Flight YX4678
Republic Airways flight YX4678
Looking for YX4678 in the air…
Boston (BOS) to St Louis (STL)
Historically, this flight arrives 15+ minutes late 47% of the time, and when it is late the delay averages 81 minutes. It was cancelled 5.8% of the time.
- On-time arrivals
- 52.6%
- Less than 15 minutes late
- Cancelled
- 5.8%
- Of scheduled flights
- Average delay when late
- 81 min
- Flights arriving 15+ minutes late
- Flights tracked
- 103
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 63%
- Air traffic control & airport 20%
- Airline (crew, maintenance, cleaning) 17%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
St Louis (STL) to Boston (BOS)
Historically, this flight arrives 15+ minutes late 43% of the time, and when it is late the delay averages 104 minutes. It was cancelled 6.9% of the time.
- On-time arrivals
- 56.8%
- Less than 15 minutes late
- Cancelled
- 6.9%
- Of scheduled flights
- Average delay when late
- 104 min
- Flights arriving 15+ minutes late
- Flights tracked
- 102
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 74%
- Security 13%
- Air traffic control & airport 7%
- Airline (crew, maintenance, cleaning) 5%
- Extreme weather 1%
Share of delay minutes airlines attributed to each cause (BTS).
Pittsburgh (PIT) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 23% of the time, and when it is late the delay averages 85 minutes. It was cancelled 1.3% of the time.
- On-time arrivals
- 76.6%
- Less than 15 minutes late
- Cancelled
- 1.3%
- Of scheduled flights
- Average delay when late
- 85 min
- Flights arriving 15+ minutes late
- Flights tracked
- 78
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 45%
- Late-arriving aircraft 42%
- Airline (crew, maintenance, cleaning) 9%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Albany (ALB)
Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 94 minutes. It was cancelled 2.2% of the time.
- On-time arrivals
- 80.0%
- Less than 15 minutes late
- Cancelled
- 2.2%
- Of scheduled flights
- Average delay when late
- 94 min
- Flights arriving 15+ minutes late
- Flights tracked
- 46
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 51%
- Extreme weather 30%
- Air traffic control & airport 18%
- Airline (crew, maintenance, cleaning) 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Albany (ALB) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 34% of the time, and when it is late the delay averages 83 minutes. It was cancelled 8.9% of the time.
- On-time arrivals
- 65.9%
- Less than 15 minutes late
- Cancelled
- 8.9%
- Of scheduled flights
- Average delay when late
- 83 min
- Flights arriving 15+ minutes late
- Flights tracked
- 45
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 52%
- Air traffic control & airport 45%
- Airline (crew, maintenance, cleaning) 2%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
New York (JFK) to Nashville (BNA)
Historically, this flight arrives 15+ minutes late 21% of the time, and when it is late the delay averages 67 minutes. It was cancelled 10.8% of the time.
- On-time arrivals
- 78.8%
- Less than 15 minutes late
- Cancelled
- 10.8%
- Of scheduled flights
- Average delay when late
- 67 min
- Flights arriving 15+ minutes late
- Flights tracked
- 37
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 62%
- Air traffic control & airport 29%
- Airline (crew, maintenance, cleaning) 9%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
New York (LGA) to Tulsa (TUL)
Historically, this flight arrives 15+ minutes late 27% of the time, and when it is late the delay averages 75 minutes. It was cancelled 4.3% of the time.
- On-time arrivals
- 72.7%
- Less than 15 minutes late
- Cancelled
- 4.3%
- Of scheduled flights
- Average delay when late
- 75 min
- Flights arriving 15+ minutes late
- Flights tracked
- 23
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 78%
- Air traffic control & airport 15%
- Airline (crew, maintenance, cleaning) 7%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Tulsa (TUL) to New York (LGA)
Historically, this flight arrives 15+ minutes late 38% of the time, and when it is late the delay averages 48 minutes. It was cancelled 8.7% of the time.
- On-time arrivals
- 61.9%
- Less than 15 minutes late
- Cancelled
- 8.7%
- Of scheduled flights
- Average delay when late
- 48 min
- Flights arriving 15+ minutes late
- Flights tracked
- 23
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 57%
- Late-arriving aircraft 40%
- Airline (crew, maintenance, cleaning) 3%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Washington (DCA) to Jackson (JAN)
Only 4 flights on record, which is too few for reliable odds.
- On-time arrivals
- 33.3%
- Less than 15 minutes late
- Cancelled
- 25.0%
- Of scheduled flights
- Average delay when late
- 195 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 93%
- Airline (crew, maintenance, cleaning) 7%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Martha's Vineyard (MVY) to Philadelphia (PHL)
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
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 2
- Scheduled flights in the period
Philadelphia (PHL) to Louisville (SDF)
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
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 2
- Scheduled flights in the period
Louisville (SDF) to Philadelphia (PHL)
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
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 2
- Scheduled flights in the period
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 100.0% | 4 |
| October 2025 | 68.9% | 48 |
| November 2025 | 75.5% | 57 |
| December 2025 | 68.9% | 46 |
| January 2026 | 77.8% | 31 |
| February 2026 | 73.9% | 23 |
| March 2026 | 66.7% | 8 |
| April 2026 | 72.0% | 25 |
| May 2026 | 73.2% | 41 |
| June 2026 | 63.8% | 60 |
| July 2026 | 50.9% | 62 |
| August 2026 | 48.3% | 62 |
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