Route on-time record
PDX to SAN: most on-time flights and the best time to fly
Portland (Portland International Airport) to San Diego (San Diego International Airport). 1,787 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 0.7% were cancelled. The most reliable flight number was SkyWest 3306 at 7:18 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
PDX → SAN
Portland to San Diego: 1,787 nonstop flights a year
On time (12 months)
80%
Cancelled
0.7%
avg delay 10 min
Best time to leave
Before 9 AM
85% on time vs 76% 3 to 6 PM
Most reliable airline
SkyWest
83% chance on time
Lowest nonstop fare seen in the next two months: $107 (Southwest 3357 on 2026-11-04). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · SkyWest 3306 · sold as United Express, Delta Connection, American Eagle or Alaska
7:18 AM → 9:59 AM2h 41m nonstop
Local times, typical schedule. Last flown 2026-03-17.
88%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 93% of the time (28 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 76%).
- Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find 7:18 AM flight fares Opens this date on Aviasales#2 · Alaska 1394
10:30 AM → 1:08 PM2h 38m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 87%
- Cancelled
- 1.0%
- Avg arrival delay
- 7 min
- Arrived on time 87% of the time (206 flights, Jun 2025 to May 2026).
Strong track record · 206 flights
Find Alaska 1394 fares Opens this date on Aviasales#3 · Southwest 3555
11:35 AM → 1:55 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 87% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find Southwest 3555 fares Opens this date on Aviasales#4 · Alaska 724
7:15 AM → 9:58 AM2h 43m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 577; its record covers all of them.
81%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.6%
- Avg arrival delay
- 7 min
- Arrived on time 80% of the time (178 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 76%).
- Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
Moderate track record · 178 flights
Find Alaska 724 fares Opens this date on Aviasales#5 · Southwest 3353
2:30 PM → 4:55 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
81%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 85% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Short track record (33 flights), so its score leans on the airline's record at this hour.
Limited track record · 33 flights
Find Southwest 3353 fares Opens this date on Aviasales#6 · Alaska 721
9:32 PM → 12:04 AM2h 32m nonstop
Local times, typical schedule. Last flown 2026-05-30.
79%
chance on time
- On time (history)
- 80%
- Cancelled
- 1.0%
- Avg arrival delay
- 10 min
- Arrived on time 80% of the time (103 flights, Jun 2025 to May 2026).
Moderate track record · 103 flights
Find Alaska 721 fares Opens this date on Aviasales#7 · Alaska 669
5:40 PM → 8:20 PM2h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 88% of the time (16 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 76% on time; Before 9 AM: 85%).
- 69% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Alaska 669 fares Opens this date on Aviasales#8 · Alaska 667
5:32 PM → 8:11 PM2h 39m nonstop
Local times, typical schedule. Last flown 2026-05-12.
76%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.5%
- Avg arrival delay
- 11 min
- Arrived on time 76% of the time (194 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 76% on time; Before 9 AM: 85%).
Moderate track record · 194 flights
Find Alaska 667 fares Opens this date on Aviasales#9 · Alaska 1312
2:30 PM → 5:05 PM2h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.5%
- Avg arrival delay
- 10 min
- Arrived on time 76% of the time (214 flights, Jun 2025 to May 2026).
Strong track record · 214 flights
Find Alaska 1312 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)83%
41 flights · 90% on time as flown · 0.5% cancel
- Southwest Airlines81%
115 flights · 84% on time as flown · 0.4% cancel
- Alaska Airlines79%
1,631 flights · 79% on time as flown · 0.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM85%
358 flights · avg delay 8 min
- 9 AM to noon82%
407 flights · avg delay 9 min
- Noon to 3 PM80%
402 flights · avg delay 9 min
- 3 to 6 PM76%
368 flights · avg delay 13 min
- After 9 PM79%
215 flights · avg delay 11 min
Best day: Wednesday (86%). Worst: Sunday (77%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Air traffic control and airport volume36%
- Late-arriving aircraft35%
- Airline (crew, maintenance, boarding)29%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
PDX to SAN questions
- What time of day is best to fly PDX to SAN?
- Before 9 AM: 85% of flights arrived on time, against 76% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from PDX to SAN?
- SkyWest, with a season-adjusted 83% chance of operating and arriving on time over 41 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on PDX to SAN?
- November (76% on time); the best was May (88%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from PDX
- SAN to PDX (return)
- PDX to SEA 84%
- PDX to LAX 87%
- PDX to DEN 80%
- PDX to PHX 80%
- PDX to SFO 75%
- PDX to LAS 81%
- PDX to ORD 77%
- PDX to DFW 80%
- PDX to SLC 88%
- PDX to SMF 83%
- PDX to SJC 82%
- PDX to ATL 87%
Live status: FAA delays and ground stops