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Flight Reliability

DL 2066 · Delta Air Lines

Boston → Raleigh–Durham (BOS–RDU)96% of its flights flew this route. The rest (DFW–DTW) are included in these numbers.

87
Pretty Reliable
WanderNerd Reliability Score
90%
Arrive within 15 minutes
2 min early
Average arrival delay
2.7%
Cancelled
18 min early
Median arrival delay

Based on 292 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

DL 2066 departing between 6–9 AM arrived on time 91% of the time, versus 77% between 6–9 PM.

Sunday has been the better bet.

A small edge: 93% on time on Sundays against 89% on Thursdays.

Better than the BOS–RDU route average.

DL 2066 arrived on time 90% of the time, versus 77% across the BOS–RDU route.

Better than the Delta Air Lines network average.

DL 2066 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon89%(46 flights)
  • Tue91%(45 flights)
  • Wed89%(47 flights)
  • Thu89%(46 flights)
  • Fri90%(49 flights)
  • Sat—(8 flights)
  • Sun93%(43 flights)
On-time by departure window
  • 6–9 AM91%(271 flights)
  • 6–9 PM77%(13 flights)
On-time trend by month
96%
May

Jun 96% → May 96% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%24
July 202592%24
August 202596%23
September 202589%28
October 202592%24
November 2025100%17
December 202577%26
January 202681%21
February 202685%20
March 202689%26
April 202692%26
May 202696%25
Departures on time
91%
Diverted
0%
Flights flown
284
Months covered
12

Same route, other flights

Keep nerding

Based on 292 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.