$81+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — MIA
Jul 21 — Jul 281
Round-trip
1 adult, Economy
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Find cheap flights from Houston to Key Largo with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Houston to Key Largo are usually found in October or September, booked 54 days in advance, depart on a Monday or Saturday and return on a Thursday
Cheap flight deals from Houston to Key Largo
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Best
Last-minute
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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 June 21, 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 June 21, 2026.
This Trip.com deal was found by Cheapflights users on 6/16. 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 7/68:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Fri 7/106:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/16![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/318:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Fri 8/146:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/16![Frontier logo]()
$124
This Super.com deal was found by Cheapflights users on 6/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/138:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Wed 7/156:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/17![Frontier logo]()
$125
This Super.com deal was found by Cheapflights users on 6/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/238:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Tue 7/286:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/17![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Wed 7/2211:19 am
MIA
- IAH
1 stop12h 20m
Frontier
Deal found 6/20![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Tue 7/288:30 am
MIA
- IAH
1 stop15h 09m
Frontier
Deal found 6/20![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Sat 7/1110:48 am
IAH
- MIA
1 stop8h 41m
Frontier
Wed 7/156:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/18![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:00 am
IAH
- MIA
1 stop16h 05m
Frontier
Sat 7/186:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/19![Frontier logo]()
$130
This Super.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Mon 7/206:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/20![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Fri 7/106:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/20![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/226:00 am
IAH
- MIA
1 stop9h 33m
Frontier
Wed 7/296:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/16![Frontier logo]()
$134
This Southwest deal was found by Cheapflights users on 6/16. 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 7/227:25 pm
HOU
- MIA
Nonstop2h 30m
Southwest
Tue 7/285:45 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 6/16![Southwest logo]()
$169
Best flights from Houston to Key LargoDiscover carefully curated flight deals from Houston to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 21, 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 June 21, 2026.
This Super.com deal was found by Cheapflights users on 6/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Mon 7/276:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/15![Frontier logo]()
$192
This Southwest deal was found by Cheapflights users on 6/16. 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 7/217:00 am
HOU
- MIA
2 stops7h 50m
Southwest
Wed 7/294:00 pm
MIA
- HOU
1 stop8h 40m
Southwest
Deal found 6/16![Southwest logo]()
$194
This Delta deal was found by Cheapflights users on 6/16. 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.
Wed 7/295:20 pm
IAH
- MIA
1 stop5h 19m
Delta
Tue 8/187:00 am
MIA
- IAH
1 stop7h 27m
Delta
Deal found 6/16![Delta logo]()
$201
This United Airlines deal was found by Cheapflights users on 6/17. 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 7/174:50 pm
IAH
- MIA
Nonstop2h 43m
United Airlines
Mon 7/206:30 am
MIA
- IAH
Nonstop2h 54m
United Airlines
Deal found 6/17![United Airlines logo]()
$230
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:15 pm
HOU
- MIA
2 stops8h 20m
Southwest
Wed 10/217:05 am
MIA
- HOU
2 stops10h 50m
Southwest
Deal found 6/18![Southwest logo]()
$199
This Delta deal was found by Cheapflights users on 6/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/292:37 pm
IAH
- MIA
1 stop5h 26m
Delta
Wed 9/212:05 pm
MIA
- IAH
1 stop6h 35m
Delta
Deal found 6/18![Delta logo]()
$210
This Delta deal was found by Cheapflights users on 6/16. 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.
Wed 7/85:20 pm
IAH
- MIA
1 stop6h 35m
Delta
Tue 8/47:00 am
MIA
- IAH
1 stop5h 15m
Delta
Deal found 6/16![Delta logo]()
$211
This Southwest deal was found by Cheapflights users on 6/17. 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.
Mon 7/67:20 am
HOU
- MIA
1 stop8h 05m
Southwest
Tue 7/145:45 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 6/17![Southwest logo]()
$213
This Delta deal was found by Cheapflights users on 6/16. 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.
Tue 9/15:41 am
IAH
- MIA
1 stop6h 19m
Delta
Wed 9/94:35 pm
MIA
- IAH
1 stop7h 00m
Delta
Deal found 6/16![Delta logo]()
$211
This Southwest deal was found by Cheapflights users on 6/18. 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.
Tue 9/226:00 am
HOU
- MIA
2 stops8h 30m
Southwest
Fri 9/254:00 pm
MIA
- HOU
1 stop9h 15m
Southwest
Deal found 6/18![Southwest logo]()
$213
This Southwest deal was found by Cheapflights users on 6/16. 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.
Sun 8/21:50 pm
HOU
- MIA
1 stop7h 25m
Southwest
Tue 8/49:15 am
MIA
- HOU
2 stops8h 35m
Southwest
Deal found 6/16![Southwest logo]()
$213
This Delta deal was found by Cheapflights users on 6/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/106:34 pm
IAH
- MIA
1 stop5h 21m
Delta
Wed 7/156:00 pm
MIA
- IAH
1 stop6h 57m
Delta
Deal found 6/19![Delta logo]()
$223
This Southwest deal was found by Cheapflights users on 6/16. 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.
Sun 7/269:10 pm
HOU
- MIA
Nonstop2h 30m
Southwest
Thu 7/305:25 am
MIA
- HOU
2 stops7h 20m
Southwest
Deal found 6/16![Southwest logo]()
$222
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:34 pm
IAH
- MIA
1 stop5h 21m
Delta
Wed 7/156:00 pm
MIA
- IAH
1 stop6h 57m
Delta
Deal found 6/20![Delta logo]()
$227
This Delta deal was found by Cheapflights users on 6/16. 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.
Wed 8/268:05 am
IAH
- MIA
1 stop7h 52m
Delta
Sat 9/57:00 am
MIA
- IAH
1 stop7h 27m
Delta
Deal found 6/16![Delta logo]()
$228
This Southwest deal was found by Cheapflights users on 6/18. 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.
Mon 7/278:00 am
HOU
- MIA
1 stop6h 20m
Southwest
Thu 7/305:25 am
MIA
- HOU
2 stops7h 20m
Southwest
Deal found 6/18![Southwest logo]()
$232
This Southwest deal was found by Cheapflights users on 6/16. 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.
Mon 7/69:00 pm
HOU
- MIA
Nonstop2h 30m
Southwest
Fri 7/105:25 am
MIA
- HOU
1 stop5h 10m
Southwest
Deal found 6/16![Southwest logo]()
$232
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:55 am
IAH
- MIA
1 stop6h 02m
Delta
Thu 9/178:25 am
MIA
- IAH
1 stop6h 07m
Delta
Deal found 6/17![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:00 am
HOU
- MIA
2 stops6h 40m
Southwest
Fri 8/217:15 am
MIA
- HOU
2 stops7h 40m
Southwest
Deal found 6/20![Southwest logo]()
$237
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:20 pm
IAH
- MIA
1 stop6h 35m
Delta
Tue 8/47:00 am
MIA
- IAH
1 stop5h 15m
Delta
Deal found 6/17![Delta logo]()
$238
This Southwest deal was found by Cheapflights users on 6/18. 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.
Sun 9/611:55 am
HOU
- MIA
Nonstop2h 30m
Southwest
Sat 9/125:10 pm
MIA
- HOU
Nonstop2h 45m
Southwest
Deal found 6/18![Southwest logo]()
$240
This Delta deal was found by Cheapflights users on 6/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:21 pm
IAH
- MIA
1 stop5h 45m
Delta
Sat 9/197:10 am
MIA
- IAH
1 stop7h 22m
Delta
Deal found 6/19![Delta logo]()
$249
This Southwest deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/314:35 pm
HOU
- MIA
1 stop4h 35m
Southwest
Sun 8/25:00 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 6/20![Southwest logo]()
$263
Last-minute flights from Houston to Key LargoDiscover last-minute flight deals from Houston to Key Largo. Data last updated June 21, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Key Largo. Data last updated June 21, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 6/18. 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.
Sat 6/278:37 pm
IAH
- MIA
Nonstop2h 35m
Frontier
Wed 7/86:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/18![Frontier logo]()
$153
This Frontier deal was found by Cheapflights users on 6/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/278:37 pm
IAH
- MIA
Nonstop2h 35m
Frontier
Thu 7/26:00 am
MIA
- IAH
Nonstop3h 02m
Frontier
Deal found 6/18![Frontier logo]()
$188
This Frontier deal was found by Cheapflights users on 6/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/288:37 pm
IAH
- MIA
Nonstop2h 35m
Frontier
Wed 7/86:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/18![Frontier logo]()
$190
This Super.com deal was found by Cheapflights users on 6/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/288:37 pm
IAH
- MIA
Nonstop2h 35m
Frontier
Sat 7/46:00 am
MIA
- IAH
Nonstop3h 02m
Frontier
Deal found 6/16![Frontier logo]()
$191
This Super.com deal was found by Cheapflights users on 6/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:37 pm
IAH
- MIA
Nonstop2h 35m
Frontier
Sat 7/46:00 am
MIA
- IAH
Nonstop3h 02m
Frontier
Deal found 6/16![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Tue 6/308:02 pm
IAH
- MIA
1 stop16h 47m
Frontier
Wed 7/86:30 am
MIA
- IAH
Nonstop2h 54m
Frontier
Deal found 6/18![Frontier logo]()
$193
This Frontier deal was found by Cheapflights users on 6/16. 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.
Tue 6/3011:12 am
IAH
- MIA
1 stop10h 51m
Frontier
Fri 7/36:00 am
MIA
- IAH
Nonstop3h 02m
Frontier
Deal found 6/16![Frontier logo]()
$199
This Southwest deal was found by Cheapflights users on 6/16. 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.
Sun 7/129:10 pm
HOU
- MIA
Nonstop2h 30m
Southwest
Wed 7/153:05 pm
MIA
- HOU
1 stop8h 10m
Southwest
Deal found 6/16![Southwest logo]()
$198
This Southwest deal was found by Cheapflights users on 6/16. 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 7/147:25 pm
HOU
- MIA
Nonstop2h 30m
Southwest
Tue 7/215:45 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 6/16![Southwest logo]()
$188
This Southwest deal was found by Cheapflights users on 6/16. 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 7/157:25 pm
HOU
- MIA
Nonstop2h 30m
Southwest
Wed 7/226:00 am
MIA
- HOU
2 stops8h 45m
Southwest
Deal found 6/16![Southwest logo]()
$184
This Southwest deal was found by Cheapflights users on 6/16. 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 7/227:25 pm
HOU
- MIA
Nonstop2h 30m
Southwest
Tue 7/285:45 am
MIA
- HOU
Nonstop2h 35m
Southwest
Deal found 6/16![Southwest logo]()
$169
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:17 pm
HOU
- MIA
1 stop5h 22m
Delta
Tue 8/47:00 am
MIA
- HOU
1 stop6h 16m
Delta
Deal found 6/20![Delta logo]()
$197
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 June 21, 2026.
Search for one-way flight options from Houston to Key Largo. Find affordable one-way fares based on user searches. Data last updated June 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/178:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Deal found 6/18![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/188:02 pm
IAH
- MIA
1 stop26h 03m
Frontier
Deal found 6/20![Frontier logo]()
$85
This Southwest deal was found by Cheapflights users on 6/15. 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 7/157:25 pm
HOU
- MIA
Nonstop2h 30m
Southwest
Deal found 6/15![Southwest logo]()
$85
This American Airlines deal was found by Cheapflights users on 6/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:12 pm
IAH
- MIA
Nonstop2h 38m
American Airlines
Deal found 6/16![American Airlines logo]()
$86
This Expedia deal was found by Cheapflights users on 6/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/238:37 pm
IAH
- MIA
Nonstop2h 54m
Frontier
Deal found 6/18![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:16 pm
IAH
- MIA
1 stop28h 31m
Frontier
Deal found 6/20![Frontier logo]()
$88
This Trip.com deal was found by Cheapflights users on 6/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:18 am
IAH
- MIA
1 stop13h 11m
Frontier
Deal found 6/17![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Tue 7/218:02 pm
IAH
- MIA
1 stop26h 03m
Frontier
Deal found 6/18![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Wed 7/2210:53 am
IAH
- MIA
1 stop11h 12m
Frontier
Deal found 6/18![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 6/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:37 pm
IAH
- MIA
Nonstop2h 35m
Frontier
Deal found 6/16![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:00 am
IAH
- MIA
1 stop13h 04m
Frontier
Deal found 6/20![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:44 pm
IAH
- MIA
1 stop11h 14m
Frontier
Deal found 6/20![Frontier logo]()
$94
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 June 21, 2026.
Round-trip from | $123 (Trip.com) |
|---|---|
One-way from | $81 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $301 |
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 June 21, 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
Fri 7/24
8:37 pm-12:31 am
Nonstop2h 54m
Miami
Mon 7/27
6:30 am-8:24 am
Nonstop2h 54m
$192
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Tue 7/21
7:00 am-3:50 pm
2 stops7h 50m
Miami
Wed 7/29
4:00 pm-11:40 pm
1 stop8h 40m
$194
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Wed 10/7
12:15 pm-9:35 pm
2 stops8h 20m
Miami
Wed 10/21
7:05 am-4:55 pm
2 stops10h 50m
$199
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Wed 7/29
5:20 pm-11:39 pm
1 stop5h 19m
Miami
Tue 8/18
7:00 am-1:27 pm
1 stop7h 27m
$201
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Sat 8/29
2:37 pm-9:03 pm
1 stop5h 26m
Miami
Wed 9/2
12:05 pm-5:40 pm
1 stop6h 35m
$210
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Wed 7/8
5:20 pm-12:55 am
1 stop6h 35m
Miami
Tue 8/4
7:00 am-11:15 am
1 stop5h 15m
$211
HoustonMiami
IAH - MIA
IAHMIA
Houston George Bush Intcntl
Tue 9/1
5:41 am-1:00 pm
1 stop6h 19m
Miami
Wed 9/9
4:35 pm-10:35 pm
1 stop7h 00m
$211
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Mon 7/6
7:20 am-4:25 pm
1 stop8h 05m
Miami
Tue 7/14
5:45 am-7:20 am
Nonstop2h 35m
$213
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Tue 9/22
6:00 am-3:30 pm
2 stops8h 30m
Miami
Fri 9/25
4:00 pm-12:15 am
1 stop9h 15m
$213
HoustonMiami
HOU - MIA
HOUMIA
Houston Hobby
Sun 8/2
1:50 pm-10:15 pm
1 stop7h 25m
Miami
Tue 8/4
9:15 am-4:50 pm
2 stops8h 35m
$213
Showing 1-10 of 41 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 June 21, 2026.
It’s optimal to fly from Houston to Key Largo at noon. By choosing this option you can save up to 22% 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?
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 June 13, 2026.
Travelers seeking maximum savings on their Houston to Key Largo flight should consider departing on Monday evenings when fares are most often at their lowest. Friday 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 June 21, 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.
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
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.
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Alternative routes for Houston to Key Largo
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Complete your trip
Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Houston to Key Largo by cabin class
Find flights from Houston to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Houston and Key Largo flights
Browse other Houston and Key Largo flight options. Last updated on June 21, 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 2,558,603 searches. Data last updated June 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$52 | Average$177 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$368 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$111 | Average$346 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$127 | Average$329 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$133 | Average$286 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$141 | Average$318 | FlexibilityNo cancel fee | On-time63% |