Flight UA1833
United Airlines flight UA1833
Looking for UA1833 in the airâŚ
Boston (BOS) to Newark (EWR)
Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 73 minutes. It was cancelled 1.5% of the time.
- On-time arrivals
- 92.8%
- Less than 15 minutes late
- Cancelled
- 1.5%
- Of scheduled flights
- Average delay when late
- 73 min
- Flights arriving 15+ minutes late
- Flights tracked
- 324
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 69%
- Air traffic control & airport 25%
- Extreme weather 6%
- Late-arriving aircraft 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Newark (EWR) to Cleveland (CLE)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 60 minutes. It was cancelled 5.2% of the time.
- On-time arrivals
- 90.1%
- Less than 15 minutes late
- Cancelled
- 5.2%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 96
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 40%
- Airline (crew, maintenance, cleaning) 36%
- Late-arriving aircraft 24%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Newark (EWR) to Key West (EYW)
Historically, this flight arrives 15+ minutes late 33% of the time, and when it is late the delay averages 95 minutes. It was cancelled 2.7% of the time.
- On-time arrivals
- 66.7%
- Less than 15 minutes late
- Cancelled
- 2.7%
- Of scheduled flights
- Average delay when late
- 95 min
- Flights arriving 15+ minutes late
- Flights tracked
- 37
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 83%
- Late-arriving aircraft 16%
- Airline (crew, maintenance, cleaning) 1%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Newark (EWR) to Las Vegas (LAS)
Historically, this flight arrives 15+ minutes late 12% of the time, and when it is late the delay averages 41 minutes. It was cancelled 5.6% of the time.
- On-time arrivals
- 88.2%
- Less than 15 minutes late
- Cancelled
- 5.6%
- Of scheduled flights
- Average delay when late
- 41 min
- Flights arriving 15+ minutes late
- Flights tracked
- 36
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 93%
- Airline (crew, maintenance, cleaning) 7%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Newark (EWR) to Palm Springs (PSP)
Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 112 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 82.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 112 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 94%
- Air traffic control & airport 6%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Newark (EWR) to Atlanta (ATL)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 38 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 90.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 38 min
- Flights arriving 15+ minutes late
- Flights tracked
- 21
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 54%
- Air traffic control & airport 46%
- Airline (crew, maintenance, cleaning) 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Newark (EWR) to Raleigh/Durham (RDU)
Only 19 flights on record, which is too few for reliable odds.
- On-time arrivals
- 57.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 37 min
- Flights arriving 15+ minutes late
- Flights tracked
- 19
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 50%
- Airline (crew, maintenance, cleaning) 36%
- Late-arriving aircraft 8%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Newark (EWR) to Salt Lake City (SLC)
Only 2 flights on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- â
- Flights arriving 15+ minutes late
- Flights tracked
- 2
- Scheduled flights in the period
Portland (PWM) to Newark (EWR)
Only 1 flight on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- â
- Flights arriving 15+ minutes late
- Flights tracked
- 1
- Scheduled flights in the period
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Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 92.2% | 51 |
| October 2025 | 86.1% | 37 |
| November 2025 | 86.4% | 59 |
| December 2025 | 71.9% | 32 |
| January 2026 | 84.9% | 57 |
| February 2026 | 85.3% | 37 |
| March 2026 | 89.8% | 50 |
| April 2026 | 100.0% | 30 |
| May 2026 | 97.5% | 40 |
| June 2026 | 96.3% | 55 |
| July 2026 | 82.4% | 54 |
| August 2026 | 89.5% | 58 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 â August 2026. Covers flights operated by reporting U.S. carriers. About our data