Logan International in April 2026

79.5%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 April 2026, reporting carriers scheduled 12,626 domestic departures from Logan International (BOS). 79.5% left less than 15 minutes late and 78.9% reached their destination on time; 0.3% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so BOS departures were level with the national departure figure.

A year earlier, in April 2025, the airport had 12,413 departures with 82.6% leaving on time: a change of −3.1 points, with flights up 2%.

Flights arriving at BOS that month were on time 75.5% of the time (12,628 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 29% and national aviation system 27%.

On time 78.9%
Arrived 15+ minutes late 20.5%
Cancelled 0.3%
Diverted 0.2%

Every scheduled departure from BOS in April 2026, judged by arrival at the destination.

April 2026 against a year earlier, the airport's year and the nation

Measure	Apr 2026	Apr 2025	BOS, 12 months to Jul 2026	All reported flights, Apr 2026
Departed on time	79.5%	82.6%	74.4%	79.1%
Arrived on time	78.9%	80.0%	73.3%	78.9%
Cancelled	0.3%	0.3%	2.8%	0.9%
Average departure delay (late minutes only)	13.9 min	12.5 min	18.3 min	14.5 min
Scheduled departures a day	421	414	393	19,931
Scheduled departures	12,626	12,413	143,447	597,919

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	3,310	26%	75.7%	5.7 min	0.0%
YX Republic Airline	3,083	24%	80.3%	0.4 min	0.3%
DL Delta Air Lines	2,299	18%	80.7%	0.5 min	0.5%
AA American Airlines	1,481	12%	82.0%	2.4 min	0.6%
UA United Airlines	1,063	8%	86.3%	-1.9 min	0.2%
WN Southwest Airlines	608	5%	74.8%	7.6 min	0.0%
NK Spirit Airlines	307	2%	56.4%	27.3 min	1.6%
AS Alaska Airlines	161	1%	78.3%	2.3 min	0.0%
MQ Envoy Air	147	1%	81.0%	2.3 min	1.4%
F9 Frontier Airlines	107	1%	64.5%	8.7 min	0.9%
G4 Allegiant Air	60	0%	88.3%	-6.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BOS–DCA	Boston to Washington	783	77.9%	7.1 min	0.3%
BOS–LGA	Boston to New York	642	78.2%	5.2 min	0.5%
BOS–ORD	Boston to Chicago	641	74.6%	8.5 min	2.2%
BOS–MCO	Boston to Orlando	520	73.1%	9.4 min	0.4%
BOS–ATL	Boston to Atlanta	445	79.8%	-2.1 min	0.7%
BOS–JFK	Boston to New York	440	78.4%	3.7 min	0.0%
BOS–PHL	Boston to Philadelphia	419	76.1%	15.0 min	0.0%
BOS–SFO	Boston to San Francisco	381	69.6%	12.8 min	0.3%
BOS–FLL	Boston to Fort Lauderdale	367	68.1%	11.7 min	0.3%
BOS–LAX	Boston to Los Angeles	362	78.5%	8.3 min	0.3%
BOS–EWR	Boston to Newark	348	84.8%	-5.1 min	0.0%
BOS–CLT	Boston to Charlotte	339	90.6%	-12.9 min	0.0%

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), April 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2026	Minutes
Air carrier	29.4%	33.5%	47,366
Late-arriving aircraft	42.6%	40.4%	68,713
National Aviation System	26.5%	21.0%	42,702
Extreme weather	1.4%	5.0%	2,176
Security	0.1%	0.1%	155

161,112 delay minutes on 2,594 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 April 2026?

79.5% of 12,626 scheduled domestic departures left less than 15 minutes late, and 78.9% reached their destination on time. The national figures that month were 79.1% and 78.9%.

How does that compare with a year earlier?

In April 2025, 82.6% of 12,413 departures left on time and 0.3% were cancelled, against 79.5% and 0.3% in April 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2026; 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.