Route · BOI → SJC · 2020–2025 BTS data
Boise to San Jose
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BOI to SJC (Boise to San Jose) ranks #3002 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 87.6%
- On-time
- +8.6 pts
- vs US avg
- 57 min
- Delay when late
- 3,755
- Flights
- #3002 of 4927
- Corpus placement
Cancelled
0.1%
Best Month
Apr 2025 97%
Worst Month
Jul 2025 73%
Distance
523 mi
Carriers
6
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 71 | 11 | 0 | 0 | WN,OO |
| Nov 2025 | 62 | 9 | 1 | 0 | OO,WN |
| Oct 2025 | 58 | 10 | 0 | 0 | OO,WN |
| Sep 2025 | 60 | 11 | 0 | 0 | WN,OO |
| Aug 2025 | 62 | 9 | 0 | 0 | OO,WN |
| Jul 2025 | 62 | 17 | 0 | 0 | OO,WN |
| Jun 2025 | 60 | 10 | 0 | 0 | OO,WN |
| May 2025 | 62 | 3 | 0 | 0 | OO,WN |
| Apr 2025 | 60 | 2 | 0 | 0 | OO,WN |
| Mar 2025 | 54 | 7 | 0 | 0 | OO,WN |
| Feb 2025 | 48 | 9 | 0 | 0 | OO,WN |
| Jan 2025 | 48 | 4 | 0 | 0 | OO,WN |
| Dec 2024 | 48 | 12 | 1 | 0 | OO,WN |
| Nov 2024 | 52 | 3 | 0 | 0 | OO,WN |
| Oct 2024 | 58 | 4 | 0 | 0 | OO,WN |
| Sep 2024 | 60 | 2 | 0 | 0 | WN,OO |
| Aug 2024 | 63 | 7 | 0 | 0 | WN,OO |
| Jul 2024 | 62 | 4 | 0 | 0 | OO,WN |
| Jun 2024 | 60 | 13 | 0 | 0 | OO,WN |
| May 2024 | 47 | 6 | 0 | 0 | OO,WN |
| Apr 2024 | 45 | 4 | 0 | 0 | OO,WN |
| Mar 2024 | 48 | 5 | 0 | 0 | OO,WN |
| Dec 2023 | 37 | 2 | 0 | 0 | WN |
| Nov 2023 | 52 | 6 | 0 | 0 | WN,OO |
BOI–SJC seasonal on-time pattern
Best: April (93.9%) · weakest: December (79.4%)
Strongest calendar month
April
93.9% on-time · ~50 flights/mo
Busiest calendar month
August
~69 flights/mo avg
Weakest calendar month
December
79.4% on-time · ~55 flights/mo
Cancellation Rate
0.1%
2 of 1,339 flights
Diversion Rate
0.0%
0 of 1,339 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BOI - Boise
Full on-time, delay-cause, and seasonal performance for Boise, ID.
BOI 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 BOI and SJC side by side on delays, cancellations, and reliability.
Compare BOI vs SJCOrigin-hub reliability standing
Among BOI's stronger departures
BOI → SJC posts a 87.6% on-time rate, landing in the ≥85% band with 10 of 19 BTS-tracked routes leaving Boise. The same hub also shows 9 mid-band and 0 challenged departures · fleet-wide on-time rank #493 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to BOI–SJC.
Routes with a similar on-time rate
What the Data Says About BOI to SJC
Boise to San Jose (BOI to SJC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 87.6% on-time rate across 3,755 flights, with delays that do happen averaging 56.8 minutes. The corridor runs roughly 523 miles and is served by 6 carriers. Over the most recent 24 months, 2 of 1,339 flights were cancelled (0.1%) and 0 diverted (0.0%).
The monthly split is wide on this route: Apr 2025 posted the strongest performance at 97% on-time, while Jul 2025 came in at just 73% - a 24-point swing worth factoring into travel timing.
On the multi-year calendar, BOI–SJC peaks in April at 93.9% on-time while August carries the heaviest traffic (~69 flights per month) ; the softest month is December at 79.4%, a 14.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does BOI to SJC rank among US routes by traffic? ▼
How often are flights delayed from BOI to SJC? ▼
What is the cancellation rate for BOI to SJC? ▼
How far is the flight from BOI to SJC? ▼
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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 BOI–SJC data
BOI–SJC runs 8.6 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare BOI and SJC airport profiles: delay causes and top routes differ even on the same corridor. BOI airport
- If your dates flex, April (93.9% on-time) beats December (79.4%) on this corridor. Seasonal chart
- 4 other routes post a similar 87.6% 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.