Newark (EWR) to Buffalo (BUF): On-Time Performance
Data through July 2026
The biggest risk when flying EWR to BUF isn't a late arrival — it's not departing at all. 4.8% of scheduled flights on this route were cancelled, several times the typical US rate. When flights do go, 76% land on time, below the national average of 78%. Republic Airways has been the safer pick, arriving on time 87% of the time.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 4.8%
- Flights/day
- 1.3
- last 12 months
- Duration
- 1h 31m
- scheduled
- Distance
- 282 mi
Best airline from EWR to BUF
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 87% | 9 min | 5.7% | 771 |
| United Airlines | 55% | 34 min | 3.1% | 392 |
Monthly on-time trend
Best time to fly from EWR to BUF
Aim for departures around 2 p.m. (97% on-time); avoid 10 p.m. departures (57%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 70% | 23 min |
| Tuesday | 79% | 14 min |
| Wednesday | 77% | 20 min |
| Thursday | 76% | 21 min |
| Fridaybest | 79% | 11 min |
| Saturday | 75% | 13 min |
| Sunday | 74% | 20 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft58%
- Airline operations20%
- National airspace system17%
- Weather4%
Frequently asked questions
- How often are flights from EWR to BUF delayed?
- 24% of EWR–BUF flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 18 minutes.
- Which airline is most reliable from EWR to BUF?
- Republic Airways has the best on-time record on this route at 87%, based on 771 flights. 2 airlines flew EWR–BUF frequently enough to compare in this period.
- What is the best time of day to fly from EWR to BUF?
- Departures around 2 p.m. have the best record (97% on-time), while departures around 10 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 EWR to BUF?
- The scheduled EWR–BUF flight time averages 1h 31m over 282 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are EWR to BUF flights cancelled?
- 4.8% of scheduled flights on this route were cancelled between 2024-07 and 2026-07 — several times the typical US rate, so consider earlier departures or backup options.
- What is the worst month to fly from EWR to BUF?
- May 2025 was the roughest month in this dataset, with only 54% of arrivals on time. The best was May 2026 at 93%. If your dates are flexible, that 39-point gap is worth planning around.
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Based on 1,163 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.