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Route guide

Cheap Flights from Houston to Denver | EazAir

Travellers

Houston to Denver flight insights

Average flight time

~2h 28m (estimated)

IAH → DEN

Cheapest month

—

Based on cached fare history

Cheapest cached price

$164

Checking live fares…

Last checked Sep 2, 2026

Planning a trip from Houston to Denver? The average flight time on this route is ~2h 28m (estimated). The lowest fare we have cached for this route is $164 (last checked Sep 2, 2026).

Houston to Denver covers a straight-line distance of about 862 miles. Based on that distance, a nonstop flight would take approximately ~2h 28m (estimated). Actual flight time varies by airline, aircraft and routing.

Route Quick Facts

Quick facts for flights from Houston to Denver on Eazair
OriginHouston (IAH)
DestinationDenver (DEN)
Average Flight Time—
Cheapest Month to Fly—
Current Lowest Fare$164
Fares Last CheckedSep 2, 2026

Flight deals from Houston to Denver

Direct flights from Houston to Denver typically take two hours and thirty minutes to cover the 864-mile distance. Travelers leaving Texas can depart from either George Bush Intercontinental Airport or William P. Hobby Airport, arriving at Denver International Airport. United Airlines operates a major hub in Houston and maintains another hub in Denver, making them the dominant carrier on this specific route. Southwest Airlines also provides heavy coverage between Houston and Denver, primarily flying out of Hobby Airport instead of Intercontinental. Frontier Airlines occasionally offers budget-friendly nonstop flights connecting these two distinct metropolitan areas. November, December, and March see the highest passenger volumes traveling from Houston to Denver, largely driven by Texas residents heading to Colorado ski resorts. Finding cheap airfare on the Houston to Denver route often requires booking at least four weeks before your anticipated departure date. Late spring and early fall represent the slower seasons for this flight path, resulting in lower ticket prices for those heading to the Rocky Mountains from the Texas Gulf Coast. Early morning departures out of Houston generally yield the most affordable rates for landing in Denver.

View of Denver, a popular flight destination from Houston

About Denver

Popular areas to know in Denver include LoDo (Lower Downtown), RiNo Art District, and Capitol Hill.

A semi-arid climate with over 300 sunny days a year; the high altitude keeps evenings cool even in summer, and winter brings snow to the nearby mountains.

Frequently asked questions

How long is the direct flight from Houston to Denver?
A nonstop flight originating in Houston and landing in Denver typically takes about two hours and thirty minutes from takeoff to touchdown.
Which airports handle flights traveling from Houston to Denver?
You will depart from either George Bush Intercontinental Airport (IAH) or William P. Hobby Airport (HOU) in Houston and arrive at Denver International Airport (DEN).
Which airlines fly nonstop from Houston to Denver?
United Airlines, Southwest Airlines, and Frontier Airlines provide direct routes connecting Houston to Denver on a daily or weekly basis.
What is the cheapest month to fly from Houston to Denver?
September and October usually offer the lowest airfares for travelers flying from Houston to Denver, as these months fall between the peak summer hiking and winter skiing seasons.
When is the busiest time of year to travel from Houston to Denver?
December and March are the most crowded months for the Houston to Denver route due to holiday travel and spring break ski trips.
What is the flight distance between Houston and Denver?
The aerial distance separating Houston and Denver is roughly 864 miles, making it a relatively quick mid-continental journey.
What should I pack in my carry-on when flying from Houston to Denver during winter?
Since you are leaving the warm Texas climate of Houston for freezing winter conditions in Denver, always pack a heavy coat and winter accessories directly in your cabin baggage.
How far in advance should I book my ticket from Houston to Denver?
Securing the best pricing for a flight from Houston to Denver typically requires purchasing your tickets at least 28 to 35 days before your departure.
Are morning flights cheaper than evening flights from Houston to Denver?
Yes, early morning departures leaving Houston tend to cost less than late afternoon or evening flights heading into Denver.
How do I get to the city center after my flight from Houston arrives in Denver?
Once your flight from Houston touches down at Denver International Airport, you can take the A Line commuter train directly to Union Station in downtown Denver.
How far is it from Houston to Denver?
The straight-line distance from Houston to Denver is about 862 miles.
What ID do I need to fly from Houston to Denver?
Since Houston to Denver is a domestic US flight, you'll need a REAL ID-compliant driver's license or another TSA-accepted form of ID, such as a valid US passport. A standard, non-compliant driver's license alone is no longer accepted at TSA checkpoints.
Which airlines operate flights from Houston to Denver?
Based on a recent live fare search, Delta Air Lines, United Airlines and American Airlines had bookable flights on the Houston to Denver route.
What's the weather usually like in Denver?
A semi-arid climate with over 300 sunny days a year; the high altitude keeps evenings cool even in summer, and winter brings snow to the nearby mountains.

Airline baggage policies

Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.

General airline baggage policy reference
AirlineCabin bagChecked bag
Delta Air Lines1 carry-on + 1 personal item on most fares1 checked bag typically included on Main Cabin and above; Basic Economy usually excludes it
American Airlines1 carry-on + 1 personal item on most fares1 checked bag typically included on Main Cabin and above; Basic Economy usually excludes it
United Airlines1 carry-on + 1 personal item on most fares1 checked bag typically included on Economy and above; Basic Economy usually excludes it
Southwest Airlines1 carry-on + 1 personal item2 checked bags included on every fare — a long-standing, well-known Southwest policy
JetBlue Airways1 personal item on the cheapest (Blue Basic) fare; a carry-on is added on higher faresNot included on Blue Basic; typically included from Blue Plus and above
Alaska Airlines1 carry-on + 1 personal item on most fares1 checked bag typically included on Main and above; Saver fares usually exclude it
Spirit Airlines1 personal item included; a full-sized carry-on is a paid add-onNot included on the base fare — a paid add-on at every fare tier
Frontier Airlines1 personal item included; a full-sized carry-on is a paid add-onNot included on the base fare — a paid add-on at every fare tier

Travel tips

Arrive early for domestic flights

TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.

Pack a mixed carry-on

Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.

Ease jet lag on longer routes

On longer cross-country flights, adjusting your sleep schedule a day or two before departure and staying hydrated in flight can reduce jet lag on arrival.

Screenshot your confirmation

Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.

Check in online when it opens

Most airlines open online check-in 24 hours before departure — checking in early can help with seat selection and, on some airlines, boarding group assignment.

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