The sector is held by ATI, Frontier Airlines and United Airlines.
Airport pair · hand carry reference
DEN Denver to IAH Houston
Denver International, the United States, to George Bush Intercontinental, the United States. Computed from the scheduled network held on 2026-09-07.
- Nonstop
- 15.6 times a day
- Great circle
- 1,388 km
- Block, estimated
- 2h 16m
- Door to door
- 9h 01m
What DEN to IAH looks like
The DEN to IAH sector, the carriers on it and the flying time, before anything is promised to anybody.
Denver DEN to Houston IAH is a medium haul sector of 1,388 km by great circle, flown nonstop 15.6 times a day.
At the cruise speed this site models for 1,388 km, 830 km an hour, and thirty minutes of taxi at the two ends, the flight blocks at about 2h 16m.
Denver DEN is a major hub in the network held here, 245 scheduled destinations and 1,131.7 departures a day. Houston IAH has 197 destinations and 641 departures a day.
Houston is one hour ahead of Denver all year.
The pair sits inside the Americas, a corridor where the site already publishes 13 written lanes that go into customs and ground detail this page does not.
Who flies the sector, and how often
Average daily frequencies on DEN to IAH from the scheduled route statistics, both directions, with the operating carriers named.
| Direction | Flights a day | Flights a week | Operated by |
|---|---|---|---|
| DEN to IAH | 15.57 | 109 | ATI, Frontier Airlines, United Airlines |
| IAH to DEN | 15.71 | 110 | ATI, Frontier Airlines, United Airlines |
3 carriers are recorded on the sector, so a missed departure is normally a rebooking rather than a lost day.
At 15.6 times a day there is usually another departure within a few hours, which is what makes a same day booking on this pair realistic.
Between them the two directions put about 219 departures a week on DEN to IAH, which is the number that decides whether a seat can be found today or on Thursday.
The clock from collection to signature
The same ground timings the route calculator starts from, applied to the 2h 16m block time on DEN to IAH. Change any of them in the tool further down and the total moves with them.
| Stage | Allowed | Elapsed |
|---|---|---|
| Collection and the run to DEN | 90 min | 1h 30m |
| At DEN before departure | 180 min | 4h 30m |
| DEN to IAH in the air, estimated | 136 min | 6h 46m |
| Formalities at IAH | 90 min | 8h 16m |
| Delivery run in Houston | 45 min | 9h 01m |
| Door to door | 541 min | 9h 01m |
On the desk standard ground timings, ninety minutes to collect and reach the airport, three hours at the airport before departure, ninety minutes of arrival formalities and a forty five minute delivery run, the door to door figure for DEN to IAH is 9h 01m.
A courier who leaves Denver at 09:00 local is on the ground in Houston at about 12:16 local and at the door by 14:31 the same day.
Working backwards from a six in the evening handover in Houston, the last useful departure from Denver is around 12:29 local.
When the nonstop does not work
Every airport that joins the two ends, ranked by when they land, among the ones whose weaker leg is dependable enough to plan on. Connection time is allowed for the size of the hub. 69 of them join DEN to IAH.
| Connecting at | DEN to hub, flights a day | Hub to IAH, flights a day | Track, km | Estimated, gate to gate |
|---|---|---|---|---|
| Dallas DFW | 20 | 19.57 | 1,394 | 4h 21m |
| Albuquerque ABQ | 10.14 | 2.86 | 1,759 | 4h 22m |
| Kansas City MCI | 14.57 | 3.86 | 1,892 | 4h 25m |
| El Paso ELP | 5.86 | 7.29 | 1,981 | 4h 32m |
| New Orleans MSY | 5.43 | 9 | 2,197 | 4h 54m |
| Memphis MEM | 4.71 | 5.14 | 2,155 | 4h 54m |
With 15.6 times a day on the nonstop, a connection here is a disruption plan rather than a routing, and it is listed because a closed runway or a cancellation wave is exactly when nobody has time to work it out.
69 airports connect the two ends on the scheduled network held here. The quickest of the dependable ones is Dallas DFW, where the weaker of the two legs still runs 19.6 times a day.
Through DFW the routing covers 1,394 km against the 1,388 km nonstop track and takes about 4h 21m in the air and on the ground at the hub, allowing 90 minutes to connect at an airport of that size.
That is only 2h 05m more than the nonstop, which is close enough that a connection is worth taking when the nonstop is full or badly timed.
Behind it, Albuquerque ABQ at 4h 22m and Kansas City MCI at 4h 25m hold the same connection, so a booking has three hubs to try before it has to wait for the nonstop.
If nothing suitable leaves Houston, Houston HOU is 38 km away by great circle and carries 145 scheduled destinations of its own, which is usually a shorter road transfer than a lost day.
Plan Denver to Houston yourself
The same tool the dispatchers use, open to anybody and free. It is loaded with this pair already. Change either end, add a stopover or a preferred airline, and it works out the connection, the transit and the door to door clock, with the real departures underneath. Put it on your own site if it is useful to you.
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Restrictions
Where this came from, and where to look next
- Carriers and frequencies: AeroDataBox scheduled route statistics, retrieved 2026-09-07. Average daily flights, not a timetable.
- Distances: great circle from published coordinates. They read short against a flown track, which is why the block time above applies a factor to them.
- Block and connection times: the same model the route calculator lower down this page runs, at the same rounding.
- Restrictions: the airport notes file, checked 2026-09-07.
- Industrial sites: public company information. Nothing here says or implies that any company named is a customer of any courier operator.
Who publishes this. OnBoard Courier is a placement desk in Dubai. An assignment is carried out by a vetted partner operator, with the desk as the single point of contact from the quote to the signature. This page exists because our own dispatchers need the answer for DEN to IAH in the twenty minutes before a promise is made, and a reference only one operator can read is not a reference. Free to read, quote and cite. Found an error? Tell us and we will correct it.
If you need something moved rather than looked up, the desk prices a hand carry in fifteen minutes.
- The DEN airport entry
- The IAH airport entry
- Hand carry into the United States
- The written lane, Doha to Houston
- The written lane, Dubai to Houston
- The written lane, Houston to Aberdeen
- The route calculator
More pairs through DEN and IAH: Seattle to Denver, Atlanta to Denver, San Francisco to Denver, Boston to Denver, Detroit to Denver, Chicago to Denver, Los Angeles to Denver, Phoenix to Denver.