Route profile
BUF→EWR
Flight reliability, delays and best times to fly from Buffalo to Newark, 282 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 44% of comparable major US routes (4,598 compared)
Calculated from 2,041 flights. How this is calculated · What counts as on time
BUF → EWR arrives on time 87.8% of the time; the return trip, EWR → BUF, arrives on time 79.0% of the time, an 8.8-point gap between the two directions of the same city pair.
BUF → EWR spends 27.1 minutes on the ground on a 282-mile trip: 15.9 minutes from pushback to wheels-up at BUF and 11.3 minutes from touchdown to gate at EWR.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What sets this route apart
Where BUF to EWR differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
BUF to EWR is at its best against routes of similar length for flights scheduled at 5 PM: 81.0% arrive on time, 9.9 points ahead of the 71.1% those routes manage at that hour. Against all other routes the gap is 11.2 points.
BUF to EWR holds up on Fridays better than routes of similar length do: 87.2% on time to their 76.7%, a 10.5 points lead. Against all other routes the gap is 11 points.
March is kinder to BUF to EWR than to routes of similar length: 93.0% on time against 79.6%, 13.4 points better. Against all other routes the gap is 15.1 points.
United Airlines does better on BUF to EWR than on its routes of similar length: 90.8% on time here, 79.4% there, 11.4 points apart. Against all other routes the gap is 10.9 points.
BUF to EWR against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 5 PM departures | 81.0% | routes of similar length | 71.1% | +9.9 pts | 200 here, 44,293 there |
| Weekday: Friday | 87.2% | routes of similar length | 76.7% | +10.5 pts | 290 here, 102,462 there |
| Month: March | 93.0% | routes of similar length | 79.6% | +13.4 pts | 142 here, 54,718 there |
| Airline: United Airlines | 90.8% | routes of similar length | 79.4% | +11.4 pts | 725 here, 49,385 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 282 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
Why BUF → EWR flights are cancelled
July 2023 – July 2026
BUF → EWR cancelled 96 of 2,041 scheduled flights — about 1 in every 21. The reason filed most often was extreme weather, 60.4% of the cancellations coded on this route — about 1 in every 35 scheduled flights.
Share of cancellations
Of 96 cancelled departures carrying a reason code.
What each reason means
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
58 cancellations, 60.4% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
29 cancellations, 30.2% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
9 cancellations, 9.4% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. With only one or two carriers on the route, the split mostly reflects how they file. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
96 coded cancellations were recorded on BUF → EWR; the section appears from 50.
When it goes wrong
July 2023 – July 2026
21 min late
against a median of 15 min early
Percentiles over 2,041 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at EWR after arriving from BUF.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 22% | High risk |
| 45 min | 12% | Some risk |
| 60 min | 8.4% | Some risk |
| 90 min | 5.4% | Some risk |
| 120 min | 3.7% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 4.70% of the time and diverts 0.15% of the time, which a late arrival never shows up in.
Chance of missing is the share of 1,942 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 21 minutes late (90th-percentile gate arrival delay), over 2,041 operations.
Any other layover length: connection checker.
Best time to fly
BUF → EWR flights departing 9 AM–12 PM arrived on time 91.8% of the time, against 75.3% for 6–9 PM departures, a gap of 16.5 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 90.8% on time from 962 flights
- 7 AM to 10 AM: too few flights to score
- 11 AM: 90.7% on time from 255 flights
- 12 PM to 4 PM: too few flights to score
- 5 PM: 81.0% on time from 219 flights
- 6 PM: too few flights to score
- 7 PM: 70.3% on time from 206 flights
- 8 PM to 11 PM: too few flights to score
Why BUF → EWR runs late
July 2023 – July 2026
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for BUF → EWR. Only delays of 15 minutes or more are attributed. What the five causes mean
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| Republic Airways | 1,294 | 86.0% | 5.80% | -15 min | 6.4% |
| United Airlines | 747 | 90.8% | 2.81% | -15 min | 3.9% |
Republic Airways flew 63.4% of the 2,041 flights listed. Republic Airways cancelled 5.80% of its flights here against 2.81% for United Airlines.
United Airlines arrived on time 4.8 percentage points more often than Republic Airways on this route.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Sunday the least, a gap of 8.0 percentage points.
By month
- Jan to Feb: no data
- Mar: 93.0%
- Apr: 87.0%
- May: 89.1%
- Jun: 83.2%
- Jul: 80.9%
- Aug: 91.4%
- Sep: 87.1%
- Oct: 89.0%
- Nov: 90.6%
- Dec: 84.2%
July is historically the weakest month and March the strongest, a spread of 12.1 percentage points.
Reliability over time
July 2023 – July 2026
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 87.7% against 89.6% in the 12 months before — declining by 1.9 percentage points.
Data and methodology
Calculated by FlyerIntel from 2,041 BUF → EWR flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed