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Route on-time record

SJC to PDX: most on-time flights and the best time to fly

San Jose (Norman Y. Mineta San Jose International Airport) to Portland (Portland International Airport). 1,596 nonstop flights in Jun 2025 to May 2026, 85% arrived within 15 minutes and 0.0% were cancelled. The most reliable flight number was SkyWest 3070 at 7:30 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

SJC → PDX

San Jose to Portland: 1,596 nonstop flights a year

On time (12 months)

85%

Cancelled

0.0%

avg delay 9 min

Best time to leave

Before 9 AM

95% on time vs 62% 3 to 6 PM

Most reliable airline

SkyWest

93% chance on time

Check SJC to PDX fares

Lowest nonstop fare seen in the next two months: $98 (Southwest 727 on 2026-10-24). 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. #1 · SkyWest 3070 · sold as United Express, Delta Connection, American Eagle or Alaska

    7:30 AM → 9:27 AM1h 57m nonstop

    Local times, typical schedule. Last flown 2026-05-12.

    97%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (21 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 3 to 6 PM: 62%).
    • Short track record (21 flights), so its score leans on the airline's record at this hour.

    Limited track record · 21 flights

    Find 7:30 AM flight fares Opens this date on Aviasales

  2. #2 · Alaska 550

    7:40 AM → 9:32 AM1h 52m nonstop

    Local times, typical schedule. Last flown 2026-03-17.

    95%

    chance on time

    On time (history)
    97%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 97% of the time (29 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 3 to 6 PM: 62%).
    • Short track record (29 flights), so its score leans on the airline's record at this hour.

    Limited track record · 29 flights

    Find Alaska 550 fares Opens this date on Aviasales

  3. #3 · Alaska 1341

    8:00 AM → 9:50 AM1h 50m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    95%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (19 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 3 to 6 PM: 62%).
    • Short track record (19 flights), so its score leans on the airline's record at this hour.

    Limited track record · 19 flights

    Find Alaska 1341 fares Opens this date on Aviasales

  4. #4 · SkyWest 3379 · sold as United Express, Delta Connection, American Eagle or Alaska

    11:30 AM → 1:24 PM1h 54m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 3004; its record covers all of them.

    93%

    chance on time

    On time (history)
    93%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 93% of the time (152 flights, Jun 2025 to May 2026).
    • Never cancelled in 152 scheduled flights.

    Moderate track record · 152 flights

    Find 11:30 AM flight fares Opens this date on Aviasales

  5. #5 · SkyWest 3313 · sold as United Express, Delta Connection, American Eagle or Alaska

    6:18 PM → 8:15 PM1h 57m nonstop

    Local times, typical schedule. Last flown 2026-04-21.

    92%

    chance on time

    On time (history)
    94%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 94% of the time (130 flights, Jun 2025 to May 2026).
    • Never cancelled in 130 scheduled flights.

    Moderate track record · 130 flights

    Find 6:18 PM flight fares Opens this date on Aviasales

  6. #6 · Southwest 1891

    6:00 AM → 7:55 AM1h 55m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    92%

    chance on time

    On time (history)
    97%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 97% of the time (39 flights, Jun 2025 to May 2026).
    • Never cancelled in 39 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 3 to 6 PM: 62%).
    • Short track record (39 flights), so its score leans on the airline's record at this hour.

    Limited track record · 39 flights

    Find Southwest 1891 fares Opens this date on Aviasales

  7. #7 · Southwest 1656

    9:55 AM → 11:45 AM1h 50m nonstop

    Local times, typical schedule. Last flown 2026-05-27.

    90%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (16 flights, Jun 2025 to May 2026).
    • Short track record (16 flights), so its score leans on the airline's record at this hour.

    Limited track record · 16 flights

    Find Southwest 1656 fares Opens this date on Aviasales

  8. #8 · Southwest 1484

    8:25 AM → 10:15 AM1h 50m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    87%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 91% of the time (23 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 3 to 6 PM: 62%).
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Southwest 1484 fares Opens this date on Aviasales

  9. #9 · Southwest 2461

    8:45 PM → 10:35 PM1h 50m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 985; its record covers all of them.

    70%

    chance on time

    On time (history)
    71%
    Cancelled
    0.0%
    Avg arrival delay
    15 min
    • Arrived on time 71% of the time (63 flights, Jun 2025 to May 2026).
    • Never cancelled in 63 scheduled flights.
    • 71% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 63 flights

    Find Southwest 2461 fares Opens this date on Aviasales

  10. #10 · Southwest 826

    6:55 PM → 8:45 PM1h 50m nonstop

    Local times, typical schedule. Last flown 2026-05-27.

    70%

    chance on time

    On time (history)
    69%
    Cancelled
    0.0%
    Avg arrival delay
    22 min
    • Arrived on time 69% of the time (16 flights, Jun 2025 to May 2026).
    • 68% 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 Southwest 826 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)93%

    484 flights · 94% on time as flown · 0.0% cancel

  • Alaska Airlines90%

    113 flights · 94% on time as flown · 0.0% cancel

  • Southwest Airlines80%

    999 flights · 80% on time as flown · 0.0% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM95%

    337 flights · avg delay 3 min

  • 9 AM to noon92%

    548 flights · avg delay 6 min

  • Noon to 3 PM89%

    171 flights · avg delay 6 min

  • 3 to 6 PM62%

    135 flights · avg delay 19 min

  • 6 to 9 PM76%

    303 flights · avg delay 16 min

  • After 9 PM65%

    102 flights · avg delay 21 min

Best day: Wednesday (90%). Worst: Sunday (82%).

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.

J
86
F
87
M
89
A
88
M
86
J
81
J
82
A
86
S
85
O
85
N
88
D
87

What delays this route

  • Late-arriving aircraft68%
  • Airline (crew, maintenance, boarding)28%
  • Air traffic control and airport volume4%

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

SJC to PDX questions

What time of day is best to fly SJC to PDX?
Before 9 AM: 95% of flights arrived on time, against 62% 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 SJC to PDX?
SkyWest, with a season-adjusted 93% chance of operating and arriving on time over 484 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 SJC to PDX?
June (81% on time); the best was March (89%), 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 SJC

Live status: FAA delays and ground stops