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$40+ 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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — HOU
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Houston are usually found in October or February, booked 81 days in advance, depart on a Wednesday or Thursday and return on a Sunday

Cheap 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 September 16, 2025.

Round-trip from

$75
(Kiwi.com)

One-way from

$40
(Cheapflightsfares)

Popular in

March

Cheapest in

October

Average price

$166
From Key Largo to Houston
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One-way flight from Key Largo to Houston
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Highest demand for flights based on searches. 2% potential increase in price ($3 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 September 2025
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Find flight deals from Key Largo to Houston

Cheapest flights from Key Largo to Houston
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 September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:00 amMIA - IAH
Nonstop3h 00mMultiple Airlines
Mon 10/138:35 amIAH - MIA
Nonstop2h 25mMultiple Airlines
Deal found 9/15$75
This Cheapflightsfares deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:59 pmMIA - IAH
Nonstop3h 08mSpirit Airlines
Mon 10/68:35 amIAH - MIA
Nonstop2h 25mSpirit Airlines
Deal found 9/15$77
This Cheapflightsfares deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:59 pmMIA - IAH
Nonstop3h 08mSpirit Airlines
Tue 10/72:48 pmIAH - MIA
Nonstop2h 23mSpirit Airlines
Deal found 9/16$78
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/97:23 pmMIA - IAH
Nonstop2h 54mSpirit Airlines
Tue 10/142:48 pmIAH - MIA
Nonstop2h 23mSpirit Airlines
Deal found 9/14$79
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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.
Mon 9/298:00 amMIA - IAH
Nonstop2h 54mFrontier
Mon 10/610:49 amIAH - MIA
Nonstop2h 42mFrontier
Deal found 9/14$81
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/101:31 pmMIA - IAH
Nonstop2h 49mSpirit Airlines
Mon 10/138:35 amIAH - MIA
Nonstop2h 25mSpirit Airlines
Deal found 9/15$82
This Priceline deal was found by Cheapflights users on 9/14. 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 10/93:47 pmMIA - IAH
Nonstop2h 51mMultiple Airlines
Mon 10/1310:55 amIAH - MIA
Nonstop2h 43mMultiple Airlines
Deal found 9/14$83
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/108:00 amMIA - IAH
Nonstop3h 00mMultiple Airlines
Sun 10/126:43 pmIAH - MIA
Nonstop2h 26mMultiple Airlines
Deal found 9/14$84
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 10/97:23 pmMIA - IAH
Nonstop2h 54mSpirit Airlines
Mon 10/138:35 amIAH - MIA
Nonstop2h 25mSpirit Airlines
Deal found 9/14$86
This Flightnetwork deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:23 pmMIA - IAH
Nonstop2h 54mSpirit Airlines
Wed 10/222:48 pmIAH - MIA
Nonstop2h 23mSpirit Airlines
Deal found 9/15$87
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/117:42 pmMIA - IAH
1 stop4h 43mSpirit Airlines
Mon 10/138:35 amIAH - MIA
Nonstop2h 25mSpirit Airlines
Deal found 9/15$88
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/233:47 pmMIA - IAH
Nonstop2h 51mMultiple Airlines
Sat 10/258:00 pmIAH - MIA
Nonstop2h 43mMultiple Airlines
Deal found 9/15$90

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 September 16, 2025.
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

Wed 10/15

7:23 pm-9:17 pm

Nonstop2h 54m

Houston George Bush Intcntl

Sat 10/18

8:00 pm-11:43 pm

Nonstop2h 43m

$83

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sat 11/8

8:00 am-10:00 am

Nonstop3h 00m

Houston George Bush Intcntl

Sun 11/9

6:18 pm-9:59 pm

Nonstop2h 41m

$83

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 10/16

7:23 pm-9:17 pm

Nonstop2h 54m

Houston George Bush Intcntl

Sun 10/19

6:43 pm-10:09 pm

Nonstop2h 26m

$86

MiamiHouston

MIA - IAH

MIAIAH

Miami

Tue 12/2

6:30 am-8:32 am

Nonstop3h 02m

Houston George Bush Intcntl

Sat 12/6

6:18 pm-9:59 pm

Nonstop2h 41m

$103

MiamiHouston

MIA - IAH

MIAIAH

Miami

Fri 9/26

3:50 pm-5:54 pm

Nonstop3h 04m

Houston George Bush Intcntl

Sun 9/28

5:25 am-9:01 am

Nonstop2h 36m

$105

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sat 10/4

12:18 pm-9:52 pm

1 stop10h 34m

Houston George Bush Intcntl

Mon 10/13

10:55 am-2:38 pm

Nonstop2h 43m

$107

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sat 11/8

8:00 am-10:00 am

Nonstop3h 00m

Houston George Bush Intcntl

Sun 11/9

5:28 pm-6:07 pm

1 stop23h 39m

$109

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 10/30

3:47 pm-5:38 pm

Nonstop2h 51m

Houston George Bush Intcntl

Mon 11/3

7:21 am-5:05 pm

1 stop8h 44m

$111

MiamiHouston

MIA - IAH

MIAIAH

Miami

Fri 11/14

11:07 am-9:53 pm

1 stop11h 46m

Houston George Bush Intcntl

Mon 11/17

6:18 pm-9:59 pm

Nonstop2h 41m

$112

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sat 11/8

9:00 am-10:57 am

Nonstop2h 57m

Houston George Bush Intcntl

Sun 11/16

6:25 pm-9:58 pm

Nonstop2h 33m

$127

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 37 results
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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.
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

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 September 12, 2025.

Booking 81 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, September is the cheapest month in which you can book a flight from Key Largo to Houston (average of $230). Flying from Key Largo to Houston in March is currently the most expensive (average of $330). 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 September 16, 2025.

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

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 December 16, 2024.

Travelers seeking maximum savings on their Key Largo to Houston flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday evenings 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 September 16, 2025.
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.
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,924 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,019 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,174 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

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

    Spirit Airlines and Southwest can get you from Key Largo to Houston in just under 2h 50m. Your travel time will be generally consistent. There are 953 mi between Key Largo and Houston. Generally, flights for this route are nonstop.

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

    One-way options have recently been found by users for as low as $40 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $43 and Southwest from $64 one-way.

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

    While on average a flight from Key Largo to Houston is generally $249, our data shows the cheapest flight currently is $103. When looking at the most popular route, (Miami - Houston Hobby), you can expect to pay $65 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Key Largo to Houston 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 Key Largo to Houston?

    Currently, September is the cheapest month in which you can book a flight from Key Largo to Houston (average of $230). Flying from Key Largo to Houston in March is currently the most expensive (average of $330). 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 Key Largo to Houston

Discover the top 6 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$26Average$116FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$72Average$164FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$107Average$263FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$107Average$283FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$120Average$310FlexibilityNo cancel feeOn-time69%
DeltaCheapest$214Average$416FlexibilityNo cancel feeOn-timeN/A

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