Route · ORD → SJC · 2020–2025 BTS data
Chicago to San Jose
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ORD to SJC (Chicago to San Jose) ranks #4405 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 77.1%
- On-time
- -1.9 pts
- vs US avg
- 77 min
- Delay when late
- 1,131
- Flights
- #4405 of 4927
- Corpus placement
Cancelled
0.8%
Best Month
N/A
Worst Month
N/A
Distance
1,829 mi
Carriers
2
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Nov 2025 | 30 | 10 | 0 | 0 | UA |
| Oct 2025 | 31 | 12 | 0 | 0 | UA |
| Sep 2025 | 30 | 3 | 0 | 0 | UA |
| Aug 2025 | 31 | 11 | 1 | 0 | UA |
| Jul 2025 | 31 | 14 | 2 | 0 | UA |
| Jun 2025 | 30 | 20 | 0 | 0 | UA |
| May 2025 | 31 | 10 | 0 | 0 | UA |
| Apr 2025 | 30 | 5 | 0 | 0 | UA |
| Mar 2025 | 31 | 5 | 1 | 0 | UA |
| Jan 2025 | 30 | 7 | 0 | 1 | UA |
| Nov 2024 | 30 | 6 | 0 | 0 | UA |
| Oct 2024 | 31 | 3 | 0 | 0 | UA |
| Sep 2024 | 30 | 2 | 0 | 1 | UA |
| Aug 2024 | 34 | 11 | 0 | 0 | UA |
| Jul 2024 | 31 | 11 | 1 | 0 | UA |
| Jun 2024 | 48 | 22 | 0 | 0 | UA |
| May 2024 | 37 | 15 | 0 | 0 | UA |
| Apr 2024 | 30 | 10 | 0 | 0 | UA |
| Mar 2024 | 31 | 12 | 0 | 0 | UA |
| Jan 2024 | 31 | 9 | 1 | 0 | UA |
| Nov 2023 | 30 | 4 | 0 | 0 | UA |
| Oct 2023 | 31 | 3 | 0 | 0 | UA |
| Nov 2022 | 31 | 3 | 0 | 0 | UA |
| Oct 2022 | 31 | 0 | 0 | 0 | UA |
ORD–SJC seasonal on-time pattern
Best: September (92.2%) · weakest: June (58.3%)
Strongest calendar month
September
92.2% on-time · ~30 flights/mo
Busiest calendar month
February
~58 flights/mo avg
Weakest calendar month
June
58.3% on-time · ~36 flights/mo
Cancellation Rate
0.8%
6 of 761 flights
Diversion Rate
0.3%
2 of 761 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ORD - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
ORD on-time profileSJC - San Jose
Full on-time, delay-cause, and seasonal performance for San Jose, CA.
SJC on-time profileCompare the two airports
See ORD and SJC side by side on delays, cancellations, and reliability.
Compare ORD vs SJCOrigin-hub reliability standing
Mid-pack among ORD departures
From ORD, this corridor sits with 147 other 75–85% on-time routes out of 168 tracked departures, not the hub's reliability leaders (10 at ≥85%) and not the softest ( 11 below 75%). Destination: San Jose · fleet on-time rank #4073 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to ORD–SJC.
Routes with a similar on-time rate
What the Data Says About ORD to SJC
The Chicago to San Jose corridor (ORD to SJC) posts a 77.1% on-time rate on the lower edge of the average band, based on 1,131 tracked flights. Late flights run 76.8 minutes behind on average. 2 carriers cover the 1,829-mile route; over the last 24 months, 6 of 761 flights were cancelled (0.8%) and 0.3% diverted.
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
On the multi-year calendar, ORD–SJC peaks in September at 92.2% on-time while February carries the heaviest traffic (~58 flights per month) ; the softest month is June at 58.3%, a 33.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does ORD to SJC rank among US routes by traffic? ▼
How often are flights delayed from ORD to SJC? ▼
What is the cancellation rate for ORD to SJC? ▼
How far is the flight from ORD to SJC? ▼
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 ORD–SJC data
ORD–SJC is mid-pack at 77.1% on-time; month and carrier mix move more than the corridor headline.
- Compare ORD and SJC airport profiles: delay causes and top routes differ even on the same corridor. ORD airport
- If your dates flex, September (92.2% on-time) beats June (58.3%) on this corridor. Seasonal chart
- 4 other routes post a similar 77.1% 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.