Route
MIA → BUF
Miami International Airport Buffalo Niagara International Airport
1,185 miles
Return route BUF → MIA →
How punctual is this route?
- On-time arrivals
- 40.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 162 min
- Flights arriving 15+ minutes late
- Flights tracked
- 25
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 66%
- Late-arriving aircraft 27%
- Air traffic control & airport 7%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Nov 2025
Apr 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| November 2025 | 71.4% | 7 |
| December 2025 | 0.0% | 4 |
| January 2026 | 20.0% | 5 |
| February 2026 | 50.0% | 4 |
| March 2026 | 50.0% | 4 |
| April 2026 | 0.0% | 1 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Republic Airways | 22 | 36.4% | 0.0% | 169 min |
| American Airlines | 2 | 50.0% | 0.0% | 64 min |
| Delta Air Lines | 1 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
YX4750
64% late · 22 flights
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