HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Houston

$52+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — HOU
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Key Largo to Houston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Key Largo to Houston are usually found in October or August, booked 48 days in advance, depart on a Tuesday or Wednesday 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 July 31, 2025.

Round-trip from

$96
(Cheapflightsfares)

One-way from

$52
(FlightHub)

Popular in

July

Cheapest in

October

Average price

$225
From Key Largo to Houston
Search Deals
One-way flight from Key Largo to Houston
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 31, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/31. 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 8/216:32 pmMIA - IAH
Nonstop2h 46mSpirit Airlines
Sun 8/246:40 amIAH - MIA
Nonstop2h 34mSpirit Airlines
Deal found 7/31$96
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2910:41 pmMIA - IAH
Nonstop2h 42mAmerican Airlines
Fri 9/56:14 pmIAH - MIA
Nonstop2h 46mAmerican Airlines
Deal found 7/30$107
This Southwest deal was found by Cheapflights users on 7/31. 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.
Thu 9/46:15 pmMIA - HOU
Nonstop2h 45mSouthwest
Sun 9/73:10 pmHOU - MIA
Nonstop2h 30mSouthwest
Deal found 7/31$107
This Frontier deal was found by Cheapflights users on 7/29. 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.
Thu 8/74:57 pmMIA - IAH
Nonstop2h 52mFrontier
Sun 8/107:54 pmIAH - MIA
Nonstop2h 42mFrontier
Deal found 7/29$146
This Delta deal was found by Cheapflights users on 7/31. 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.
Thu 9/116:00 amMIA - HOU
1 stop4h 49mDelta
Wed 9/176:00 amHOU - MIA
1 stop6h 28mDelta
Deal found 7/31$197
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/43:47 pmMIA - HOU
1 stop5h 24mAmerican Airlines
Sun 9/72:31 pmHOU - MIA
1 stop5h 07mAmerican Airlines
Deal found 7/30$255

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 July 31, 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

Thu 8/21

6:32 pm-8:18 pm

Nonstop2h 46m

Houston George Bush Intcntl

Sun 8/24

6:40 am-10:14 am

Nonstop2h 34m

$96

MiamiHouston

MIA - IAH

MIAIAH

Miami

Fri 8/29

10:41 pm-12:23 am

Nonstop2h 42m

Houston George Bush Intcntl

Fri 9/5

6:14 pm-10:00 pm

Nonstop2h 46m

$107

MiamiHouston

MIA - HOU

MIAHOU

Miami

Thu 9/4

6:15 pm-8:00 pm

Nonstop2h 45m

Houston Hobby

Sun 9/7

3:10 pm-6:40 pm

Nonstop2h 30m

$107

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 8/7

4:57 pm-6:49 pm

Nonstop2h 52m

Houston George Bush Intcntl

Sun 8/10

7:54 pm-11:36 pm

Nonstop2h 42m

$146

MiamiHouston

MIA - HOU

MIAHOU

Miami

Thu 9/11

6:00 am-9:49 am

1 stop4h 49m

Houston Hobby

Wed 9/17

6:00 am-1:28 pm

1 stop6h 28m

$197

MiamiHouston

MIA - HOU

MIAHOU

Miami

Thu 9/4

3:47 pm-8:11 pm

1 stop5h 24m

Houston Hobby

Sun 9/7

2:31 pm-8:38 pm

1 stop5h 07m

$255

MiamiHouston

MIA - IAH

MIAIAH

Miami

Fri 8/29

7:17 pm-9:05 pm

Nonstop2h 48m

$52

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sat 10/11

10:46 pm-12:35 am

Nonstop2h 49m

$54

MiamiHouston

MIA - HOU

MIAHOU

Miami

Sat 8/30

5:35 pm-7:25 pm

Nonstop2h 50m

$54

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sun 9/28

6:45 am-8:42 am

Nonstop2h 57m

$89

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 15 results
1
2

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 July 25, 2025.

Booking 48 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 $331). 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 July 31, 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.

How much does it cost to fly round-trip from Key Largo to Houston?

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 July 31, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United 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
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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
8,900 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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
8,048 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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 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.

  • 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 $52 on Spirit Airlines. Other airlines that offer cheap prices include United Airlines from $54 and Southwest from $54 one-way.

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

    While on average a flight from Key Largo to Houston is generally $304, our data shows the cheapest flight currently is $99. When looking at the most popular route, (Miami - Houston Hobby), you can expect to pay $62 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 $331). 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

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

Alternative routes for Key Largo to Houston

See prices for flight routes from nearby airports that may be better suited for you.
Orlando to Dallas/Fort Worth flights
Fort Lauderdale to Dallas/Fort Worth flights
Miami to Dallas/Fort Worth flights
West Palm Beach to Dallas/Fort Worth flights
Fort Lauderdale to Love Field flights
Miami to Hobby flights
Orlando to Love Field flights
Fort Lauderdale to Hobby flights
Orlando to Hobby flights
Tampa to Hobby flights
Orlando to Austin flights
Fort Lauderdale to George Bush Intcntl flights
Tampa to Dallas/Fort Worth flights
Miami to George Bush Intcntl flights
Miami to Love Field flights
Tampa to George Bush Intcntl flights
Jacksonville to Hobby flights
Jacksonville to George Bush Intcntl flights
West Palm Beach to Love Field flights
Orlando to George Bush Intcntl flights
Fort Myers to Dallas/Fort Worth flights
Fort Lauderdale to Austin flights
Tampa to Austin flights
Fort Myers to Hobby flights
Jacksonville to Dallas/Fort Worth flights
Miami to Austin flights
Fort Myers to George Bush Intcntl flights
Orlando to San Antonio flights
West Palm Beach to Hobby flights
Tampa to Love Field flights
Fort Lauderdale to San Antonio flights
Pensacola to Dallas/Fort Worth flights
Pensacola to George Bush Intcntl flights
West Palm Beach to George Bush Intcntl flights
Sarasota to Dallas/Fort Worth flights
Miami to San Antonio flights
Tampa to San Antonio flights
Pensacola to Hobby flights
Jacksonville to Austin flights
Jacksonville to Love Field flights
West Palm Beach to Austin flights
Tallahassee to Hobby flights
Pensacola to Love Field flights
Pensacola to Austin flights
Panama City to Dallas/Fort Worth flights
Fort Myers to Austin flights
Panama City to Hobby flights
Fort Myers to Love Field flights
Orlando to McAllen flights
Fort Myers to San Antonio flights

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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$122FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$74Average$161FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$139Average$266FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$139Average$313FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$145Average$308FlexibilityNo cancel feeOn-time71%
DeltaCheapest$214Average$416FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.