Flight YX4561

Republic Airways flight YX4561

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Looking for YX4561 in the air…

Boston (BOS) to Philadelphia (PHL)

Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 96 minutes. It was cancelled 4.4% of the time.

On-time arrivals

83.9%

Less than 15 minutes late

Cancelled

4.4%

Of scheduled flights

Average delay when late

96 min

Flights arriving 15+ minutes late

Flights tracked

91

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 50%
• Airline (crew, maintenance, cleaning) 30%
• Air traffic control & airport 18%
• Extreme weather 2%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Pittsburgh (PIT) to Washington (DCA)

Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 42 minutes. It was cancelled 0.0% of the time.

On-time arrivals

90.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

42 min

Flights arriving 15+ minutes late

Flights tracked

90

Scheduled flights in the period

What caused the delays

• Air traffic control & airport 88%
• Late-arriving aircraft 12%
• Airline (crew, maintenance, cleaning) 0%
• Extreme weather 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Philadelphia (PHL) to Hyannis (HYA)

Historically, this flight arrives 15+ minutes late 11% of the time, and when it is late the delay averages 45 minutes. It was cancelled 2.1% of the time.

On-time arrivals

89.4%

Less than 15 minutes late

Cancelled

2.1%

Of scheduled flights

Average delay when late

45 min

Flights arriving 15+ minutes late

Flights tracked

48

Scheduled flights in the period

What caused the delays

• Air traffic control & airport 81%
• Extreme weather 13%
• Late-arriving aircraft 6%
• Airline (crew, maintenance, cleaning) 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Washington (DCA) to Pittsburgh (PIT)

Historically, this flight arrives 15+ minutes late 3% of the time, and when it is late the delay averages 57 minutes. It was cancelled 0.0% of the time.

On-time arrivals

96.8%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

57 min

Flights arriving 15+ minutes late

Flights tracked

31

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).

Philadelphia (PHL) to Boston (BOS)

Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 96 minutes. It was cancelled 0.0% of the time.

On-time arrivals

80.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

96 min

Flights arriving 15+ minutes late

Flights tracked

30

Scheduled flights in the period

What caused the delays

• Airline (crew, maintenance, cleaning) 61%
• Late-arriving aircraft 26%
• Air traffic control & airport 13%
• Extreme weather 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Jacksonville (JAX) to Philadelphia (PHL)

Historically, this flight arrives 15+ minutes late 14% of the time, and when it is late the delay averages 116 minutes. It was cancelled 0.0% of the time.

On-time arrivals

85.7%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

116 min

Flights arriving 15+ minutes late

Flights tracked

28

Scheduled flights in the period

What caused the delays

• Extreme weather 49%
• Late-arriving aircraft 38%
• Air traffic control & airport 13%
• Airline (crew, maintenance, cleaning) 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Philadelphia (PHL) to Jacksonville (JAX)

Historically, this flight arrives 15+ minutes late 14% of the time, and when it is late the delay averages 65 minutes. It was cancelled 0.0% of the time.

On-time arrivals

85.7%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

65 min

Flights arriving 15+ minutes late

Flights tracked

28

Scheduled flights in the period

What caused the delays

• Airline (crew, maintenance, cleaning) 72%
• Late-arriving aircraft 28%
• Air traffic control & airport 0%
• Extreme weather 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

New York (LGA) to Charleston (CHS)

Historically, this flight arrives 15+ minutes late 50% of the time, and when it is late the delay averages 91 minutes. It was cancelled 20.0% of the time.

On-time arrivals

50.0%

Less than 15 minutes late

Cancelled

20.0%

Of scheduled flights

Average delay when late

91 min

Flights arriving 15+ minutes late

Flights tracked

20

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 80%
• Air traffic control & airport 17%
• Airline (crew, maintenance, cleaning) 3%
• Extreme weather 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

New York (JFK) to Chicago (ORD)

Only 19 flights on record, which is too few for reliable odds.

On-time arrivals

68.4%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

60 min

Flights arriving 15+ minutes late

Flights tracked

19

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 59%
• Air traffic control & airport 35%
• Airline (crew, maintenance, cleaning) 6%
• Extreme weather 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Chicago (ORD) to Boston (BOS)

Only 15 flights on record, which is too few for reliable odds.

On-time arrivals

60.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

95 min

Flights arriving 15+ minutes late

Flights tracked

15

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 49%
• Air traffic control & airport 26%
• Airline (crew, maintenance, cleaning) 20%
• Extreme weather 6%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Hyannis (HYA) to Philadelphia (PHL)

Only 14 flights on record, which is too few for reliable odds.

On-time arrivals

85.7%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

142 min

Flights arriving 15+ minutes late

Flights tracked

14

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 61%
• Air traffic control & airport 20%
• Airline (crew, maintenance, cleaning) 16%
• Extreme weather 4%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Myrtle Beach (MYR) to Boston (BOS)

Only 12 flights on record, which is too few for reliable odds.

On-time arrivals

91.7%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

80 min

Flights arriving 15+ minutes late

Flights tracked

12

Scheduled flights in the period

What caused the delays

• Airline (crew, maintenance, cleaning) 92%
• Air traffic control & airport 8%
• Late-arriving aircraft 0%
• Extreme weather 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Sep 2025 Aug 2026

Show as table

Month	On time	Flights
September 2025	100.0%	30
October 2025	96.4%	28
November 2025	0.0%	1
December 2025	62.1%	29
January 2026	76.7%	31
February 2026	80.0%	28
March 2026	90.9%	55
April 2026	78.8%	52
May 2026	92.9%	56
June 2026	85.0%	60
July 2026	90.3%	32
August 2026	55.0%	24

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