Flight UA2311
United Airlines flight UA2311
Looking for UA2311 in the airâŚ
Houston (IAH) to Washington (DCA)
Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 59 minutes. It was cancelled 0.4% of the time.
- On-time arrivals
- 83.4%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 59 min
- Flights arriving 15+ minutes late
- Flights tracked
- 249
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 33%
- Air traffic control & airport 26%
- Late-arriving aircraft 23%
- Extreme weather 18%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Miami (MIA) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 68% of the time, and when it is late the delay averages 80 minutes. It was cancelled 2.2% of the time.
- On-time arrivals
- 31.8%
- Less than 15 minutes late
- Cancelled
- 2.2%
- Of scheduled flights
- Average delay when late
- 80 min
- Flights arriving 15+ minutes late
- Flights tracked
- 46
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 40%
- Airline (crew, maintenance, cleaning) 31%
- Late-arriving aircraft 28%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Los Angeles (LAX) to Houston (IAH)
Historically, this flight arrives 15+ minutes late 3% of the time, and when it is late the delay averages 66 minutes. It was cancelled 2.8% of the time.
- On-time arrivals
- 97.1%
- Less than 15 minutes late
- Cancelled
- 2.8%
- Of scheduled flights
- Average delay when late
- 66 min
- Flights arriving 15+ minutes late
- Flights tracked
- 36
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 87%
- Air traffic control & airport 13%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 30% of the time, and when it is late the delay averages 125 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 70.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 125 min
- Flights arriving 15+ minutes late
- Flights tracked
- 21
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Airline (crew, maintenance, cleaning) 35%
- Air traffic control & airport 21%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Fort Myers (RSW)
Only 9 flights on record, which is too few for reliable odds.
- On-time arrivals
- 88.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 50 min
- Flights arriving 15+ minutes late
- Flights tracked
- 9
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 100%
- Airline (crew, maintenance, cleaning) 0%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Dallas-Fort Worth (DFW) to Houston (IAH)
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
Tulsa (TUL) to Houston (IAH)
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 | 88.5% | 26 |
| October 2025 | 88.9% | 27 |
| November 2025 | 88.5% | 26 |
| December 2025 | 89.7% | 29 |
| January 2026 | 84.0% | 52 |
| February 2026 | 93.9% | 33 |
| March 2026 | 88.5% | 27 |
| April 2026 | 96.2% | 26 |
| May 2026 | 75.9% | 29 |
| June 2026 | 53.6% | 28 |
| July 2026 | 31.0% | 30 |
| August 2026 | 55.2% | 31 |
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