Boston (BOS) to Raleigh/Durham (RDU): On-Time Performance
Data through May 2026
Boston (BOS) to Raleigh/Durham (RDU) effectively runs on two schedules. In November 2024, 90% of arrivals were on time; in August 2024 that fell to 70% — a 20-point seasonal swing. Across the full period the route averages 78% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 63%), which matters most in the rough months.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 7.7
- last 12 months
- Duration
- 2h 11m
- scheduled
- Distance
- 612 mi
Best airline from BOS to RDU
4 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 85% | 12 min | 2.2% | 226 |
| Delta Air Lines | 79% | 18 min | 1.5% | 2,894 |
| Frontier Airlines | 76% | 15 min | 0.9% | 318 |
| JetBlue Airways | 75% | 17 min | 1.8% | 2,470 |
Monthly on-time trend
Best time to fly from BOS to RDU
Aim for departures around 6 a.m. (90% on-time); avoid 9 p.m. departures (57%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 19 min |
| Tuesdaybest | 83% | 12 min |
| Wednesday | 82% | 11 min |
| Thursday | 76% | 19 min |
| Friday | 75% | 20 min |
| Saturday | 79% | 16 min |
| Sunday | 73% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft45%
- Airline operations39%
- National airspace system13%
- Weather3%
Frequently asked questions
- How often are flights from BOS to RDU delayed?
- 23% of BOS–RDU flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 17 minutes.
- Which airline is most reliable from BOS to RDU?
- Republic Airways has the best on-time record on this route at 85%, based on 226 flights. 4 airlines flew BOS–RDU frequently enough to compare in this period.
- What is the best time of day to fly from BOS to RDU?
- Departures around 6 a.m. have the best record (90% on-time), while departures around 9 p.m. have the worst (57%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BOS to RDU?
- The scheduled BOS–RDU flight time averages 2h 11m over 612 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are BOS to RDU flights cancelled?
- 1.6% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from BOS to RDU?
- August 2024 was the roughest month in this dataset, with only 70% of arrivals on time. The best was November 2024 at 90%. If your dates are flexible, that 20-point gap is worth planning around.
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Based on 5,908 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.