BOS → LAX

DL318

DL318 (Delta Air Lines) flies Boston to Los Angeles. Of 587 departures recorded from October 2024 to July 2026, 79.0% left on time, according to the US BTS.

Recorded departures by month

The most recent periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January1223▲ 91.7%
February1422▲ 57.1%
March2127▲ 28.6%
April2428▲ 16.7%
May3031▲ 3.3%
June30300.0%
July31310.0%
August31––
September30––
October31–in progress
November30––
December31––
Year to date (Jan–Jul)162192▲ 18.5%

according to the US BTS · October 2024 → July 2026

On-time departures by month

All legs combined

On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.

The most recent periods19 periods
PeriodOn time 2025On time 2026Change vs last year
January75.0%57.1%▼ 23.8%
February64.3%66.7%▲ 3.7%
March76.2%96.3%▲ 26.4%
April75.0%89.3%▲ 19.1%
May76.7%93.6%▲ 22.0%
June90.0%73.3%▼ 18.5%
July90.3%70.0%▼ 22.5%
August93.6%––
September70.0%––
October64.5%–in progress
November67.9%––
December77.4%––
Year-to-date average (Jan–Jul)78.2%78.0%▼ 0.2%

according to the US BTS · October 2024 → July 2026

Average departure delay by month

All legs combined

according to the US BTS · October 2024 → July 2026

Cancelled departures by month

All legs combined
The most recent periods19 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January02–
February01–
March00–
April00–
May00–
June00–
July01–
August0––
September0––
October0–in progress
November2––
December0––
Year to date (Jan–Jul)04

according to the US BTS · October 2024 → July 2026

This is not a forecast

This is a historical record of departures already flown, not a forecast for your flight.

Cancellation share

  • Not cancelled 99.0% 581
  • Cancelled 1.0% 6

Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026

Legs flown under this number

1
RoutesDistance (km)Avg delay On timeDepartures
BOS LAX Boston Logan International Airport – Los Angeles International Airport 4,193 16.3 min 79.0% 587
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 95.0% 0
November 2024 29 29 93.1% 0
December 2024 31 31 67.7% 0
January 2025 12 12 75.0% 0
February 2025 14 14 64.3% 0
March 2025 21 21 76.2% 0
April 2025 24 24 75.0% 0
May 2025 30 30 76.7% 0
June 2025 30 30 90.0% 0
July 2025 31 31 90.3% 0
August 2025 31 31 93.6% 0
September 2025 30 30 70.0% 0
October 2025 31 31 64.5% 0
November 2025 30 28 67.9% 2
December 2025 31 31 77.4% 0
January 2026 23 21 57.1% 2
February 2026 22 21 66.7% 1
March 2026 27 27 96.3% 0
April 2026 28 28 89.3% 0
May 2026 31 31 93.6% 0
June 2026 30 30 73.3% 0
July 2026 31 30 70.0% 1

How to read this chart

Loading the guide…