HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
George Bush Intcntl

$45+ Cheap flights from Key Largo, FL to George Bush Intcntl (IAH)

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — IAH
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Key Largo to George Bush Intcntl 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 George Bush Intcntl are usually found in January or October, booked 46 days in advance, depart on a Thursday or Friday and return on a Friday

Find flight deals from Key Largo to George Bush Intcntl

Cheapest flights from Key Largo to George Bush Intcntl
Explore the most affordable flight options available from Key Largo to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This CheapOair deal was found by Cheapflights users on 11/4. 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.
Fri 11/148:00 amMIA - IAH
Nonstop3h 07mFrontier
Mon 11/1711:02 amIAH - MIA
Nonstop2h 28mFrontier
Deal found 11/4$77
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Thu 12/45:05 amMIA - IAH
Nonstop2h 59mSpirit Airlines
Mon 12/85:00 amIAH - MIA
Nonstop2h 23mSpirit Airlines
Deal found 11/6$79
This Cheapflightsfares deal was found by Cheapflights users on 11/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/59:59 pmMIA - IAH
Nonstop3h 00mSpirit Airlines
Sun 12/75:25 pmIAH - MIA
Nonstop2h 29mSpirit Airlines
Deal found 11/6$80
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Tue 12/237:10 amMIA - IAH
Nonstop3h 27mMultiple Airlines
Wed 12/314:10 pmIAH - MIA
Nonstop2h 35mMultiple Airlines
Deal found 11/5$81
This Super.com deal was found by Cheapflights users on 11/6. 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.
Fri 11/148:00 amMIA - IAH
Nonstop3h 07mFrontier
Sat 11/1511:02 amIAH - MIA
Nonstop2h 28mFrontier
Deal found 11/6$82
This Frontier deal was found by Cheapflights users on 11/6. 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.
Sat 11/158:00 amMIA - IAH
Nonstop3h 07mFrontier
Sat 11/228:23 pmIAH - MIA
Nonstop2h 31mFrontier
Deal found 11/6$83
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 12/2710:32 amMIA - IAH
Nonstop3h 27mFrontier
Thu 1/16:00 amIAH - MIA
1 stop12h 30mFrontier
Deal found 11/5$85
This Super.com deal was found by Cheapflights users on 11/5. 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 11/221:22 pmMIA - IAH
Nonstop3h 07mFrontier
Sat 11/228:23 pmIAH - MIA
Nonstop2h 31mFrontier
Deal found 11/5$86
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Mon 11/244:35 pmMIA - IAH
Nonstop3h 07mMultiple Airlines
Wed 12/33:54 pmIAH - MIA
Nonstop2h 31mMultiple Airlines
Deal found 11/4$87
This Priceline deal was found by Cheapflights users on 11/4. 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.
Tue 11/1812:17 pmMIA - IAH
Nonstop3h 01mSpirit Airlines
Tue 11/258:10 pmIAH - MIA
Nonstop2h 33mSpirit Airlines
Deal found 11/4$89
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 11/221:22 pmMIA - IAH
Nonstop3h 07mMultiple Airlines
Tue 12/28:10 pmIAH - MIA
Nonstop2h 33mMultiple Airlines
Deal found 11/4$90

Cheap flight deals from Key Largo to George Bush Intcntl

Keep the following information in mind while searching for Key Largo to George Bush Intcntl flight deals. Data was last updated November 6, 2025.

Round-trip from

$77
(CheapOair)

One-way from

$45
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$195
From Key Largo to Houston George Bush Intcntl
Search Deals
One-way flight from Key Largo to Houston George Bush Intcntl
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($4 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 November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to George Bush Intcntl 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 November 6, 2025.
Use the filters below to find and compare flights from Key Largo to Houston George Bush Intcntl Airport that are best for you.

Fly from

Key Largo

Fly to

George Bush Intcntl

Route

Depart

Return

Price

MiamiHouston

MIA - IAH

MIAIAH

Miami

Fri 11/21

5:02 pm-7:05 pm

Nonstop3h 03m

Houston George Bush Intcntl

Sun 11/23

8:10 pm-11:43 pm

Nonstop2h 33m

$93

MiamiHouston

MIA - IAH

MIAIAH

Miami

Mon 12/22

7:00 am-9:00 am

Nonstop3h 00m

Houston George Bush Intcntl

Tue 12/30

4:10 pm-7:45 pm

Nonstop2h 35m

$96

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 1/1

7:00 am-9:00 am

Nonstop3h 00m

Houston George Bush Intcntl

Sun 1/4

10:32 am-2:03 pm

Nonstop2h 31m

$98

MiamiHouston

MIA - IAH

MIAIAH

Miami

Wed 2/18

9:53 pm-11:59 pm

Nonstop3h 06m

Houston George Bush Intcntl

Thu 2/19

5:24 pm-8:51 pm

Nonstop2h 27m

$106

MiamiHouston

MIA - IAH

MIAIAH

Miami

Wed 11/26

2:44 pm-7:00 pm

1 stop29h 16m

Houston George Bush Intcntl

Fri 11/28

7:37 pm-11:08 pm

Nonstop2h 31m

$117

MiamiHouston

MIA - IAH

MIAIAH

Miami

Tue 12/30

7:10 am-9:37 am

Nonstop3h 27m

Houston George Bush Intcntl

Mon 1/5

7:24 pm-8:15 am

1 stop11h 51m

$120

MiamiHouston

MIA - IAH

MIAIAH

Miami

Mon 12/22

7:00 am-9:00 am

Nonstop3h 00m

Houston George Bush Intcntl

Sat 1/3

4:10 pm-7:45 pm

Nonstop2h 35m

$121

MiamiHouston

MIA - IAH

MIAIAH

Miami

Wed 12/24

1:33 pm-3:40 pm

Nonstop3h 07m

Houston George Bush Intcntl

Thu 1/1

9:34 am-1:08 pm

Nonstop2h 34m

$127

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sat 1/17

9:05 am-11:14 am

Nonstop3h 09m

Houston George Bush Intcntl

Sun 1/18

7:20 am-10:56 am

Nonstop2h 36m

$127

MiamiHouston

MIA - IAH

MIAIAH

Miami

Fri 12/12

7:00 am-8:58 am

Nonstop2h 58m

Houston George Bush Intcntl

Tue 12/16

9:36 am-1:13 pm

Nonstop2h 37m

$127

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Key Largo to George Bush Intcntl

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl 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 George Bush Intcntl Airport

How far ahead should I book a flight from Key Largo to Houston George Bush Intcntl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to George Bush Intcntl. Price data was last updated on October 31, 2025.

To ensure you get the cheapest price possible for a flight from Key Largo to Houston George Bush Intcntl Airport, you should look to book at least 46 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Key Largo to Houston George Bush Intcntl Airport?

Currently, March is the cheapest month in which you can book a flight from Key Largo to Houston George Bush Intcntl Airport (average of $39). Flying from Key Largo to Houston George Bush Intcntl Airport in June is currently the most expensive (average of $110). 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 IAH?

Find hourly flight availability from Key Largo to George Bush Intcntl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

One of the essential ways to save on airfare from Key Largo to Houston George Bush Intcntl Airport 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 39% on airfare.

What is the cheapest day to fly from Key Largo to Houston George Bush Intcntl Airport?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to George Bush Intcntl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Key Largo to Houston George Bush Intcntl Airport flight should consider departing on Saturday 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 Key Largo to Houston George Bush Intcntl Airport

Explore weekly flight availability from Key Largo to George Bush Intcntl. 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 November 6, 2025.

The most flights from KE9 to IAH are scheduled on a Wednesday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).

Reviews of airlines servicing George Bush Intcntl

Get insights into the airlines that provide service to George Bush Intcntl. 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 George Bush Intcntl. Reviews last updated November 6, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and Spirit Airlines from Key Largo to Houston George Bush Intcntl Airport 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.
United Airlines
7.4
Good
9,003 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
United Airlines
7.4
Good
9,003 reviews
United Airlines
7.4
Good
9,003 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
American Airlines
7.2
Good
11,041 reviews
United Airlines
7.4
Good
9,003 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
Spirit Airlines
6.3
Okay
8,114 reviews
United Airlines
7.4
Good
9,003 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
Frontier
5.8
Fair
3,116 reviews
United Airlines
7.4
Good
9,003 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours

Related info for your journey

Find useful and relevant information for your journey from Key Largo to George Bush Intcntl. 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 George Bush Intcntl Airport?

    There are many flights that can get you from Key Largo to Houston George Bush Intcntl Airport in 3h 03m. Fly via Spirit Airlines to get the fastest option. Key Largo and Houston George Bush Intcntl Airport are separated by a distance of 962 mi. Generally, flights for this route are nonstop.

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

    The cheapest airlines for a one-way flight from Key Largo to Houston George Bush Intcntl Airport are Spirit Airlines ($49), Frontier ($55), and American Airlines ($64).

  • What are the most reliable airlines from Key Largo to Houston George Bush Intcntl Airport?

    Before booking your flight to Houston George Bush Intcntl Airport from Key Largo, check out the most reliable airlines to get you to your destination on time: Air Chathams (100%), ANA (100%), Envoy Air( 99%).

  • What are the cheapest flights from Key Largo to Houston George Bush Intcntl Airport?

    Looking for the cheapest flight from Key Largo to Houston George Bush Intcntl Airport? While on average our users pay $712, our data indicates the cheapest price to be $47. The most popular route (Miami - Houston George Bush Intcntl), is priced around $63.

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

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

  • How can I find direct flights from Key Largo to George Bush Intcntl?

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

  • Can I find deals for business class flights from Key Largo to George Bush Intcntl?

    Yes. Cheapflights offers flight deals from Key Largo to George Bush Intcntl 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 George Bush Intcntl Airport?

    Currently, March is the cheapest month in which you can book a flight from Key Largo to Houston George Bush Intcntl Airport (average of $39). Flying from Key Largo to Houston George Bush Intcntl Airport in June is currently the most expensive (average of $110). 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

Traveling to a place near Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
Montgomery
Katy
The Woodlands
Spring
Jersey Village
Humble
Conroe
Tomball
Cypress

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 George Bush Intcntl

See prices for flight routes from nearby airports that may be better suited for you.
Orlando to Hobby flights
Fort Lauderdale to Hobby flights
Fort Lauderdale to George Bush Intcntl flights
Orlando to George Bush Intcntl flights
Miami to Hobby flights
Tampa to Hobby flights
Miami to George Bush Intcntl flights
Jacksonville to Hobby flights
Tampa to George Bush Intcntl flights
Jacksonville to George Bush Intcntl flights
West Palm Beach to Hobby flights
West Palm Beach to George Bush Intcntl flights
Pensacola to Hobby flights
Fort Myers to Hobby flights
Pensacola to George Bush Intcntl flights
Fort Myers to George Bush Intcntl flights
Sarasota to Hobby flights
Panama City to Hobby flights
Sarasota to George Bush Intcntl flights
Panama City to George Bush Intcntl flights
Tallahassee to Hobby flights
Key West to Hobby flights
Tallahassee to George Bush Intcntl flights
Gainesville to Hobby flights
Valparaiso to Hobby flights
Valparaiso to George Bush Intcntl flights
Key West to George Bush Intcntl flights
Melbourne to Hobby flights
Melbourne to George Bush Intcntl flights
Gainesville to George Bush Intcntl flights
Daytona Beach to Hobby flights
Daytona Beach to George Bush Intcntl flights
Valdosta to Hobby flights
Valdosta to George Bush Intcntl flights

Top 4 airlines flying from Key Largo to George Bush Intcntl

Discover the top 4 airlines that operate flights from Key Largo to George Bush Intcntl. 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$26Average$116FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$74Average$163FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$107Average$300FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$120Average$296FlexibilityNo cancel feeOn-time69%

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.