Flight YX4389

Republic Airways flight YX4389

Read Republic Airways reviews →

Looking for YX4389 in the air…

Columbus (CMH) to Boston (BOS)

Historically, this flight arrives 15+ minutes late 13% of the time, and when it is late the delay averages 56 minutes. It was cancelled 2.5% of the time.

On-time arrivals

86.8%

Less than 15 minutes late

Cancelled

2.5%

Of scheduled flights

Average delay when late

56 min

Flights arriving 15+ minutes late

Flights tracked

163

Scheduled flights in the period

What caused the delays

• Air traffic control & airport 37%
• Late-arriving aircraft 34%
• Airline (crew, maintenance, cleaning) 22%
• Extreme weather 7%
• Security 0%

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

Boston (BOS) to Columbus (CMH)

Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 60 minutes. It was cancelled 3.8% of the time.

On-time arrivals

92.9%

Less than 15 minutes late

Cancelled

3.8%

Of scheduled flights

Average delay when late

60 min

Flights arriving 15+ minutes late

Flights tracked

104

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 55%
• Airline (crew, maintenance, cleaning) 24%
• Air traffic control & airport 14%
• Extreme weather 7%
• Security 0%

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

Cleveland (CLE) to New York (JFK)

Historically, this flight arrives 15+ minutes late 28% of the time, and when it is late the delay averages 142 minutes. It was cancelled 14.5% of the time.

On-time arrivals

72.3%

Less than 15 minutes late

Cancelled

14.5%

Of scheduled flights

Average delay when late

142 min

Flights arriving 15+ minutes late

Flights tracked

76

Scheduled flights in the period

What caused the delays

• Air traffic control & airport 66%
• Late-arriving aircraft 29%
• Airline (crew, maintenance, cleaning) 5%
• Extreme weather 0%
• Security 0%

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

New York (JFK) to Cleveland (CLE)

Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 75 minutes. It was cancelled 8.0% of the time.

On-time arrivals

84.1%

Less than 15 minutes late

Cancelled

8.0%

Of scheduled flights

Average delay when late

75 min

Flights arriving 15+ minutes late

Flights tracked

75

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 63%
• Air traffic control & airport 23%
• Airline (crew, maintenance, cleaning) 15%
• Extreme weather 0%
• Security 0%

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

Cedar Rapids (CID) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 95 minutes. It was cancelled 6.8% of the time.

On-time arrivals

82.9%

Less than 15 minutes late

Cancelled

6.8%

Of scheduled flights

Average delay when late

95 min

Flights arriving 15+ minutes late

Flights tracked

44

Scheduled flights in the period

What caused the delays

• Air traffic control & airport 41%
• Late-arriving aircraft 33%
• Airline (crew, maintenance, cleaning) 16%
• Extreme weather 10%
• Security 0%

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

Chicago (ORD) to Cedar Rapids (CID)

Historically, this flight arrives 15+ minutes late 26% of the time, and when it is late the delay averages 45 minutes. It was cancelled 2.3% of the time.

On-time arrivals

74.4%

Less than 15 minutes late

Cancelled

2.3%

Of scheduled flights

Average delay when late

45 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 30%
• Airline (crew, maintenance, cleaning) 15%
• 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 25% of the time, and when it is late the delay averages 76 minutes. It was cancelled 3.0% of the time.

On-time arrivals

75.0%

Less than 15 minutes late

Cancelled

3.0%

Of scheduled flights

Average delay when late

76 min

Flights arriving 15+ minutes late

Flights tracked

33

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 74%
• Air traffic control & airport 21%
• Extreme weather 6%
• Airline (crew, maintenance, cleaning) 0%
• Security 0%

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

Washington (DCA) to Key West (EYW)

Historically, this flight arrives 15+ minutes late 15% of the time, and when it is late the delay averages 35 minutes. It was cancelled 0.0% of the time.

On-time arrivals

85.2%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

35 min

Flights arriving 15+ minutes late

Flights tracked

27

Scheduled flights in the period

What caused the delays

• Air traffic control & airport 70%
• Late-arriving aircraft 19%
• Airline (crew, maintenance, cleaning) 11%
• Extreme weather 0%
• Security 0%

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

Key West (EYW) to Washington (DCA)

Historically, this flight arrives 15+ minutes late 15% of the time, and when it is late the delay averages 34 minutes. It was cancelled 0.0% of the time.

On-time arrivals

85.2%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

34 min

Flights arriving 15+ minutes late

Flights tracked

27

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 51%
• Air traffic control & airport 33%
• Airline (crew, maintenance, cleaning) 15%
• Extreme weather 0%
• Security 0%

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

New York (LGA) to Washington (DCA)

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

On-time arrivals

66.7%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

40 min

Flights arriving 15+ minutes late

Flights tracked

12

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 43%
• Air traffic control & airport 35%
• Airline (crew, maintenance, cleaning) 22%
• Extreme weather 0%
• Security 0%

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

Washington (DCA) to Pittsburgh (PIT)

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

New York (JFK) to Boston (BOS)

Only 2 flights on record, which is too few for reliable odds.

On-time arrivals

50.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

96 min

Flights arriving 15+ minutes late

Flights tracked

2

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 86%
• Air traffic control & airport 14%
• Airline (crew, maintenance, cleaning) 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	69.0%	30
October 2025	94.6%	57
November 2025	83.3%	60
December 2025	88.6%	46
January 2026	85.4%	52
February 2026	86.1%	38
March 2026	93.5%	31
April 2026	78.0%	53
May 2026	85.0%	61
June 2026	78.6%	60
July 2026	70.0%	62
August 2026	86.9%	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