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Flight Reliability

DL 350 · Delta Air Lines

Atlanta → Boston (ATL–BOS)

72
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
8 min
Average arrival delay
2.3%
Cancelled
3 min early
Median arrival delay

Based on 352 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

DL 350 departing between 9 AM–12 PM arrived on time 86% of the time, versus 71% between 12–3 PM.

Skip Thursday if you can.

DL 350 arrived on time 80% of the time on Fridays. On Thursdays: 69%.

Lagging the Delta Air Lines network.

DL 350 arrived on time 74% of the time, versus 81% across the Delta Air Lines network.

Slipping a little lately.

DL 350 arrived on time 79% of the time over the last three months in the data, compared with 85% in the three months before that.

The breakdown

On-time by weekday
  • Mon70%(46 flights)
  • Tue73%(51 flights)
  • Wed75%(52 flights)
  • Thu69%(52 flights)
  • Fri80%(51 flights)
  • Sat79%(42 flights)
  • Sun76%(49 flights)
On-time by departure window
  • 6–9 AM79%(28 flights)
  • 9 AM–12 PM86%(57 flights)
  • 12–3 PM71%(258 flights)
On-time trend by month
89%
May

Jun 53% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%30
July 202563%30
August 202587%31
September 202567%30
October 202555%29
November 202580%30
December 202587%30
January 202689%26
February 202678%23
March 202683%29
April 202666%29
May 202689%26
Departures on time
73%
Diverted
0.3%
Flights flown
343
Months covered
12

Same route, other flights

Keep nerding

Based on 352 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.