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Key Largo

$49+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — MIA
ago. 31 — sep. 71
dom. 8/31
dom. 9/7
1 adult, Economy
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Cheapflights Tip: The best prices from Houston to Key Largo are usually found in September or October, booked 81 days in advance, depart on a Sunday or Monday and return on a Tuesday

Cheap 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 agosto 26, 2025.

Round-trip from

$76
(FlightHub)

One-way from

$49
(Expedia)

Popular in

December

Cheapest in

September

Average price

$179
From Houston to Key Largo
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One-way flight from Houston to Key Largo
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Highest demand for flights based on searches. 11% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Houston to Key Largo

Cheapest flights from Houston to Key Largo
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 agosto 26, 2025.

This CheapOair deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” 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.
lun. 9/19:12 pmIAH - MIA
Nonstop2h 42mFrontier
lun. 9/88:00 amMIA - IAH
Nonstop2h 54mFrontier
Deal found 8/25$75
This FlightHub deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/188:26 pmIAH - MIA
Nonstop2h 33mSpirit Airlines
sáb. 9/206:59 pmMIA - IAH
Nonstop3h 08mSpirit Airlines
Deal found 8/25$76
This Priceline deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” 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.
lun. 9/82:27 pmIAH - MIA
Nonstop2h 37mSpirit Airlines
jue. 9/113:50 pmMIA - IAH
Nonstop3h 04mSpirit Airlines
Deal found 8/25$77
This FlightHub deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/102:27 pmIAH - MIA
Nonstop2h 37mSpirit Airlines
mié. 9/176:59 pmMIA - IAH
Nonstop3h 08mSpirit Airlines
Deal found 8/25$78
This Frontier deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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.
vie. 9/1210:49 amIAH - MIA
Nonstop2h 42mFrontier
lun. 9/158:00 amMIA - IAH
Nonstop2h 54mFrontier
Deal found 8/26$79
This Kiwi.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” 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.
mié. 9/172:27 pmIAH - MIA
Nonstop2h 37mSpirit Airlines
sáb. 9/206:59 pmMIA - IAH
Nonstop3h 08mSpirit Airlines
Deal found 8/25$81
This Kiwi.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” 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.
dom. 9/148:26 pmIAH - MIA
Nonstop2h 33mSpirit Airlines
mié. 9/246:59 pmMIA - IAH
Nonstop3h 08mSpirit Airlines
Deal found 8/25$82
This Frontier deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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.
vie. 9/510:49 amIAH - MIA
Nonstop2h 42mFrontier
lun. 9/88:00 amMIA - IAH
Nonstop2h 54mFrontier
Deal found 8/26$83
This FlightHub deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/239:06 pmIAH - MIA
Nonstop2h 25mSpirit Airlines
vie. 10/317:23 pmMIA - IAH
Nonstop2h 54mSpirit Airlines
Deal found 8/24$84
This Kiwi.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” 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.
dom. 9/288:26 pmIAH - MIA
Nonstop2h 33mSpirit Airlines
jue. 10/23:50 pmMIA - IAH
Nonstop3h 04mSpirit Airlines
Deal found 8/25$85
This CheapOair deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” 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.
mié. 11/126:18 pmIAH - MIA
Nonstop2h 41mSpirit Airlines
jue. 11/2011:32 amMIA - IAH
Nonstop3h 07mSpirit Airlines
Deal found 8/23$86
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” 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.
jue. 9/188:26 pmIAH - MIA
Nonstop2h 33mSpirit Airlines
mié. 9/246:59 pmMIA - IAH
Nonstop3h 08mSpirit Airlines
Deal found 8/24$87

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 agosto 26, 2025.
Use the filters below to find and compare flights from Houston to Key Largo that are best for you.

Fly from

Houston

Fly to

Key Largo

Route

Depart

Return

Price

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

dom. 9/21

8:26 pm-11:59 pm

Nonstop2h 33m

Miami

mié. 9/24

6:59 pm-9:07 pm

Nonstop3h 08m

$77

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

jue. 9/18

8:26 pm-11:59 pm

Nonstop2h 33m

Miami

sáb. 9/20

6:59 pm-9:07 pm

Nonstop3h 08m

$78

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

vie. 9/12

10:49 am-2:31 pm

Nonstop2h 42m

Miami

lun. 9/15

8:00 am-9:54 am

Nonstop2h 54m

$79

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

vie. 9/12

10:49 am-2:31 pm

Nonstop2h 42m

Miami

vie. 9/19

8:00 am-9:54 am

Nonstop2h 54m

$79

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

sáb. 9/6

10:54 am-2:36 pm

Nonstop2h 42m

Miami

lun. 9/8

8:00 am-9:54 am

Nonstop2h 54m

$79

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

dom. 9/21

8:26 pm-11:59 pm

Nonstop2h 33m

Miami

vie. 9/26

8:00 am-9:54 am

Nonstop2h 54m

$81

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

mar. 9/16

2:27 pm-6:04 pm

Nonstop2h 37m

Miami

lun. 9/22

6:59 pm-9:07 pm

Nonstop3h 08m

$81

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

vie. 9/5

10:49 am-2:31 pm

Nonstop2h 42m

Miami

lun. 9/8

8:00 am-9:54 am

Nonstop2h 54m

$83

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

jue. 10/23

9:06 pm-12:31 am

Nonstop2h 25m

Miami

vie. 10/31

7:23 pm-9:17 pm

Nonstop2h 54m

$84

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

jue. 11/13

7:00 am-10:37 am

Nonstop2h 37m

Miami

lun. 11/17

11:32 am-1:39 pm

Nonstop3h 07m

$84

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/24

Showing 1-10 of 30 results
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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.
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

How far ahead should I book a flight from Houston to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Houston to Key Largo. Price data was last updated on August 22, 2025.

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Houston to Key Largo. 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 Houston to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Houston to Key Largo (average of $232). Flying from Houston to Key Largo in March is currently the most expensive (average of $289). 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 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 agosto 26, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Houston to Key Largo as you normally would.

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 December 16, 2024.

Travelers seeking maximum savings on their Houston to Key Largo flight should consider departing on Wednesday at noon when fares are most often at their lowest. Thursday 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 agosto 26, 2025.
See what other customers who have flown with Southwest, United Airlines, and American 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.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,943 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Spirit Airlines
6.3
Okay
8,031 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Frontier
5.8
Fair
3,200 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

  • How long is the flight from Houston to Key Largo?

    For as low as $107, Spirit Airlines can have you in Key Largo from Houston in 2h 20m. The distance between Houston and Key Largo is about 953 mi. Generally, flights for this route are nonstop.

  • What are the cheapest flights from Houston to Key Largo?

    Looking for the cheapest flight from Houston to Key Largo? While on average our users pay $138, our data indicates the cheapest price to be $63. The most popular route (Houston Hobby - Miami), is priced around $60.

  • Can I find deals for flights from Houston to Key Largo that include hotel bookings?

    Yes. In addition to deals on Houston to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Houston to Key Largo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Houston to Key Largo.

  • Can I find deals for business class flights from Houston to Key Largo?

    Yes. Cheapflights offers flight deals from Houston to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Houston to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Houston to Key Largo (average of $232). Flying from Houston to Key Largo in March is currently the most expensive (average of $289). 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.

See more FAQs

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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Houston to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
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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 agosto 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$164FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$72Average$170FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$125Average$369FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$139Average$394FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$171Average$325FlexibilityNo cancel feeOn-time63%
DeltaCheapest$220Average$366FlexibilityNo cancel feeOn-timeN/A

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