Route · BUF → DEN · 2020–2025 BTS data
Buffalo to Denver
The BUF–DEN corridor (Buffalo, NY → Denver, CO) runs ahead of the national average, served by 6 carriers across roughly 1,359 miles.
Data updated 2026-06-13
- 81.7%
- On-time
- +2.7 pts
- vs US avg
- 59 min
- Delay when late
- 2,224
- Flights
Cancelled
1.8%
Best Month
Jun 2025 91%
Worst Month
Aug 2024 72%
Distance
1,359 mi
Carriers
6
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Nov 2025 | 52 | 11 | 0 | 0 | UA,WN |
| Oct 2025 | 70 | 9 | 0 | 0 | UA,WN,F9 |
| Sep 2025 | 77 | 19 | 0 | 0 | UA,WN,F9 |
| Aug 2025 | 81 | 15 | 0 | 0 | WN,F9,UA |
| Jul 2025 | 83 | 15 | 0 | 0 | UA,WN,F9 |
| Jun 2025 | 79 | 7 | 1 | 1 | UA,WN,F9 |
| May 2025 | 44 | 12 | 0 | 0 | UA,WN,F9 |
| Apr 2025 | 30 | 9 | 0 | 0 | WN |
| Oct 2024 | 39 | 4 | 0 | 0 | WN,F9 |
| Sep 2024 | 44 | 3 | 0 | 0 | WN,F9 |
| Aug 2024 | 54 | 15 | 0 | 0 | F9,WN |
| Jul 2024 | 48 | 9 | 1 | 0 | F9,WN |
| Jun 2024 | 46 | 14 | 0 | 0 | F9,WN |
| May 2024 | 49 | 19 | 1 | 0 | F9,WN |
| Apr 2024 | 42 | 15 | 0 | 0 | F9,WN |
| Mar 2024 | 31 | 6 | 0 | 0 | WN |
| Jan 2024 | 31 | 5 | 6 | 0 | WN |
| Dec 2023 | 31 | 1 | 0 | 0 | WN |
| Nov 2023 | 30 | 3 | 0 | 0 | WN |
| Oct 2023 | 31 | 5 | 0 | 0 | WN |
| Sep 2023 | 32 | 1 | 0 | 0 | F9,WN |
| Aug 2023 | 47 | 12 | 1 | 1 | F9,WN |
| Jul 2023 | 37 | 14 | 0 | 0 | F9,WN |
| Dec 2022 | 45 | 9 | 11 | 0 | WN,F9 |
Cancellation Rate
1.8%
21 of 1,153 flights
Diversion Rate
0.2%
2 of 1,153 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BUF - Buffalo
Full on-time, delay-cause, and seasonal performance for Buffalo, NY.
Origin airport →DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Destination airport →Compare the two airports
See BUF and DEN side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to BUF–DEN.
Routes with a similar on-time rate
What the Data Says About BUF to DEN
2,224 tracked flights put the BUF to DEN pairing (Buffalo to Denver) at a 81.7% on-time rate, squarely in line with the wider network. Delays that do occur run 58.5 minutes on average. Across the 1,359-mile route and its 6 carriers, the trailing 24 months show 1.8% cancelled and 0.2% diverted (1,153 flights sampled).
The monthly split is wide on this route: Jun 2025 posted the strongest performance at 91% on-time, while Aug 2024 came in at just 72% - a 19-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.