Carrier route record

AAPHL→BTV

American Airlines · Philadelphia to Burlington

Flights: 220
Period: July 2025 to June 2026
Share of route: 20%
Carriers: 3

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with American Airlines.

American on PHL to BTV lands a B+, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 220 flights, with a median arrival 6 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate American on PHL to BTV from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

76.5%

Arrivals under 15 minutes late, of 217 completed flights

Avg delay

82 min

Across delayed arrivals only, not all flights

Cancelled

0.91%

National rate is 1.81%

Whole route

78.5%

Every carrier on PHL to BTV, 1,098 flights

These figures cover 220 flights between July 2025 and June 2026. Beyond the headline rate, 9.2% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Carrier by carrier

American against every carrier on PHL to BTV

American flew 220 of the 1,098 flights on PHL to BTV, about 20% of it. Its 76.5% on time is 2 points worse than the route as a whole, which runs 78.5%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Republic at 83.4% to American at 76.5%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on PHL to BTV
Airline	Flights	On time	Avg delay	Cancelled	Grade
Republic Airwaysthin sample	162	83.4%	80 min	1.23%	B
PSA Airlines	716	77.9%	95 min	5.73%	B−
American Airlines (this page)thin sample	220	76.5%	82 min	0.91%	B+

Departure window

When American runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 27 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am—
8am–11am67 flights86.6%
11am–2pm—
2pm–5pm72 flights59.7%
5pm–8pm16 flights—
8pm–5am65 flights85.5%

Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 86.6% of the time, against 59.7% for the afternoon window. That is 27 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 72 flights scheduled in it.

Across the year

American on PHL to BTV through the year

Jul–Sep 2025133 flights75.8%
Oct–Dec 202558 flights73.2%
Apr–Jun 202629 flights—

Scale runs 65% to 80%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 76.5% on time across 220 flights.

Split by quarter, American on PHL to BTV logged 133 flights in Jul–Sep 2025, 58 flights in Oct–Dec 2025 and 29 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 76.5% annual figure is the one to use.

Across the week, Friday is the strongest day at 88.2% on time and Sunday the weakest at 68.6%. 20 points is a smaller lever than departure hour, but it is free.

Delay causes

Why American runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 53% of the 4,193 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
53%
Carrier
37%
National Airspace System
10%

53% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 4,193 reported delay minutes here, that single category outweighs weather by 53 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 4,193 reported delay minutes.

The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,537 of the 4,193 delay minutes reported here.

Cancellations sit at 0.91% against a national 1.81%, which is ordinary. Diversions add another 0.45%.

Connections and stage length

What a delay here costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.2% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

At 335 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.

The return leg is a different operation and performs like one: it runs 69.4% on time across 221 flights, 7 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 7 points of difference.

One caution: this is a thin sample. 220 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking American on PHL to BTV

Put together: treat all of this as provisional. 220 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 76.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 217 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures