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

View AU$159 flight on Tue, 16 Dec. 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 18 Oct. - Sat, 25 Oct.
IAH
Houston
DEN
Denver
AU$286 Return, just found
AU$286
Return
just found
Select American Airlines flight, departing Sat, 18 Oct. from Houston to Denver, returning Sat, 25 Oct., priced at AU$286 just found
American Airlines
Sat, 18 Oct. - Sat, 25 Oct.
IAH
Houston
DEN
Denver
AU$332 Return, just found
AU$332
Return
just found
Select American Airlines flight, departing Sat, 18 Oct. from Houston to Denver, returning Sat, 25 Oct., priced at AU$332 just found
United
Sat, 18 Oct. - Sat, 25 Oct.
IAH
Houston
DEN
Denver
AU$341 Return, just found
AU$341
Return
just found
Select United flight, departing Sat, 18 Oct. from Houston to Denver, returning Sat, 25 Oct., priced at AU$341 just found
United
Sat, 18 Oct. - Sat, 25 Oct.
IAH
Houston
DEN
Denver
AU$347 Return, just found
AU$347
Return
just found
Select United flight, departing Sat, 18 Oct. from Houston to Denver, returning Sat, 25 Oct., priced at AU$347 just found
American Airlines
Thu, 16 Oct. - Thu, 23 Oct.
IAH
Houston
DEN
Denver
AU$350 Return, found 1 day ago
AU$350
Return
found 1 day ago
Select American Airlines flight, departing Thu, 16 Oct. from Houston to Denver, returning Thu, 23 Oct., priced at AU$350 found 1 day ago
American Airlines
Sat, 18 Oct. - Sat, 25 Oct.
IAH
Houston
DEN
Denver
AU$370 Return, just found
AU$370
Return
just found
Select American Airlines flight, departing Sat, 18 Oct. from Houston to Denver, returning Sat, 25 Oct., priced at AU$370 just found
Delta
Mon, 6 Oct. - Fri, 10 Oct.
IAH
Houston
DEN
Denver
AU$372 Return, found 1 day ago
AU$372
Return
found 1 day ago
Select Delta flight, departing Mon, 6 Oct. from Houston to Denver, returning Fri, 10 Oct., priced at AU$372 found 1 day ago
American Airlines
Sat, 18 Oct. - Sat, 25 Oct.
IAH
Houston
DEN
Denver
AU$377 Return, just found
AU$377
Return
just found
Select American Airlines flight, departing Sat, 18 Oct. from Houston to Denver, returning Sat, 25 Oct., priced at AU$377 just found
United
Sat, 18 Oct. - Sat, 25 Oct.
IAH
Houston
DEN
Denver
AU$379 Return, just found
AU$379
Return
just found
Select United flight, departing Sat, 18 Oct. from Houston to Denver, returning Sat, 25 Oct., priced at AU$379 just found
Alaska Airlines
Mon, 6 Oct. - Fri, 10 Oct.
IAH
Houston
DEN
Denver
AU$892 Return, found 1 day ago
AU$892
Return
found 1 day ago
Select Alaska Airlines flight, departing Mon, 6 Oct. from Houston to Denver, returning Fri, 10 Oct., priced at AU$892 found 1 day ago

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

February is typically the cheapest month to fly

From AU$74 - AU$457 per traveller.

Graph displaying average flight prices per month

Flight from Houston to Denver route information
Origin airport
George Bush Intercontinental
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Return price
AU$285
Distance
1378 km
Average flight time
1 hour 35 mins

Your quick guide to flights from Houston to Denver

Pick up great flights from Houston to Denver

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Houston to Denver. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Houston to Denver that take around hours.

Find cheap flights from Houston to Denver

From the great flight deals with prices currently ranging from AU$286 to AU$892, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Houston to Denver around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Denver is normally in October.

Reasons to book your flight from Houston to Denver with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Houston to Denver across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Denver right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from Houston Airport to DEN?
If you're planning on travelling from Houston Airport to DEN, round-trip flights start from AU$286. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don't wait around. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from IAH to DIA airport?
When it comes to cancellation fees, each airline has a different set of terms and conditions. If you decide to cancel your trip, visit our Customer Service Portal.
How do I find cheap flights from Houston Airport to Denver Intl. Airport (DEN) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for IAH to Denver Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from IAH to Denver Airport?
The flight distance from Houston Airport (IAH) to Denver Intl. Airport (DEN) (DEN) is 1 400 kilometres. You'll be disembarking the plane and grabbing your suitcase from the carousel in next to no time.
Which airlines fly direct from Houston Airport to DIA airport?
Travelling from George Bush Intercontinental Airport (IAH) to DEN is easy when you have a good range of airlines to select from. These are a few of the best:

  • United Airlines - (UA) with 304 monthly flights
  • Southwest Airlines - (WN) with 60 monthly flights
  • Frontier Airlines - (F9) with 43 monthly flights
  • Spirit Airlines - (NK) with 4 monthly flights

Are Houston Airport to DIA airport flight tickets cheaper when they're purchased at the last minute?
Flight prices from Houston Airport to Denver Airport are available up to 12 months prior to departure on Expedia. And although you may occasionally score a great last-minute deal, it's never a sure thing. Also, booking your flights ahead of time means you'll have more choices — and you can avoid getting stuck in the dreaded middle seat! We're always updating our fares to make sure you get the biggest bargains, so check back often for all the latest specials.

Explore a world of travel with Expedia

Houston Airports

Houston

George Bush Intercontinental to Denver
AU$285.40
*Available to Expedia members.