Route
SAN → TUS
San Diego International Airport Tucson International Airport
Alerts at SAN and TUS
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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
- 75.6%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 70 min
- Flights arriving 15+ minutes late
- Flights tracked
- 663
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 73%
- Airline (crew, maintenance, cleaning) 23%
- Air traffic control & airport 3%
- Security 0%
- Extreme weather 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 80.4% | 47 |
| October 2025 | 83.9% | 56 |
| November 2025 | 72.2% | 54 |
| December 2025 | 66.7% | 57 |
| January 2026 | 85.5% | 56 |
| February 2026 | 86.5% | 52 |
| March 2026 | 86.2% | 58 |
| April 2026 | 64.3% | 56 |
| May 2026 | 76.8% | 56 |
| June 2026 | 72.7% | 56 |
| July 2026 | 74.1% | 58 |
| August 2026 | 59.6% | 57 |
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 | 663 | 75.6% | 0.3% | 70 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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WN4876
42% late · 60 flights
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WN1156
11% late · 55 flights
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WN4269
39% late · 55 flights
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WN3984
15% late · 53 flights
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WN3555
8% late · 51 flights
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WN287
27% late · 42 flights
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WN1863
29% late · 28 flights
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WN2572
28% late · 25 flights
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WN2406
33% late · 24 flights
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WN4139
8% late · 24 flights
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WN2673
27% late · 22 flights
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WN3447
32% late · 22 flights
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