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Key Largo

$45+ 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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — MIA
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
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 23 days in advance, depart on a Sunday or Monday and return on a Wednesday

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 October 20, 2025.

Round-trip from

$74
(Mytrip)

One-way from

$45
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$150
From Houston to Key Largo
Search Deals
One-way flight from Houston to Key Largo
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 20, 2025.

This Mytrip deal was found by Cheapflights users on 10/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/15:45 amIAH - MIA
1 stop10h 56mMultiple Airlines
Sat 11/88:00 amMIA - IAH
Nonstop3h 07mMultiple Airlines
Deal found 10/18$74
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Fri 10/3110:55 amIAH - MIA
Nonstop2h 28mFrontier
Sat 11/18:00 amMIA - IAH
Nonstop3h 07mFrontier
Deal found 10/19$76
This Kiwi.com deal was found by Cheapflights users on 10/18. 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 10/3110:55 amIAH - MIA
Nonstop2h 28mFrontier
Mon 11/38:00 amMIA - IAH
Nonstop3h 07mFrontier
Deal found 10/18$77
This Priceline deal was found by Cheapflights users on 10/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/311:02 amIAH - MIA
Nonstop2h 28mMultiple Airlines
Thu 11/65:27 pmMIA - IAH
Nonstop3h 03mMultiple Airlines
Deal found 10/20$78
This Cheapflightsfares deal was found by Cheapflights users on 10/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/88:35 pmIAH - MIA
Nonstop2h 33mSpirit Airlines
Mon 11/105:27 pmMIA - IAH
Nonstop3h 03mSpirit Airlines
Deal found 10/19$79
This Cheapflightsfares deal was found by Cheapflights users on 10/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:00 amIAH - MIA
Nonstop2h 23mSpirit Airlines
Thu 12/116:00 amMIA - IAH
Nonstop2h 59mSpirit Airlines
Deal found 10/20$80
This Priceline deal was found by Cheapflights users on 10/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:35 pmIAH - MIA
Nonstop2h 33mSpirit Airlines
Sat 11/155:27 pmMIA - IAH
Nonstop3h 03mSpirit Airlines
Deal found 10/19$81
This Frontier deal was found by Cheapflights users on 10/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2410:55 amIAH - MIA
Nonstop2h 43mFrontier
Fri 10/318:00 amMIA - IAH
Nonstop3h 00mFrontier
Deal found 10/19$83
This Kiwi.com deal was found by Cheapflights users on 10/18. 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 10/2410:55 amIAH - MIA
Nonstop2h 43mFrontier
Mon 11/38:00 amMIA - IAH
Nonstop3h 07mFrontier
Deal found 10/18$86
This Cheapflightsfares deal was found by Cheapflights users on 10/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/68:35 pmIAH - MIA
Nonstop2h 33mSpirit Airlines
Mon 11/105:27 pmMIA - IAH
Nonstop3h 03mSpirit Airlines
Deal found 10/18$88
This Southwest deal was found by Cheapflights users on 10/17. 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.
Wed 11/122:00 pmHOU - MIA
1 stop4h 50mSouthwest
Fri 11/147:35 pmMIA - HOU
Nonstop3h 05mSouthwest
Deal found 10/17$169
This Southwest deal was found by Cheapflights users on 10/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/82:00 pmHOU - MIA
1 stop4h 50mSouthwest
Thu 12/114:55 pmMIA - HOU
1 stop6h 30mSouthwest
Deal found 10/19$174

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 October 20, 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 11/3

11:02 am-2:30 pm

Nonstop2h 28m

Miami

Thu 11/6

5:27 pm-7:30 pm

Nonstop3h 03m

$78

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Thu 11/27

3:54 pm-7:25 pm

Nonstop2h 31m

Miami

Tue 12/9

11:35 am-1:41 pm

Nonstop3h 06m

$80

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Sat 12/6

5:00 am-8:23 am

Nonstop2h 23m

Miami

Sun 12/7

6:00 am-7:59 am

Nonstop2h 59m

$88

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Tue 11/18

8:35 pm-12:08 am

Nonstop2h 33m

Miami

Tue 11/25

5:02 pm-7:05 pm

Nonstop3h 03m

$89

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Sat 10/25

8:00 pm-11:43 pm

Nonstop2h 43m

Miami

Thu 10/30

6:00 am-11:39 pm

1 stop18h 39m

$113

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Thu 10/30

5:28 pm-6:07 pm

1 stop23h 39m

Miami

Sat 11/1

8:00 am-10:07 am

Nonstop3h 07m

$114

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Wed 11/12

2:59 pm-11:00 am

2 stops19h 01m

Miami

Sat 11/15

5:27 pm-7:30 pm

Nonstop3h 03m

$122

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Wed 10/29

5:42 pm-6:19 am

1 stop11h 37m

Miami

Wed 11/5

12:17 pm-2:18 pm

Nonstop3h 01m

$140

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Thu 11/6

5:56 pm-12:34 am

1 stop5h 38m

Miami

Sat 11/8

6:00 am-11:29 pm

1 stop18h 29m

$144

HoustonMiami

IAH - MIA

IAHMIA

Houston George Bush Intcntl

Thu 11/13

6:25 pm-9:58 pm

Nonstop2h 33m

Miami

Sun 11/16

6:25 am-8:23 am

Nonstop2h 58m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Showing 1-10 of 44 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 October 17, 2025.

Booking 23 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 December is currently the most expensive (average of $111). 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 October 20, 2025.

It’s optimal to fly from Houston to Key Largo in the afternoon. By choosing this option you can save up to 29% 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. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key Largo. Reviews last updated October 20, 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
4,239 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

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
4,239 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

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
8,991 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

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
11,024 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

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
8,095 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

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
3,130 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

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 $80, Spirit Airlines can have you in Key Largo from Houston in 2h 31m. The distance between Houston and Key Largo is about 962 mi. Generally, flights for this route are nonstop.

  • 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 ($48), Frontier ($49), and Southwest ($84).

  • 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 December is currently the most expensive (average of $111). 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

Browse thousands of different options on Cheapflights for your next trip

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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 October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$48Average$156FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$72Average$169FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$117Average$361FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$128Average$385FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$157Average$315FlexibilityNo cancel feeOn-time63%
DeltaCheapest$220Average$360FlexibilityNo cancel feeOn-timeN/A

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