Airports › Vermont
Airport · 12 months to July 2026
Patrick Leahy Burlington International: delays and on-time record
Burlington, Vermont
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report. Data through July 2026; this is a monthly history, not live airport status.
Reporting carriers scheduled 6,084 domestic departures from Patrick Leahy Burlington International (BTV), Burlington, in the 12 months to July 2026: about 17 a day to 12 destinations.
76.9% of those flights left the gate less than 15 minutes late, 0.8 points above the national departure figure of 76.1%. Flights arriving at BTV were on time 71.9% of the time, 4.1 points below the national arrival figure of 76.0%.
2.9% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 24.0 min.
PSA Airlines is the largest reporting carrier at BTV with 37% of departures. Among carriers with at least 120 departures, Delta Air Lines had the highest on-time arrival share for its BTV departures (82.6%) and SkyWest Airlines the lowest (64.5%).
On-time departures are down 3.6 points on the previous 12 months (80.5%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving BTV, air carrier 40%, late-arriving aircraft 30% and national aviation system 21%.
- On time 71.8%
- Arrived 15+ minutes late 25.0%
- Cancelled 2.9%
- Diverted 0.3%
As origin and as destination, against the nation
| Measure | Departures from BTV | Arrivals at BTV | All reported flights | BTV departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 76.9% | 74.5% | 76.1% | 80.5% |
| Arrived on time | 71.8% | 71.9% | 76.0% | 75.9% |
| Cancelled | 2.9% | 2.9% | 1.8% | 2.8% |
| Diverted | 0.3% | 0.4% | 0.3% | 0.3% |
| Average departure delay (late minutes only) | 24.0 min | 19.9 min | 17.4 min | 19.3 min |
| Arrival delay minutes per 100 flights | 2,541 | 2,005 | 1,684 | 2,065 |
| Scheduled flights | 6,084 | 6,084 | 7,043,858 | 7,931 |
12 months to July 2026. The first column follows flights that left BTV; the second follows flights that landed there. Year on year, on-time departures moved −3.6 pts.
Airlines at BTV
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| OH PSA Airlines | 2,249 | 37% | 69.8% | 19.2 min | 4.2% |
| YX Republic Airline | 1,095 | 18% | 81.2% | 1.4 min | 2.7% |
| UA United Airlines | 1,005 | 17% | 70.0% | 19.1 min | 1.0% |
| OO SkyWest Airlines | 819 | 13% | 64.5% | 29.0 min | 2.9% |
| AA American Airlines | 440 | 7% | 67.3% | 18.0 min | 1.6% |
| DL Delta Air Lines | 397 | 7% | 82.6% | 1.2 min | 2.3% |
| MQ Envoy Air | 66 | 1% | 63.6% | 16.2 min | 1.5% |
Departures from BTV by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 71.8%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from BTV
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| BTV–ORD | Burlington to Chicago | 1,248 | 66.7% | 24.7 min | 1.9% |
| BTV–DCA | Burlington to Washington | 1,143 | 62.6% | 30.1 min | 4.3% |
| BTV–PHL | Burlington to Philadelphia | 1,117 | 73.4% | 10.6 min | 4.1% |
| BTV–CLT | Burlington to Charlotte | 644 | 77.6% | 9.7 min | 2.5% |
| BTV–EWR | Burlington to Newark | 592 | 78.7% | -1.4 min | 3.2% |
| BTV–ATL | Burlington to Atlanta | 391 | 82.4% | 1.6 min | 2.3% |
| BTV–DTW | Burlington to Detroit | 338 | 67.8% | 23.7 min | 2.4% |
| BTV–IAD | Burlington to Washington | 313 | 87.5% | 1.2 min | 1.0% |
| BTV–DEN | Burlington to Denver | 219 | 64.4% | 26.0 min | 0.0% |
| BTV–LGA | Burlington to New York | 62 | 83.9% | 3.0 min | 3.2% |
The 10 busiest of 12 routes with reported flights. Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 122 departures, 10 am to 11 am had the highest on-time share (88.5% of 374 flights) and 5 pm to 6 pm the lowest (60.8% of 566).
Delay causes
Cancellations by reported reason (176 in the period): air carrier 10%, weather 78%, national aviation system 12%, security 0%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for BTV on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave BTV on time?
76.9% of the 6,084 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 2.9% were cancelled.
How often do flights arrive at BTV on time?
71.9% of 6,084 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at BTV?
Counting departures from BTV and whether they reached their destination on time, Delta Air Lines had the highest share (82.6% of 397 flights), then Republic Airline (81.2%) and United Airlines (70.0%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at BTV?
For departures from BTV that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: air carrier 40%, late-arriving aircraft 30%, national aviation system 21%, extreme weather 9%, security 0%.
What time of day has the highest on-time share at BTV?
Departures scheduled from 10 am to 11 am local time left on time 88.5% of the time, the highest of any hour with enough flights to compare; 5 pm to 6 pm was lowest at 60.8%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 76.9%, down 3.6 points on the previous 12 months (80.5%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at BTV?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.