Route
SAN → BOI
San Diego International Airport Boise Air Terminal/Gowen Field
Alerts at SAN and BOI
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Read the story →
Watch Ground Delay Program SAN
Ground Delay Program at San Diego International Airport (SAN): Average 37 minutes, up to 1 hour and 11 minutes
Reason: airport volume
Airport status
How punctual is this route?
- On-time arrivals
- 78.8%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,035
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 61%
- Airline (crew, maintenance, cleaning) 24%
- Air traffic control & airport 13%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 89.4% | 86 |
| October 2025 | 86.7% | 91 |
| November 2025 | 79.8% | 90 |
| December 2025 | 77.7% | 94 |
| January 2026 | 76.4% | 73 |
| February 2026 | 86.5% | 74 |
| March 2026 | 80.9% | 89 |
| April 2026 | 74.7% | 79 |
| May 2026 | 69.3% | 101 |
| June 2026 | 68.6% | 86 |
| July 2026 | 82.5% | 80 |
| August 2026 | 75.0% | 92 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 426 | 73.0% | 0.0% | 60 min |
| SkyWest Airlines | 356 | 83.9% | 0.3% | 80 min |
| Alaska Airlines | 253 | 81.2% | 1.2% | 50 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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OO3330
12% late · 245 flights
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AS1332
27% late · 71 flights
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OO3331
24% late · 70 flights
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AS1425
14% late · 56 flights
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AS908
13% late · 55 flights
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WN2397
48% late · 50 flights
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AS490
19% late · 36 flights
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WN4873
23% late · 35 flights
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AS220
18% late · 34 flights
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OO3022
25% late · 28 flights
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WN3532
25% late · 28 flights
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WN644
26% late · 27 flights
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WN3379
20% late · 25 flights
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WN1148
62% late · 24 flights
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WN1767
22% late · 23 flights
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WN3402
30% late · 20 flights
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