$52+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — MIA
Jun 5 — Jun 121
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 75 days in advance, depart on a Monday or Sunday and return on a Thursday
Cheap flight deals from Houston to Key Largo
Cheapest
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 May 6, 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 May 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 5/266:00 am
IAH
- MIA
1 stop6h 20m
Frontier
Thu 5/289:15 am
MIA
- IAH
Nonstop3h 27m
Frontier
Deal found 5/4![Frontier logo]()
$91
This Frontier deal was found by Cheapflights users on 5/3. 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 8/88:37 pm
IAH
- MIA
Nonstop2h 44m
Frontier
Wed 8/126:00 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 5/3![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 5/1. 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.
Mon 6/19:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Fri 6/59:15 am
MIA
- IAH
Nonstop3h 27m
Frontier
Deal found 5/1![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/212:57 pm
IAH
- MIA
Nonstop2h 30m
Frontier
Tue 6/235:26 pm
MIA
- IAH
1 stop17h 41m
Frontier
Deal found 5/4![Frontier logo]()
$95
This eDestinos deal was found by Cheapflights users on 5/2. 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 5/179:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Wed 6/39:15 am
MIA
- IAH
Nonstop3h 27m
Frontier
Deal found 5/2![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 5/1. 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.
Sat 5/162:00 pm
IAH
- MIA
Nonstop2h 28m
Multiple Airlines
Sat 5/239:15 am
MIA
- IAH
Nonstop3h 27m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$97
This Frontier deal was found by Cheapflights users on 5/1. 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 5/2310:51 am
IAH
- MIA
1 stop8h 37m
Frontier
Thu 5/289:15 am
MIA
- IAH
Nonstop3h 27m
Frontier
Deal found 5/1![Frontier logo]()
$98
This Frontier deal was found by Cheapflights users on 5/2. 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 5/234:08 pm
IAH
- MIA
1 stop29h 04m
Frontier
Mon 5/259:15 am
MIA
- IAH
Nonstop3h 27m
Frontier
Deal found 5/2![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/89:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Fri 6/126:00 am
MIA
- IAH
Nonstop3h 02m
Frontier
Deal found 5/4![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/204:20 pm
IAH
- MIA
Nonstop2h 28m
Multiple Airlines
Sun 5/249:15 am
MIA
- IAH
Nonstop3h 27m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$102
This CheapOair deal was found by Cheapflights users on 5/1. 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 5/194:20 pm
IAH
- MIA
Nonstop2h 28m
Multiple Airlines
Wed 6/39:15 am
MIA
- IAH
Nonstop3h 27m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$103
This Southwest deal was found by Cheapflights users on 5/5. 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 6/23:05 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Tue 6/235:45 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 5/5![Southwest logo]()
$169
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 May 6, 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 May 6, 2026.
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/24:50 pm
IAH
- MIA
Nonstop2h 43m
United Airlines
Tue 6/912:29 pm
MIA
- IAH
Nonstop2h 54m
United Airlines
Deal found 5/4![United Airlines logo]()
$169
This Southwest deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/82:10 pm
HOU
- MIA
1 stop7h 25m
Southwest
Wed 6/105:45 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 5/6![Southwest logo]()
$194
This Delta deal was found by Cheapflights users on 5/1. 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 6/167:02 am
IAH
- MIA
1 stop5h 02m
Delta
Wed 6/247:10 am
MIA
- IAH
1 stop5h 13m
Delta
Deal found 5/1![Delta logo]()
$197
This Spirit deal was found by Cheapflights users on 5/2. 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.
Thu 9/179:58 am
IAH
- MIA
1 stop7h 36m
Spirit Airlines
Thu 9/248:18 pm
MIA
- IAH
Nonstop2h 53m
Spirit Airlines
Deal found 5/2![Spirit Airlines logo]()
$258
This United Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/37:01 pm
IAH
- MIA
Nonstop2h 39m
United Airlines
Wed 6/106:30 am
MIA
- IAH
Nonstop2h 54m
United Airlines
Deal found 5/6![United Airlines logo]()
$169
This Southwest deal was found by Cheapflights users on 5/5. 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 6/27:35 am
HOU
- MIA
1 stop8h 15m
Southwest
Tue 6/911:25 am
MIA
- HOU
2 stops9h 40m
Southwest
Deal found 5/5![Southwest logo]()
$194
This Delta deal was found by Cheapflights users on 5/2. 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 6/212:04 pm
IAH
- MIA
1 stop6h 54m
Delta
Wed 6/36:33 am
MIA
- IAH
1 stop7h 47m
Delta
Deal found 5/2![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 5/5. 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 5/262:45 pm
IAH
- MIA
1 stop7h 26m
Delta
Tue 6/26:00 am
MIA
- IAH
1 stop6h 09m
Delta
Deal found 5/5![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 5/1. 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 5/262:45 pm
IAH
- MIA
1 stop7h 26m
Delta
Sat 5/306:33 am
MIA
- IAH
1 stop10h 19m
Delta
Deal found 5/1![Delta logo]()
$208
This United Airlines deal was found by Cheapflights users on 5/2. 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.
Sun 5/244:50 pm
IAH
- MIA
Nonstop2h 43m
United Airlines
Sat 5/306:20 am
MIA
- IAH
Nonstop2h 54m
United Airlines
Deal found 5/2![United Airlines logo]()
$244
This Delta deal was found by Cheapflights users on 5/1. 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 6/65:25 pm
IAH
- MIA
1 stop6h 18m
Delta
Wed 6/106:31 am
MIA
- IAH
1 stop7h 44m
Delta
Deal found 5/1![Delta logo]()
$208
This Southwest deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/189:00 pm
HOU
- MIA
Nonstop2h 25m
Southwest
Tue 6/2311:45 am
MIA
- HOU
2 stops12h 50m
Southwest
Deal found 5/4![Southwest logo]()
$264
This Southwest deal was found by Cheapflights users on 5/4. 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 6/13:10 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Fri 6/55:10 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 5/4![Southwest logo]()
$288
This Delta deal was found by Cheapflights users on 5/2. 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 5/168:29 am
IAH
- MIA
1 stop5h 27m
Delta
Sat 5/236:33 am
MIA
- IAH
1 stop10h 19m
Delta
Deal found 5/2![Delta logo]()
$278
This Southwest deal was found by Cheapflights users on 5/2. 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 5/2710:25 am
HOU
- MIA
1 stop5h 25m
Southwest
Sat 5/307:00 am
MIA
- HOU
2 stops7h 55m
Southwest
Deal found 5/2![Southwest logo]()
$313
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:56 pm
IAH
- MIA
Nonstop2h 43m
United Airlines
Mon 9/141:30 pm
MIA
- IAH
Nonstop2h 55m
United Airlines
Deal found 5/4![United Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:29 am
IAH
- MIA
1 stop5h 27m
Delta
Sun 5/246:00 am
MIA
- IAH
1 stop6h 09m
Delta
Deal found 5/6![Delta logo]()
$287
This Southwest deal was found by Cheapflights users on 5/5. 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 6/159:00 pm
HOU
- MIA
Nonstop2h 25m
Southwest
Sat 6/205:40 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 5/5![Southwest logo]()
$322
This Southwest deal was found by Cheapflights users on 5/3. 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 6/167:25 pm
HOU
- MIA
Nonstop2h 25m
Southwest
Fri 6/195:10 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 5/3![Southwest logo]()
$323
This Southwest deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/119:00 pm
HOU
- MIA
Nonstop2h 25m
Southwest
Thu 6/255:10 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 5/2![Southwest logo]()
$347
This Southwest deal was found by Cheapflights users on 5/1. 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 5/277:35 am
HOU
- MIA
1 stop8h 15m
Southwest
Thu 6/45:25 am
MIA
- HOU
2 stops9h 20m
Southwest
Deal found 5/1![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 5/3. 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.
Sun 8/98:35 am
HOU
- MIA
2 stops8h 25m
Southwest
Wed 8/127:30 am
MIA
- HOU
1 stop9h 40m
Southwest
Deal found 5/3![Southwest logo]()
$368
This Southwest deal was found by Cheapflights users on 5/2. 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 6/247:25 pm
HOU
- MIA
Nonstop2h 25m
Southwest
Sun 6/285:00 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 5/2![Southwest logo]()
$377
This Southwest deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:55 am
HOU
- MIA
2 stops7h 00m
Southwest
Sun 10/255:40 am
MIA
- HOU
1 stop10h 15m
Southwest
Deal found 5/6![Southwest logo]()
$378
Last-minute flights from Houston to Key LargoDiscover last-minute flight deals from Houston to Key Largo. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Key Largo. Data last updated May 6, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 5/2. 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.
Mon 5/119:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Fri 5/156:00 am
MIA
- IAH
Nonstop3h 18m
Frontier
Deal found 5/2![Frontier logo]()
$143
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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.
Mon 5/114:20 pm
IAH
- MIA
Nonstop2h 28m
Spirit Airlines
Thu 5/142:25 pm
MIA
- IAH
Nonstop2h 51m
Spirit Airlines
Deal found 5/1![Spirit Airlines logo]()
$152
This Frontier deal was found by Cheapflights users on 5/2. 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 5/126:05 am
IAH
- MIA
1 stop6h 15m
Frontier
Wed 5/279:15 am
MIA
- IAH
Nonstop3h 27m
Frontier
Deal found 5/2![Frontier logo]()
$144
This Expedia deal was found by Cheapflights users on 5/1. 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 5/134:20 pm
IAH
- MIA
Nonstop2h 28m
Spirit Airlines
Wed 5/202:25 pm
MIA
- IAH
Nonstop2h 51m
Spirit Airlines
Deal found 5/1![Spirit Airlines logo]()
$141
This Travelocity deal was found by Cheapflights users on 5/1. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/134:20 pm
IAH
- MIA
Nonstop2h 28m
Multiple Airlines
Sun 5/176:00 am
MIA
- IAH
Nonstop3h 18m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$148
This Expedia deal was found by Cheapflights users on 5/1. 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 5/134:20 pm
IAH
- MIA
Nonstop2h 28m
Spirit Airlines
Mon 5/182:25 pm
MIA
- IAH
Nonstop2h 51m
Spirit Airlines
Deal found 5/1![Spirit Airlines logo]()
$153
This Mytrip deal was found by Cheapflights users on 5/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Sun 5/249:15 am
MIA
- IAH
Nonstop3h 27m
Frontier
Deal found 5/1![Frontier logo]()
$123
This Frontier deal was found by Cheapflights users on 5/2. 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.
Fri 5/159:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Sun 5/176:00 am
MIA
- IAH
Nonstop3h 18m
Frontier
Deal found 5/2![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 5/1. 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.
Sat 5/162:00 pm
IAH
- MIA
Nonstop2h 28m
Multiple Airlines
Sat 5/239:15 am
MIA
- IAH
Nonstop3h 27m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 5/1. 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.
Sat 5/162:00 pm
IAH
- MIA
Nonstop2h 28m
Multiple Airlines
Sun 5/176:00 am
MIA
- IAH
Nonstop3h 18m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$133
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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.
Sat 5/162:00 pm
IAH
- MIA
Nonstop2h 28m
Spirit Airlines
Mon 5/182:25 pm
MIA
- IAH
Nonstop2h 51m
Spirit Airlines
Deal found 5/1![Spirit Airlines logo]()
$139
This CheapOair deal was found by Cheapflights users on 5/1. 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 5/162:00 pm
IAH
- MIA
Nonstop2h 28m
Spirit Airlines
Fri 5/2211:24 am
MIA
- IAH
Nonstop3h 01m
Spirit Airlines
Deal found 5/1![Spirit Airlines logo]()
$140
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 May 6, 2026.
Search for one-way flight options from Houston to Key Largo. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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.
Thu 6/44:20 pm
IAH
- MIA
Nonstop2h 28m
Spirit Airlines
Deal found 5/1![Spirit Airlines logo]()
$52
This Trip.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/96:30 am
IAH
- MIA
1 stop9h 01m
Frontier
Deal found 5/6![Frontier logo]()
$58
This CheapOair deal was found by Cheapflights users on 5/2. 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 7/78:37 pm
IAH
- MIA
Nonstop2h 44m
Frontier
Deal found 5/2![Frontier logo]()
$60
This Trip.com deal was found by Cheapflights users on 5/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/158:37 pm
IAH
- MIA
Nonstop2h 35m
Frontier
Deal found 5/4![Frontier logo]()
$61
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/35:45 am
IAH
- MIA
1 stop16h 02m
Frontier
Deal found 5/5![Frontier logo]()
$63
This Frontier deal was found by Cheapflights users on 5/4. 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.
Thu 7/98:37 pm
IAH
- MIA
Nonstop2h 44m
Frontier
Deal found 5/4![Frontier logo]()
$64
This Frontier deal was found by Cheapflights users on 5/1. 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.
Mon 5/189:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Deal found 5/1![Frontier logo]()
$65
This Frontier deal was found by Cheapflights users on 5/5. 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.
Mon 7/68:37 pm
IAH
- MIA
Nonstop2h 44m
Frontier
Deal found 5/5![Frontier logo]()
$68
This Frontier deal was found by Cheapflights users on 5/5. 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.
Fri 6/59:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Deal found 5/5![Frontier logo]()
$69
This Frontier deal was found by Cheapflights users on 5/2. 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 6/79:17 pm
IAH
- MIA
Nonstop2h 27m
Frontier
Deal found 5/2![Frontier logo]()
$70
This Southwest deal was found by Cheapflights users on 5/5. 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 6/97:25 pm
HOU
- MIA
Nonstop2h 25m
Southwest
Deal found 5/5![Southwest logo]()
$85
This Southwest deal was found by Cheapflights users on 5/3. 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 6/247:35 am
HOU
- MIA
1 stop7h 50m
Southwest
Deal found 5/3![Southwest logo]()
$95
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 May 6, 2026.
Round-trip from | $91 (Kiwi.com) |
|---|---|
One-way from | $52 (Kiwi.com) |
Popular in | March |
Cheapest in | October |
Average price | $199 |
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 May 6, 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
Tue 6/2
4:50 pm-8:33 pm
Nonstop2h 43m
Miami
Tue 6/9
12:29 pm-2:23 pm
Nonstop2h 54m
$169
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Wed 6/3
7:01 pm-10:40 pm
Nonstop2h 39m
Miami
Wed 6/10
6:30 am-8:24 am
Nonstop2h 54m
$169
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Mon 6/8
2:10 pm-10:35 pm
1 stop7h 25m
Miami
Wed 6/10
5:45 am-7:20 am
Nonstop2h 35m
$194
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Tue 6/2
7:35 am-4:50 pm
1 stop8h 15m
Miami
Tue 6/9
11:25 am-8:05 pm
2 stops9h 40m
$194
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Tue 6/16
7:02 am-1:04 pm
1 stop5h 02m
Miami
Wed 6/24
7:10 am-11:23 am
1 stop5h 13m
$197
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Tue 6/2
12:04 pm-7:58 pm
1 stop6h 54m
Miami
Wed 6/3
6:33 am-1:20 pm
1 stop7h 47m
$197
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Tue 5/26
2:45 pm-11:11 pm
1 stop7h 26m
Miami
Tue 6/2
6:00 am-11:09 am
1 stop6h 09m
$197
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Tue 5/26
2:45 pm-11:11 pm
1 stop7h 26m
Miami
Sat 5/30
6:33 am-3:52 pm
1 stop10h 19m
$208
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Sat 6/6
5:25 pm-12:43 am
1 stop6h 18m
Miami
Wed 6/10
6:31 am-1:15 pm
1 stop7h 44m
$208
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Sun 5/24
4:50 pm-8:33 pm
Nonstop2h 43m
Miami
Sat 5/30
6:20 am-8:14 am
Nonstop2h 54m
$244
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
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 May 6, 2026.
It’s optimal to fly from Houston to Key Largo in the evening. By choosing this option you can save up to 40% 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 May 2, 2026.
Travelers seeking maximum savings on their Houston to Key Largo flight should consider departing on Monday evenings 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.
How much does it cost to fly round-trip from Houston to Key Largo?
Reviews of airlines servicing Key Largo
Get insights into the airlines that provide service to Key Largo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key Largo. Reviews last updated May 6, 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.
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
8.0
Entertainment
7.5
Crew
8.6
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
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Houston and Key Largo flights
Browse other Houston and Key Largo flight options. Last updated on May 6, 2026.
Popular flight searches
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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 May 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$48 | Average$153 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$60 | Average$166 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$98 | Average$359 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$110 | Average$342 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$116 | Average$322 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$127 | Average$331 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$141 | Average$302 | FlexibilityNo cancel fee | On-time63% |