$88+ Cheap flights from Key Largo, FL to Luis Munoz Marin Intl (SJU)
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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SJU
Aug 17 — Aug 241
Round-trip
1 adult, Economy
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Find cheap flights from Key Largo to Luis Munoz Marin Intl 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.Cheapflights Tip: The best prices from Key Largo to San Juan Luis Munoz Marin Intl are usually found in April or January, booked 58 days in advance, depart on a Monday or Tuesday and return on a Friday
Cheap flight deals from Key Largo to Luis Munoz Marin Intl
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Best
Last-minute
One-way
Cheapest flights from Key Largo to Luis Munoz Marin IntlExplore the most affordable flight options available from Key Largo to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2026.
Explore the most affordable flight options available from Key Largo to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2026.
This Frontier deal was found by Cheapflights users on 7/15. 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.
Tue 8/49:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Sat 8/85:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/15![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 7/15. 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 10/249:28 pm
MIA
- SJU
Nonstop2h 48m
Frontier
Tue 10/277:24 pm
SJU
- MIA
Nonstop2h 51m
Frontier
Deal found 7/15![Frontier logo]()
$174
This Super.com deal was found by Cheapflights users on 7/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/219:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Thu 7/237:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$175
This Frontier deal was found by Cheapflights users on 7/15. 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.
Wed 7/159:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Tue 7/217:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/15![Frontier logo]()
$176
This Expedia deal was found by Cheapflights users on 7/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:50 pm
MIA
- SJU
1 stop18h 29m
Frontier
Tue 11/38:24 pm
SJU
- MIA
Nonstop2h 51m
Frontier
Deal found 7/17![Frontier logo]()
$177
This CheapOair deal was found by Cheapflights users on 7/15. 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 8/139:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Sun 8/167:10 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/15![Frontier logo]()
$178
This eDestinos deal was found by Cheapflights users on 7/14. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/289:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Thu 7/307:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 7/14. 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 7/189:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Tue 7/217:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 7/15. 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.
Mon 7/279:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Wed 7/297:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/15![Frontier logo]()
$181
This Frontier deal was found by Cheapflights users on 7/13. 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.
Tue 11/33:39 pm
MIA
- SJU
Nonstop2h 40m
Frontier
Mon 11/98:24 pm
SJU
- MIA
Nonstop2h 51m
Frontier
Deal found 7/13![Frontier logo]()
$182
This eDestinos deal was found by Cheapflights users on 7/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/199:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Tue 7/217:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/13![Frontier logo]()
$183
This Frontier deal was found by Cheapflights users on 7/14. 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.
Wed 8/59:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Fri 8/77:10 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$184
Best flights from Key Largo to Luis Munoz Marin IntlDiscover carefully curated flight deals from Key Largo to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 18, 2026.
Discover carefully curated flight deals from Key Largo to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 18, 2026.
This Southwest deal was found by Cheapflights users on 7/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:50 pm
MIA
- SJU
2 stops11h 00m
Southwest
Sun 9/206:35 am
SJU
- MIA
2 stops11h 00m
Southwest
Deal found 7/17![Southwest logo]()
$260
This Southwest deal was found by Cheapflights users on 7/16. 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.
Wed 9/27:10 am
MIA
- SJU
1 stop5h 10m
Southwest
Wed 9/910:30 am
SJU
- MIA
2 stops11h 20m
Southwest
Deal found 7/16![Southwest logo]()
$260
This Southwest deal was found by Cheapflights users on 7/13. 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.
Fri 10/1612:30 pm
MIA
- SJU
2 stops11h 50m
Southwest
Wed 10/215:50 am
SJU
- MIA
1 stop11h 40m
Southwest
Deal found 7/13![Southwest logo]()
$262
This Southwest deal was found by Cheapflights users on 7/14. 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.
Fri 10/25:20 am
MIA
- SJU
2 stops11h 25m
Southwest
Mon 10/55:00 am
SJU
- MIA
2 stops10h 30m
Southwest
Deal found 7/14![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 7/13. 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 11/311:35 am
MIA
- SJU
2 stops9h 40m
Southwest
Mon 11/96:35 am
SJU
- MIA
1 stop10h 50m
Southwest
Deal found 7/13![Southwest logo]()
$290
This Southwest deal was found by Cheapflights users on 7/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:15 am
MIA
- SJU
2 stops8h 55m
Southwest
Sun 8/236:35 am
SJU
- MIA
1 stop4h 55m
Southwest
Deal found 7/17![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 7/14. 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.
Wed 8/267:30 am
MIA
- SJU
2 stops10h 40m
Southwest
Sun 8/306:00 am
SJU
- MIA
2 stops11h 35m
Southwest
Deal found 7/14![Southwest logo]()
$314
This Southwest deal was found by Cheapflights users on 7/13. 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.
Sat 9/56:30 am
MIA
- SJU
2 stops10h 10m
Southwest
Mon 9/76:30 am
SJU
- MIA
1 stop4h 55m
Southwest
Deal found 7/13![Southwest logo]()
$315
This Southwest deal was found by Cheapflights users on 7/14. 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.
Sat 8/297:45 am
MIA
- SJU
2 stops10h 20m
Southwest
Fri 9/42:35 pm
SJU
- MIA
1 stop7h 30m
Southwest
Deal found 7/14![Southwest logo]()
$335
This Southwest deal was found by Cheapflights users on 7/16. 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.
Wed 8/127:30 am
MIA
- SJU
2 stops11h 30m
Southwest
Sun 8/165:55 pm
SJU
- MIA
1 stop4h 55m
Southwest
Deal found 7/16![Southwest logo]()
$360
This Southwest deal was found by Cheapflights users on 7/16. 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.
Fri 12/49:15 am
MIA
- SJU
2 stops11h 40m
Southwest
Sun 12/65:35 am
SJU
- MIA
1 stop7h 20m
Southwest
Deal found 7/16![Southwest logo]()
$360
This Southwest deal was found by Cheapflights users on 7/14. 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.
Sat 8/159:40 am
MIA
- SJU
2 stops9h 40m
Southwest
Sat 8/225:05 am
SJU
- MIA
2 stops9h 55m
Southwest
Deal found 7/14![Southwest logo]()
$382
Last-minute flights from Key Largo to Luis Munoz Marin IntlDiscover last-minute flight deals from Key Largo to Luis Munoz Marin Intl. Data last updated July 18, 2026 and is based on user searches.
Discover last-minute flight deals from Key Largo to Luis Munoz Marin Intl. Data last updated July 18, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 7/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/179:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Tue 7/217:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$182
This Frontier deal was found by Cheapflights users on 7/14. 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 7/189:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Tue 7/217:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$180
This eDestinos deal was found by Cheapflights users on 7/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/199:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Tue 7/217:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/13![Frontier logo]()
$183
This Super.com deal was found by Cheapflights users on 7/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/219:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Thu 7/237:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$175
This eDestinos deal was found by Cheapflights users on 7/14. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/279:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Wed 7/297:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$176
This eDestinos deal was found by Cheapflights users on 7/14. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/289:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Thu 7/307:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 7/15. 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.
Tue 8/49:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Sat 8/85:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/15![Frontier logo]()
$173
This CheapOair deal was found by Cheapflights users on 7/14. 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.
Wed 8/59:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Fri 8/77:10 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$177
This CheapOair deal was found by Cheapflights users on 7/15. 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 8/139:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Sun 8/167:10 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/15![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 7/14. 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.
Thu 8/209:48 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Mon 8/247:30 am
SJU
- MIA
Nonstop2h 45m
Frontier
Deal found 7/14![Frontier logo]()
$174
One-way flights from Key Largo to Luis Munoz Marin IntlSearch for one-way flight options from Key Largo to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated July 18, 2026.
Search for one-way flight options from Key Largo to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated July 18, 2026.
This Super.com deal was found by Cheapflights users on 7/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/29:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/16![Frontier logo]()
$88
This CheapOair deal was found by Cheapflights users on 7/15. 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.
Tue 8/49:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/15![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 7/15. 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 12/810:05 am
MIA
- SJU
Nonstop2h 46m
Frontier
Deal found 7/15![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 7/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:48 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/14![Frontier logo]()
$91
This Expedia deal was found by Cheapflights users on 7/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/89:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/15![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 7/13. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/319:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/13![Frontier logo]()
$93
This CheapOair deal was found by Cheapflights users on 7/13. 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 7/309:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/13![Frontier logo]()
$94
This CheapOair deal was found by Cheapflights users on 7/14. 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.
Wed 8/59:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/14![Frontier logo]()
$95
This eDestinos deal was found by Cheapflights users on 7/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/249:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/13![Frontier logo]()
$96
This eDestinos deal was found by Cheapflights users on 7/15. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/269:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/15![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 7/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/239:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/17![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 7/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/259:33 pm
MIA
- SJU
Nonstop2h 55m
Frontier
Deal found 7/18![Frontier logo]()
$101
Find flight deals from Key Largo to Luis Munoz Marin Intl
Keep the following information in mind while searching for Key Largo to Luis Munoz Marin Intl flight deals. Data was last updated July 18, 2026.
Round-trip from | $173 (Frontier) |
|---|---|
One-way from | $88 (Super.com) |
Popular in | June |
Cheapest in | April |
Average price | $297 |
Cheapflights Fare Finder
Customize your flight search to find flights from Key Largo to Luis Munoz Marin Intl 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 18, 2026.
Use the filters below to find and compare flights from Key Largo to San Juan Luis Munoz Marin Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Fri 9/18
12:50 pm-11:50 pm
2 stops11h 00m
San Juan Luis Munoz Marin Intl
Sun 9/20
6:35 am-5:35 pm
2 stops11h 00m
$260
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Wed 9/2
7:10 am-12:20 pm
1 stop5h 10m
San Juan Luis Munoz Marin Intl
Wed 9/9
10:30 am-9:50 pm
2 stops11h 20m
$260
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Fri 10/16
12:30 pm-12:20 am
2 stops11h 50m
San Juan Luis Munoz Marin Intl
Wed 10/21
5:50 am-5:30 pm
1 stop11h 40m
$262
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Fri 10/2
5:20 am-4:45 pm
2 stops11h 25m
San Juan Luis Munoz Marin Intl
Mon 10/5
5:00 am-3:30 pm
2 stops10h 30m
$282
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Tue 11/3
11:35 am-10:15 pm
2 stops9h 40m
San Juan Luis Munoz Marin Intl
Mon 11/9
6:35 am-4:25 pm
1 stop10h 50m
$290
Quickest round-trip
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Wed 8/19
9:15 am-6:10 pm
2 stops8h 55m
San Juan Luis Munoz Marin Intl
Sun 8/23
6:35 am-11:30 am
1 stop4h 55m
$293
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Wed 8/26
7:30 am-6:10 pm
2 stops10h 40m
San Juan Luis Munoz Marin Intl
Sun 8/30
6:00 am-5:35 pm
2 stops11h 35m
$314
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Sat 9/5
6:30 am-4:40 pm
2 stops10h 10m
San Juan Luis Munoz Marin Intl
Mon 9/7
6:30 am-11:25 am
1 stop4h 55m
$315
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Sat 8/29
7:45 am-6:05 pm
2 stops10h 20m
San Juan Luis Munoz Marin Intl
Fri 9/4
2:35 pm-10:05 pm
1 stop7h 30m
$335
MiamiSan Juan
MIA - SJU
MIASJU
Miami
Wed 8/12
7:30 am-7:00 pm
2 stops11h 30m
San Juan Luis Munoz Marin Intl
Sun 8/16
5:55 pm-10:50 pm
1 stop4h 55m
$360
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Key Largo to Luis Munoz Marin Intl
Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Key Largo with our price prediction graph.
MIA-SJU
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 Key Largo to San Juan Luis Munoz Marin Intl Airport
KE9-SJU
MIA-SJU
What is the cheapest time of day to fly from KE9 to SJU?
Find hourly flight availability from Key Largo to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 18, 2026.
It’s typically best to fly out from Key Largo to San Juan Luis Munoz Marin Intl Airport in the evening. Doing so could potentially save you 10% on the flight price compared to flying in the morning, which is usually more expensive.
Weekly flight availability from Key Largo to San Juan Luis Munoz Marin Intl Airport
Explore weekly flight availability from Key Largo to Luis Munoz Marin Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 18, 2026.
The most flights from KE9 to SJU are scheduled on a Wednesday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 on average).
How much does it cost to fly round-trip from Key Largo to San Juan Luis Munoz Marin Intl Airport?
What is the cheapest day to fly from Key Largo to San Juan Luis Munoz Marin Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from Key Largo to Luis Munoz Marin Intl. Price data was last updated on July 11, 2026.
Travelers seeking maximum savings on their Key Largo to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Luis Munoz Marin Intl
Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated July 18, 2026.
Read reviews from past customers who have flown Southwest,Delta, andAmerican Airlines from Key Largo to San Juan Luis Munoz Marin Intl Airport. 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.
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Key Largo to Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Juan Luis Munoz Marin Intl Airport?
Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locationsFajardo
Luquillo
Rio Grande
Dorado
Humacao
Bayamón
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Key Largo to Luis Munoz Marin Intl
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Complete your trip
Complete your trip to Luis Munoz Marin Intl by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Key Largo to Luis Munoz Marin Intl by cabin class
Find flights from Key Largo to Luis Munoz Marin Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Luis Munoz Marin Intl
Explore flights to Luis Munoz Marin Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 18, 2026.
Key Largo and Luis Munoz Marin Intl flights
Browse other Key Largo and Luis Munoz Marin Intl flight options. Last updated on July 18, 2026.
Popular flight searches
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Key Largo to Luis Munoz Marin Intl flights
Consider these flights traveling from Key Largo to Luis Munoz Marin Intl.
Top 5 airlines flying from Key Largo to Luis Munoz Marin Intl
Discover the top 5 airlines that operate flights from Key Largo to Luis Munoz Marin Intl. 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 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$93 | Average$229 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$108 | Average$108 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$125 | Average$312 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$189 | Average$288 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$230 | Average$461 | FlexibilityNo cancel fee | On-time71% |