Cheap flights from Houston to Denver International

Compare Houston to Denver International flight deals

Find the cheapest month or even day of the year to fly to Denver International

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Flight deals from Houston to Denver International

Looking for a cheap last-minute deal or the best return flight from Houston to Denver International Airport? If you want to travel next month, return fares start from $158. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Houston to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Houston to Denver International flights are currently cheapest in August.

Direct flights from Houston to Denver International

Houston to Denver International: Alternative routes

Compare routes from Houston to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Houston to Denver: Flight information

The things to know before you go.
Cheapest flight found$41
Cheapest month to flyAugust
Average flight time2 hrs, 36 mins
Most popular airlineSouthwest Airlines
Average flights per week674

Finding cheap flights from Houston to Denver International: Frequently asked questions

The best price we found for a return flight from Houston to Denver International is $82. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 36 minutes is the average flight time from Houston to Denver International.
Southwest Airlines, United and Air Canada fly direct from Houston to Denver International.
As of June 2026, there are 674 flights per week flying from Houston to Denver International.
The cheapest month to fly from Houston to Denver International is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to Denver International Airport on Wednesday, 9 September 2026.
Yes – the average flight time is 2 hours and 36 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Denver International is Frontier Airlines .

Flying from Houston to Denver International Airport (DEN): What you need to know

  • Begin your journey at one of Houston's main airports, Houston George Bush Intercontinental Airport (IAH) or Houston Hobby Airport (HOU). Check out your options for booking a flight from Houston to Denver International Airport (DEN) taking off from either of these.

  • The average length of a direct Houston to Denver International Airport flight is 2 hours 35 minutes.

  • Denver is one hour behind Houston. Denver International Airport is located in Denver, which runs on the UTC-7 timezone.

  • The most popular route is from Houston George Bush Intercontinental Airport (IAH) to Denver International Airport (DEN), with 78 direct services every week. If you're ready to head out sooner, the earliest flight from IAH to DEN is the 5am United Airlines option. If a later start suits your schedule, the last departure is at 10:20pm with United Airlines.

  • Get to the airport on time so you don't miss your flight from Houston to DEN. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

  • Flying during a peak month like July? Busy periods (like spring break and New Year) can easily add another hour at check-in and security. Be extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

Airports in Houston

Houston George Bush Intercontinental Airport (IAH)

  • Houston George Bush Intercontinental Airport (IAH) will have you travelling directly to your destination. Nonstop flights from Houston to Denver International Airport (DEN) operate out of this terminal.

  • United Airlines is a popular carrier that operates direct flights from Houston to Denver International Airport departing from IAH.

  • United is the most frequently chosen airline for flights from IAH to DEN.

  • The carrier with the most reliable on-time arrival rate on this route is United.

  • Travelling from central Houston to IAH takes about 1 hour 10 minutes on public transport. If you ride-share, drive or take a taxi, you'll cover the 40 kilometres in 30 minutes or so, depending on traffic conditions.

  • In search of a convenient hotel close to Houston George Bush Intercontinental Airport? If you're catching an early flight from Houston to Denver International Airport, these accommodation options will have you sleeping moments from check-in:

  • Of the flights that depart from Houston George Bush Intercontinental Airport, 79% arrive on time at their destination.

  • IAH is located at 16930 JFK Boulevard.

Houston Hobby Airport (HOU)

  • You can book a direct Houston to Denver International Airport (DEN) plane ticket out of Houston Hobby Airport (HOU). Figure out if flying from HOU works better for your plans.

  • Board your direct flight from Houston to DEN with Southwest Airlines. This is one of the leading carriers flying this route out of HOU.

  • Southwest Airlines is the most frequently booked airline flying from HOU to DEN.

  • Want a carrier that consistently lands on time? Choose Southwest Airlines. 80.2% of its flights between Houston Hobby Airport and Denver International Airport land on schedule.

  • With public transport, you can travel from central Houston to HOU in around 50 minutes. The airport is roughly 19 kilometres away, and getting there by car will take approximately 20 minutes.

  • Get your holiday started early with an additional night away from home. Before your Houston to DEN flight, stay in one of these hotels near Houston Hobby Airport:

  • 79% of flights out of Houston Hobby Airport meet their expected arrival time.

  • HOU is located at 7800 Airport Boulevard.

About Denver International Airport (DEN)

  • Get off your flight from Houston to Denver International Airport and hop into your hotel bed shortly after. If you want a comfortable option that's not too far from DEN, stay at Baymont by Wyndham Denver International Airport.

  • To get the lowest price, reserve your ride around one week ahead of your Houston to Denver International Airport flight.

  • The address for DEN is 8500 Pena Boulevard.

Getting from Denver International Airport (DEN) to central Denver

  • Central Denver is around 40 kilometres from Denver International Airport and takes about 35 minutes to reach by car. Explore your options for getting into the city, whether that's with a taxi, car hire or ride-share.

  • Travelling on public transport takes around 35 minutes.

How to find the cheapest flights from Houston to Denver International Airport (DEN)

  • At the moment, $41 is the best price we've found for a one-way ticket from Houston to Denver International Airport. The cheapest price for a return flight is $82. Keep in mind fares may change due to availability at the time of booking.

  • Booking ahead of time is often the key to finding a cheap flight from Houston to DEN. Flight prices rise as demand increases, so the closer your departure date, the more you'll likely pay.

  • The 'Whole month' tool will show you the cheapest Houston to Denver International Airport tickets across the entire month. It's a great way to find a bargain if your travel dates aren't set in stone.

  • Spend less time searching for cheap plane tickets from Houston to DEN by setting up a Price Alert. We'll send you an email or push notification on the app when a lower fare becomes available.

  • Chase down a great fare on a flight from Houston to Denver International Airport with the help of the filters. Pick your ideal arrival and departure times, number of stops and airlines. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best.'

The best time to fly from Houston to Denver International Airport (DEN)

  • Think about the pace you're looking for when picking your flight dates. December is the quietest month to visit Denver. July is when most people book flights from Houston to Denver International Airport (DEN), which may be ideal if you enjoy travelling when it's busier.

  • When booking your Houston to DEN plane ticket, consider what kind of weather you prefer. July is the warmest month in Denver, with temperatures ranging from 14ºC (57ºF) to 32ºC (90ºF).

  • If you like cooler conditions, look for a cheap ticket from Houston to Denver International Airport in January when temperatures are between -9ºC (16ºF) and 7ºC (45ºF).

More about Denver

Explore more of the United States

  • You've seen Denver, now it's time to discover other parts of the United States. Journey around 113 kilometres south to Colorado Springs to tick off its top sights. From Garden of the Gods to Pikes Peak Region Attractions and Red Rock Canyon, you've got a jam-packed schedule ahead.

  • Pueblo is another favourite destination in the United States and is around 177 kilometres south of Denver. No journey is complete without experiencing Rosemount Museum, Cathedral of the Sacred Heart and Sangre de Cristo Arts & Conference Centre.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.