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Flight Reliability

DL 318 · Delta Air Lines

Boston → Los Angeles (BOS–LAX)

78
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
11 min
Average arrival delay
1.4%
Cancelled
1 min early
Median arrival delay

Based on 345 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

DL 318 departing between 6–9 PM arrived on time 88% of the time, versus 70% between 9 AM–12 PM.

Skip Saturday if you can.

DL 318 arrived on time 84% of the time on Fridays. On Saturdays: 70%.

A bit behind the Delta Air Lines network.

DL 318 arrived on time 77% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 318 arrived on time 84% of the time over the last three months in the data, compared with 63% in the three months before that.

The breakdown

On-time by weekday
  • Mon74%(49 flights)
  • Tue75%(51 flights)
  • Wed75%(52 flights)
  • Thu78%(51 flights)
  • Fri84%(51 flights)
  • Sat70%(37 flights)
  • Sun78%(49 flights)
On-time by departure window
  • 9 AM–12 PM70%(40 flights)
  • 12–3 PM75%(75 flights)
  • 3–6 PM77%(200 flights)
  • 6–9 PM88%(25 flights)
On-time trend by month
94%
May

Jun 90% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202561%31
August 202594%31
September 202577%30
October 202577%31
November 202571%28
December 202552%31
January 202662%21
February 202676%21
March 202674%27
April 202686%28
May 202694%31
Departures on time
81%
Diverted
0%
Flights flown
340
Months covered
12

Same route, other flights

Keep nerding

Based on 345 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.