My trip
Plan a trip
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.
ATL → IAH
Atlanta to Houston · departing 9:15 PM
ATL → IAH flights departing 9 PM–5 AM arrive on time 68.2% of the time, against 75.4% across the whole day — your departure window is 7.2 points worse 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 ATL → IAH
Time of day
On ATL → IAH, flights leaving 5–9 AM arrived on time 83.8% of the time, against 68.2% for those leaving 9 PM–5 AM: 15.6 points more often.
- 5–9 AM83.8%
- 9 AM–12 PM82.9%
- 12–3 PM77.1%
- 3–6 PM69.9%
- 6–9 PM66.8%
- 9 PM–5 AM68.2%
Day of week
- Monday74.3%
- Tuesday77.5%
- Wednesday78.5%
- Thursday74.7%
- Friday74.5%
- Saturday77.2%
- Sunday71.8%
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 ATL → IAH, the ones scheduled closest to 9:15 PM first.
Within 90 minutes of 9:15 PM, DL1601 (usually 10:40 PM) has the best record: 71.6% on time and 2.50% cancelled over 1,119 flights, against 75.4% on time for ATL → IAH as a whole.
| Flight | Usually departs | On time | Cancelled |
|---|---|---|---|
| F94075Frontier AirlinesLive map | 9:25 PM10 min away | 59.2% | 2.61% |
| DL1284Delta Air LinesLive map | 7:59 PM76 min away | 71.3% | 1.90% |
| DL1601Delta Air LinesLive map | 10:40 PM85 min away | 71.6% | 2.50% |
| DL1131Delta Air LinesLive map | 5:00 PM255 min away | 63.9% | 1.13% |
| DL1223Delta Air LinesLive map | 4:25 PM290 min away | 73.6% | 1.08% |
| DL2890Delta Air LinesLive map | 1:59 PM436 min away | 68.0% | 0.00% |
| F91403Frontier AirlinesLive map | 6:00 AM525 min away | 75.4% | 1.83% |
| UA425United AirlinesLive map | 11:37 AM578 min away | 89.2% | 0.00% |
| UA532United AirlinesLive map | 7:00 AM585 min away | 87.3% | 0.49% |
| DL1585Delta Air LinesLive map | 7:05 AM590 min away | 84.9% | 2.12% |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Showing 10 of 11 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 ATL, not a promise about your day.
2h 0m before your 9:15 PM departure
How this was worked out
- FlyerIntel cannot currently obtain live security wait times for ATL, 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 Atlanta to Houston.
Who flies this route
Performance by the carrier that actually operates the flight.
| Carrier | Flights | On time | Cancelled | Median delay |
|---|---|---|---|---|
| Delta Air Lines | 7,359 | 76.1% | 1.49% | -2 min |
| United Airlines | 3,479 | 81.2% | 1.26% | -7 min |
| Frontier Airlines | 1,728 | 67.9% | 2.26% | -2 min |
| Spirit Airlines | 1,669 | 67.0% | 2.70% | 0 min |