Route · SAN → BOI · 2020–2025 BTS data
San Diego to Boise
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SAN to BOI (San Diego to Boise) ranks #2988 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 81.7%
- On-time
- +2.7 pts
- vs US avg
- 58 min
- Delay when late
- 3,783
- Flights
- #2988 of 4927
- Corpus placement
Cancelled
0.7%
Best Month
Sep 2025 90%
Worst Month
Dec 2024 63%
Distance
749 mi
Carriers
15
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 94 | 21 | 0 | 0 | WN,AS,OO |
| Nov 2025 | 90 | 18 | 1 | 0 | OO,AS,WN |
| Oct 2025 | 91 | 12 | 1 | 0 | AS,OO,WN |
| Sep 2025 | 86 | 9 | 1 | 0 | WN,OO,AS |
| Aug 2025 | 88 | 17 | 0 | 0 | OO,WN,AS |
| Jul 2025 | 91 | 23 | 0 | 0 | OO,WN |
| Jun 2025 | 90 | 22 | 1 | 0 | OO,WN |
| May 2025 | 93 | 16 | 0 | 0 | OO,WN |
| Apr 2025 | 69 | 12 | 1 | 0 | OO,WN |
| Mar 2025 | 60 | 16 | 0 | 0 | OO,WN |
| Feb 2025 | 45 | 12 | 1 | 0 | OO,WN |
| Jan 2025 | 44 | 13 | 1 | 0 | OO,WN |
| Dec 2024 | 65 | 24 | 3 | 0 | OO,WN |
| Nov 2024 | 65 | 21 | 1 | 0 | OO,WN |
| Oct 2024 | 72 | 26 | 1 | 0 | AS,OO,WN |
| Sep 2024 | 56 | 16 | 0 | 0 | WN,OO |
| Aug 2024 | 62 | 12 | 0 | 0 | WN,OO |
| Jul 2024 | 66 | 16 | 0 | 0 | OO,WN |
| Jun 2024 | 65 | 14 | 0 | 0 | OO,WN |
| May 2024 | 61 | 7 | 0 | 0 | OO,WN |
| Apr 2024 | 45 | 4 | 0 | 0 | OO,WN |
| Mar 2024 | 40 | 8 | 0 | 0 | OO,WN |
| Feb 2024 | 41 | 5 | 0 | 0 | OO,WN |
| Jan 2024 | 51 | 11 | 0 | 1 | WN,OO |
SAN–BOI seasonal on-time pattern
Best: May (88.4%) · weakest: December (75.8%)
Strongest calendar month
May
88.4% on-time · ~60 flights/mo
Busiest calendar month
August
~70 flights/mo avg
Weakest calendar month
December
75.8% on-time · ~61 flights/mo
Cancellation Rate
0.7%
12 of 1,630 flights
Diversion Rate
0.1%
1 of 1,630 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SAN - San Diego
Full on-time, delay-cause, and seasonal performance for San Diego, CA.
SAN on-time profileBOI - Boise
Full on-time, delay-cause, and seasonal performance for Boise, ID.
BOI on-time profileCompare the two airports
See SAN and BOI side by side on delays, cancellations, and reliability.
Compare SAN vs BOIOrigin-hub reliability standing
Mid-pack among SAN departures
From SAN, this corridor sits with 34 other 75–85% on-time routes out of 51 tracked departures, not the hub's reliability leaders (13 at ≥85%) and not the softest ( 4 below 75%). Destination: Boise · fleet on-time rank #2488 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to SAN–BOI.
Routes with a similar on-time rate
What the Data Says About SAN to BOI
3,783 tracked flights put the SAN to BOI pairing (San Diego to Boise) at a 81.7% on-time rate, squarely in line with the wider network. Delays that do occur run 58.3 minutes on average. Across the 749-mile route and its 15 carriers, the trailing 24 months show 0.7% cancelled and 0.1% diverted (1,630 flights sampled).
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 90% on-time, while Dec 2024 came in at just 63% - a 27-point swing worth factoring into travel timing.
On the multi-year calendar, SAN–BOI peaks in May at 88.4% on-time while August carries the heaviest traffic (~70 flights per month) ; the softest month is December at 75.8%, a 12.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does SAN to BOI rank among US routes by traffic? ▼
How often are flights delayed from SAN to BOI? ▼
What is the cancellation rate for SAN to BOI? ▼
How far is the flight from SAN to BOI? ▼
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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 SAN–BOI data
SAN–BOI is mid-pack at 81.7% on-time; month and carrier mix move more than the corridor headline.
- Compare SAN and BOI airport profiles: delay causes and top routes differ even on the same corridor. SAN airport
- If your dates flex, May (88.4% on-time) beats December (75.8%) on this corridor. Seasonal chart
- 4 other routes post a similar 81.7% 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.