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Flight Reliability

DL 2118 · Delta Air Lines

Boston → Raleigh–Durham (BOS–RDU)

88
Pretty Reliable
WanderNerd Reliability Score
89%
Arrive within 15 minutes
1 min early
Average arrival delay
2.4%
Cancelled
14 min early
Median arrival delay

Based on 293 historical flights. Data through May 2026.

What the data says

The 9 AM–12 PM departure wins.

DL 2118 departing between 9 AM–12 PM arrived on time 91% of the time, versus 67% between 6–9 AM.

Sunday scaries are real for this one.

DL 2118 arrived on time 94% of the time on Mondays. On Sundays: 86%.

Better than the BOS–RDU route average.

DL 2118 arrived on time 89% of the time, versus 77% across the BOS–RDU route.

Better than the Delta Air Lines network average.

DL 2118 arrived on time 89% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon94%(46 flights)
  • Tue88%(49 flights)
  • Wed88%(50 flights)
  • Thu90%(48 flights)
  • Fri89%(46 flights)
  • Sat89%(26 flights)
  • Sun86%(21 flights)
On-time by departure window
  • 6–9 AM67%(21 flights)
  • 9 AM–12 PM91%(265 flights)
On-time trend by month
100%
May

Jun 100% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%26
July 202585%27
August 202589%27
September 202589%26
October 202586%29
November 202573%30
December 202584%19
January 202690%20
February 2026100%18
March 202685%20
April 202695%19
May 2026100%25
Departures on time
87%
Diverted
0%
Flights flown
286
Months covered
12

Same route, other flights

Keep nerding

Based on 293 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.