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Key Largo

$43+ 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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — MIA
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
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Cheapflights Tip: The best prices from Houston to Key Largo are usually found in October or September, booked 20 days in advance, depart on a Sunday or Monday and return on a Wednesday

Cheap 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 December 8, 2025.

This Super.com deal was found by Cheapflights users on 12/7. 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 12/314:10 pmIAH - MIA
Nonstop2h 35mSpirit Airlines
Sat 1/108:51 pmMIA - IAH
Nonstop3h 05mSpirit Airlines
Deal found 12/7$74
This Frontier deal was found by Cheapflights users on 12/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:32 amIAH - MIA
Nonstop2h 31mFrontier
Sat 1/248:43 pmMIA - IAH
Nonstop3h 33mFrontier
Deal found 12/6$78
This Frontier deal was found by Cheapflights users on 12/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:32 amIAH - MIA
Nonstop2h 31mFrontier
Thu 1/291:00 pmMIA - IAH
Nonstop3h 16mFrontier
Deal found 12/6$79
This Mytrip deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:10 pmIAH - MIA
Nonstop2h 35mMultiple Airlines
Sun 1/116:00 amMIA - IAH
Nonstop3h 27mMultiple Airlines
Deal found 12/7$81
This Kiwi.com deal was found by Cheapflights users on 12/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:32 amIAH - MIA
Nonstop2h 31mMultiple Airlines
Tue 1/271:01 pmMIA - IAH
Nonstop3h 07mMultiple Airlines
Deal found 12/6$86
This Priceline deal was found by Cheapflights users on 12/7. 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.
Sat 12/135:25 pmIAH - MIA
Nonstop2h 29mSpirit Airlines
Sat 12/139:59 pmMIA - IAH
Nonstop3h 00mSpirit Airlines
Deal found 12/7$87
This Cheapflightsfares deal was found by Cheapflights users on 12/8. 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 12/178:00 amIAH - MIA
Nonstop2h 31mSpirit Airlines
Sat 1/178:51 pmMIA - IAH
Nonstop3h 05mSpirit Airlines
Deal found 12/8$89
This Super.com deal was found by Cheapflights users on 12/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/135:25 pmIAH - MIA
Nonstop2h 29mSpirit Airlines
Thu 12/257:00 amMIA - IAH
Nonstop3h 00mSpirit Airlines
Deal found 12/6$92
This Priceline deal was found by Cheapflights users on 12/6. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/135:25 pmIAH - MIA
Nonstop2h 29mMultiple Airlines
Sat 12/2010:32 amMIA - IAH
Nonstop3h 27mMultiple Airlines
Deal found 12/6$93
This CheapOair deal was found by Cheapflights users on 12/6. 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.
Sat 12/135:25 pmIAH - MIA
Nonstop2h 29mSpirit Airlines
Sun 12/217:00 amMIA - IAH
Nonstop3h 00mSpirit Airlines
Deal found 12/6$94
This Super.com deal was found by Cheapflights users on 12/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:10 pmIAH - MIA
Nonstop2h 35mSpirit Airlines
Thu 1/17:00 amMIA - IAH
Nonstop3h 00mSpirit Airlines
Deal found 12/6$95
This eDestinos deal was found by Cheapflights users on 12/6. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/135:25 pmIAH - MIA
Nonstop2h 29mSpirit Airlines
Wed 12/172:10 pmMIA - IAH
Nonstop2h 58mSpirit Airlines
Deal found 12/6$96

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 December 8, 2025.

Round-trip from

$73
(Super.com)

One-way from

$43
(Super.com)

Popular in

April

Cheapest in

October

Average price

$213
From Houston to Key Largo
Search Deals
One-way flight from Houston to Key Largo
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 8, 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

Mon 2/9

5:05 am-11:56 am

1 stop5h 51m

Miami

Wed 2/11

1:01 pm-3:08 pm

Nonstop3h 07m

$79

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Sun 2/1

8:47 pm-12:14 am

Nonstop2h 27m

Miami

Thu 2/5

6:02 am-3:15 pm

1 stop10h 13m

$79

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Tue 1/6

4:10 pm-7:45 pm

Nonstop2h 35m

Miami

Tue 1/13

5:54 am-5:18 pm

1 stop12h 24m

$86

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Thu 1/15

4:20 pm-7:46 pm

Nonstop2h 26m

Miami

Mon 1/19

7:00 am-3:19 pm

1 stop9h 19m

$93

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Sat 1/17

4:15 pm-12:42 am

1 stop7h 27m

Miami

Sun 1/18

7:45 am-9:58 am

Nonstop3h 13m

$100

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Mon 2/23

7:05 am-8:13 pm

1 stop12h 08m

Miami

Mon 3/2

9:53 pm-11:59 pm

Nonstop3h 06m

$112

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Mon 1/5

3:09 pm-9:04 pm

1 stop4h 55m

Miami

Mon 1/12

7:00 am-3:19 pm

1 stop9h 19m

$128

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Sun 1/18

6:16 pm-11:56 am

1 stop16h 40m

Miami

Fri 1/23

5:30 am-5:10 pm

1 stop12h 40m

$132

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Sun 1/4

10:32 am-2:03 pm

Nonstop2h 31m

Miami

Fri 1/9

6:00 am-8:27 am

Nonstop3h 27m

$136

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Wed 2/18

2:40 pm-6:16 pm

Nonstop2h 36m

Miami

Sat 2/21

6:15 am-8:22 am

Nonstop3h 07m

$142

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 38 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 December 5, 2025.

Booking 20 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, February is the cheapest month in which you can book a flight from Houston to Key Largo (average of $49). Flying from Houston to Key Largo in July is currently the most expensive (average of $98). 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 December 8, 2025.

It’s optimal to fly from Houston to Key Largo in the afternoon. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight in the evening.

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 Tuesday mornings 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.

Weekly flight availability from Houston to Key Largo

Explore weekly flight availability from Houston to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 8, 2025.

The most flights from HO1 to KE9 are scheduled on a Friday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

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 December 8, 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
4,252 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

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
4,252 reviews
Southwest
8.0
Very good
4,252 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

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
9,076 reviews
Southwest
8.0
Very good
4,252 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

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
11,042 reviews
Southwest
8.0
Very good
4,252 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

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
8,169 reviews
Southwest
8.0
Very good
4,252 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

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
3,088 reviews
Southwest
8.0
Very good
4,252 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

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 $79, Spirit Airlines can have you in Key Largo from Houston in 5h 51m. The distance between Houston and Key Largo is about 962 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Houston to Key Largo one-way?

    The cheapest airlines for a one-way flight from Houston to Key Largo are Spirit Airlines ($37), Frontier ($39), and American Airlines ($63).

  • 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 $443, our data indicates the cheapest price to be $63. The most popular route (Houston Hobby - Miami), is priced around $58.

  • 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, February is the cheapest month in which you can book a flight from Houston to Key Largo (average of $49). Flying from Houston to Key Largo in July is currently the most expensive (average of $98). 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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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 December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$53Average$155FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$68Average$162FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$117Average$362FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$127Average$367FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$157Average$311FlexibilityNo cancel feeOn-time63%
DeltaCheapest$172Average$401FlexibilityNo cancel feeOn-timeN/A

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