$58+ Cheap flights from Houston to Key Largo, FL
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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — MIA
Oct 17 — Oct 241
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 21 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 September 17, 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 September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:21 pm -
1 stop18h 04m
Sat 11/145:05 am -
1 stop8h 04m
Deal found 9/13![Frontier logo]()
$123
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.
Fri 10/169:12 pm -
1 stop18h 39m
Thu 10/2211:15 am -
Nonstop3h 00m
Deal found 9/15![Frontier logo]()
$124
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:05 am -
1 stop9h 59m
Mon 11/211:39 am -
Nonstop3h 08m
Deal found 9/14![Frontier logo]()
$125
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.
Sat 10/241:28 pm -
1 stop7h 01m
Wed 10/285:05 am -
1 stop10h 45m
Deal found 9/15![Frontier logo]()
$126
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:32 pm -
Nonstop2h 34m
Thu 11/1211:39 am -
Nonstop3h 08m
Deal found 9/16![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 11/412:19 pm -
1 stop8h 12m
Sat 11/75:05 am -
1 stop8h 04m
Deal found 9/12![Frontier logo]()
$128
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:00 pm -
Nonstop2h 32m
Mon 10/2610:55 pm -
1 stop9h 28m
Deal found 9/16![Frontier logo]()
$129
This Priceline deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:32 pm -
Nonstop2h 34m
Thu 11/511:39 am -
Nonstop3h 08m
Deal found 9/14![Frontier logo]()
$130
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 10/66:28 am -
1 stop13h 10m
Tue 10/1310:36 pm -
1 stop13h 46m
Deal found 9/15![Frontier logo]()
$131
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:17 pm -
1 stop8h 12m
Wed 1/137:05 am -
1 stop8h 32m
Deal found 9/16![Frontier logo]()
$132
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:05 am -
1 stop7h 13m
Sat 10/245:05 am -
1 stop7h 52m
Deal found 9/14![Frontier logo]()
$133
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.
Fri 10/302:32 pm -
Nonstop2h 34m
Mon 11/210:55 pm -
1 stop9h 28m
Deal found 9/16![Frontier logo]()
$134
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 September 17, 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 September 17, 2026.
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.
Mon 11/22:45 pm -
1 stop6h 30m
Wed 11/46:50 am -
2 stops8h 05m
Deal found 9/15![Southwest logo]()
$191
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.
Sun 2/72:40 pm -
Nonstop2h 25m
Sat 2/136:20 am -
Nonstop3h 10m
Deal found 9/16![United Airlines logo]()
$201
This Delta deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 2/136:05 pm -
1 stop5h 47m
Tue 2/167:30 pm -
1 stop5h 28m
Deal found 9/12![Delta logo]()
$259
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 11/1111:05 am -
2 stops8h 05m
Thu 11/199:10 am -
2 stops11h 30m
Deal found 9/15![Southwest logo]()
$202
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.
Sat 12/122:40 pm -
Nonstop2h 35m
Sat 12/198:45 am -
Nonstop3h 06m
Deal found 9/17![United Airlines logo]()
$210
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.
Sat 10/174:05 pm -
1 stop5h 05m
Fri 10/238:00 pm -
1 stop5h 25m
Deal found 9/16![Southwest logo]()
$214
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:00 am -
Nonstop2h 33m
Mon 11/26:24 am -
Nonstop3h 06m
Deal found 9/14![United Airlines logo]()
$219
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:35 pm -
Nonstop2h 44m
Tue 10/135:00 pm -
Nonstop3h 02m
Deal found 9/13![United Airlines logo]()
$219
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:45 pm -
1 stop7h 15m
Fri 11/65:05 am -
Nonstop2h 45m
Deal found 9/14![Southwest logo]()
$228
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/117:20 am -
Nonstop2h 36m
Fri 3/1911:25 am -
Nonstop3h 10m
Deal found 9/13![United Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 10/235:28 pm -
1 stop6h 25m
Sat 10/316:04 am -
1 stop5h 04m
Deal found 9/12![Delta logo]()
$318
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 10/228:25 pm -
Nonstop2h 25m
Tue 10/278:25 am -
2 stops6h 35m
Deal found 9/12![Southwest logo]()
$255
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/510:50 am -
2 stops9h 05m
Thu 12/109:10 am -
2 stops11h 30m
Deal found 9/13![Southwest logo]()
$255
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:10 pm -
Nonstop2h 44m
Tue 10/135:00 pm -
Nonstop3h 02m
Deal found 9/15![United Airlines logo]()
$271
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 10/1412:10 pm -
Nonstop2h 44m
Fri 10/168:45 am -
Nonstop2h 52m
Deal found 9/16![United Airlines logo]()
$284
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:45 pm -
2 stops6h 25m
Thu 10/226:40 pm -
1 stop5h 35m
Deal found 9/14![Southwest logo]()
$290
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:24 pm -
Nonstop2h 35m
Sat 12/194:40 pm -
Nonstop3h 07m
Deal found 9/13![United Airlines logo]()
$293
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.
Wed 12/92:45 pm -
2 stops6h 25m
Mon 12/216:55 pm -
1 stop6h 00m
Deal found 9/16![Southwest logo]()
$302
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:35 pm -
Nonstop2h 44m
Tue 10/201:15 pm -
Nonstop2h 56m
Deal found 9/15![United Airlines logo]()
$294
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 9/306:25 pm -
Nonstop2h 30m
Fri 10/165:20 am -
Nonstop2h 45m
Deal found 9/12![Southwest logo]()
$308
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:10 pm -
Nonstop2h 44m
Thu 10/151:15 pm -
Nonstop2h 56m
Deal found 9/15![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:00 pm -
2 stops7h 45m
Thu 10/226:40 am -
2 stops8h 15m
Deal found 9/14![Southwest logo]()
$311
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.
Sat 12/52:40 pm -
Nonstop2h 35m
Sun 12/138:45 am -
Nonstop3h 06m
Deal found 9/16![United Airlines logo]()
$297
Last-minute flights from Houston to Key LargoDiscover last-minute flight deals from Houston to Key Largo. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Key Largo. Data last updated September 17, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:58 am -
Nonstop2h 41m
Mon 10/511:25 am -
Nonstop3h 08m
Deal found 9/13![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.
Tue 10/66:28 am -
1 stop13h 10m
Tue 10/1310:36 pm -
1 stop13h 46m
Deal found 9/15![Frontier logo]()
$131
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:05 am -
1 stop7h 13m
Wed 10/1410:36 pm -
1 stop9h 43m
Deal found 9/16![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.
Fri 10/169:12 pm -
1 stop18h 39m
Thu 10/2211:15 am -
Nonstop3h 00m
Deal found 9/15![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” 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 10/176:05 am -
1 stop9h 46m
Mon 10/1910:55 pm -
1 stop9h 24m
Deal found 9/12![Frontier logo]()
$123
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:17 pm -
1 stop8h 12m
Wed 1/137:05 am -
1 stop8h 32m
Deal found 9/16![Frontier logo]()
$132
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:05 am -
1 stop7h 13m
Sat 10/245:05 am -
1 stop7h 52m
Deal found 9/14![Frontier logo]()
$133
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:00 pm -
Nonstop2h 32m
Mon 10/2610:55 pm -
1 stop9h 28m
Deal found 9/16![Frontier logo]()
$129
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.
Sat 10/241:28 pm -
1 stop7h 01m
Wed 10/285:05 am -
1 stop10h 45m
Deal found 9/15![Frontier logo]()
$126
This Priceline deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:32 pm -
Nonstop2h 34m
Thu 11/511:39 am -
Nonstop3h 08m
Deal found 9/14![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.
Fri 10/302:32 pm -
Nonstop2h 34m
Mon 11/210:55 pm -
1 stop13h 39m
Deal found 9/16![Frontier logo]()
$134
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:05 am -
1 stop9h 59m
Mon 11/211:39 am -
Nonstop3h 08m
Deal found 9/14![Frontier logo]()
$125
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 September 17, 2026.
Search for one-way flight options from Houston to Key Largo. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Super.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:12 pm -
1 stop12h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$58
This Flightnetwork deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/179:12 pm -
1 stop12h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$60
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.
Wed 11/116:05 am -
1 stop14h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$61
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 11/1712:19 pm -
1 stop8h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:05 am -
1 stop7h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$63
This Super.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:18 pm -
Nonstop2h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$64
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/292:32 pm -
Nonstop2h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/148:21 pm -
1 stop18h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$67
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:05 am -
1 stop14h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$70
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:14 pm -
1 stop17h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$72
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 10/1311:00 am -
1 stop4h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Southwest logo]()
$88
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:25 pm -
Nonstop2h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Southwest logo]()
$89
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 September 17, 2026.
Round-trip from | $123 (Kiwi.com) |
|---|---|
One-way from | $58 (Super.com) |
Popular in | June |
Cheapest in | October |
Average price | $246 |
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 7,457,451 searches. Data last updated September 17, 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 Houston George Bush Intcntl - MIA Miami
IAHMIA
Houston George Bush Intcntl
Wed 2/10
7:20 am-10:56 am
Nonstop2h 36m
Miami
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$91
HoustonMiami
IAH Houston George Bush Intcntl - MIA Miami
IAHMIA
Houston George Bush Intcntl
Tue 12/15
7:00 am-2:42 pm
1 stop6h 42m
Miami
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$106
HoustonMiami
HOU Houston Hobby - MIA Miami
HOUMIA
Houston Hobby
Tue 10/6
10:55 am-4:55 pm
1 stop5h 00m
Miami
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$106
HoustonMiami
HOU Houston Hobby - MIA Miami
HOUMIA
Houston Hobby
Tue 10/27
3:09 pm-9:21 pm
1 stop5h 12m
Miami
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$109
HoustonMiami
HOU Houston Hobby - MIA Miami
HOUMIA
Houston Hobby
Tue 12/1
11:05 am-8:10 pm
2 stops8h 05m
Miami
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$111
HoustonMiami
IAH Houston George Bush Intcntl - MIA Miami
IAHMIA
Houston George Bush Intcntl
Tue 2/23
6:05 pm-12:52 am
1 stop5h 47m
Miami
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$120
HoustonMiami
IAH Houston George Bush Intcntl - MIA Miami
IAHMIA
Houston George Bush Intcntl
Wed 3/10
1:15 pm-8:54 pm
1 stop6h 39m
Miami
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$120
HoustonMiami
HOU Houston Hobby - MIA Miami
HOUMIA
Houston Hobby
Thu 11/12
7:20 am-4:25 pm
2 stops8h 05m
Miami
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$125
HoustonMiami
IAH Houston George Bush Intcntl - MIA Miami
IAHMIA
Houston George Bush Intcntl
Tue 3/16
1:15 pm-8:54 pm
1 stop6h 39m
Miami
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$130
HoustonMiami
HOU Houston Hobby - MIA Miami
HOUMIA
Houston Hobby
Tue 3/16
1:00 pm-8:54 pm
1 stop6h 54m
Miami
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$130
Showing 1-10 of 45 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 September 17, 2026.
It’s optimal to fly from Houston to Key Largo in the evening. By choosing this option you can save up to 20% 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 $169 and $389 in November.The cheapest round-trip price found within the last 5 days was $123 on Frontier (Nov 11-Nov 14).
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 September 12, 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. Monday mornings 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 September 17, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from Houston to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
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 September 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Houston to Key Largo flights
Consider these flights traveling from Houston to Key Largo.
Top 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 7,457,451 searches. Data last updated September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$182 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$72 | Average$267 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$365 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$340 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$158 | Average$382 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$169 | Average$338 | FlexibilityNo cancel fee | On-time63% |