Carrier route record

AABGR→ORD

American Airlines · Bangor to Chicago

Flights: 257
Period: September 2025 to August 2026
Share of route: 36%
Carriers: 5

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

American on BGR to ORD sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.3%. The late ones land about 2.6 hours behind schedule. That rests on 257 flights, with a median arrival 8 minutes early.

The national on-time rate over the same period is 77.3%, so American on BGR to ORD runs 5 points behind the country as a whole. Across a thousand flights that is about 52 extra late arrivals.

On time

72.1%

Arrivals under 15 minutes late, of 251 completed flights

Avg delay

157 min

Across delayed arrivals only, not all flights

Cancelled

1.95%

National rate is 1.89%

Whole route

74.6%

Every carrier on BGR to ORD, 712 flights

These figures cover 257 flights between September 2025 and August 2026. Beyond the headline rate, 14.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Carrier by carrier

American against every carrier on BGR to ORD

American flew 257 of the 712 flights on BGR to ORD, about 36% of it. Its 72.1% on time is 3 points worse than the route as a whole, which runs 74.6%. Ranked by on-time rate it is number four of five carriers on the route, where the range runs from Envoy at 90.0% to United at 30.0%. Four 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 BGR to ORD
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Airthin sample	80	90.0%	64 min	0.00%	A+
Republic Airwaysthin sample	170	75.6%	67 min	1.18%	B
SkyWest Airlinesthin sample	195	73.0%	93 min	2.56%	C
American Airlines (this page)thin sample	257	72.1%	157 min	1.95%	C
United Airlinesthin sample	10	30.0%	103 min	0.00%	F+

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

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 28 points, against half a point between the best and worst carrier.

5am–8am87 flights86.2%
8am–11am—
11am–2pm103 flights68.7%
2pm–5pm—
5pm–8pm67 flights58.5%
8pm–5am—

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

The 5pm–8pm window is where this operation falls apart: 58.5% on time, against 86.2% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 11am–2pm window is the busiest, with 103 flights scheduled in it.

Across the year

American on BGR to ORD through the year

Jul–Sep 202530 flights46.7%
Oct–Dec 202510 flights—
Apr–Jun 2026122 flights80.7%
Jul–Sep 202695 flights69.6%

Scale runs 40% to 85%. 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 72.1% on time across 257 flights.

American on BGR to ORD did not run the same all year. Its best quarter was Apr–Jun 2026 at 80.7% on time and its weakest Jul–Sep 2025 at 46.7%, a swing of 34 points on roughly 86 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Across the week, Thursday is the strongest day at 83.3% on time and Monday the weakest at 62.9%, a spread of 20 points.

Arrival by arrival

How late American on BGR to ORD runs when it is late

American on BGR to ORD often beats the schedule: 93 of 251 completed flights, 37%, arrived 15 minutes or more early. When American on BGR to ORD is late it tends to be very late: 36 of its 70 late arrivals were an hour or more behind, and 17 were two hours or more.

15+ min early93 flights37.1%
Within 15 min88 flights35.1%
15–29 min late18 flights7.2%
30–59 min late16 flights6.4%
1–2 hours late19 flights7.6%
2+ hours late17 flights6.8%

Scale runs 0% to 100%.

Share of 251 completed flights by arrival against schedule.

Time lost at the gate mostly stays lost. Of 58 departures that left 15 minutes late or more, only 5 made it up before arrival. In the other direction, 17 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at ORD.

The worst days

Worst days for American on BGR to ORD

The latest arrival of the period was on 12 July 2026, 57 hours 5 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in July 2026.

The latest arrivals of American on BGR to ORD in the period
Date	Arrived late by	Largest filed cause
12 July 2026	57 hours 5 minutes	Carrier
22 September 2025	17 hours 17 minutes	Late-arriving aircraft
10 July 2026	10 hours 20 minutes	Late-arriving aircraft
17 June 2026	8 hours 38 minutes	Extreme weather
18 July 2026	6 hours 26 minutes	Late-arriving aircraft

Delay causes

Why American runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 11,000 reported delay minutes.

Carrier
39%
Late-arriving aircraft
39%
National Airspace System
19%
Extreme weather
4%

39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 11,000 reported delay minutes here, that single category outweighs weather by 9 to one. The split is drawn from 10,967 reported delay minutes.

The largest share of delay minutes, 39%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,251 of the 11,000 delay minutes reported here.

Cancellations sit at 1.95% against a national 1.89%, which is ordinary. Diversions add another 0.39%.

Connections and stage length

What a delay here costs

14.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.

The 978 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.

One caution: this is a thin sample. 257 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 BGR to ORD

Put together: treat all of this as provisional. 257 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 72.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 251 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures