$317+ Cheap flights from Jacksonville, NC (OAJ) to Key Largo, FL
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
OAJ — MIA
Sep 21 — Sep 281
Round-trip
1 adult, Economy
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Find cheap flights from Jacksonville 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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Cheapest flights from Jacksonville to Key LargoExplore the most affordable flight options available from Jacksonville to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
Explore the most affordable flight options available from Jacksonville to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:15 pm -
1 stop4h 55m
Wed 9/238:25 am -
1 stop5h 16m
Deal found 8/19![Delta logo]()
$317
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:11 pm -
1 stop5h 28m
Sun 11/86:00 am -
1 stop6h 45m
Deal found 8/18![American Airlines logo]()
$342
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:00 pm -
1 stop7h 06m
Sat 9/196:00 am -
1 stop5h 15m
Deal found 8/19![Delta logo]()
$348
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:00 pm -
1 stop7h 05m
Wed 9/1612:03 pm -
1 stop5h 51m
Deal found 8/18![Delta logo]()
$360
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.
Sun 9/206:34 pm -
1 stop6h 21m
Sun 9/277:18 am -
1 stop6h 23m
Deal found 8/21![Delta logo]()
$367
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.
Thu 9/104:15 pm -
1 stop4h 54m
Mon 9/147:18 am -
1 stop6h 23m
Deal found 8/21![Delta logo]()
$387
This American Airlines deal was found by Cheapflights users on 8/17. 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 10/218:19 pm -
1 stop4h 33m
Mon 10/264:17 pm -
1 stop5h 53m
Deal found 8/17![American Airlines logo]()
$392
This American Airlines deal was found by Cheapflights users on 8/17. 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 8/197:09 pm -
1 stop4h 27m
Sat 8/227:45 am -
1 stop5h 40m
Deal found 8/17![American Airlines logo]()
$403
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:00 am -
1 stop5h 00m
Mon 10/265:50 pm -
1 stop4h 32m
Deal found 8/20![Delta logo]()
$407
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.
Thu 9/176:34 pm -
1 stop6h 21m
Mon 9/216:00 pm -
1 stop4h 22m
Deal found 8/21![Delta logo]()
$412
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:15 pm -
1 stop6h 21m
Thu 9/249:55 am -
1 stop6h 58m
Deal found 8/19![American Airlines logo]()
$417
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:09 pm -
1 stop6h 45m
Wed 9/98:15 am -
1 stop5h 12m
Deal found 8/21![American Airlines logo]()
$427
Best flights from Jacksonville to Key LargoDiscover carefully curated flight deals from Jacksonville to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
Discover carefully curated flight deals from Jacksonville to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:15 pm -
1 stop4h 55m
Wed 9/238:25 am -
1 stop5h 16m
Deal found 8/19![Delta logo]()
$317
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:11 pm -
1 stop5h 28m
Sun 11/86:00 am -
1 stop6h 45m
Deal found 8/19![American Airlines logo]()
$342
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:27 pm -
1 stop4h 15m
Wed 11/119:35 am -
1 stop5h 23m
Deal found 8/22![American Airlines logo]()
$342
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:00 pm -
1 stop7h 06m
Sat 9/196:00 am -
1 stop5h 15m
Deal found 8/19![Delta logo]()
$348
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.
Sat 9/1212:00 pm -
1 stop7h 05m
Wed 9/1612:03 pm -
1 stop5h 51m
Deal found 8/21![Delta logo]()
$360
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:18 pm -
1 stop6h 41m
Wed 9/238:52 am -
1 stop4h 35m
Deal found 8/21![American Airlines logo]()
$360
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.
Sun 9/206:34 pm -
1 stop6h 21m
Sun 9/277:18 am -
1 stop6h 23m
Deal found 8/21![Delta logo]()
$367
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:19 pm -
1 stop4h 33m
Mon 10/269:54 am -
1 stop6h 37m
Deal found 8/22![American Airlines logo]()
$392
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.
Thu 9/104:15 pm -
1 stop4h 54m
Mon 9/147:18 am -
1 stop6h 23m
Deal found 8/21![Delta logo]()
$387
Last-minute flights from Jacksonville to Key LargoDiscover last-minute flight deals from Jacksonville to Key Largo. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Jacksonville to Key Largo. Data last updated August 22, 2026 and is based on user searches.
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:15 pm -
1 stop6h 21m
Thu 9/249:55 am -
1 stop6h 58m
Deal found 8/19![American Airlines logo]()
$417
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/213:34 pm -
1 stop6h 18m
Mon 8/243:58 pm -
1 stop5h 23m
Deal found 8/19![American Airlines logo]()
$467
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/308:04 pm -
1 stop4h 41m
Sat 9/59:07 am -
1 stop5h 37m
Deal found 8/22![American Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 8/17. 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 9/14:15 pm -
1 stop5h 45m
Sat 9/58:25 am -
1 stop6h 55m
Deal found 8/17![Delta logo]()
$601
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:54 pm -
1 stop4h 56m
Tue 9/810:10 am -
1 stop4h 56m
Deal found 8/20![American Airlines logo]()
$578
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:09 pm -
1 stop6h 45m
Wed 9/98:15 am -
1 stop5h 12m
Deal found 8/21![American Airlines logo]()
$427
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:00 pm -
1 stop7h 06m
Sat 9/196:00 am -
1 stop5h 15m
Deal found 8/19![Delta logo]()
$348
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.
Thu 9/104:15 pm -
1 stop4h 54m
Mon 9/147:18 am -
1 stop6h 23m
Deal found 8/21![Delta logo]()
$387
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:00 pm -
1 stop7h 05m
Wed 9/1612:03 pm -
1 stop5h 51m
Deal found 8/18![Delta logo]()
$360
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.
Thu 9/176:34 pm -
1 stop6h 21m
Mon 9/216:00 pm -
1 stop4h 22m
Deal found 8/21![Delta logo]()
$412
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:15 pm -
1 stop4h 55m
Wed 9/238:25 am -
1 stop5h 16m
Deal found 8/19![Delta logo]()
$317
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.
Sun 9/206:34 pm -
1 stop6h 21m
Sun 9/277:18 am -
1 stop6h 23m
Deal found 8/21![Delta logo]()
$367
One-way flights from Jacksonville to Key LargoSearch for one-way flight options from Jacksonville to Key Largo. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
Search for one-way flight options from Jacksonville to Key Largo. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:18 am -
1 stop5h 22m
Deal found 8/19![American Airlines logo]()
$373
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:00 am -
1 stop7h 00m
Deal found 8/20![Delta logo]()
$393
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:34 pm -
1 stop6h 18m
Deal found 8/21![American Airlines logo]()
$418
Find flight deals from Jacksonville to Key Largo
Keep the following information in mind while searching for Jacksonville to Key Largo flight deals. Data was last updated August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $317 (Delta) |
Cheapflights Fare Finder
Customize your flight search to find flights from Jacksonville 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 7,457,451 searches. Data last updated August 22, 2026.
Use the filters below to find and compare flights from Jacksonville to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
JacksonvilleMiami
OAJ Jacksonville Albert J Ellis - MIA Miami
OAJMIA
Jacksonville Albert J Ellis
Sat 9/19
4:15 pm-9:10 pm
1 stop4h 55m
Miami
Wed 9/23
8:25 am-1:41 pm
1 stop5h 16m
$317
JacksonvilleMiami
OAJ Jacksonville Albert J Ellis - MIA Miami
OAJMIA
Jacksonville Albert J Ellis
Wed 11/4
7:11 pm-12:39 am
1 stop5h 28m
Miami
Sun 11/8
6:00 am-12:45 pm
1 stop6h 45m
$342
Quickest round-trip
JacksonvilleMiami
OAJ Jacksonville Albert J Ellis - MIA Miami
OAJMIA
Jacksonville Albert J Ellis
Fri 11/6
8:27 pm-12:42 am
1 stop4h 15m
Miami
Wed 11/11
9:35 am-2:58 pm
1 stop5h 23m
$342
JacksonvilleMiami
OAJ Jacksonville Albert J Ellis - MIA Miami
OAJMIA
Jacksonville Albert J Ellis
Thu 9/10
12:00 pm-7:06 pm
1 stop7h 06m
Miami
Sat 9/19
6:00 am-11:15 am
1 stop5h 15m
$348
JacksonvilleMiami
OAJ Jacksonville Albert J Ellis - MIA Miami
OAJMIA
Jacksonville Albert J Ellis
Sat 9/12
12:00 pm-7:05 pm
1 stop7h 05m
Miami
Wed 9/16
12:03 pm-5:54 pm
1 stop5h 51m
$360
JacksonvilleMiami
OAJ Jacksonville Albert J Ellis - MIA Miami
OAJMIA
Jacksonville Albert J Ellis
Sat 9/19
5:18 pm-11:59 pm
1 stop6h 41m
Miami
Wed 9/23
8:52 am-1:27 pm
1 stop4h 35m
$360
JacksonvilleMiami
OAJ Jacksonville Albert J Ellis - MIA Miami
OAJMIA
Jacksonville Albert J Ellis
Sun 9/20
6:34 pm-12:55 am
1 stop6h 21m
Miami
Sun 9/27
7:18 am-1:41 pm
1 stop6h 23m
$367
JacksonvilleMiami
OAJ Jacksonville Albert J Ellis - MIA Miami
OAJMIA
Jacksonville Albert J Ellis
Thu 9/10
4:15 pm-9:09 pm
1 stop4h 54m
Miami
Mon 9/14
7:18 am-1:41 pm
1 stop6h 23m
$387
JacksonvilleMiami
OAJ Jacksonville Albert J Ellis - MIA Miami
OAJMIA
Jacksonville Albert J Ellis
Wed 10/21
8:19 pm-12:52 am
1 stop4h 33m
Miami
Mon 10/26
9:54 am-4:31 pm
1 stop6h 37m
$392
Cheapest one-way
Quickest one-way
JacksonvilleMiami
OAJ Jacksonville Albert J Ellis - MIA Miami
OAJMIA
Jacksonville Albert J Ellis
Tue 9/8
10:18 am-3:40 pm
1 stop5h 22m
$373
Showing 1-10 of 12 resultsSorted by cheapest first
Best time to book a flight from Jacksonville to Key Largo
Have a flexible travel schedule? Discover the best time to fly to Key Largo from Jacksonville with our price prediction graph.
OAJ-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 Jacksonville to Key Largo
OAJ-KE9
OAJ-MIA
No data available for this route at this time. Please check back soon.
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 22, 2026.
Peruse reviews from past customers who have flown with Delta from Jacksonville to Key Largo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Overall
7.8
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Related info for your journey
Find useful and relevant information for your journey from Jacksonville to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Jacksonville to Key Largo
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Complete your trip
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Jacksonville and Key Largo flights
Browse other Jacksonville and Key Largo flight options. Last updated on August 22, 2026.
Other flights from Jacksonville
Browse through other flights departing from Jacksonville. Flights are based on user searches made on Cheapflights and were last updated on August 22, 2026.
Popular flight searches
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Jacksonville to Key Largo flights
Consider these flights traveling from Jacksonville to Key Largo.
Top airline flying from Jacksonville to Key Largo
Discover the top airline that operate flights from Jacksonville 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 7,457,451 searches. Data last updated August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$206 | Average$358 | FlexibilityNo cancel fee | On-timeN/A |