$35+ Cheap flights from Key Largo, FL to Houston
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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — HOU
Mar 9 — Mar 161
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 October or September, booked 82 days in advance, depart on a Wednesday or Thursday and return on a Sunday
Cheap flight deals from Key Largo to Houston
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Best
Last-minute
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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 February 7, 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 February 7, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Wed 3/118:00 am
IAH
- MIA
1 stop8h 27m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$74
This CheapOair deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/209:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Tue 2/245:24 pm
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$75
This Priceline deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:34 am
MIA
- IAH
Nonstop3h 05m
Multiple Airlines
Mon 4/205:23 pm
IAH
- MIA
Nonstop2h 27m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/89:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Sun 4/2611:37 am
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/149:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Sat 4/2511:37 am
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$79
This CheapOair deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/189:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Tue 3/315:24 pm
IAH
- MIA
Nonstop2h 20m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/127:00 am
MIA
- IAH
Nonstop3h 13m
Multiple Airlines
Tue 2/175:24 pm
IAH
- MIA
Nonstop2h 27m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$81
This Cheapflightsfares deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/289:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Sat 3/76:50 pm
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$82
This CheapOair deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/189:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Sat 2/285:24 pm
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:30 am
MIA
- IAH
Nonstop3h 20m
Multiple Airlines
Fri 4/245:23 pm
IAH
- MIA
Nonstop2h 27m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/109:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Sun 4/2611:37 am
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$86
This Southwest deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:30 am
MIA
- HOU
Nonstop2h 55m
Southwest
Wed 3/112:45 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Deal found 2/4![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 February 7, 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 February 7, 2026.
This Priceline deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/111:34 am
MIA
- IAH
Nonstop3h 05m
Frontier
Thu 5/72:39 pm
IAH
- MIA
Nonstop2h 29m
Frontier
Deal found 2/5![Frontier logo]()
$85
This Cheapflightsfares deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Tue 3/247:05 am
IAH
- MIA
1 stop11h 11m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$89
This CheapOair deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:00 am
MIA
- IAH
Nonstop3h 13m
Multiple Airlines
Tue 3/247:05 am
IAH
- MIA
1 stop11h 11m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$90
This Super.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:00 am
MIA
- IAH
Nonstop3h 13m
Frontier
Thu 3/122:39 pm
IAH
- MIA
Nonstop2h 29m
Frontier
Deal found 2/5![Frontier logo]()
$85
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/77:10 pm
MIA
- HOU
Nonstop3h 00m
Southwest
Mon 3/92:45 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Deal found 2/2![Southwest logo]()
$177
This CheapOair deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/199:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Sun 3/225:24 pm
IAH
- MIA
Nonstop2h 20m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$90
This Super.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/143:09 pm
MIA
- IAH
Nonstop3h 21m
Frontier
Thu 2/1910:08 am
IAH
- MIA
Nonstop2h 32m
Frontier
Deal found 2/4![Frontier logo]()
$88
This CheapOair deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Sun 3/15:24 pm
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$90
This Delta deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:00 am
MIA
- HOU
1 stop5h 23m
Delta
Tue 4/1410:46 am
HOU
- MIA
1 stop6h 49m
Delta
Deal found 2/5![Delta logo]()
$204
This CheapOair deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/249:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Thu 2/265:24 pm
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$90
This Spirit deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/89:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Sun 4/195:23 pm
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$91
This Spirit deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/119:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Sat 4/255:05 am
IAH
- MIA
1 stop6h 33m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$92
This Cheapflightsfares deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/189:14 am
MIA
- IAH
1 stop13h 56m
Spirit Airlines
Tue 3/247:05 am
IAH
- MIA
1 stop11h 11m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$111
This Southwest deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:10 am
MIA
- HOU
Nonstop2h 55m
Southwest
Tue 3/102:45 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Deal found 2/5![Southwest logo]()
$197
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:00 am
MIA
- HOU
1 stop5h 23m
Delta
Tue 4/75:27 pm
HOU
- MIA
1 stop6h 25m
Delta
Deal found 2/4![Delta logo]()
$209
This Southwest deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:15 am
MIA
- HOU
2 stops13h 25m
Southwest
Wed 3/112:45 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Deal found 2/4![Southwest logo]()
$198
This CheapOair deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:05 am
MIA
- IAH
1 stop17h 04m
Spirit Airlines
Wed 3/118:00 am
IAH
- MIA
1 stop8h 27m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$126
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:00 am
MIA
- HOU
1 stop5h 01m
Delta
Wed 3/182:13 pm
HOU
- MIA
1 stop7h 13m
Delta
Deal found 2/3![Delta logo]()
$213
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/185:30 am
MIA
- HOU
Nonstop2h 55m
Southwest
Mon 3/232:45 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Deal found 2/2![Southwest logo]()
$213
This Southwest deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:10 am
MIA
- HOU
Nonstop2h 55m
Southwest
Mon 3/92:45 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Deal found 2/4![Southwest logo]()
$217
This Southwest deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1812:40 pm
MIA
- HOU
1 stop8h 45m
Southwest
Tue 3/245:50 am
HOU
- MIA
1 stop7h 35m
Southwest
Deal found 2/4![Southwest logo]()
$217
This Southwest deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/106:55 am
MIA
- HOU
2 stops7h 45m
Southwest
Wed 3/115:50 am
HOU
- MIA
1 stop7h 35m
Southwest
Deal found 2/4![Southwest logo]()
$222
This Southwest deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/712:10 pm
MIA
- HOU
1 stop6h 40m
Southwest
Wed 4/83:05 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Deal found 2/4![Southwest logo]()
$223
Last-minute flights from Key Largo to HoustonDiscover last-minute flight deals from Key Largo to Houston. Data last updated February 7, 2026 and is based on user searches.
Discover last-minute flight deals from Key Largo to Houston. Data last updated February 7, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/127:00 am
MIA
- IAH
Nonstop3h 13m
Multiple Airlines
Tue 2/175:24 pm
IAH
- MIA
Nonstop2h 27m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$81
This Trip.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/189:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Sat 2/215:24 pm
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$77
This CheapOair deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/189:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Sat 2/285:24 pm
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$84
This CheapOair deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Tue 2/246:00 am
IAH
- MIA
1 stop5h 16m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$87
This CheapOair deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/209:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Tue 2/245:24 pm
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$75
This Priceline deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/279:53 pm
MIA
- IAH
Nonstop3h 06m
Multiple Airlines
Sun 3/19:35 am
IAH
- MIA
Nonstop2h 28m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$86
This CheapOair deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/289:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Sun 3/15:24 pm
IAH
- MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$82
This Cheapflightsfares deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Wed 3/118:00 am
IAH
- MIA
1 stop8h 27m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$74
This Super.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:00 am
MIA
- IAH
Nonstop3h 13m
Frontier
Thu 3/122:39 pm
IAH
- MIA
Nonstop2h 29m
Frontier
Deal found 2/3![Frontier logo]()
$85
This Southwest deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:30 am
MIA
- HOU
Nonstop2h 55m
Southwest
Tue 3/102:45 pm
HOU
- MIA
Nonstop2h 15m
Southwest
Deal found 2/4![Southwest logo]()
$157
This Super.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/189:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Tue 3/247:05 am
IAH
- MIA
1 stop11h 11m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$79
This CheapOair deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/189:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Sat 3/215:24 pm
IAH
- MIA
Nonstop2h 20m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$80
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 February 7, 2026.
Search for one-way flight options from Key Largo to Houston. Find affordable one-way fares based on user searches. Data last updated February 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/59:45 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$35
This CheapOair deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:00 am
MIA
- IAH
Nonstop3h 13m
Frontier
Deal found 2/3![Frontier logo]()
$36
This CheapOair deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$37
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/109:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$39
This Expedia deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/89:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$40
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/249:45 pm
MIA
- IAH
Nonstop3h 04m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$41
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/309:45 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$42
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/213:09 pm
MIA
- IAH
Nonstop3h 21m
Frontier
Deal found 2/3![Frontier logo]()
$43
This Super.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/127:00 am
MIA
- IAH
Nonstop3h 13m
Frontier
Deal found 2/3![Frontier logo]()
$44
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/29:45 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Deal found 2/4![Spirit Airlines logo]()
$45
This CheapOair deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/149:53 pm
MIA
- IAH
Nonstop3h 06m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$47
This Trip.com deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:00 am
MIA
- IAH
Nonstop3h 13m
Frontier
Deal found 2/6![Frontier logo]()
$48
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 February 7, 2026.
Round-trip from | $74 (Cheapflightsfares) |
|---|---|
One-way from | $35 (Kiwi.com) |
Popular in | March |
Cheapest in | October |
Average price | $168 |
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 2,558,603 searches. Data last updated February 7, 2026.
Use the filters below to find and compare flights from Key Largo to Houston that are best for you.
Fly from
Key Largo
Fly to
Houston
Route
Depart
Return
Price
MiamiHouston
MIA - IAH
MIAIAH
Miami
Fri 5/1
11:34 am-1:39 pm
Nonstop3h 05m
Houston George Bush Intcntl
Thu 5/7
2:39 pm-6:08 pm
Nonstop2h 29m
$85
MiamiHouston
MIA - IAH
MIAIAH
Miami
Thu 3/5
7:00 am-9:13 am
Nonstop3h 13m
Houston George Bush Intcntl
Thu 3/12
2:39 pm-6:08 pm
Nonstop2h 29m
$85
MiamiHouston
MIA - IAH
MIAIAH
Miami
Sat 2/14
3:09 pm-5:30 pm
Nonstop3h 21m
Houston George Bush Intcntl
Thu 2/19
10:08 am-1:40 pm
Nonstop2h 32m
$88
MiamiHouston
MIA - IAH
MIAIAH
Miami
Thu 2/26
9:53 pm-11:59 pm
Nonstop3h 06m
Houston George Bush Intcntl
Tue 3/24
7:05 am-7:16 pm
1 stop11h 11m
$89
MiamiHouston
MIA - IAH
MIAIAH
Miami
Thu 2/26
7:00 am-9:13 am
Nonstop3h 13m
Houston George Bush Intcntl
Tue 3/24
7:05 am-7:16 pm
1 stop11h 11m
$90
MiamiHouston
MIA - IAH
MIAIAH
Miami
Thu 3/19
9:45 pm-11:49 pm
Nonstop3h 04m
Houston George Bush Intcntl
Sun 3/22
5:24 pm-8:44 pm
Nonstop2h 20m
$90
MiamiHouston
MIA - IAH
MIAIAH
Miami
Thu 2/26
9:53 pm-11:59 pm
Nonstop3h 06m
Houston George Bush Intcntl
Sun 3/1
5:24 pm-8:51 pm
Nonstop2h 27m
$90
MiamiHouston
MIA - IAH
MIAIAH
Miami
Tue 2/24
9:53 pm-11:59 pm
Nonstop3h 06m
Houston George Bush Intcntl
Thu 2/26
5:24 pm-8:51 pm
Nonstop2h 27m
$90
MiamiHouston
MIA - IAH
MIAIAH
Miami
Wed 4/8
9:45 pm-11:49 pm
Nonstop3h 04m
Houston George Bush Intcntl
Sun 4/19
5:23 pm-8:50 pm
Nonstop2h 27m
$91
MiamiHouston
MIA - IAH
MIAIAH
Miami
Sat 4/11
9:45 pm-11:49 pm
Nonstop3h 04m
Houston George Bush Intcntl
Sat 4/25
5:05 am-12:38 pm
1 stop6h 33m
$92
Showing 1-10 of 44 results
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-IAH
MIA-HOU
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-IAH
MIA-HOU
How far ahead should I book a flight from Key Largo to Houston?
Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Houston. Price data was last updated on January 30, 2026.
Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Key Largo to Houston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Key Largo to Houston?
Currently, March is the cheapest month in which you can book a flight from Key Largo to Houston (average of $39). Flying from Key Largo to Houston in July is currently the most expensive (average of $92). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
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 February 7, 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 46% on airfare.
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 February 23, 2025.
Travelers seeking maximum savings on their Key Largo to Houston flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday mornings 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 February 7, 2026.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines 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
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
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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Alternative routes for Key Largo to Houston
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Complete your trip
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Key Largo and Houston flights
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Top 5 airlines flying from Key Largo to Houston
Discover the top 5 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 2,558,603 searches. Data last updated February 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$26 | Average$135 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$58 | Average$147 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$107 | Average$244 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$107 | Average$267 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$107 | Average$273 | FlexibilityNo cancel fee | On-time69% |