ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
EWR → BUF
Newark to Buffalo: 398 nonstop flights a year
On time (12 months)
77%
Cancelled
3.8%
avg delay 18 min
Best time to leave
Before 9 AM
100% on time vs 71% after 9 PM
Most reliable airline
Republic
79% chance on time
Lowest nonstop fare seen in the next two months: $168 (United 3529 on 2026-11-11). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
5 nonstop. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.
Best overall#1 · Nonstop · 1h 41m
8:50 PM → 10:31 PM
83%
arrive on time
86% on time · 3.5% cancel8:50 PM EWR → 10:31 PM BUF1h 41m
Republic 3476 · sold as American Eagle, Delta Connection or United Express
Embraer E175 · 1–11 yrs oldFind 8:50 PM flight fares Opens this date on Aviasales#2 · Nonstop · 1h 30m
4:40 PM → 6:10 PM
82%
arrive on time
86% on time · 4.4% cancel4:40 PM EWR → 6:10 PM BUF1h 30m
Republic 3607 · sold as American Eagle, Delta Connection or United Express
Embraer E175 · 3–11 yrs oldFind 4:40 PM flight fares Opens this date on Aviasales#3 · Nonstop · 1h 34m
8:16 AM → 9:50 AM
81%
arrive on time
83% on time · 2.4% cancel8:16 AM EWR → 9:50 AM BUF1h 34m
Republic 3529 · sold as American Eagle, Delta Connection or United Express
Embraer E175 · 2–11 yrs oldFind 8:16 AM flight fares Opens this date on Aviasales#4 · Nonstop · 1h 34m
9:59 PM → 11:33 PM
79%
arrive on time
82% on time · 3.2% cancel9:59 PM EWR → 11:33 PM BUF1h 34m
Republic 3537 · sold as American Eagle, Delta Connection or United Express
Embraer E175 · 1–11 yrs oldFind 9:59 PM flight fares Opens this date on Aviasales#5 · Nonstop · 1h 36m
10:20 PM → 11:56 PM
79%
arrive on time
82% on time · 3.7% cancel10:20 PM EWR → 11:56 PM BUF1h 36m
Republic 3404 · sold as American Eagle, Delta Connection or United Express
Embraer E175 · 1–10 yrs oldFind 10:20 PM flight fares Opens this date on Aviasales
Aircraft and ages come from the planes each flight number actually flew in the last 3 months of data (FAA registry build years); airlines can swap planes.
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Republic Airways (sold as American Eagle, Delta Connection or United Express)79%
276 flights · 85% on time as flown · 3.7% cancel
- United Airlines65%
122 flights · 58% on time as flown · 3.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM100%
31 flights · avg delay 0 min
- 9 AM to noon74%
74 flights · avg delay 20 min
- 3 to 6 PM91%
49 flights · avg delay 3 min
- After 9 PM71%
227 flights · avg delay 24 min
Best day: Saturday (81%). Worst: Monday (73%).
Smarter routing
Nearby airports that run more on time
EWR → ROC 81% chance on time
Newark Liberty International Airport to Frederick Douglass Greater Rochester International Airport · 633 flights a year · 55 mi from your airports · yours: 74%
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure