Carrier route record
AASNA→ORD
American Airlines · Santa Ana to Chicago
- Flights
- 1,172
- Period
- July 2025 to June 2026
- Share of route
- 53%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with American Airlines.
American on SNA to ORD sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 1,172 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate American on SNA to ORD from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
74.6%
Arrivals under 15 minutes late, of 1,132 completed flights
Avg delay
85 min
Across delayed arrivals only, not all flights
Cancelled
1.79%
National rate is 1.81%
Whole route
76.7%
Every carrier on SNA to ORD, 2,212 flights
These figures cover 1,172 flights between July 2025 and June 2026. Beyond the headline rate, 10.2% 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 SNA to ORD
American flew 1,172 of the 2,212 flights on SNA to ORD, most of the route. Its 74.6% on time is 2 points worse than the route as a whole, which runs 76.7%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 79.0% to American at 74.6%.
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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines | 1,040 | 79.0% | 62 min | 0.58% | B+ |
| American Airlines (this page) | 1,172 | 74.6% | 85 min | 1.79% | C |
Flight by flight
American flight numbers on SNA to ORD
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 24 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–8am169 flights89.2%
- 8am–11am293 flights83.3%
- 11am–2pm364 flights69.8%
- 2pm–5pm346 flights65.0%
- 5pm–8pm—
- 8pm–5am—
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 89.2% of the time, against 65.0% for the afternoon window. That is 24 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 364 flights scheduled in it.
Across the year
American on SNA to ORD through the year
August is the worst month at 63.1% on time, 17 points below September, the best at 80.6%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. October was the busiest month here, with 119 flights.
Across the week, Tuesday is the strongest day at 84.0% on time and Sunday the weakest at 62.4%. 22 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 44% of the 25,000 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.
- 44%Late-arriving aircraft
- 32%Carrier
- 17%National Airspace System
- 7%Extreme weather
44% 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 25,000 reported delay minutes here, that single category outweighs weather by 6 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 24,515 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 89.2% on time here.
Cancellations sit at 1.79% against a national 1.81%, which is ordinary. Diversions add another 1.62%.
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. 10.2% 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 1,726 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg runs 75.4% on time across 1,172 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,172 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking American on SNA to ORD
Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 80.6% on time and August 63.1%, a swing of 17 points. If the dates move at all, move them out of August before you think about anything else. 1,132 completed flights over 12 months sit behind that.
Related
Where to go next
- SNA to ORD, every carrier
- American on ORD to SNA, the return leg
- United Airlines on SNA to ORD79.0%
- American Airlines network-wide record
- John Wayne Airport (SNA) delay statistics
- Chicago O'Hare International (ORD) delay statistics
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
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.