Route
ORD → BUF
Chicago O'Hare International Airport Buffalo Niagara International Airport
How punctual is this route?
- On-time arrivals
- 70.4%
- Less than 15 minutes late
- Cancelled
- 3.2%
- Of scheduled flights
- Average delay when late
- 83 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,204
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 50%
- Airline (crew, maintenance, cleaning) 26%
- Air traffic control & airport 17%
- Extreme weather 8%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 78.1% | 179 |
| October 2025 | 76.1% | 181 |
| November 2025 | 74.0% | 189 |
| December 2025 | 66.9% | 165 |
| January 2026 | 71.0% | 164 |
| February 2026 | 71.8% | 127 |
| March 2026 | 62.6% | 182 |
| April 2026 | 68.7% | 185 |
| May 2026 | 71.8% | 217 |
| June 2026 | 71.4% | 209 |
| July 2026 | 65.7% | 217 |
| August 2026 | 66.8% | 189 |
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 |
|---|---|---|---|---|
| United Airlines | 588 | 75.7% | 1.0% | 83 min |
| American Airlines | 478 | 59.1% | 2.7% | 92 min |
| Republic Airways | 428 | 74.4% | 4.7% | 75 min |
| SkyWest Airlines | 390 | 64.3% | 5.6% | 84 min |
| Envoy Air | 320 | 79.4% | 2.8% | 66 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1335
33% late · 182 flights
-
AA564
45% late · 137 flights
-
UA2226
22% late · 119 flights
-
MQ3344
16% late · 80 flights
-
AA403
65% late · 76 flights
-
MQ3382
25% late · 75 flights
-
YX4413
5% late · 75 flights
-
OO4913
35% late · 73 flights
-
MQ3342
16% late · 52 flights
-
YX4349
28% late · 50 flights
-
UA2753
17% late · 47 flights
-
AA1073
47% late · 45 flights
-
AA2182
16% late · 44 flights
-
AA2957
23% late · 44 flights
-
AA3225
52% late · 44 flights
-
YX4423
14% late · 44 flights
-
OO5763
47% late · 40 flights
-
UA1946
36% late · 37 flights
-
YX4402
40% late · 37 flights
-
OO5427
27% late · 36 flights
-
MQ3691
27% late · 35 flights
-
OO5690
20% late · 35 flights
-
OO5941
32% late · 35 flights
-
AA1414
12% late · 33 flights
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