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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.
DEN → IAH
Denver to Houston · departing 5:00 AM
DEN → IAH flights departing 5–9 AM arrive on time 88.2% of the time, against 76.8% across the whole day — your departure window is 11.4 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 DEN → IAH
Time of day
5–9 AM is among the most reliable times to leave on DEN → IAH: 88.2% on time.
- 5–9 AM88.2%
- 9 AM–12 PM81.2%
- 12–3 PM73.4%
- 3–6 PM70.9%
- 6–9 PM70.8%
- 9 PM–5 AM74.5%
Day of week
- Monday76.2%
- Tuesday78.7%
- Wednesday79.6%
- Thursday74.7%
- Friday74.5%
- Saturday77.6%
- Sunday76.3%
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 DEN → IAH, the ones scheduled closest to 5:00 AM first.
| Flight | Usually departs | On time | Cancelled |
|---|---|---|---|
| UA320United AirlinesLive map | 5:00 AM | 94.7% | 0.50% |
| F93206Frontier AirlinesLive map | 7:00 AM120 min away | 80.4% | 0.97% |
| UA1720United AirlinesLive map | 7:45 AM165 min away | 89.4% | 0.40% |
| UA1599United AirlinesLive map | 11:34 AM394 min away | 76.6% | 0.59% |
| F92996Frontier AirlinesLive map | 9:06 PM474 min away | 71.0% | 0.23% |
| F94856Frontier AirlinesLive map | 8:40 PM500 min away | 68.2% | 2.13% |
| UA1829United AirlinesLive map | 1:25 PM505 min away | 71.1% | 0.46% |
| UA2419United AirlinesLive map | 8:31 PM509 min away | 73.7% | 0.20% |
| UA475United AirlinesLive map | 7:20 PM580 min away | 72.0% | 0.64% |
| UA489United AirlinesLive map | 3:40 PM640 min away | 71.1% | 0.31% |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Showing 10 of 12 flight numbers. “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 DEN, not a promise about your day.
1h 45m before your 5:00 AM departure
How this was worked out
- FlyerIntel cannot currently obtain live security wait times for DEN, 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 Denver to Houston.
Who flies this route
Performance by the carrier that actually operates the flight.
| Carrier | Flights | On time | Cancelled | Median delay |
|---|---|---|---|---|
| United Airlines | 11,809 | 77.2% | 0.77% | -4 min |
| Frontier Airlines | 2,081 | 74.9% | 1.06% | -7 min |
| Southwest Airlines | 1,082 | 76.0% | 1.02% | -3 min |