Flight Reliability
UA 4949 · United Airlines
MOB → Washington (MOB–IAD)
83
Pretty Reliable
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 0.6%
- Cancelled
- 12 min early
- Median arrival delay
Based on 177 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
UA 4949 arrived on time 89% of the time on Fridays and just 74% on Mondays. That gap is worth planning around.
The breakdown
- Mon74%(27 flights)
- Tue80%(20 flights)
- Wed75%(20 flights)
- Thu86%(29 flights)
- Fri89%(28 flights)
- Sat80%(20 flights)
- Sun83%(30 flights)
64%
Dec
Jun 76% → Dec 64% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 29 |
| July 2025 | 70% | 30 |
| August 2025 | 81% | 31 |
| September 2025 | 96% | 27 |
| October 2025 | 89% | 18 |
| November 2025 | 95% | 20 |
| December 2025 | 64% | 14 |
- Departures on time
- 85%
- Diverted
- 1.1%
- Flights flown
- 174
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 177 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.