Atlanta to Houston
ATL to IAH
As of 2026-11-11
Cheap Flights from Denver (DEN) to Houston (IAH)
- About 862 miles
- About 2.2 hours
- Best months: Mar, Apr, Nov
Fares from DEN to IAH start near $171, which makes Houston an easy add to your list. Once you land, Buffalo Bayou Park and Houston Zoo are good first stops. The flight covers roughly 862 miles.
Tips for finding a lower fare
- Compare a few departure days. Midweek flights from Denver often cost less than Friday and Sunday.
- Check both DEN and nearby airports before you book, since small fare gaps add up.
- Set a price alert and book when the fare drops under $171.
Airlines on this route
United, Southwest, Frontier
Things to see in Houston
- Buffalo Bayou Park
- Houston Zoo
Frequently asked questions
When is the cheapest time to fly from Denver to Houston?
Fares on DEN to IAH are often lower in Mar, Apr and Nov. Prices move with demand, so compare a few dates on the partner site before you decide.
How long is the flight from DEN to IAH?
A nonstop flight takes about 2.2 hours. Itineraries with a connection take longer, depending on the layover.
Which airlines fly from Denver to Houston?
Carriers we commonly see on this route include United, Southwest and Frontier. Schedules and availability change, so check current options when you search.
How far ahead should I book DEN to IAH?
For most domestic trips, booking about 1 to 3 months ahead gives a good balance of price and choice. Holiday travel is better booked earlier.
Is the price I see here the final price?
No. Fares shown on this page are indicative and change often. The final price, taxes and fees are shown on the partner site at booking.
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