$56 Cheap Flights from Denver (DEN) to Houston (IAH)

View $56 flight on Sat, Sep 27, 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH)

Cheap Flights from Denver to Houston (DEN-IAH)

Prices were available within the past 7 days and start at $56 for one-way flights and $102 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Nov 8 - Sat, Nov 15
DEN
Denver
IAH
Houston
$102 Roundtrip, just found
$102
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Nov 8 from Denver to Houston, returning Sat, Nov 15, priced at $102 just found
Frontier Airlines
Sat, Sep 27 - Tue, Sep 30
DEN
Denver
IAH
Houston
$105 Roundtrip, found 2 hours ago
$105
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, Sep 27 from Denver to Houston, returning Tue, Sep 30, priced at $105 found 2 hours ago
Frontier Airlines
Thu, Oct 23 - Wed, Oct 29
DEN
Denver
IAH
Houston
$118 Roundtrip, just found
$118
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 23 from Denver to Houston, returning Wed, Oct 29, priced at $118 just found
Frontier Airlines
Sat, Sep 27 - Mon, Sep 29
DEN
Denver
IAH
Houston
$121 Roundtrip, found 3 hours ago
$121
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, Sep 27 from Denver to Houston, returning Mon, Sep 29, priced at $121 found 3 hours ago
Frontier Airlines
Wed, Oct 1 - Tue, Oct 7
DEN
Denver
IAH
Houston
$125 Roundtrip, found 1 hour ago
$125
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, Oct 1 from Denver to Houston, returning Tue, Oct 7, priced at $125 found 1 hour ago
United
Wed, Oct 29 - Tue, Nov 4
DEN
Denver
IAH
Houston
$127 Roundtrip, found 1 hour ago
$127
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Oct 29 from Denver to Houston, returning Tue, Nov 4, priced at $127 found 1 hour ago
Frontier Airlines
Sat, Nov 8 - Sat, Nov 15
DEN
Denver
IAH
Houston
$127 Roundtrip, just found
$127
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Nov 8 from Denver to Houston, returning Sat, Nov 15, priced at $127 just found
American Airlines
Sat, Oct 18 - Wed, Oct 22
DEN
Denver
IAH
Houston
$145 Roundtrip, just found
$145
Roundtrip
just found
Select American Airlines flight, departing Sat, Oct 18 from Denver to Houston, returning Wed, Oct 22, priced at $145 just found
Delta
Fri, Nov 7 - Sun, Nov 9
DEN
Denver
IAH
Houston
$217 Roundtrip, just found
$217
Roundtrip
just found
Select Delta flight, departing Fri, Nov 7 from Denver to Houston, returning Sun, Nov 9, priced at $217 just found
Alaska Airlines
Tue, Nov 4 - Fri, Nov 14
DEN
Denver
IAH
Houston
$353 Roundtrip, found 17 hours ago
$353
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Tue, Nov 4 from Denver to Houston, returning Fri, Nov 14, priced at $353 found 17 hours ago

Find the cheapest month to fly from Denver (DEN) to Houston (IAH)

February is typically the cheapest month to fly

From $48 - $627 per traveler.

Alternative airports near Houston

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to George Bush Intercontinental IAH. Cheapest option available. Average driving time to city center is 24 minutes. Flights from $212
IAH
George Bush Intercontinental
Cheapest
Average driving time to city center24 min
Flights from $212
Flights from Denver (DEN) to Houston (IAH)
Origin airport
Denver Intl.
Destination airport
George Bush Intercontinental
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$102
Distance
861 mi
Average flight time
3 hours 23 mins

Denver to Houston Flights

The cheapest times to fly from Denver to Houston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Houston are during the month of November. You can find some of the cheapest flights from Denver to Houston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Houston

Sunday is one of the best days to book for cheap flights from Denver to Houston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Houston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Houston in 2025. You can also book with separate airlines for your outbound and return journeys, from $56 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Houston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Houston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH) cost?
Secure a cheap one-way flight from $56 or cheap return flight from $102 from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH)?
The cheapest month to fly from DEN to IAH is November, when there's less demand. Off-peak season is typically when airlines offer lower prices between these airports.
Which airlines fly direct from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH)?
You can travel nonstop from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH) on a United Airlines flight.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH)?
While prices can vary depending on when you travel, Frontier Airlines and United Airlines are go-to choices for flights between Denver Intl. Airport (DEN) and George Bush Intercontinental Airport (IAH). You can also compare airlines on Expedia and use the "Sort by" filter to find the best deal for your DEN to IAH flight.
How many flights per day from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH)?
When jetting out of Denver Intl. Airport (DEN), you can choose from an average of 12 daily nonstop flights to George Bush Intercontinental Airport (IAH).
What are the most popular departure times for flights from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH)?
More travelers fly between DEN and IAH at 7 AM than at any other point in the day. Looking for a quieter experience? Try choosing a quieter departure window and you could save on your ticket as well.
What day of the week has the most flights from DEN to IAH?
Monday has the most flights from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH). Consider taking off on this day and you'll have the best chance of finding a departure that fits your schedule.
What is the earliest flight from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH)?
Denver Intl. Airport (DEN)'s first flight to George Bush Intercontinental Airport (IAH) is at approximately 5:00AM UTC-7. With a flight time of 2h 31m, you'll arrive at around 8:31AM UTC-6.
How long does it take to fly from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH)?
The average flight duration from DEN to IAH is 2 hours and 30 minutes, covering a total distance of 860 mi.
What airline has the least delays from DEN to IAH?
Consider booking with Southwest Airlines if you'd like to fly straight from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH) without any holdups. This carrier has the strongest track record for punctuality, with an on-time performance of 88%. Want to be updated if anything changes? You can check your flight status using the Expedia App.
What is the best time to fly from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH)?
To avoid possible delays on the Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH) route, fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Houston from Denver Intl. Airport (DEN)?
Board a direct flight from Denver Intl. Airport (DEN) to Houston and arrive at George Bush Intercontinental Airport (IAH). Another arrival point to this destination is William P. Hobby Airport (HOU).
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH) last-minute?
Booking your plane ticket from DEN to IAH right before your journey is usually more expensive. However, if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a DEN to IAH flight and hotel package?
Compared with arranging flights and hotels separately, booking a DEN to IAH flight and hotel package with Expedia could result in significant savings. Better still, having everything in one convenient place will take the stress out of planning your trip. Simply secure your flights and choose from our wide range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH)?
Typically, it's possible to reschedule or cancel your DEN to IAH flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.