San Diego (SAN) to Portland (PDX): On-Time Performance
Data through May 2026
The calendar drives reliability on SAN–PDX. April 2026 flights landed on schedule 91% of the time, but December 2024 dropped to 72% — a gap of 19 points. Across the full period the route averages 84% on-time against a national 78%. Morning departures also hold up better than evening ones (89% vs 76%), which matters most in the rough months.
- On-time
- 84%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 4.9
- last 12 months
- Duration
- 2h 41m
- scheduled
- Distance
- 933 mi
Best airline from SAN to PDX
4 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 88% | 6 min | 3.4% | 119 |
| Alaska Airlines | 85% | 9 min | 1.1% | 3,185 |
| SkyWest Airlines | 82% | 12 min | 0.0% | 116 |
| Southwest Airlines | 70% | 15 min | 0.0% | 158 |
Monthly on-time trend
Best time to fly from SAN to PDX
Aim for departures around 7 a.m. (95% on-time); avoid 7 p.m. departures (64%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 86% | 7 min |
| Tuesdaybest | 92% | 7 min |
| Wednesday | 87% | 9 min |
| Thursday | 81% | 11 min |
| Friday | 81% | 13 min |
| Saturday | 86% | 7 min |
| Sunday | 78% | 12 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft50%
- Airline operations27%
- National airspace system20%
- Weather3%
- Security1%
Frequently asked questions
- How often are flights from SAN to PDX delayed?
- 16% of SAN–PDX flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 9 minutes.
- Which airline is most reliable from SAN to PDX?
- Spirit Airlines has the best on-time record on this route at 88%, based on 119 flights. 4 airlines flew SAN–PDX frequently enough to compare in this period.
- What is the best time of day to fly from SAN to PDX?
- Departures around 7 a.m. have the best record (95% on-time), while departures around 7 p.m. have the worst (64%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SAN to PDX?
- The scheduled SAN–PDX flight time averages 2h 41m over 933 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
- How often are SAN to PDX flights cancelled?
- 1.1% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SAN to PDX?
- December 2024 was the roughest month in this dataset, with only 72% of arrivals on time. The best was April 2026 at 91%. If your dates are flexible, that 19-point gap is worth planning around.
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Based on 3,578 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.