Flight YX4378
Republic Airways flight YX4378
Looking for YX4378 in the air…
New York (JFK) to Raleigh/Durham (RDU)
Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 60 minutes. It was cancelled 4.8% of the time.
- On-time arrivals
- 80.0%
- Less than 15 minutes late
- Cancelled
- 4.8%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 210
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 41%
- Late-arriving aircraft 41%
- Airline (crew, maintenance, cleaning) 11%
- Extreme weather 4%
- Security 3%
Share of delay minutes airlines attributed to each cause (BTS).
New York (LGA) to Buffalo (BUF)
Historically, this flight arrives 15+ minutes late 32% of the time, and when it is late the delay averages 91 minutes. It was cancelled 9.2% of the time.
- On-time arrivals
- 67.6%
- Less than 15 minutes late
- Cancelled
- 9.2%
- Of scheduled flights
- Average delay when late
- 91 min
- Flights arriving 15+ minutes late
- Flights tracked
- 76
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 62%
- Air traffic control & airport 30%
- Airline (crew, maintenance, cleaning) 6%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Buffalo (BUF) to New York (LGA)
Historically, this flight arrives 15+ minutes late 41% of the time, and when it is late the delay averages 145 minutes. It was cancelled 16.9% of the time.
- On-time arrivals
- 59.3%
- Less than 15 minutes late
- Cancelled
- 16.9%
- Of scheduled flights
- Average delay when late
- 145 min
- Flights arriving 15+ minutes late
- Flights tracked
- 65
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 58%
- Airline (crew, maintenance, cleaning) 28%
- Air traffic control & airport 14%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Boston (BOS) to New York (LGA)
Historically, this flight arrives 15+ minutes late 14% of the time, and when it is late the delay averages 53 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 86.4%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 53 min
- Flights arriving 15+ minutes late
- Flights tracked
- 44
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 85%
- Airline (crew, maintenance, cleaning) 14%
- Air traffic control & airport 1%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
New York (LGA) to Boston (BOS)
Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 37 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 90.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 37 min
- Flights arriving 15+ minutes late
- Flights tracked
- 44
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 55%
- Air traffic control & airport 41%
- Airline (crew, maintenance, cleaning) 4%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Atlanta (ATL) to Washington (DCA)
Historically, this flight arrives 15+ minutes late 52% of the time, and when it is late the delay averages 30 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 48.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 30 min
- Flights arriving 15+ minutes late
- Flights tracked
- 25
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 57%
- Late-arriving aircraft 22%
- Airline (crew, maintenance, cleaning) 16%
- Extreme weather 4%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Washington (DCA) to Atlanta (ATL)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 58 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
- 58 min
- Flights arriving 15+ minutes late
- Flights tracked
- 25
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 98%
- Air traffic control & airport 2%
- Airline (crew, maintenance, cleaning) 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
In the news
More headlines →-
City Council backs $55 million in new Hartsfield-Jackson funding as construction projects multiply
The Business Journals ATL
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Over 400 flights cancelled due to severe weather at Hartsfield-Jackson Atlanta International Airport, Georgia
The Watchers - Watching the world evolve and transform ATL
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Hartsfield-Jackson Atlanta International Airport
The Aviation Hub ATL
Headlines found by Google News; stories open on the publisher's site.
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 90.0% | 30 |
| October 2025 | 67.7% | 31 |
| November 2025 | 81.5% | 29 |
| December 2025 | 74.1% | 28 |
| January 2026 | 80.8% | 30 |
| February 2026 | 96.0% | 28 |
| March 2026 | 76.6% | 47 |
| April 2026 | 86.2% | 58 |
| May 2026 | 75.0% | 60 |
| June 2026 | 76.6% | 56 |
| July 2026 | 55.1% | 58 |
| August 2026 | 66.7% | 34 |
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