OnTimeRoutes
B

Delta Air Lines BOS to LGA on-time performance

Delta Air Lines nonstop flights from Boston to New York · Aug 2025 – Jul 2026

On-time arrivals
90%
arrived < 15 min late
Cancelled
4.7%
24 flights
Avg arrival delay
12 min
121 min when late
Rank on route
#1 of 2
route average 77% on time

Key facts

  • Delta Air Lines flights on BOS to LGA arrived on time 90% of the time in Aug 2025 – Jul 2026.
  • 4.7% were cancelled, and 5% arrived an hour or more late.
  • That ranks #1 of 2 airlines on this route, which averaged 77% on time overall.
  • The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (40%).

On-time trend by month

50%75%100%July 2025: 90.3% on time, 3.1% cancelledJul ’25August 2025: 88.2% on time, 2.3% cancelledAug ’25September 2025: 92.8% on time, 1.4% cancelledSep ’25October 2025: 91.7% on time, 4.0% cancelledOct ’25November 2025: 94.1% on time, 1.9% cancelledNov ’25December 2025: 85.7% on time, 10.6% cancelledDec ’25January 2026: 85.2% on time, 10.0% cancelledJan ’26February 2026: 87.9% on time, 8.3% cancelledFeb ’26March 2026: 87.5% on time, 0.0% cancelledMar ’26April 2026: 66.7% on time, 0.0% cancelledApr ’26May 2026: 100.0% on time, 3.7% cancelledMay ’26June 2026: 97.0% on time, 0.0% cancelledJun ’26July 2026: 93.8% on time, 8.6% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Airline (crew, maintenance, cleaning, fueling)40%
  • Late-arriving aircraft36%
  • Air traffic control & airport congestion21%
  • Extreme weather2%
  • Security0%

Other airlines on BOS to LGA

514 Delta Air Lines flights tracked on this route; 24 cancelled, 0 diverted.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.