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$41+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — HOU
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Houston are usually found in October or September, booked 83 days in advance, depart on a Wednesday or Monday and return on a Sunday

Cheap 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 December 21, 2025.

This CheapOair deal was found by Cheapflights users on 12/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:00 amMIA - IAH
Nonstop3h 00mSpirit Airlines
Sat 1/104:20 pmIAH - MIA
Nonstop2h 26mSpirit Airlines
Deal found 12/19$121
This CheapOair deal was found by Cheapflights users on 12/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amMIA - IAH
Nonstop3h 00mSpirit Airlines
Wed 1/74:10 pmIAH - MIA
Nonstop2h 35mSpirit Airlines
Deal found 12/18$124
This Cheapflightsfares deal was found by Cheapflights users on 12/19. 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 12/277:00 amMIA - IAH
Nonstop3h 00mSpirit Airlines
Wed 1/74:10 pmIAH - MIA
Nonstop2h 35mSpirit Airlines
Deal found 12/19$142
This Cheapflightsfares deal was found by Cheapflights users on 12/19. 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.
Tue 12/307:00 amMIA - IAH
Nonstop3h 00mSpirit Airlines
Tue 1/64:10 pmIAH - MIA
Nonstop2h 35mSpirit Airlines
Deal found 12/19$162
This Priceline deal was found by Cheapflights users on 12/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amMIA - IAH
Nonstop3h 00mMultiple Airlines
Sat 1/31:54 pmIAH - MIA
Nonstop2h 31mMultiple Airlines
Deal found 12/17$163
This Kiwi.com deal was found by Cheapflights users on 12/19. 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.
Sun 12/217:10 amMIA - IAH
Nonstop3h 27mFrontier
Thu 1/82:36 pmIAH - MIA
Nonstop2h 31mFrontier
Deal found 12/19$171
This Priceline deal was found by Cheapflights users on 12/19. 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.
Sat 12/277:00 amMIA - IAH
Nonstop3h 00mMultiple Airlines
Wed 1/76:05 amIAH - MIA
1 stop7h 29mMultiple Airlines
Deal found 12/19$175
This Expedia deal was found by Cheapflights users on 12/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:32 amMIA - IAH
Nonstop3h 27mFrontier
Sat 1/36:19 pmIAH - MIA
1 stop26h 36mFrontier
Deal found 12/20$176
This Cheapflightsfares deal was found by Cheapflights users on 12/18. 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.
Wed 12/317:00 amMIA - IAH
Nonstop3h 00mSpirit Airlines
Tue 1/63:09 pmIAH - MIA
1 stop4h 55mSpirit Airlines
Deal found 12/18$180
This Super.com deal was found by Cheapflights users on 12/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:00 amMIA - IAH
Nonstop3h 00mSpirit Airlines
Thu 1/84:20 pmIAH - MIA
Nonstop2h 26mSpirit Airlines
Deal found 12/18$193
This Delta deal was found by Cheapflights users on 12/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:01 pmMIA - HOU
1 stop6h 23mDelta
Fri 1/26:00 amHOU - MIA
1 stop5h 56mDelta
Deal found 12/19$363
This Delta deal was found by Cheapflights users on 12/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:45 pmMIA - HOU
1 stop7h 29mDelta
Wed 12/313:25 pmHOU - MIA
1 stop5h 43mDelta
Deal found 12/19$501

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 December 21, 2025.

Round-trip from

$74
(Cheapflightsfares)

One-way from

$41
(Frontier)

Popular in

March

Cheapest in

October

Average price

$207
From Key Largo to Houston
Search Deals
One-way flight from Key Largo to Houston
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 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 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 December 21, 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 1/7

7:00 am-9:00 am

Nonstop3h 00m

Houston George Bush Intcntl

Tue 1/27

8:30 am-11:56 am

Nonstop2h 26m

$74

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sun 1/18

8:51 pm-10:56 pm

Nonstop3h 05m

Houston George Bush Intcntl

Wed 1/21

8:30 am-11:56 am

Nonstop2h 26m

$74

MiamiHouston

MIA - IAH

MIAIAH

Miami

Fri 2/6

7:00 am-3:19 pm

1 stop9h 19m

Houston George Bush Intcntl

Mon 2/9

4:20 pm-7:46 pm

Nonstop2h 26m

$82

MiamiHouston

MIA - IAH

MIAIAH

Miami

Wed 1/14

7:00 am-3:19 pm

1 stop9h 19m

Houston George Bush Intcntl

Sat 1/17

11:38 am-11:14 pm

1 stop10h 36m

$88

MiamiHouston

MIA - IAH

MIAIAH

Miami

Fri 2/13

9:53 pm-11:59 pm

Nonstop3h 06m

Houston George Bush Intcntl

Tue 2/17

6:00 am-12:16 pm

1 stop5h 16m

$93

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 1/8

7:00 am-3:19 pm

1 stop9h 19m

Houston George Bush Intcntl

Fri 1/9

4:20 pm-7:46 pm

Nonstop2h 26m

$93

MiamiHouston

MIA - IAH

MIAIAH

Miami

Wed 2/25

9:53 pm-11:59 pm

Nonstop3h 06m

Houston George Bush Intcntl

Wed 3/18

5:23 pm-8:43 pm

Nonstop2h 20m

$99

MiamiHouston

MIA - IAH

MIAIAH

Miami

Fri 2/27

9:53 pm-11:59 pm

Nonstop3h 06m

Houston George Bush Intcntl

Sun 3/1

5:24 pm-8:51 pm

Nonstop2h 27m

$99

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sat 1/10

7:00 am-3:19 pm

1 stop9h 19m

Houston George Bush Intcntl

Sat 1/24

5:05 am-11:56 am

1 stop5h 51m

$123

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 1/22

1:00 pm-3:16 pm

Nonstop3h 16m

Houston George Bush Intcntl

Mon 1/26

6:16 pm-9:54 pm

Nonstop2h 38m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

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 December 12, 2025.

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 December 21, 2025.

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 35% 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 December 16, 2024.

Travelers seeking maximum savings on their Key Largo to Houston flight should consider departing on Wednesday 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.

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 December 21, 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
4,257 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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
4,257 reviews
Southwest
8.0
Very good
4,257 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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
9,099 reviews
Southwest
8.0
Very good
4,257 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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
11,050 reviews
Southwest
8.0
Very good
4,257 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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
8,194 reviews
Southwest
8.0
Very good
4,257 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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
3,082 reviews
Southwest
8.0
Very good
4,257 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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, Southwest, and Delta can get you from Key Largo to Houston in just under 3h. Your travel time can differ by up to 10h 25m. There are 962 mi between Key Largo and Houston. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $38 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $40 and American Airlines from $58 one-way.

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

    While on average a flight from Key Largo to Houston is generally $319, our data shows the cheapest flight currently is $83. When looking at the most popular route, (Miami - Houston Hobby), you can expect to pay $51 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, 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.

See more FAQs

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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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$26Average$116FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$71Average$150FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$107Average$247FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$107Average$272FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$110Average$278FlexibilityNo cancel feeOn-time69%

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