$239+ Cheap flights from Jacksonville, NC (OAJ) 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
OAJ — MIA
Aug 11 — Aug 181
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Jacksonville to Key Largo
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Best
Last-minute
One-way
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 July 12, 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 July 12, 2026.
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 8/176:00 am
OAJ
- MIA
1 stop5h 00m
Delta
Sat 8/226:00 am
MIA
- OAJ
1 stop5h 30m
Delta
Deal found 7/9![Delta logo]()
$302
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 8/36:11 pm
OAJ
- MIA
1 stop6h 35m
American Airlines
Mon 8/1010:10 am
MIA
- OAJ
1 stop4h 56m
American Airlines
Deal found 7/10![American Airlines logo]()
$307
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.
Wed 11/42:26 pm
OAJ
- MIA
1 stop5h 17m
Delta
Sun 11/87:05 am
MIA
- OAJ
1 stop6h 36m
Delta
Deal found 7/8![Delta logo]()
$312
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.
Sat 7/254:35 pm
OAJ
- MIA
1 stop7h 04m
Delta
Fri 7/316:00 am
MIA
- OAJ
1 stop5h 19m
Delta
Deal found 7/8![Delta logo]()
$317
This Delta deal was found by Cheapflights users on 7/12. 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.
Sun 8/96:48 pm
OAJ
- MIA
1 stop6h 19m
Delta
Sun 8/166:00 am
MIA
- OAJ
1 stop5h 30m
Delta
Deal found 7/12![Delta logo]()
$327
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.
Tue 8/46:48 pm
OAJ
- MIA
1 stop5h 59m
Delta
Sat 8/86:00 am
MIA
- OAJ
1 stop5h 30m
Delta
Deal found 7/8![Delta logo]()
$332
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.
Sat 10/314:06 pm
OAJ
- MIA
1 stop4h 55m
Delta
Sun 11/87:05 am
MIA
- OAJ
1 stop6h 36m
Delta
Deal found 7/11![Delta logo]()
$347
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.
Thu 7/236:44 pm
OAJ
- MIA
1 stop4h 55m
Delta
Sun 7/266:00 am
MIA
- OAJ
1 stop5h 19m
Delta
Deal found 7/9![Delta logo]()
$367
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.
Sat 7/1812:11 pm
OAJ
- MIA
1 stop7h 14m
Delta
Fri 7/246:00 pm
MIA
- OAJ
1 stop4h 29m
Delta
Deal found 7/9![Delta logo]()
$380
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 12/117:48 pm
OAJ
- MIA
1 stop5h 04m
American Airlines
Sat 12/198:34 am
MIA
- OAJ
1 stop7h 07m
American Airlines
Deal found 7/8![American Airlines logo]()
$404
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.
Sat 7/256:11 pm
OAJ
- MIA
1 stop4h 55m
American Airlines
Wed 7/298:40 am
MIA
- OAJ
1 stop5h 52m
American Airlines
Deal found 7/10![American Airlines logo]()
$460
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 July 12, 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 July 12, 2026.
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 8/176:00 am
OAJ
- MIA
1 stop5h 00m
Delta
Sat 8/226:00 am
MIA
- OAJ
1 stop5h 30m
Delta
Deal found 7/9![Delta logo]()
$302
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 8/36:11 pm
OAJ
- MIA
1 stop6h 35m
American Airlines
Mon 8/1010:10 am
MIA
- OAJ
1 stop4h 56m
American Airlines
Deal found 7/10![American Airlines logo]()
$307
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.
Fri 8/76:48 pm
OAJ
- MIA
1 stop6h 19m
Delta
Thu 8/138:25 am
MIA
- OAJ
1 stop5h 21m
Delta
Deal found 7/9![Delta logo]()
$307
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.
Wed 11/42:26 pm
OAJ
- MIA
1 stop5h 17m
Delta
Sun 11/87:05 am
MIA
- OAJ
1 stop6h 36m
Delta
Deal found 7/9![Delta logo]()
$312
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.
Sat 7/254:35 pm
OAJ
- MIA
1 stop7h 04m
Delta
Fri 7/316:00 am
MIA
- OAJ
1 stop5h 19m
Delta
Deal found 7/8![Delta logo]()
$317
This Delta deal was found by Cheapflights users on 7/12. 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.
Sun 8/96:48 pm
OAJ
- MIA
1 stop6h 19m
Delta
Sun 8/166:00 am
MIA
- OAJ
1 stop5h 30m
Delta
Deal found 7/12![Delta logo]()
$327
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.
Tue 8/46:00 am
OAJ
- MIA
1 stop5h 00m
Delta
Sat 8/88:25 am
MIA
- OAJ
1 stop6h 55m
Delta
Deal found 7/11![Delta logo]()
$332
Last-minute flights from Jacksonville to Key LargoDiscover last-minute flight deals from Jacksonville to Key Largo. Data last updated July 12, 2026 and is based on user searches.
Discover last-minute flight deals from Jacksonville to Key Largo. Data last updated July 12, 2026 and is based on user searches.
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.
Sat 7/1812:11 pm
OAJ
- MIA
1 stop7h 14m
Delta
Fri 7/246:00 pm
MIA
- OAJ
1 stop4h 29m
Delta
Deal found 7/9![Delta logo]()
$380
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.
Thu 7/236:44 pm
OAJ
- MIA
1 stop4h 55m
Delta
Sun 7/266:00 am
MIA
- OAJ
1 stop5h 19m
Delta
Deal found 7/9![Delta logo]()
$367
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.
Sat 7/254:35 pm
OAJ
- MIA
1 stop7h 04m
Delta
Fri 7/316:00 am
MIA
- OAJ
1 stop5h 19m
Delta
Deal found 7/8![Delta logo]()
$317
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.
Sat 7/256:11 pm
OAJ
- MIA
1 stop4h 55m
American Airlines
Wed 7/298:40 am
MIA
- OAJ
1 stop5h 52m
American Airlines
Deal found 7/10![American Airlines logo]()
$460
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:11 pm
OAJ
- MIA
1 stop4h 55m
American Airlines
Fri 7/317:57 am
MIA
- OAJ
1 stop6h 35m
American Airlines
Deal found 7/11![American Airlines logo]()
$492
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.
Tue 7/286:00 am
OAJ
- MIA
1 stop4h 57m
Delta
Fri 7/316:00 am
MIA
- OAJ
1 stop5h 19m
Delta
Deal found 7/9![Delta logo]()
$627
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 8/36:11 pm
OAJ
- MIA
1 stop6h 35m
American Airlines
Mon 8/1010:10 am
MIA
- OAJ
1 stop4h 56m
American Airlines
Deal found 7/10![American Airlines logo]()
$307
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 8/36:37 am
OAJ
- MIA
1 stop5h 00m
American Airlines
Thu 8/67:45 am
MIA
- OAJ
1 stop5h 40m
American Airlines
Deal found 7/10![American Airlines logo]()
$577
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.
Tue 8/46:48 pm
OAJ
- MIA
1 stop5h 59m
Delta
Sat 8/86:00 am
MIA
- OAJ
1 stop5h 30m
Delta
Deal found 7/8![Delta logo]()
$332
This Delta deal was found by Cheapflights users on 7/12. 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.
Sun 8/96:48 pm
OAJ
- MIA
1 stop6h 19m
Delta
Sun 8/166:00 am
MIA
- OAJ
1 stop5h 30m
Delta
Deal found 7/12![Delta logo]()
$327
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 8/176:00 am
OAJ
- MIA
1 stop5h 00m
Delta
Sat 8/226:00 am
MIA
- OAJ
1 stop5h 30m
Delta
Deal found 7/9![Delta logo]()
$302
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 July 12, 2026.
Search for one-way flight options from Jacksonville to Key Largo. Find affordable one-way fares based on user searches. Data last updated July 12, 2026.
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.
Mon 9/216:34 pm
OAJ
- MIA
1 stop6h 21m
Delta
Deal found 7/11![Delta logo]()
$239
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.
Sun 9/206:00 am
OAJ
- MIA
2 stops14h 47m
Delta
Deal found 7/11![Delta logo]()
$358
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:06 am
OAJ
- MIA
2 stops6h 42m
American Airlines
Deal found 7/11![American Airlines logo]()
$672
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:05 am
OAJ
- MIA
2 stops7h 53m
American Airlines
Deal found 7/11![American Airlines logo]()
$770
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 July 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $302 (Delta) |
One-way from | $239 (Delta) |
Popular in | August |
Cheapest in | September |
Average price | $621 |
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 2,558,603 searches. Data last updated July 12, 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
Quickest round-trip
JacksonvilleMiami
OAJ - MIA
OAJMIA
Jacksonville Albert J Ellis
Mon 8/17
6:00 am-11:00 am
1 stop5h 00m
Miami
Sat 8/22
6:00 am-11:30 am
1 stop5h 30m
$302
JacksonvilleMiami
OAJ - MIA
OAJMIA
Jacksonville Albert J Ellis
Mon 8/3
6:11 pm-12:46 am
1 stop6h 35m
Miami
Mon 8/10
10:10 am-3:06 pm
1 stop4h 56m
$307
JacksonvilleMiami
OAJ - MIA
OAJMIA
Jacksonville Albert J Ellis
Fri 8/7
6:48 pm-1:07 am
1 stop6h 19m
Miami
Thu 8/13
8:25 am-1:46 pm
1 stop5h 21m
$307
JacksonvilleMiami
OAJ - MIA
OAJMIA
Jacksonville Albert J Ellis
Wed 11/4
2:26 pm-7:43 pm
1 stop5h 17m
Miami
Sun 11/8
7:05 am-1:41 pm
1 stop6h 36m
$312
JacksonvilleMiami
OAJ - MIA
OAJMIA
Jacksonville Albert J Ellis
Sat 7/25
4:35 pm-11:39 pm
1 stop7h 04m
Miami
Fri 7/31
6:00 am-11:19 am
1 stop5h 19m
$317
JacksonvilleMiami
OAJ - MIA
OAJMIA
Jacksonville Albert J Ellis
Sun 8/9
6:48 pm-1:07 am
1 stop6h 19m
Miami
Sun 8/16
6:00 am-11:30 am
1 stop5h 30m
$327
JacksonvilleMiami
OAJ - MIA
OAJMIA
Jacksonville Albert J Ellis
Tue 8/4
6:00 am-11:00 am
1 stop5h 00m
Miami
Sat 8/8
8:25 am-3:20 pm
1 stop6h 55m
$332
Cheapest one-way
Quickest one-way
JacksonvilleMiami
OAJ - MIA
OAJMIA
Jacksonville Albert J Ellis
Mon 9/21
6:34 pm-12:55 am
1 stop6h 21m
$239
JacksonvilleMiami
OAJ - MIA
OAJMIA
Jacksonville Albert J Ellis
Sun 9/20
6:00 am-8:47 pm
2 stops14h 47m
$358
JacksonvilleMiami
OAJ - MIA
OAJMIA
Jacksonville Albert J Ellis
Sun 9/20
9:05 am-4:58 pm
2 stops7h 53m
$770
Sorted 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 July 12, 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.
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Overall
7.8
Boarding
8.1
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 July 12, 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 July 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 2,558,603 searches. Data last updated July 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$206 | Average$357 | FlexibilityNo cancel fee | On-timeN/A |