stop8h 34m
Delta
Fri 12/111:45 pm
MIA
- PWM
1 stop5h 44m
Delta
Deal found 7/10![Delta logo]()
$264
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Fri 9/116:00 am
PWM
- MIA
1 stop8h 51m
United Airlines
Tue 9/2212:17 pm
MIA
- PWM
2 stops11h 15m
United Airlines
Deal found 7/8![United Airlines logo]()
$276
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:15 am
PWM
- MIA
1 stop6h 05m
United Airlines
Sat 10/1012:29 pm
MIA
- PWM
2 stops10h 59m
United Airlines
Deal found 7/10![United Airlines logo]()
$282
Best flights from Portland to Key LargoDiscover 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 July 11, 2026.
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 July 11, 2026.
This Delta deal was found by Cheapflights users on 7/8. 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.
Thu 10/811:25 am
PWM
- MIA
1 stop6h 48m
Delta
Sat 10/171:55 pm
MIA
- PWM
1 stop7h 07m
Delta
Deal found 7/8![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:06 am
PWM
- MIA
1 stop8h 40m
United Airlines
Sat 9/267:00 am
MIA
- PWM
1 stop6h 51m
United Airlines
Deal found 7/10![United Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 7/9. 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.
Thu 10/156:30 am
PWM
- MIA
2 stops11h 45m
Southwest
Fri 10/166:40 am
MIA
- PWM
2 stops10h 15m
Southwest
Deal found 7/9![Southwest logo]()
$386
This Delta deal was found by Cheapflights users on 7/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:28 pm
PWM
- MIA
1 stop5h 39m
Delta
Tue 10/278:45 am
MIA
- PWM
1 stop8h 14m
Delta
Deal found 7/10![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:00 am
PWM
- MIA
2 stops11h 19m
United Airlines
Fri 12/115:20 pm
MIA
- PWM
1 stop5h 37m
United Airlines
Deal found 7/10![United Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:43 am
PWM
- MIA
1 stop8h 09m
United Airlines
Tue 10/2712:17 pm
MIA
- PWM
2 stops11h 42m
United Airlines
Deal found 7/10![United Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 7/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/710:00 am
PWM
- MIA
1 stop8h 37m
Delta
Sun 11/1511:40 am
MIA
- PWM
1 stop5h 19m
Delta
Deal found 7/10![Delta logo]()
$342
This Southwest deal was found by Cheapflights users on 7/8. 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.
Thu 10/86:30 am
PWM
- MIA
2 stops11h 45m
Southwest
Sat 10/177:00 am
MIA
- PWM
2 stops8h 55m
Southwest
Deal found 7/8![Southwest logo]()
$386
This United Airlines deal was found by Cheapflights users on 7/9. 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.
Wed 10/145:15 am
PWM
- MIA
2 stops9h 36m
United Airlines
Fri 10/1612:29 pm
MIA
- PWM
1 stop9h 17m
United Airlines
Deal found 7/9![United Airlines logo]()
$355
Last-minute flights from Portland to Key LargoDiscover last-minute flight deals from Portland to Key Largo. Data last updated July 11, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Key Largo. Data last updated July 11, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/7. 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.
Tue 8/46:30 am
PWM
- MIA
1 stop7h 54m
Delta
Tue 8/113:29 pm
MIA
- PWM
1 stop8h 01m
Delta
Deal found 7/7![Delta logo]()
$255
This United Airlines deal was found by Cheapflights users on 7/7. 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 8/45:15 am
PWM
- MIA
1 stop6h 20m
United Airlines
Tue 8/1112:17 pm
MIA
- PWM
2 stops11h 15m
United Airlines
Deal found 7/7![United Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 7/7. 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 8/45:15 am
PWM
- MIA
2 stops9h 42m
United Airlines
Wed 8/127:00 am
MIA
- PWM
1 stop6h 55m
United Airlines
Deal found 7/7![United Airlines logo]()
$294
This American Airlines deal was found by Cheapflights users on 7/7. 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.
Thu 8/67:28 am
PWM
- MIA
1 stop5h 28m
American Airlines
Thu 8/134:50 pm
MIA
- PWM
1 stop6h 51m
American Airlines
Deal found 7/7![American Airlines logo]()
$191
This American Airlines deal was found by Cheapflights users on 7/8. 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.
Thu 8/65:30 am
PWM
- MIA
1 stop7h 26m
American Airlines
Sun 8/97:45 am
MIA
- PWM
1 stop7h 55m
American Airlines
Deal found 7/8![American Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 7/8. 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 8/76:46 pm
PWM
- MIA
1 stop6h 02m
American Airlines
Mon 8/103:00 pm
MIA
- PWM
1 stop6h 21m
American Airlines
Deal found 7/8![American Airlines logo]()
$214
This American Airlines deal was found by Cheapflights users on 7/8. 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 8/76:46 pm
PWM
- MIA
1 stop6h 02m
American Airlines
Thu 8/134:50 pm
MIA
- PWM
1 stop6h 51m
American Airlines
Deal found 7/8![American Airlines logo]()
$227
This American Airlines deal was found by Cheapflights users on 7/7. 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 8/145:30 am
PWM
- MIA
1 stop7h 26m
American Airlines
Sun 8/237:15 am
MIA
- PWM
1 stop7h 06m
American Airlines
Deal found 7/7![American Airlines logo]()
$344
This Delta deal was found by Cheapflights users on 7/11. 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.
Thu 8/205:30 pm
PWM
- MIA
1 stop5h 47m
Delta
Wed 8/268:50 am
MIA
- PWM
1 stop8h 00m
Delta
Deal found 7/11![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 7/9. 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 8/241:12 pm
PWM
- MIA
1 stop7h 49m
Delta
Sat 8/292:08 pm
MIA
- PWM
1 stop7h 23m
Delta
Deal found 7/9![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 7/9. 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.
Mon 8/245:55 am
PWM
- MIA
2 stops9h 25m
Southwest
Sat 8/296:30 am
MIA
- PWM
1 stop5h 15m
Southwest
Deal found 7/9![Southwest logo]()
$339
One-way flights from Portland to Key LargoSearch for one-way flight options from Portland to Key Largo. Find affordable one-way fares based on user searches. Data last updated July 11, 2026.
Search for one-way flight options from Portland to Key Largo. Find affordable one-way fares based on user searches. Data last updated July 11, 2026.
This American Airlines deal was found by Cheapflights users on 7/9. 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 8/225:30 am
PWM
- MIA
1 stop7h 26m
American Airlines
Deal found 7/9![American Airlines logo]()
$109
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Sat 8/225:15 am
PWM
- MIA
2 stops9h 39m
United Airlines
Deal found 7/8![United Airlines logo]()
$114
This Delta deal was found by Cheapflights users on 7/8. 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 11/136:30 am
PWM
- MIA
1 stop8h 25m
Delta
Deal found 7/8![Delta logo]()
$119
This Southwest deal was found by Cheapflights users on 7/7. 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.
Thu 8/2010:30 am
PWM
- MIA
1 stop5h 55m
Southwest
Deal found 7/7![Southwest logo]()
$150
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Thu 9/175:15 am
PWM
- MIA
2 stops11h 16m
United Airlines
Deal found 7/8![United Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 7/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am
PWM
- MIA
2 stops16h 05m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 7/9. 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.
Sun 8/237:00 am
PWM
- MIA
2 stops37h 53m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$160
This American Airlines deal was found by Cheapflights users on 7/10. 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.
Mon 9/75:30 am
PWM
- MIA
1 stop5h 50m
American Airlines
Deal found 7/10![American Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 7/6. 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.
Tue 7/284:44 pm
PWM
- MIA
2 stops47h 49m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 7/9. 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.
Tue 8/184:44 pm
PWM
- MIA
2 stops30h 21m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$179
Find 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 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $191 (American Airlines) |
One-way from | $109 (American Airlines) |
Popular in | July |
Cheapest in | September |
Average price | $494 |
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 11, 2026.
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
Cheapest round-trip
PortlandMiami
PWM - MIA
PWMMIA
Portland
Thu 10/8
11:25 am-6:13 pm
1 stop6h 48m
Miami
Sat 10/17
1:55 pm-9:02 pm
1 stop7h 07m
$217
Quickest round-trip
PortlandMiami
PWM - MIA
PWMMIA
Portland
Thu 10/22
5:28 pm-11:07 pm
1 stop5h 39m
Miami
Tue 10/27
8:45 am-4:59 pm
1 stop8h 14m
$217
PortlandMiami
PWM - MIA
PWMMIA
Portland
Wed 9/23
6:06 am-2:46 pm
1 stop8h 40m
Miami
Sat 9/26
7:00 am-1:51 pm
1 stop6h 51m
$307
PortlandMiami
PWM - MIA
PWMMIA
Portland
Thu 12/10
6:00 am-5:19 pm
2 stops11h 19m
Miami
Fri 12/11
5:20 pm-10:57 pm
1 stop5h 37m
$308
PortlandMiami
PWM - MIA
PWMMIA
Portland
Wed 10/21
10:43 am-6:52 pm
1 stop8h 09m
Miami
Tue 10/27
12:17 pm-11:59 pm
2 stops11h 42m
$312
PortlandMiami
PWM - MIA
PWMMIA
Portland
Sat 11/7
10:00 am-6:37 pm
1 stop8h 37m
Miami
Sun 11/15
11:40 am-4:59 pm
1 stop5h 19m
$342
PortlandMiami
PWM - MIA
PWMMIA
Portland
Wed 10/14
5:15 am-2:51 pm
2 stops9h 36m
Miami
Fri 10/16
12:29 pm-9:46 pm
1 stop9h 17m
$355
PortlandMiami
PWM - MIA
PWMMIA
Portland
Thu 10/15
6:30 am-6:15 pm
2 stops11h 45m
Miami
Fri 10/16
6:40 am-4:55 pm
2 stops10h 15m
$386
PortlandMiami
PWM - MIA
PWMMIA
Portland
Thu 10/8
6:30 am-6:15 pm
2 stops11h 45m
Miami
Sat 10/17
7:00 am-3:55 pm
2 stops8h 55m
$386
Cheapest one-way
PortlandMiami
PWM - MIA
PWMMIA
Portland
Mon 11/16
3:00 pm-10:47 pm
1 stop7h 47m
$109
Showing 1-10 of 20 resultsSorted by cheapest first
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.
PWM-MIA
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
PWM-KE9
PWM-MIA
How much does it cost to fly round-trip from Portland, Maine 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 July 11, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Portland to Key Largo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Overall
7.9
Food
7.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Overall
7.9
Food
7.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Overall
7.9
Food
7.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Overall
7.9
Food
7.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Crew
8.6
Overall
7.9
Food
7.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$118 | Average$369 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$209 | Average$381 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$215 | Average$418 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$216 | Average$440 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$216 | Average$373 | FlexibilityNo cancel fee | On-time69% |