Flight Reliability
UA 4630 · United Airlines
MOT → Denver (MOT–DEN)88% of its flights flew this route. The rest (DEN–XWA, COS–DEN) are included in these numbers.
79
Usually Fine
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 0.8%
- Cancelled
- 10 min early
- Median arrival delay
Based on 358 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
UA 4630 departing between 9 AM–12 PM arrived on time 89% of the time, versus 76% between 3–6 PM.
Saturday is the weak spot.
UA 4630 arrived on time 84% of the time on Mondays. On Saturdays: 71%.
Recent months have been rougher.
UA 4630 arrived on time 73% of the time over the last three months in the data, compared with 81% in the three months before that.
The breakdown
- Mon84%(51 flights)
- Tue84%(50 flights)
- Wed78%(51 flights)
- Thu73%(51 flights)
- Fri79%(48 flights)
- Sat71%(52 flights)
- Sun75%(51 flights)
- 9 AM–12 PM89%(18 flights)
- 12–3 PM82%(73 flights)
- 3–6 PM76%(262 flights)
- 6–9 PM—(1 flights)
92%
May
Jun 69% → May 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 69% | 29 |
| July 2025 | 77% | 31 |
| August 2025 | 81% | 31 |
| September 2025 | 80% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 80% | 30 |
| December 2025 | 77% | 30 |
| January 2026 | 77% | 30 |
| February 2026 | 89% | 27 |
| March 2026 | 65% | 31 |
| April 2026 | 63% | 30 |
| May 2026 | 92% | 24 |
- Departures on time
- 77%
- Diverted
- 0.3%
- Flights flown
- 354
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 358 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.