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George Bush Intcntl

$35+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — IAH
Mar 9 — Mar 161
Mon 3/9
Mon 3/16
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Houston George Bush Intcntl are usually found in November or October, booked 55 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap 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 February 7, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 2/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:53 pm
MIA
-
IAH
Nonstop3h 06m
Spirit Airlines
Wed 3/118:00 am
IAH
-
MIA
1 stop8h 27m
Spirit Airlines
Deal found 2/5$74
This CheapOair deal was found by Cheapflights users on 2/4. 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 2/209:53 pm
MIA
-
IAH
Nonstop3h 06m
Spirit Airlines
Tue 2/245:24 pm
IAH
-
MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/4$75
This Priceline deal was found by Cheapflights users on 2/4. 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.
Thu 4/1611:34 am
MIA
-
IAH
Nonstop3h 05m
Multiple Airlines
Mon 4/205:23 pm
IAH
-
MIA
Nonstop2h 27m
Multiple Airlines
Deal found 2/4$76
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Wed 4/89:45 pm
MIA
-
IAH
Nonstop3h 04m
Spirit Airlines
Sun 4/2611:37 am
IAH
-
MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/3$77
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 4/149:45 pm
MIA
-
IAH
Nonstop3h 04m
Spirit Airlines
Sat 4/2511:37 am
IAH
-
MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/3$79
This CheapOair deal was found by Cheapflights users on 2/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/189:45 pm
MIA
-
IAH
Nonstop3h 04m
Spirit Airlines
Tue 3/315:24 pm
IAH
-
MIA
Nonstop2h 20m
Spirit Airlines
Deal found 2/5$80
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/127:00 am
MIA
-
IAH
Nonstop3h 13m
Multiple Airlines
Tue 2/175:24 pm
IAH
-
MIA
Nonstop2h 27m
Multiple Airlines
Deal found 2/2$81
This Cheapflightsfares deal was found by Cheapflights users on 2/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/289:53 pm
MIA
-
IAH
Nonstop3h 06m
Spirit Airlines
Sat 3/76:50 pm
IAH
-
MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/4$82
This CheapOair deal was found by Cheapflights users on 2/3. 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.
Wed 2/189:53 pm
MIA
-
IAH
Nonstop3h 06m
Spirit Airlines
Sat 2/285:24 pm
IAH
-
MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/3$84
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 4/911:30 am
MIA
-
IAH
Nonstop3h 20m
Multiple Airlines
Fri 4/245:23 pm
IAH
-
MIA
Nonstop2h 27m
Multiple Airlines
Deal found 2/3$85
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 4/109:45 pm
MIA
-
IAH
Nonstop3h 04m
Spirit Airlines
Sun 4/2611:37 am
IAH
-
MIA
Nonstop2h 27m
Spirit Airlines
Deal found 2/3$86

Find 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 February 7, 2026.

Round-trip from

$74
(Cheapflightsfares)

One-way from

$35
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$199
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. 5% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 7, 2026.
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 5/1

11:34 am-1:39 pm

Nonstop3h 05m

Houston George Bush Intcntl

Thu 5/7

2:39 pm-6:08 pm

Nonstop2h 29m

$85

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 3/5

7:00 am-9:13 am

Nonstop3h 13m

Houston George Bush Intcntl

Thu 3/12

2:39 pm-6:08 pm

Nonstop2h 29m

$85

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sat 2/14

3:09 pm-5:30 pm

Nonstop3h 21m

Houston George Bush Intcntl

Thu 2/19

10:08 am-1:40 pm

Nonstop2h 32m

$88

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 2/26

9:53 pm-11:59 pm

Nonstop3h 06m

Houston George Bush Intcntl

Tue 3/24

7:05 am-7:16 pm

1 stop11h 11m

$89

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 2/26

7:00 am-9:13 am

Nonstop3h 13m

Houston George Bush Intcntl

Tue 3/24

7:05 am-7:16 pm

1 stop11h 11m

$90

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 3/19

9:45 pm-11:49 pm

Nonstop3h 04m

Houston George Bush Intcntl

Sun 3/22

5:24 pm-8:44 pm

Nonstop2h 20m

$90

MiamiHouston

MIA - IAH

MIAIAH

Miami

Thu 2/26

9:53 pm-11:59 pm

Nonstop3h 06m

Houston George Bush Intcntl

Sun 3/1

5:24 pm-8:51 pm

Nonstop2h 27m

$90

MiamiHouston

MIA - IAH

MIAIAH

Miami

Tue 2/24

9:53 pm-11:59 pm

Nonstop3h 06m

Houston George Bush Intcntl

Thu 2/26

5:24 pm-8:51 pm

Nonstop2h 27m

$90

MiamiHouston

MIA - IAH

MIAIAH

Miami

Wed 4/8

9:45 pm-11:49 pm

Nonstop3h 04m

Houston George Bush Intcntl

Sun 4/19

5:23 pm-8:50 pm

Nonstop2h 27m

$91

MiamiHouston

MIA - IAH

MIAIAH

Miami

Sat 4/11

9:45 pm-11:49 pm

Nonstop3h 04m

Houston George Bush Intcntl

Sat 4/25

5:05 am-12:38 pm

1 stop6h 33m

$92

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

Showing 1-10 of 24 results
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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 January 30, 2026.

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 55 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 $112). 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 February 7, 2026.

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 in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 54% 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 February 23, 2025.

Travelers seeking maximum savings on their Key Largo to Houston George Bush Intcntl Airport flight should consider departing on Saturday evenings 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 February 7, 2026.

The most flights from KE9 to IAH are scheduled on a Friday (31 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (20 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 February 7, 2026.
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
9,245 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

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
9,245 reviews
United Airlines
7.4
Good
9,245 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

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
11,247 reviews
United Airlines
7.4
Good
9,245 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

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
8,421 reviews
United Airlines
7.4
Good
9,245 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

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
5.7
Fair
3,054 reviews
United Airlines
7.4
Good
9,245 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

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 05m. Fly via Frontier or 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 ($39), Frontier ($40), and United Airlines ($63).

  • 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: ITA Airways (100%), Avianca (97%), ANA( 96%).

  • 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 $946, our data indicates the cheapest price to be $48. The most popular route (Miami - Houston George Bush Intcntl), is priced around $57.

  • 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 $112). 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
Spring
Katy
The Woodlands
Tomball
Conroe
Humble
Jersey Village
Cypress

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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 February 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$26Average$133FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$58Average$144FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$107Average$295FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$120Average$279FlexibilityNo cancel feeOn-time69%

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