Route · BOI → SAN · 2020–2025 BTS data
Boise to San Diego
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BOI to SAN (Boise to San Diego) ranks #2986 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 85.3%
- On-time
- +6.3 pts
- vs US avg
- 62 min
- Delay when late
- 3,787
- Flights
- #2986 of 4927
- Corpus placement
Cancelled
0.8%
Best Month
Apr 2024 94%
Worst Month
Oct 2024 67%
Distance
749 mi
Carriers
15
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 94 | 17 | 2 | 0 | WN,AS,OO |
| Nov 2025 | 89 | 17 | 1 | 0 | OO,AS,WN |
| Oct 2025 | 91 | 12 | 0 | 2 | AS,OO,WN |
| Sep 2025 | 86 | 15 | 2 | 0 | WN,OO,AS |
| Aug 2025 | 87 | 19 | 0 | 0 | OO,WN,AS |
| Jul 2025 | 91 | 12 | 0 | 0 | OO,WN |
| Jun 2025 | 90 | 14 | 1 | 0 | OO,WN |
| May 2025 | 93 | 8 | 1 | 0 | OO,WN |
| Apr 2025 | 69 | 10 | 0 | 0 | OO,WN |
| Mar 2025 | 60 | 6 | 0 | 0 | OO,WN |
| Feb 2025 | 45 | 9 | 0 | 0 | OO,WN |
| Jan 2025 | 44 | 4 | 1 | 0 | OO,WN |
| Dec 2024 | 65 | 14 | 2 | 0 | OO,WN |
| Nov 2024 | 65 | 10 | 1 | 0 | OO,WN |
| Oct 2024 | 73 | 24 | 1 | 0 | AS,OO,WN |
| Sep 2024 | 56 | 13 | 0 | 0 | WN,OO |
| Aug 2024 | 62 | 15 | 0 | 0 | WN,OO |
| Jul 2024 | 66 | 17 | 0 | 0 | OO,WN |
| Jun 2024 | 67 | 12 | 0 | 0 | OO,WN |
| May 2024 | 68 | 9 | 0 | 0 | OO,WN |
| Apr 2024 | 51 | 3 | 0 | 0 | OO,WN |
| Mar 2024 | 40 | 7 | 0 | 0 | OO,WN |
| Feb 2024 | 41 | 7 | 1 | 1 | OO,WN |
| Jan 2024 | 51 | 14 | 0 | 0 | WN,OO |
BOI–SAN seasonal on-time pattern
Best: April (89.9%) · weakest: December (80.1%)
Strongest calendar month
April
89.9% on-time · ~44 flights/mo
Busiest calendar month
August
~70 flights/mo avg
Weakest calendar month
December
80.1% on-time · ~61 flights/mo
Cancellation Rate
0.8%
13 of 1,644 flights
Diversion Rate
0.2%
3 of 1,644 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 profileSAN - San Diego
Full on-time, delay-cause, and seasonal performance for San Diego, CA.
SAN on-time profileCompare the two airports
See BOI and SAN side by side on delays, cancellations, and reliability.
Compare BOI vs SANOrigin-hub reliability standing
Among BOI's stronger departures
BOI → SAN posts a 85.3% 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 #1110 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to BOI–SAN.
Routes with a similar on-time rate
What the Data Says About BOI to SAN
Boise to San Diego (BOI to SAN) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.3% on-time rate across 3,787 flights, with delays that do happen averaging 61.7 minutes. The corridor runs roughly 749 miles and is served by 15 carriers. Over the most recent 24 months, 13 of 1,644 flights were cancelled (0.8%) and 3 diverted (0.2%).
The monthly split is wide on this route: Apr 2024 posted the strongest performance at 94% on-time, while Oct 2024 came in at just 67% - a 27-point swing worth factoring into travel timing.
On the multi-year calendar, BOI–SAN peaks in April at 89.9% on-time while August carries the heaviest traffic (~70 flights per month) ; the softest month is December at 80.1%, a 9.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does BOI to SAN rank among US routes by traffic? ▼
How often are flights delayed from BOI to SAN? ▼
What is the cancellation rate for BOI to SAN? ▼
How far is the flight from BOI to SAN? ▼
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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–SAN data
BOI–SAN runs 6.3 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 SAN airport profiles: delay causes and top routes differ even on the same corridor. BOI airport
- If your dates flex, April (89.9% on-time) beats December (80.1%) on this corridor. Seasonal chart
- 4 other routes post a similar 85.3% 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.