Route · BWI → BUF · 2020–2025 BTS data
Baltimore to Buffalo
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BWI to BUF (Baltimore to Buffalo) ranks #1270 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 74.6%
- On-time
- -4.4 pts
- vs US avg
- 55 min
- Delay when late
- 9,340
- Flights
- #1270 of 4927
- Corpus placement
Cancelled
1.3%
Best Month
Sep 2025 87%
Worst Month
Jul 2024 50%
Distance
281 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 152 | 46 | 6 | 1 | WN |
| Nov 2025 | 144 | 22 | 2 | 0 | WN |
| Oct 2025 | 149 | 29 | 0 | 0 | WN |
| Sep 2025 | 147 | 19 | 0 | 0 | WN |
| Aug 2025 | 148 | 26 | 0 | 1 | WN |
| Jul 2025 | 145 | 53 | 8 | 0 | WN |
| Jun 2025 | 141 | 49 | 1 | 0 | WN |
| May 2025 | 146 | 42 | 0 | 0 | WN |
| Apr 2025 | 141 | 30 | 0 | 0 | WN |
| Mar 2025 | 138 | 30 | 2 | 0 | WN |
| Feb 2025 | 112 | 24 | 2 | 0 | WN |
| Jan 2025 | 124 | 31 | 5 | 0 | WN |
| Dec 2024 | 141 | 22 | 0 | 0 | WN |
| Nov 2024 | 140 | 25 | 0 | 0 | WN |
| Oct 2024 | 146 | 33 | 2 | 0 | WN |
| Sep 2024 | 148 | 27 | 0 | 0 | WN |
| Aug 2024 | 148 | 58 | 0 | 1 | WN |
| Jul 2024 | 141 | 70 | 0 | 0 | WN |
| Jun 2024 | 135 | 59 | 1 | 0 | WN |
| May 2024 | 147 | 53 | 0 | 0 | WN |
| Apr 2024 | 142 | 39 | 0 | 0 | WN |
| Mar 2024 | 142 | 43 | 0 | 1 | WN |
| Feb 2024 | 119 | 32 | 0 | 0 | WN |
| Jan 2024 | 142 | 42 | 15 | 1 | WN |
BWI–BUF seasonal on-time pattern
Best: November (84.1%) · weakest: July (63.7%)
Strongest calendar month
November
84.1% on-time · ~128 flights/mo
Busiest calendar month
August
~146 flights/mo avg
Weakest calendar month
July
63.7% on-time · ~142 flights/mo
Cancellation Rate
1.3%
44 of 3,378 flights
Diversion Rate
0.1%
5 of 3,378 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
BWI on-time profileBUF - Buffalo
Full on-time, delay-cause, and seasonal performance for Buffalo, NY.
BUF on-time profileCompare the two airports
See BWI and BUF side by side on delays, cancellations, and reliability.
Compare BWI vs BUFOrigin-hub reliability standing
Softer reliability from BWI
Among 64 routes leaving BWI, only 11 (including this one) clear below 75% on-time, while 0 stay ≥85% and 53 sit mid-band. Travelers comparing BWI options should weigh this 74.6% print against those peers · fleet on-time rank #4525 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to BWI–BUF.
Routes with a similar on-time rate
What the Data Says About BWI to BUF
On-time performance on the BWI to BUF pairing (Baltimore to Buffalo) trails a chunk of the network: 74.6% of 9,340 tracked flights arrived on schedule, with a 55.2-minute average delay on the ones that ran late. The route spans about 281 miles across 1 carrier. Cancellations over the trailing 24 months hit 1.3% (44 of 3,378 flights), with 0.1% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 87% on-time, while Jul 2024 came in at just 50% - a 37-point swing worth factoring into travel timing.
On the multi-year calendar, BWI–BUF peaks in November at 84.1% on-time while August carries the heaviest traffic (~146 flights per month) ; the softest month is July at 63.7%, a 20.4-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does BWI to BUF rank among US routes by traffic? ▼
How often are flights delayed from BWI to BUF? ▼
What is the cancellation rate for BWI to BUF? ▼
How far is the flight from BWI to BUF? ▼
When is the best time to fly from BWI to BUF? ▼
Airports on this route
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.
Using BWI–BUF data
BWI–BUF sits 4.4 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare BWI and BUF airport profiles: delay causes and top routes differ even on the same corridor. BWI airport
- If your dates flex, November (84.1% on-time) beats July (63.7%) on this corridor. Seasonal chart
- 4 other routes post a similar 74.6% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.