$74+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — MIA
Sep 3 — Sep 101
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 November, booked 20 days in advance, depart on a Monday or Wednesday 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 August 4, 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 August 4, 2026.
This Super.com deal was found by Cheapflights users on 8/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:11 pm -
Nonstop2h 44m
Fri 9/46:50 am -
Nonstop2h 54m
Deal found 8/1![Frontier logo]()
$111
This Frontier deal was found by Cheapflights users on 7/30. 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 8/208:11 pm -
Nonstop2h 44m
Sat 8/229:59 am -
Nonstop2h 54m
Deal found 7/30![Frontier logo]()
$113
This Frontier deal was found by Cheapflights users on 7/30. 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 10/127:42 pm -
Nonstop2h 32m
Sat 10/1710:00 am -
1 stop7h 14m
Deal found 7/30![Frontier logo]()
$115
This Frontier deal was found by Cheapflights users on 7/30. 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 9/194:12 pm -
1 stop20h 30m
Mon 9/2111:25 am -
Nonstop3h 08m
Deal found 7/30![Frontier logo]()
$116
This Priceline deal was found by Cheapflights users on 7/31. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:38 pm -
Nonstop2h 44m
Sat 9/59:59 am -
Nonstop2h 54m
Deal found 7/31![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:11 pm -
Nonstop2h 44m
Fri 9/1111:25 am -
Nonstop3h 08m
Deal found 8/2![Frontier logo]()
$118
This Super.com deal was found by Cheapflights users on 8/2. 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.
Fri 8/288:11 pm -
Nonstop2h 44m
Mon 8/316:50 am -
Nonstop2h 54m
Deal found 8/2![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:11 pm -
Nonstop2h 44m
Sat 9/127:55 am -
Nonstop3h 08m
Deal found 8/2![Frontier logo]()
$122
This Priceline deal was found by Cheapflights users on 8/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:49 am -
Nonstop2h 44m
Sun 9/66:50 am -
Nonstop2h 54m
Deal found 8/1![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:11 pm -
Nonstop2h 44m
Sat 9/125:22 am -
1 stop18h 08m
Deal found 8/2![Frontier logo]()
$124
This Southwest deal was found by Cheapflights users on 8/3. 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 9/611:55 am -
Nonstop2h 30m
Fri 9/115:45 am -
Nonstop2h 35m
Deal found 8/3![Southwest logo]()
$169
This Southwest deal was found by Cheapflights users on 8/3. 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 9/611:55 am -
Nonstop2h 30m
Thu 10/85:20 am -
Nonstop2h 45m
Deal found 8/3![Southwest logo]()
$180
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 August 4, 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 August 4, 2026.
This United Airlines deal was found by Cheapflights users on 7/30. 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 11/76:24 pm -
Nonstop2h 35m
Mon 11/168:45 am -
Nonstop3h 06m
Deal found 7/30![United Airlines logo]()
$169
This Southwest deal was found by Cheapflights users on 7/30. 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 9/96:25 pm -
Nonstop2h 30m
Sat 9/197:45 am -
1 stop11h 35m
Deal found 7/30![Southwest logo]()
$185
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:36 pm -
1 stop5h 31m
Mon 8/247:45 pm -
1 stop5h 07m
Deal found 7/30![Delta logo]()
$198
This United Airlines deal was found by Cheapflights users on 7/31. 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 12/82:40 pm -
Nonstop2h 25m
Mon 12/148:45 am -
Nonstop3h 10m
Deal found 7/31![United Airlines logo]()
$191
This Southwest deal was found by Cheapflights users on 8/2. 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 9/166:25 pm -
Nonstop2h 30m
Wed 9/236:45 am -
Nonstop2h 35m
Deal found 8/2![Southwest logo]()
$191
This Delta deal was found by Cheapflights users on 8/2. 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 9/55:09 pm -
1 stop6h 38m
Tue 9/152:15 pm -
1 stop7h 59m
Deal found 8/2![Delta logo]()
$204
This United Airlines deal was found by Cheapflights users on 7/31. 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 11/42:45 pm -
Nonstop2h 35m
Mon 11/98:45 am -
Nonstop3h 06m
Deal found 7/31![United Airlines logo]()
$191
This Southwest deal was found by Cheapflights users on 7/30. 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 10/223:00 pm -
2 stops6h 55m
Tue 11/39:30 am -
1 stop5h 45m
Deal found 7/30![Southwest logo]()
$194
This Delta deal was found by Cheapflights users on 7/31. 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 12/86:13 pm -
1 stop5h 44m
Mon 12/147:45 pm -
1 stop5h 14m
Deal found 7/31![Delta logo]()
$211
This United Airlines deal was found by Cheapflights users on 7/31. 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 11/38:00 am -
Nonstop2h 33m
Fri 11/66:35 am -
Nonstop3h 06m
Deal found 7/31![United Airlines logo]()
$196
This Southwest deal was found by Cheapflights users on 8/3. 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 9/86:25 pm -
Nonstop2h 30m
Tue 9/159:15 am -
2 stops9h 30m
Deal found 8/3![Southwest logo]()
$206
This Delta deal was found by Cheapflights users on 8/1. 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 9/125:26 pm -
1 stop6h 29m
Tue 9/1510:30 am -
1 stop7h 00m
Deal found 8/1![Delta logo]()
$211
This Southwest deal was found by Cheapflights users on 8/1. 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.
Tue 9/1511:00 am -
2 stops8h 15m
Tue 9/226:45 am -
Nonstop2h 35m
Deal found 8/1![Southwest logo]()
$206
This Southwest deal was found by Cheapflights users on 7/31. 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 11/95:55 am -
1 stop9h 30m
Fri 11/135:05 am -
Nonstop2h 45m
Deal found 7/31![Southwest logo]()
$206
This United Airlines deal was found by Cheapflights users on 7/30. 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 11/118:00 am -
Nonstop2h 33m
Sun 11/156:35 am -
Nonstop3h 06m
Deal found 7/30![United Airlines logo]()
$258
This Southwest deal was found by Cheapflights users on 8/2. 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.
Mon 10/129:35 pm -
1 stop12h 15m
Fri 10/167:10 am -
2 stops7h 00m
Deal found 8/2![Southwest logo]()
$227
This United Airlines deal was found by Cheapflights users on 8/2. 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 10/117:55 am -
Nonstop2h 44m
Wed 10/148:45 am -
Nonstop2h 52m
Deal found 8/2![United Airlines logo]()
$259
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:45 pm -
Nonstop2h 35m
Sun 11/228:45 am -
Nonstop3h 06m
Deal found 8/3![United Airlines logo]()
$274
This United Airlines deal was found by Cheapflights users on 7/30. 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 10/126:35 pm -
Nonstop2h 44m
Sat 10/178:45 am -
Nonstop2h 52m
Deal found 7/30![United Airlines logo]()
$313
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/293:20 pm -
Nonstop2h 34m
Thu 12/316:25 am -
Nonstop3h 05m
Deal found 8/3![United Airlines logo]()
$327
Last-minute flights from Houston to Key LargoDiscover last-minute flight deals from Houston to Key Largo. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Key Largo. Data last updated August 4, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/30. 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 8/208:11 pm -
Nonstop2h 44m
Sat 8/229:59 am -
Nonstop2h 54m
Deal found 7/30![Frontier logo]()
$113
This Frontier deal was found by Cheapflights users on 7/30. 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 8/2212:38 pm -
Nonstop2h 44m
Sat 8/295:28 pm -
1 stop5h 46m
Deal found 7/30![Frontier logo]()
$115
This Super.com deal was found by Cheapflights users on 8/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:11 pm -
Nonstop2h 44m
Fri 9/46:50 am -
Nonstop2h 54m
Deal found 8/1![Frontier logo]()
$111
This Super.com deal was found by Cheapflights users on 8/2. 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.
Fri 8/288:11 pm -
Nonstop2h 44m
Mon 8/316:50 am -
Nonstop2h 54m
Deal found 8/2![Frontier logo]()
$120
This Priceline deal was found by Cheapflights users on 7/31. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:38 pm -
Nonstop2h 44m
Sat 9/59:59 am -
Nonstop2h 54m
Deal found 7/31![Frontier logo]()
$117
This Priceline deal was found by Cheapflights users on 8/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:49 am -
Nonstop2h 44m
Sun 9/66:50 am -
Nonstop2h 54m
Deal found 8/1![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:11 pm -
Nonstop2h 44m
Sat 9/125:22 am -
1 stop18h 08m
Deal found 8/2![Frontier logo]()
$124
This Southwest deal was found by Cheapflights users on 8/3. 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 9/611:55 am -
Nonstop2h 30m
Fri 9/115:45 am -
Nonstop2h 35m
Deal found 8/3![Southwest logo]()
$169
This Southwest deal was found by Cheapflights users on 8/3. 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 9/611:55 am -
Nonstop2h 30m
Thu 10/85:20 am -
Nonstop2h 45m
Deal found 8/3![Southwest logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:11 pm -
Nonstop2h 44m
Fri 9/1111:25 am -
Nonstop3h 08m
Deal found 8/2![Frontier logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:11 pm -
Nonstop2h 44m
Sat 9/127:55 am -
Nonstop3h 08m
Deal found 8/2![Frontier logo]()
$122
This Frontier deal was found by Cheapflights users on 7/30. 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 9/194:12 pm -
1 stop20h 30m
Mon 9/2111:25 am -
Nonstop3h 08m
Deal found 7/30![Frontier logo]()
$116
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 August 4, 2026.
Search for one-way flight options from Houston to Key Largo. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
This Super.com deal was found by Cheapflights users on 7/30. 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 8/209:29 am -
1 stop5h 44m
Deal found 7/30![Frontier logo]()
$74
This Expedia deal was found by Cheapflights users on 7/30. 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.
Mon 8/249:29 am -
1 stop5h 44m
Deal found 7/30![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/16:00 am -
1 stop6h 32m
Deal found 7/31![Frontier logo]()
$77
This Frontier deal was found by Cheapflights users on 8/1. 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 9/512:38 pm -
Nonstop2h 44m
Deal found 8/1![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/254:32 pm -
1 stop29h 33m
Deal found 7/31![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 7/30. 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 9/1610:30 am -
1 stop13h 16m
Deal found 7/30![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 10/39:04 pm -
1 stop17h 20m
Deal found 7/31![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 8/2. 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.
Fri 8/148:37 pm -
Nonstop2h 44m
Deal found 8/2![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/294:32 pm -
1 stop20h 00m
Deal found 8/1![Frontier logo]()
$84
This Super.com deal was found by Cheapflights users on 7/31. 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 8/319:29 am -
1 stop5h 44m
Deal found 7/31![Frontier logo]()
$85
This Southwest deal was found by Cheapflights users on 8/3. 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 9/611:55 am -
Nonstop2h 30m
Deal found 8/3![Southwest logo]()
$85
This Southwest deal was found by Cheapflights users on 8/4. 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 8/276:30 pm -
Nonstop2h 25m
Deal found 8/4![Southwest logo]()
$96
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 August 4, 2026.
Round-trip from | $111 (Super.com) |
|---|---|
One-way from | $74 (Super.com) |
Popular in | June |
Cheapest in | October |
Average price | $193 |
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 August 4, 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
Sat 11/7
6:24 pm-9:59 pm
Nonstop2h 35m
Miami
Mon 11/16
8:45 am-10:51 am
Nonstop3h 06m
$169
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Wed 9/9
6:25 pm-9:55 pm
Nonstop2h 30m
Miami
Sat 9/19
7:45 am-6:20 pm
1 stop11h 35m
$185
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Tue 12/8
2:40 pm-6:05 pm
Nonstop2h 25m
Miami
Mon 12/14
8:45 am-10:55 am
Nonstop3h 10m
$191
Quickest round-trip
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Wed 9/16
6:25 pm-9:55 pm
Nonstop2h 30m
Miami
Wed 9/23
6:45 am-8:20 am
Nonstop2h 35m
$191
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Wed 11/4
2:45 pm-6:20 pm
Nonstop2h 35m
Miami
Mon 11/9
8:45 am-10:51 am
Nonstop3h 06m
$191
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Thu 10/22
3:00 pm-10:55 pm
2 stops6h 55m
Miami
Tue 11/3
9:30 am-2:15 pm
1 stop5h 45m
$194
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Tue 11/3
8:00 am-11:33 am
Nonstop2h 33m
Miami
Fri 11/6
6:35 am-8:41 am
Nonstop3h 06m
$196
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Fri 8/21
6:36 pm-1:07 am
1 stop5h 31m
Miami
Mon 8/24
7:45 pm-11:52 pm
1 stop5h 07m
$198
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Sat 9/5
5:09 pm-12:47 am
1 stop6h 38m
Miami
Tue 9/15
2:15 pm-9:14 pm
1 stop7h 59m
$204
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Tue 9/8
6:25 pm-9:55 pm
Nonstop2h 30m
Miami
Tue 9/15
9:15 am-5:45 pm
2 stops9h 30m
$206
Showing 1-10 of 43 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 August 4, 2026.
It’s optimal to fly from Houston to Key Largo in the evening. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the morning.
How much does it cost to fly round-trip from Houston to Key Largo?
Airfare is below average for this route at the moment.
Houston to Key Largo flights typically cost between $135 and $258 in August.The cheapest round-trip price found within the last 5 days was $111 on Frontier (Aug 28-Sep 4).
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 August 1, 2026.
Travelers seeking maximum savings on their Houston to Key Largo flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Key Largo
Get insights into the airlines that provide service to Key Largo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key Largo. Reviews last updated August 4, 2026.
See what other customers who have flown with Southwest,United Airlines, andJetBlue 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.
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
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
See prices for flight routes from nearby airports that may be better suited for you.
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 August 4, 2026.
Popular flight searches
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Houston to Key Largo flights
Consider these flights traveling from Houston to Key Largo.
Top 6 airlines flying from Houston to Key Largo
Discover the top 6 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 August 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$178 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$346 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$116 | Average$267 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$129 | Average$370 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$133 | Average$332 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$169 | Average$329 | FlexibilityNo cancel fee | On-time63% |