BUF to RDU flight delays & on-time performance
Nonstop flights from Buffalo Niagara International Airport to Raleigh-Durham International Airport · 487 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BUF or RDU right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Buffalo (BUF) to Raleigh/Durham (RDU) arrived on time 68% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 9% arrived an hour or more late.
- Frontier Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 6pm did best (80% on time); around 7pm did worst (52%).
- Thursday was the most reliable day to fly (79% on time) and Tuesday the least (30%).
- The largest source of delay minutes was late-arriving aircraft (72%).
Which airline is most on time from BUF to RDU?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Frontier Airlines | 68% | 0.0% | 20 min | 9.4% | 106 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 9am83%12 flights
- 5pm54%13 flights
- 6pm80%20 flights
- 7pm52%29 flights
- 8pm83%12 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday75%0.0% cancelled
- Tuesday30%0.0% cancelled
- Wednesday100%0.0% cancelled
- Thursday79%0.0% cancelled
- Friday60%0.0% cancelled
- Saturday69%0.0% cancelled
- Sunday67%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft72%
- Air traffic control & airport congestion20%
- Airline (crew, maintenance, cleaning, fueling)7%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
BUF to RDU: common questions
- How often are BUF to RDU flights on time?
- 68% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Buffalo to Raleigh/Durham cancelled?
- 0.0% of scheduled flights were cancelled (0 of 106).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 60 min behind schedule on average, and 9.4% of flights were an hour or more late.
- How long is taxi time at BUF?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: RDU to BUF — 71% on time
More flights from Buffalo
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BUF → RDU, nonstop flights by US airlines that report to the DOT. How we calculate this.