$49+ Cheap flights from Houston 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — MIA
Apr 21 — Apr 281
Round-trip
1 adult, Economy
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Find cheap flights from Houston 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.Cheapflights Tip: The best prices from Houston to Key Largo are usually found in October or September, booked 20 days in advance, depart on a Sunday or Monday and return on a Wednesday
Cheap flight deals from Houston to Key Largo
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Best
Last-minute
One-way
Cheapest flights from Houston to Key LargoExplore the most affordable flight options available from Houston to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 22, 2026.
Explore the most affordable flight options available from Houston to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 22, 2026.
This CheapOair deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/44:53 pm
IAH
- MIA
Nonstop2h 29m
Frontier
Thu 4/911:22 am
MIA
- IAH
Nonstop3h 20m
Frontier
Deal found 3/20![Frontier logo]()
$86
This Super.com deal was found by Cheapflights users on 3/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/89:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Sun 5/106:00 am
MIA
- IAH
Nonstop3h 18m
Frontier
Deal found 3/18![Frontier logo]()
$87
This CheapOair deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:17 pm
IAH
- MIA
Nonstop2h 32m
Multiple Airlines
Mon 5/116:00 am
MIA
- IAH
Nonstop3h 18m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$89
This Super.com deal was found by Cheapflights users on 3/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:24 pm
IAH
- MIA
Nonstop2h 20m
Spirit Airlines
Sat 4/119:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Deal found 3/18![Spirit Airlines logo]()
$90
This Super.com deal was found by Cheapflights users on 3/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Mon 5/186:00 am
MIA
- IAH
Nonstop3h 18m
Frontier
Deal found 3/20![Frontier logo]()
$91
This Frontier deal was found by Cheapflights users on 3/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/122:22 pm
IAH
- MIA
Nonstop2h 29m
Frontier
Thu 4/165:35 pm
MIA
- IAH
Nonstop3h 20m
Frontier
Deal found 3/21![Frontier logo]()
$92
This CheapOair deal was found by Cheapflights users on 3/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:24 pm
IAH
- MIA
Nonstop2h 20m
Multiple Airlines
Thu 4/911:22 am
MIA
- IAH
Nonstop3h 20m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/122:22 pm
IAH
- MIA
Nonstop2h 29m
Multiple Airlines
Wed 4/156:30 am
MIA
- IAH
Nonstop2h 53m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:24 pm
IAH
- MIA
Nonstop2h 20m
Spirit Airlines
Wed 4/156:30 am
MIA
- IAH
Nonstop2h 53m
Spirit Airlines
Deal found 3/21![Spirit Airlines logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:00 pm
IAH
- MIA
Nonstop2h 32m
Multiple Airlines
Sun 5/106:00 am
MIA
- IAH
Nonstop3h 18m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$96
This CheapOair deal was found by Cheapflights users on 3/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:50 pm
IAH
- MIA
Nonstop2h 29m
Multiple Airlines
Mon 4/206:30 am
MIA
- IAH
Nonstop2h 53m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$97
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/293:05 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Sat 5/25:40 pm
MIA
- HOU
Nonstop2h 50m
Southwest
Deal found 3/22![Southwest logo]()
$217
Best flights from Houston to Key LargoDiscover carefully curated flight deals from Houston to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 22, 2026.
Discover carefully curated flight deals from Houston to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 22, 2026.
This Spirit deal was found by Cheapflights users on 3/17. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:17 pm
IAH
- MIA
Nonstop2h 32m
Spirit Airlines
Sat 6/66:44 am
MIA
- IAH
Nonstop2h 53m
Spirit Airlines
Deal found 3/17![Spirit Airlines logo]()
$119
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/63:05 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Wed 5/136:40 am
MIA
- HOU
2 stops8h 20m
Southwest
Deal found 3/19![Southwest logo]()
$232
This United Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:32 am
IAH
- MIA
Nonstop2h 37m
United Airlines
Sat 4/186:15 am
MIA
- IAH
Nonstop3h 06m
United Airlines
Deal found 3/22![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 3/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:00 am
HOU
- MIA
1 stop5h 11m
Delta
Mon 5/117:05 am
MIA
- HOU
1 stop6h 06m
Delta
Deal found 3/22![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 3/17. 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.
Sat 5/22:40 pm
HOU
- MIA
2 stops6h 25m
Southwest
Sat 5/99:55 am
MIA
- HOU
1 stop8h 05m
Southwest
Deal found 3/17![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 3/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:31 pm
IAH
- MIA
Nonstop2h 38m
United Airlines
Sun 5/176:15 am
MIA
- IAH
Nonstop3h 05m
United Airlines
Deal found 3/20![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 3/17. 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.
Sat 5/911:30 am
HOU
- MIA
1 stop7h 50m
Southwest
Mon 5/115:30 am
MIA
- HOU
Nonstop2h 50m
Southwest
Deal found 3/17![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:10 am
HOU
- MIA
1 stop6h 30m
Southwest
Mon 4/205:30 am
MIA
- HOU
Nonstop2h 50m
Southwest
Deal found 3/19![Southwest logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:09 pm
IAH
- MIA
Nonstop2h 38m
United Airlines
Sun 4/196:05 am
MIA
- IAH
Nonstop3h 06m
United Airlines
Deal found 3/22![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 3/17. 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.
Wed 5/69:48 am
IAH
- MIA
1 stop4h 47m
Delta
Mon 6/88:05 am
MIA
- IAH
1 stop7h 34m
Delta
Deal found 3/17![Delta logo]()
$328
This Southwest deal was found by Cheapflights users on 3/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/113:10 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Fri 5/155:30 am
MIA
- HOU
Nonstop2h 50m
Southwest
Deal found 3/20![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 3/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:31 pm
IAH
- MIA
Nonstop2h 38m
United Airlines
Tue 5/1910:50 am
MIA
- IAH
Nonstop3h 06m
United Airlines
Deal found 3/17![United Airlines logo]()
$287
This United Airlines deal was found by Cheapflights users on 3/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/212:08 pm
IAH
- MIA
Nonstop2h 38m
United Airlines
Tue 5/510:50 am
MIA
- IAH
Nonstop3h 06m
United Airlines
Deal found 3/17![United Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:00 am
HOU
- MIA
2 stops7h 50m
Southwest
Mon 5/117:15 pm
MIA
- HOU
1 stop5h 50m
Southwest
Deal found 3/19![Southwest logo]()
$262
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/203:10 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Fri 4/243:05 pm
MIA
- HOU
1 stop7h 05m
Southwest
Deal found 3/19![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 3/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:50 pm
IAH
- MIA
Nonstop2h 38m
United Airlines
Mon 4/136:15 am
MIA
- IAH
Nonstop3h 06m
United Airlines
Deal found 3/19![United Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 3/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:32 am
IAH
- MIA
Nonstop2h 37m
United Airlines
Thu 4/1612:50 pm
MIA
- IAH
Nonstop3h 07m
United Airlines
Deal found 3/20![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/153:05 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Sat 4/186:15 am
MIA
- HOU
2 stops8h 30m
Southwest
Deal found 3/22![Southwest logo]()
$272
This United Airlines deal was found by Cheapflights users on 3/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:25 am
IAH
- MIA
Nonstop2h 47m
United Airlines
Fri 6/512:29 pm
MIA
- IAH
Nonstop2h 54m
United Airlines
Deal found 3/18![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/83:10 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Sun 5/107:00 am
MIA
- HOU
1 stop6h 55m
Southwest
Deal found 3/21![Southwest logo]()
$322
This Southwest deal was found by Cheapflights users on 3/17. 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 4/2410:20 am
HOU
- MIA
2 stops11h 40m
Southwest
Mon 4/275:30 am
MIA
- HOU
Nonstop2h 50m
Southwest
Deal found 3/17![Southwest logo]()
$328
Last-minute flights from Houston to Key LargoDiscover last-minute flight deals from Houston to Key Largo. Data last updated March 22, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Key Largo. Data last updated March 22, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/282:45 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Tue 4/286:15 am
MIA
- HOU
Nonstop2h 50m
Southwest
Deal found 3/21![Southwest logo]()
$332
This Southwest deal was found by Cheapflights users on 3/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/12:45 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Wed 4/86:15 am
MIA
- HOU
Nonstop2h 50m
Southwest
Deal found 3/18![Southwest logo]()
$307
This Frontier deal was found by Cheapflights users on 3/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/44:53 pm
IAH
- MIA
Nonstop2h 29m
Frontier
Thu 4/911:22 am
MIA
- IAH
Nonstop3h 20m
Frontier
Deal found 3/20![Frontier logo]()
$86
This CheapOair deal was found by Cheapflights users on 3/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:24 pm
IAH
- MIA
Nonstop2h 20m
Multiple Airlines
Thu 4/911:22 am
MIA
- IAH
Nonstop3h 20m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$93
This CheapOair deal was found by Cheapflights users on 3/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:24 pm
IAH
- MIA
Nonstop2h 20m
Multiple Airlines
Sat 4/119:17 pm
MIA
- IAH
Nonstop3h 20m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$87
This Super.com deal was found by Cheapflights users on 3/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:24 pm
IAH
- MIA
Nonstop2h 20m
Spirit Airlines
Sat 4/119:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Deal found 3/18![Spirit Airlines logo]()
$90
This CheapOair deal was found by Cheapflights users on 3/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/92:27 pm
IAH
- MIA
Nonstop2h 29m
Multiple Airlines
Sun 4/196:30 am
MIA
- IAH
Nonstop2h 53m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$91
This Frontier deal was found by Cheapflights users on 3/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/122:22 pm
IAH
- MIA
Nonstop2h 29m
Frontier
Thu 4/165:35 pm
MIA
- IAH
Nonstop3h 20m
Frontier
Deal found 3/21![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/122:22 pm
IAH
- MIA
Nonstop2h 29m
Multiple Airlines
Wed 4/156:30 am
MIA
- IAH
Nonstop2h 53m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:24 pm
IAH
- MIA
Nonstop2h 20m
Spirit Airlines
Wed 4/156:30 am
MIA
- IAH
Nonstop2h 53m
Spirit Airlines
Deal found 3/21![Spirit Airlines logo]()
$95
This CheapOair deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:50 pm
IAH
- MIA
Nonstop2h 29m
Multiple Airlines
Sun 4/196:30 am
MIA
- IAH
Nonstop2h 53m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$89
This CheapOair deal was found by Cheapflights users on 3/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:50 pm
IAH
- MIA
Nonstop2h 29m
Multiple Airlines
Mon 4/206:30 am
MIA
- IAH
Nonstop2h 53m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$97
One-way flights from Houston to Key LargoSearch for one-way flight options from Houston to Key Largo. Find affordable one-way fares based on user searches. Data last updated March 22, 2026.
Search for one-way flight options from Houston to Key Largo. Find affordable one-way fares based on user searches. Data last updated March 22, 2026.
This CheapOair deal was found by Cheapflights users on 3/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/52:22 pm
IAH
- MIA
Nonstop2h 29m
Frontier
Deal found 3/17![Frontier logo]()
$49
This CheapOair deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Deal found 3/20![Frontier logo]()
$50
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:00 pm
IAH
- MIA
Nonstop2h 32m
Spirit Airlines
Deal found 3/19![Spirit Airlines logo]()
$53
This Super.com deal was found by Cheapflights users on 3/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:24 pm
IAH
- MIA
Nonstop2h 20m
Spirit Airlines
Deal found 3/20![Spirit Airlines logo]()
$59
This CheapOair deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/65:24 pm
IAH
- MIA
Nonstop2h 20m
Spirit Airlines
Deal found 3/20![Spirit Airlines logo]()
$60
This Booking.com deal was found by Cheapflights users on 3/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/35:24 pm
IAH
- MIA
Nonstop2h 20m
Spirit Airlines
Deal found 3/18![Spirit Airlines logo]()
$61
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:06 pm
IAH
- MIA
1 stop7h 43m
Frontier
Deal found 3/18![Frontier logo]()
$62
This WAYA deal was found by Cheapflights users on 3/21. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:10 am
IAH
- MIA
1 stop7h 00m
Frontier
Deal found 3/21![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:05 am
IAH
- MIA
1 stop17h 44m
Frontier
Deal found 3/17![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:14 pm
IAH
- MIA
1 stop5h 35m
Frontier
Deal found 3/17![Frontier logo]()
$66
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:35 pm
IAH
- MIA
1 stop8h 56m
Spirit Airlines
Deal found 3/17![Spirit Airlines logo]()
$67
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:05 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Deal found 3/22![Southwest logo]()
$100
Find flight deals from Houston to Key Largo
Keep the following information in mind while searching for Houston to Key Largo flight deals. Data was last updated March 22, 2026.
Round-trip from | $85 (Booking.com) |
|---|---|
One-way from | $49 (CheapOair) |
Popular in | March |
Cheapest in | October |
Average price | $243 |
Cheapflights Fare Finder
Customize your flight search to find flights from Houston 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 March 22, 2026.
Use the filters below to find and compare flights from Houston to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Wed 5/6
6:17 pm-9:49 pm
Nonstop2h 32m
Miami
Sat 6/6
6:44 am-8:37 am
Nonstop2h 53m
$119
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Wed 5/6
3:05 pm-6:20 pm
Nonstop2h 15m
Miami
Wed 5/13
6:40 am-2:00 pm
2 stops8h 20m
$232
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Sat 5/2
2:40 pm-10:05 pm
2 stops6h 25m
Miami
Sat 5/9
9:55 am-5:00 pm
1 stop8h 05m
$242
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Sat 5/9
11:30 am-8:20 pm
1 stop7h 50m
Miami
Mon 5/11
5:30 am-7:20 am
Nonstop2h 50m
$247
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Sat 4/18
8:10 am-3:40 pm
1 stop6h 30m
Miami
Mon 4/20
5:30 am-7:20 am
Nonstop2h 50m
$247
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Wed 4/15
7:32 am-11:09 am
Nonstop2h 37m
Miami
Sat 4/18
6:15 am-8:21 am
Nonstop3h 06m
$257
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Fri 5/15
6:31 pm-10:09 pm
Nonstop2h 38m
Miami
Sun 5/17
6:15 am-8:20 am
Nonstop3h 05m
$257
Quickest round-trip
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Mon 5/11
3:10 pm-6:25 pm
Nonstop2h 15m
Miami
Fri 5/15
5:30 am-7:20 am
Nonstop2h 50m
$257
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Wed 5/6
7:00 am-3:50 pm
2 stops7h 50m
Miami
Mon 5/11
7:15 pm-12:05 am
1 stop5h 50m
$262
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Mon 4/20
3:10 pm-6:25 pm
Nonstop2h 15m
Miami
Fri 4/24
3:05 pm-9:10 pm
1 stop7h 05m
$267
Showing 1-10 of 44 resultsSorted by cheapest first
Best time to book a flight from Houston to Key Largo
Have a flexible travel schedule? Discover the best time to fly to Key Largo from Houston with our price prediction graph.
IAH-MIA
HOU-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 Houston to Key Largo
HO1-KE9
IAH-MIA
HOU-MIA
How far ahead should I book a flight from Houston to Key Largo?
Use this chart to determine the optimal time to book a round-trip flight from Houston to Key Largo. Price data was last updated on March 13, 2026.
Booking 20 days in advance of your planned departure date is, on average, the best time to get cheap flights from Houston to Key Largo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Houston to Key Largo?
Currently, November is the cheapest month in which you can book a flight from Houston to Key Largo (average of $50). Flying from Houston to Key Largo in July is currently the most expensive (average of $98). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from HOU to KE9?
Find hourly flight availability from Houston to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 22, 2026.
It’s optimal to fly from Houston to Key Largo in the evening. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the morning.
What is the cheapest day to fly from Houston to Key Largo?
Use this chart to determine the cheapest time to fly round-trip from Houston to Key Largo. Price data was last updated on March 14, 2026.
Travelers seeking maximum savings on their Houston to Key Largo flight should consider departing on Tuesday at noon when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Houston to Key Largo
Explore weekly flight availability from Houston to Key Largo. 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 March 22, 2026.
The most flights from HO1 to KE9 are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).
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 March 22, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from Houston to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
Find useful and relevant information for your journey from Houston 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 Houston to Key Largo
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Complete your trip
Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Houston to Key Largo by cabin class
Find flights from Houston to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Houston and Key Largo flights
Browse other Houston and Key Largo flight options. Last updated on March 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Houston to Key Largo flights
Consider these flights traveling from Houston to Key Largo.
Top 7 airlines flying from Houston to Key Largo
Discover the top 7 airlines that operate flights from Houston 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 March 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$49 | Average$156 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$61 | Average$160 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$98 | Average$349 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$113 | Average$333 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$116 | Average$319 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$127 | Average$334 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$311 | FlexibilityNo cancel fee | On-time63% |