My trip
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Tell FlyerIntel where and when you are flying. It will show how that route actually performs at that time of day and on that day of the week, what both airports are doing right now, and when to get to the airport.
IAH → DEN
Houston to Denver · departing 6:00 AM
IAH → DEN flights departing 5–9 AM arrive on time 89.7% of the time, against 79.4% across the whole day — your departure window is 10.3 points better than average for this route.
Your slot
Add a date above to see how that hour has done on your day of the week, and what a nearby slot would change.
Other times on IAH → DEN
Time of day
5–9 AM is among the most reliable times to leave on IAH → DEN: 89.7% on time.
- 5–9 AM89.7%
- 9 AM–12 PM83.0%
- 12–3 PM79.9%
- 3–6 PM67.7%
- 6–9 PM68.2%
- 9 PM–5 AM76.5%
Day of week
- Monday78.8%
- Tuesday81.6%
- Wednesday81.3%
- Thursday78.8%
- Friday78.5%
- Saturday79.1%
- Sunday78.0%
Bars start below the lowest figure so a real gap is visible; read the percentage, not the bar length. A time with too few flights to score is left unscored rather than guessed at.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · History describes what has happened on this route. It is not a prediction about your flight. Full route profile →
Which flight
Flights on IAH → DEN, the ones scheduled closest to 6:00 AM first.
Within 90 minutes of 6:00 AM, UA1874 (usually 5:15 AM) has the best record: 95.6% on time and 0.00% cancelled over 90 flights, against 79.4% on time for IAH → DEN as a whole.
| Flight | Usually departs | On time | Cancelled |
|---|---|---|---|
| F93229Frontier AirlinesLive map | 6:00 AM | 81.3% | 1.24% |
| UA1874United AirlinesLive map | 5:15 AM45 min away | 95.6% | 0.00% |
| UA1409United AirlinesLive map | 10:31 AM271 min away | 81.9% | 0.60% |
| F94855Frontier AirlinesLive map | 10:56 PM424 min away | 60.9% | 1.67% |
| F93205Frontier AirlinesLive map | 1:14 PM434 min away | 64.7% | 3.16% |
| UA1066United AirlinesLive map | 10:10 PM470 min away | 89.9% | 0.53% |
| F93227Frontier AirlinesLive map | 10:04 PM476 min away | 68.3% | 1.73% |
| UA1654United AirlinesLive map | 6:05 PM715 min away | 61.4% | 0.71% |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · “Usually departs” is the scheduled time each flight number most often had over the period; airlines retime flights, so confirm the time on your booking. Flight numbers with fewer than 90 operations on this route are left out. This is history, not a forecast for your flight.
When to get to the airport
A starting point for IAH, not a promise about your day.
2h 0m before your 6:00 AM departure
How this was worked out
- FlyerIntel cannot currently obtain live security wait times for IAH, so this figure does not account for the queue on the day.
- It does not include your journey to the airport, parking, or a shuttle from a remote lot.
- International departures, and travel with children, checked pets or special assistance, need more time.
Both airports right now
Aviation weather is not currently a factor.
Minimal operational impact. Conditions are not a notable factor for operations right now.
UpdatedAviation weather is not currently a factor.
Minimal operational impact. Conditions are not a notable factor for operations right now.
UpdatedSource: NOAA Aviation Weather Center · Conditions describe the airfield, not your flight, and change quickly.
Other ways to make this journey
Airport pairings serving Houston to Denver.
Who flies this route
Performance by the carrier that actually operates the flight.
| Carrier | Flights | On time | Cancelled | Median delay |
|---|---|---|---|---|
| United Airlines | 11,809 | 80.4% | 0.86% | -8 min |
| Frontier Airlines | 2,080 | 72.6% | 1.68% | -4 min |
| Southwest Airlines | 1,067 | 81.2% | 0.94% | -6 min |