Flight YX4339
Republic Airways flight YX4339
Looking for YX4339 in the air…
New York (LGA) to Detroit (DTW)
Historically, this flight arrives 15+ minutes late 27% of the time, and when it is late the delay averages 59 minutes. It was cancelled 5.3% of the time.
- On-time arrivals
- 73.2%
- Less than 15 minutes late
- Cancelled
- 5.3%
- Of scheduled flights
- Average delay when late
- 59 min
- Flights arriving 15+ minutes late
- Flights tracked
- 150
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 48%
- Air traffic control & airport 35%
- Airline (crew, maintenance, cleaning) 16%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Washington (DCA)
Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 44 minutes. It was cancelled 3.9% of the time.
- On-time arrivals
- 83.7%
- Less than 15 minutes late
- Cancelled
- 3.9%
- Of scheduled flights
- Average delay when late
- 44 min
- Flights arriving 15+ minutes late
- Flights tracked
- 102
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 39%
- Air traffic control & airport 35%
- Late-arriving aircraft 19%
- Extreme weather 7%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
New York (JFK) to Washington (DCA)
Historically, this flight arrives 15+ minutes late 24% of the time, and when it is late the delay averages 111 minutes. It was cancelled 4.5% of the time.
- On-time arrivals
- 76.2%
- Less than 15 minutes late
- Cancelled
- 4.5%
- Of scheduled flights
- Average delay when late
- 111 min
- Flights arriving 15+ minutes late
- Flights tracked
- 44
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 46%
- Air traffic control & airport 41%
- Airline (crew, maintenance, cleaning) 14%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
St Louis (STL) to New York (LGA)
Historically, this flight arrives 15+ minutes late 4% of the time, and when it is late the delay averages 104 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 96.4%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 104 min
- Flights arriving 15+ minutes late
- Flights tracked
- 28
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 93%
- Air traffic control & airport 7%
- Airline (crew, maintenance, cleaning) 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Detroit (DTW) to New York (LGA)
Historically, this flight arrives 15+ minutes late 44% of the time, and when it is late the delay averages 67 minutes. It was cancelled 7.4% of the time.
- On-time arrivals
- 56.0%
- Less than 15 minutes late
- Cancelled
- 7.4%
- Of scheduled flights
- Average delay when late
- 67 min
- Flights arriving 15+ minutes late
- Flights tracked
- 27
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 53%
- Late-arriving aircraft 38%
- Airline (crew, maintenance, cleaning) 8%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
New York (LGA) to St Louis (STL)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 62 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 92.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 62 min
- Flights arriving 15+ minutes late
- Flights tracked
- 25
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 62%
- Air traffic control & airport 38%
- Airline (crew, maintenance, cleaning) 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Little Rock (LIT) to Miami (MIA)
Only 5 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
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 5
- Scheduled flights in the period
Rochester (ROC) to Washington (DCA)
Only 5 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
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 5
- Scheduled flights in the period
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 94.0% | 50 |
| October 2025 | 60.0% | 57 |
| November 2025 | 82.1% | 29 |
| December 2025 | 63.3% | 30 |
| January 2026 | 80.8% | 30 |
| February 2026 | 80.0% | 28 |
| March 2026 | 92.9% | 14 |
| April 2026 | 84.6% | 26 |
| May 2026 | 65.5% | 31 |
| June 2026 | 92.9% | 30 |
| July 2026 | 82.8% | 30 |
| August 2026 | 83.3% | 31 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data