Delta Air Lines RDU to BOS on-time performance
Delta Air Lines nonstop flights from Raleigh/Durham to Boston · Aug 2025 – Jul 2026
On-time arrivals
80%
arrived < 15 min late
Cancelled
2.7%
39 flights
Avg arrival delay
18 min
88 min when late
Rank on route
#2 of 4
route average 79% on time
Key facts
- Delta Air Lines flights on RDU to BOS arrived on time 80% of the time in Aug 2025 – Jul 2026.
- 2.7% were cancelled, and 10% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 79% on time overall.
- The largest source of delay minutes was late-arriving aircraft (45%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft45%
- Air traffic control & airport congestion39%
- Airline (crew, maintenance, cleaning, fueling)15%
- Extreme weather1%
- Security0%
Other airlines on RDU to BOS
- JetBlue77% on time · 17 min avg delay
- Frontier Airlines80% on time · 12 min avg delay
- Republic Airways81% on time · 17 min avg delay
Full RDU to BOS comparison →
Delta Air Lines on-time record across all routes →
1,434 Delta Air Lines flights tracked on this route; 39 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.