$81+ Cheap flights from Key Largo, FL to Houston
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — HOU
Oct 20 — Oct 271
Round-trip
1 adult, Economy
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Find cheap flights from Key Largo to Houston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Key Largo to Houston are usually found in January or April, booked 80 days in advance, depart on a Thursday or Tuesday and return on a Monday
Cheap flight deals from Key Largo to Houston
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Cheapest flights from Key Largo to HoustonExplore the most affordable flight options available from Key Largo to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 20, 2026.
Explore the most affordable flight options available from Key Largo to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 20, 2026.
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:39 am -
Nonstop3h 08m
Mon 11/162:32 pm -
Nonstop2h 34m
Deal found 9/15![Frontier logo]()
$121
This Priceline deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:55 pm -
1 stop9h 28m
Mon 11/22:32 pm -
Nonstop2h 34m
Deal found 9/15![Frontier logo]()
$123
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:36 pm -
1 stop13h 46m
Sat 10/249:12 pm -
1 stop12h 03m
Deal found 9/16![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:05 am -
1 stop7h 17m
Wed 10/216:05 am -
1 stop7h 13m
Deal found 9/15![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:15 am -
1 stop7h 07m
Tue 10/2712:24 pm -
1 stop8h 07m
Deal found 9/15![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:36 pm -
1 stop9h 43m
Tue 10/2012:17 pm -
1 stop8h 12m
Deal found 9/15![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:15 am -
1 stop7h 07m
Wed 10/216:05 am -
1 stop7h 13m
Deal found 9/15![Frontier logo]()
$129
This Super.com deal was found by Cheapflights users on 9/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:55 am -
Nonstop3h 08m
Tue 10/62:18 pm -
Nonstop2h 41m
Deal found 9/19![Frontier logo]()
$130
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:36 pm -
1 stop9h 43m
Wed 10/2112:07 pm -
1 stop8h 22m
Deal found 9/16![Frontier logo]()
$131
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 11/611:39 am -
Nonstop3h 08m
Mon 11/96:05 am -
1 stop8h 20m
Deal found 9/17![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 9/18. 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.
Fri 10/2311:15 am -
Nonstop3h 00m
Wed 10/2812:19 pm -
1 stop8h 12m
Deal found 9/18![Frontier logo]()
$133
This Southwest deal was found by Cheapflights users on 9/17. 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 11/75:15 pm -
Nonstop2h 50m
Mon 11/98:25 pm -
Nonstop2h 25m
Deal found 9/17![Southwest logo]()
$157
Best flights from Key Largo to HoustonDiscover carefully curated flight deals from Key Largo to Houston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 20, 2026.
Discover carefully curated flight deals from Key Largo to Houston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 20, 2026.
This Southwest deal was found by Cheapflights users on 9/17. 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 11/75:15 pm -
Nonstop2h 50m
Mon 11/98:25 pm -
Nonstop2h 25m
Deal found 9/17![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Tue 11/1012:50 pm -
Nonstop3h 06m
Tue 11/1712:15 pm -
Nonstop2h 37m
Deal found 9/19![United Airlines logo]()
$169
This Frontier deal was found by Cheapflights users on 9/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:10 am -
1 stop11h 21m
Sun 12/66:00 am -
1 stop14h 14m
Deal found 9/19![Frontier logo]()
$171
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:04 am -
1 stop5h 55m
Tue 10/66:20 pm -
1 stop5h 33m
Deal found 9/15![Delta logo]()
$211
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:40 am -
2 stops6h 25m
Wed 10/212:50 pm -
2 stops6h 25m
Deal found 9/17![Southwest logo]()
$175
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:45 am -
Nonstop2h 52m
Wed 10/217:55 am -
Nonstop2h 44m
Deal found 9/16![United Airlines logo]()
$191
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:40 am -
2 stops6h 25m
Wed 10/2810:55 am -
2 stops8h 10m
Deal found 9/16![Southwest logo]()
$186
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Sun 11/88:45 am -
Nonstop3h 06m
Tue 11/178:00 am -
Nonstop2h 33m
Deal found 9/19![United Airlines logo]()
$203
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:00 am -
2 stops7h 55m
Wed 10/2810:55 am -
2 stops8h 10m
Deal found 9/15![Southwest logo]()
$186
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:45 am -
Nonstop3h 06m
Thu 11/56:24 pm -
Nonstop2h 35m
Deal found 9/16![United Airlines logo]()
$204
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:27 pm -
1 stop6h 36m
Mon 1/41:15 pm -
1 stop6h 39m
Deal found 9/16![Delta logo]()
$248
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:20 am -
Nonstop2h 45m
Mon 11/28:25 pm -
Nonstop2h 20m
Deal found 9/15![Southwest logo]()
$187
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:20 am -
Nonstop2h 45m
Mon 10/2610:00 am -
1 stop6h 35m
Deal found 9/15![Southwest logo]()
$187
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Wed 11/118:45 am -
Nonstop3h 06m
Thu 11/198:00 am -
Nonstop2h 33m
Deal found 9/19![United Airlines logo]()
$208
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Tue 11/104:58 pm -
Nonstop3h 10m
Thu 11/198:00 am -
Nonstop2h 33m
Deal found 9/19![United Airlines logo]()
$208
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:45 am -
2 stops8h 35m
Mon 11/165:40 am -
1 stop7h 10m
Deal found 9/15![Southwest logo]()
$191
This Southwest deal was found by Cheapflights users on 9/18. 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.
Thu 10/295:20 am -
Nonstop2h 45m
Sun 11/110:00 am -
1 stop4h 55m
Deal found 9/18![Southwest logo]()
$233
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/91:05 pm -
Nonstop3h 06m
Sat 1/96:25 pm -
Nonstop2h 25m
Deal found 9/16![United Airlines logo]()
$271
This United Airlines deal was found by Cheapflights users on 9/18. 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 11/26:24 am -
Nonstop3h 06m
Fri 11/66:24 pm -
Nonstop2h 35m
Deal found 9/18![United Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 9/17. 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.
Thu 12/175:05 am -
Nonstop2h 45m
Thu 12/312:45 pm -
1 stop6h 10m
Deal found 9/17![Southwest logo]()
$275
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Fri 10/95:00 pm -
Nonstop3h 02m
Wed 10/1412:10 pm -
Nonstop2h 44m
Deal found 9/17![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/146:20 am -
1 stop7h 20m
Tue 3/96:20 am -
1 stop9h 30m
Deal found 9/15![Southwest logo]()
$278
Last-minute flights from Key Largo to HoustonDiscover last-minute flight deals from Key Largo to Houston. Data last updated September 20, 2026 and is based on user searches.
Discover last-minute flight deals from Key Largo to Houston. Data last updated September 20, 2026 and is based on user searches.
This deal was found by Cheapflights users on 9/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:25 am -
Nonstop3h 08m
Fri 10/22:18 pm -
Nonstop2h 41m
Deal found 9/19![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 9/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:55 am -
Nonstop3h 08m
Tue 10/62:18 pm -
Nonstop2h 41m
Deal found 9/19![Frontier logo]()
$130
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:32 am -
1 stop6h 51m
Tue 10/62:18 pm -
Nonstop2h 41m
Deal found 9/15![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:05 am -
1 stop7h 17m
Wed 10/216:05 am -
1 stop7h 13m
Deal found 9/15![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:36 pm -
1 stop9h 43m
Tue 10/2012:17 pm -
1 stop8h 12m
Deal found 9/15![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:15 am -
1 stop7h 07m
Tue 10/2712:24 pm -
1 stop8h 07m
Deal found 9/15![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:15 am -
1 stop7h 07m
Wed 10/216:05 am -
1 stop7h 13m
Deal found 9/15![Frontier logo]()
$129
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:36 pm -
1 stop13h 46m
Sat 10/249:12 pm -
1 stop12h 03m
Deal found 9/16![Frontier logo]()
$124
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:36 pm -
1 stop9h 43m
Wed 10/2112:07 pm -
1 stop8h 22m
Deal found 9/16![Frontier logo]()
$131
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:30 pm -
1 stop7h 20m
Thu 10/228:25 pm -
Nonstop2h 25m
Deal found 9/17![Southwest logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 9/18. 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.
Fri 10/2311:15 am -
Nonstop3h 00m
Wed 10/2812:19 pm -
1 stop8h 12m
Deal found 9/18![Frontier logo]()
$133
This Priceline deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:55 pm -
1 stop9h 28m
Mon 11/22:32 pm -
Nonstop2h 34m
Deal found 9/15![Frontier logo]()
$123
One-way flights from Key Largo to HoustonSearch for one-way flight options from Key Largo to Houston. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.
Search for one-way flight options from Key Largo to Houston. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:29 pm -
1 stop20h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$81
This Frontier deal was found by Cheapflights users on 9/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:15 am -
Nonstop3h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 9/18. 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 10/910:55 pm -
1 stop9h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$83
This Southwest deal was found by Cheapflights users on 9/17. 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 10/316:25 am -
1 stop5h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Southwest logo]()
$83
This CheapOair deal was found by Cheapflights users on 9/17. 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.
Fri 10/1610:55 pm -
1 stop9h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$84
This American Airlines deal was found by Cheapflights users on 9/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:45 pm -
Nonstop3h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![American Airlines logo]()
$85
This Southwest deal was found by Cheapflights users on 9/17. 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.
Thu 12/175:05 am -
Nonstop2h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Southwest logo]()
$85
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:15 am -
1 stop8h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$86
This Frontier deal was found by Cheapflights users on 9/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:25 am -
1 stop13h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$87
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/134:30 pm -
1 stop7h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Southwest logo]()
$88
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/176:15 am -
1 stop8h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$89
This Southwest deal was found by Cheapflights users on 9/17. 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.
Thu 10/155:20 am -
Nonstop2h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Southwest logo]()
$89
Find flight deals from Key Largo to Houston
Keep the following information in mind while searching for Key Largo to Houston flight deals. Data was last updated September 20, 2026.
Round-trip from | $121 (CheapOair) |
|---|---|
One-way from | $81 (Cheapflightsfares) |
Popular in | June |
Cheapest in | January |
Average price | $192 |
Cheapflights Fare Finder
Customize your flight search to find flights from Key Largo to Houston 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 7,457,451 searches. Data last updated September 20, 2026.
Use the filters below to find and compare flights from Key Largo to Houston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
MiamiHouston
MIA Miami - IAH Houston George Bush Intcntl
MIAIAH
Miami
Tue 11/17
12:50 pm-2:56 pm
Nonstop3h 06m
Houston George Bush Intcntl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$85
MiamiHouston
MIA Miami - IAH Houston George Bush Intcntl
MIAIAH
Miami
Wed 11/4
4:58 pm-7:08 pm
Nonstop3h 10m
Houston George Bush Intcntl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$85
MiamiHouston
MIA Miami - HOU Houston Hobby
MIAHOU
Miami
Wed 12/16
6:15 pm-10:55 pm
1 stop5h 40m
Houston Hobby
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$88
MiamiHouston
MIA Miami - HOU Houston Hobby
MIAHOU
Miami
Tue 10/13
4:30 pm-10:50 pm
1 stop7h 20m
Houston Hobby
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$88
Quickest round-trip
MiamiHouston
MIA Miami - HOU Houston Hobby
MIAHOU
Miami
Thu 10/15
5:20 am-7:05 am
Nonstop2h 45m
Houston Hobby
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$89
MiamiHouston
MIA Miami - HOU Houston Hobby
MIAHOU
Miami
Wed 10/21
7:00 am-10:20 am
1 stop4h 20m
Houston Hobby
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$95
MiamiHouston
MIA Miami - IAH Houston George Bush Intcntl
MIAIAH
Miami
Sat 12/12
10:06 am-12:12 pm
Nonstop3h 06m
Houston George Bush Intcntl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
MiamiHouston
MIA Miami - IAH Houston George Bush Intcntl
MIAIAH
Miami
Tue 12/15
12:52 pm-8:18 pm
1 stop8h 26m
Houston George Bush Intcntl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$106
MiamiHouston
MIA Miami - IAH Houston George Bush Intcntl
MIAIAH
Miami
Sat 11/14
7:00 am-11:27 am
1 stop5h 27m
Houston George Bush Intcntl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$106
MiamiHouston
MIA Miami - IAH Houston George Bush Intcntl
MIAIAH
Miami
Thu 10/15
1:15 pm-3:11 pm
Nonstop2h 56m
Houston George Bush Intcntl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
Showing 1-10 of 41 resultsSorted by cheapest first
Best time to book a flight from Key Largo to Houston
Have a flexible travel schedule? Discover the best time to fly to Houston from Key Largo with our price prediction graph.
MIA-HOU
MIA-IAH
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Key Largo to Houston
KE9-HO1
MIA-HOU
MIA-IAH
What is the cheapest time of day to fly from KE9 to HOU?
Find hourly flight availability from Key Largo to Houston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 20, 2026.
One of the essential ways to save on airfare from Key Largo to Houston is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 32% on airfare.
How much does it cost to fly round-trip from Key Largo to Houston?
Airfare is below average for this route at the moment.
Key Largo to Houston flights typically cost between $138 and $261 in November.The cheapest round-trip price found within the last 5 days was $121 on Frontier (Nov 13-Nov 16).
What is the cheapest day to fly from Key Largo to Houston?
Use this chart to determine the cheapest time to fly round-trip from Key Largo to Houston. Price data was last updated on September 19, 2026.
Travelers seeking maximum savings on their Key Largo to Houston flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Houston
Get insights into the airlines that provide service to Houston. 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 Houston. Reviews last updated September 20, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andJetBlue from Key Largo to Houston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Related info for your journey
Find useful and relevant information for your journey from Key Largo to Houston. 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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Key Largo and Houston flights
Browse other Key Largo and Houston flight options. Last updated on September 20, 2026.
Popular flight searches
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Top 6 airlines flying from Key Largo to Houston
Discover the top 6 airlines that operate flights from Key Largo to Houston. 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 7,457,451 searches. Data last updated September 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$169 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$308 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$116 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$127 | Average$303 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$153 | Average$291 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$157 | Average$315 | FlexibilityNo cancel fee | On-time63% |