Logan International in January 2025

82.8%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In January 2025, reporting carriers scheduled 10,624 domestic departures from Logan International (BOS). 82.8% left less than 15 minutes late and 77.4% reached their destination on time; 2.4% were cancelled.

Nationally that month, 79.3% of flights departed on time and 78.6% arrived on time, so BOS departures were 3.5 points above the national departure figure.

A year earlier, in January 2024, the airport had 10,134 departures with 74.8% leaving on time: a change of +8.0 points, with flights up 5%.

Flights arriving at BOS that month were on time 81.5% of the time (10,622 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 35%, air carrier 33% and late-arriving aircraft 29%.

On time 77.4%
Arrived 15+ minutes late 20.1%
Cancelled 2.4%
Diverted 0.2%

Every scheduled departure from BOS in January 2025, judged by arrival at the destination.

January 2025 against a year earlier, the airport's year and the nation

Measure	Jan 2025	Jan 2024	BOS, 12 months to Jul 2026	All reported flights, Jan 2025
Departed on time	82.8%	74.8%	74.4%	79.3%
Arrived on time	77.4%	72.2%	73.3%	78.6%
Cancelled	2.4%	3.2%	2.8%	3.0%
Average departure delay (late minutes only)	11.4 min	19.4 min	18.3 min	14.0 min
Scheduled departures a day	354	338	393	17,992
Scheduled departures	10,624	10,134	143,447	539,747

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	2,976	28%	69.4%	8.6 min	2.2%
YX Republic Airline	2,461	23%	82.6%	-3.7 min	3.3%
DL Delta Air Lines	1,832	17%	77.8%	5.2 min	1.3%
AA American Airlines	1,096	10%	79.8%	0.3 min	2.6%
UA United Airlines	919	9%	85.5%	-5.8 min	1.2%
NK Spirit Airlines	443	4%	79.0%	-0.7 min	3.6%
WN Southwest Airlines	424	4%	84.7%	-6.2 min	4.0%
F9 Frontier Airlines	178	2%	52.2%	29.7 min	2.8%
MQ Envoy Air	146	1%	72.6%	4.7 min	3.4%
AS Alaska Airlines	115	1%	89.6%	-19.1 min	0.0%
G4 Allegiant Air	17	0%	82.4%	5.5 min	0.0%
HA Hawaiian Airlines	17	0%	82.4%	39.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BOS–DCA	Boston to Washington	776	77.1%	0.8 min	7.6%
BOS–LGA	Boston to New York	554	81.0%	-4.2 min	2.3%
BOS–ORD	Boston to Chicago	487	84.6%	-3.5 min	0.6%
BOS–JFK	Boston to New York	428	79.9%	1.0 min	2.3%
BOS–MCO	Boston to Orlando	423	66.9%	11.7 min	1.7%
BOS–PHL	Boston to Philadelphia	389	83.8%	-2.0 min	1.5%
BOS–ATL	Boston to Atlanta	380	70.0%	10.9 min	4.2%
BOS–CLT	Boston to Charlotte	355	78.3%	2.3 min	2.5%
BOS–MIA	Boston to Miami	348	73.0%	6.1 min	0.6%
BOS–LAX	Boston to Los Angeles	320	88.1%	-5.7 min	0.0%
BOS–EWR	Boston to Newark	310	86.5%	-4.2 min	2.3%
BOS–BWI	Boston to Baltimore	306	87.3%	-6.6 min	4.6%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), January 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2025	Minutes
Air carrier	32.6%	36.2%	42,986
Late-arriving aircraft	28.7%	34.7%	37,902
National Aviation System	34.6%	19.9%	45,656
Extreme weather	3.9%	9.1%	5,176
Security	0.1%	0.2%	191

131,911 delay minutes on 2,134 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left BOS on time in January 2025?

82.8% of 10,624 scheduled domestic departures left less than 15 minutes late, and 77.4% reached their destination on time. The national figures that month were 79.3% and 78.6%.

How does that compare with a year earlier?

In January 2024, 74.8% of 10,134 departures left on time and 3.2% were cancelled, against 82.8% and 2.4% in January 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for January 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for BOS · methodology · corrections.