$54 Cheap Flights from Denver (DEN) to Houston (IAH)

View $54 flight on Sat, Aug 23, 2025Opens in a new window

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

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Cheap Flights from Denver to Houston (DEN-IAH)

Prices were available within the past 7 days and start at $54 for one-way flights and $108 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Oct 2 - Mon, Oct 6
DEN
Denver
IAH
Houston
$108 Roundtrip, just found
$108
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 2 from Denver to Houston, returning Mon, Oct 6, priced at $108 just found
Frontier Airlines
Sat, Aug 9 - Mon, Aug 11
DEN
Denver
IAH
Houston
$118 Roundtrip, found 1 hour ago
$118
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Aug 9 from Denver to Houston, returning Mon, Aug 11, priced at $118 found 1 hour ago
Frontier Airlines
Mon, Sep 29 - Wed, Oct 1
DEN
Denver
IAH
Houston
$128 Roundtrip, found 1 hour ago
$128
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Sep 29 from Denver to Houston, returning Wed, Oct 1, priced at $128 found 1 hour ago
Frontier Airlines
Mon, Sep 29 - Sat, Oct 4
DEN
Denver
IAH
Houston
$129 Roundtrip, found 18 hours ago
$129
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Mon, Sep 29 from Denver to Houston, returning Sat, Oct 4, priced at $129 found 18 hours ago
Frontier Airlines
Mon, Jul 28 - Thu, Aug 7
DEN
Denver
IAH
Houston
$132 Roundtrip, found 7 hours ago
$132
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Mon, Jul 28 from Denver to Houston, returning Thu, Aug 7, priced at $132 found 7 hours ago
United
Tue, Sep 30 - Thu, Oct 2
DEN
Denver
IAH
Houston
$133 Roundtrip, found 1 hour ago
$133
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Sep 30 from Denver to Houston, returning Thu, Oct 2, priced at $133 found 1 hour ago
Frontier Airlines
Mon, Aug 11 - Wed, Aug 13
DEN
Denver
IAH
Houston
$134 Roundtrip, found 1 hour ago
$134
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Aug 11 from Denver to Houston, returning Wed, Aug 13, priced at $134 found 1 hour ago
Frontier Airlines
Tue, Aug 26 - Sun, Sep 7
DEN
Denver
IAH
Houston
$135 Roundtrip, found 5 days ago
$135
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, Aug 26 from Denver to Houston, returning Sun, Sep 7, priced at $135 found 5 days ago
American Airlines
Wed, Aug 6 - Mon, Aug 11
DEN
Denver
IAH
Houston
$177 Roundtrip, found 3 hours ago
$177
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Wed, Aug 6 from Denver to Houston, returning Mon, Aug 11, priced at $177 found 3 hours ago
Alaska Airlines
Tue, Aug 19 - Sun, Aug 24
DEN
Denver
IAH
Houston
$442 Roundtrip, found 10 hours ago
$442
Roundtrip
found 10 hours ago
Select Alaska Airlines flight, departing Tue, Aug 19 from Denver to Houston, returning Sun, Aug 24, priced at $442 found 10 hours ago

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

August is typically the cheapest month to fly

From $48 - $162 per traveler.

Graph displaying average flight prices per month

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 $148
IAH
George Bush Intercontinental
Cheapest
Average driving time to city center24 min
Flights from $148
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 29 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 October. 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 $54 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?
Cheap return flights from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH) start at $108. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Frontier Airlines flight leaving DEN on July 28 2025 and touching down at IAH. The price was last updated on July 1 2025 and has not changed since.
What is the cheapest month to fly from DEN to IAH?
The cheapest flights from DEN to IAH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
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 DEN to IAH?
At the moment, the cheapest airline offering one-way flights from DEN to IAH is Frontier Airlines. You can book a seat on this route from $54. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from DEN on September 25 2025. Prices were last updated on July 1 2025 and have not changed since.
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.