Route on-time record
OAK to PDX: most on-time flights and the best time to fly
Oakland (Oakland San Francisco Bay Airport) to Portland (Portland International Airport). 1,291 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was Southwest 3703 at 7:25 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
OAK → PDX
Oakland to Portland: 1,291 nonstop flights a year
On time (12 months)
81%
Cancelled
0.5%
avg delay 12 min
Best time to leave
Before 9 AM
98% on time vs 47% after 9 PM
Most reliable airline
SkyWest
81% chance on time
Lowest nonstop fare seen in the next two months: $217 (Southwest 4501 on 2026-10-23). 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 · Southwest 3703
7:25 AM → 9:05 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (23 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 98% on time; After 9 PM: 47%).
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 3703 fares Opens this date on Aviasales#2 · Southwest 3270
5:35 AM → 7:20 AM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-06.
92%
chance on time
- On time (history)
- 97%
- Cancelled
- 3.0%
- Avg arrival delay
- 1 min
- Arrived on time 97% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Leaves in this route's most on-time window (Before 9 AM: 98% on time; After 9 PM: 47%).
- Short track record (32 flights), so its score leans on the airline's record at this hour.
Limited track record · 32 flights
Find Southwest 3270 fares Opens this date on Aviasales#3 · Southwest 971
9:20 AM → 11:00 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 1498; its record covers all of them.
91%
chance on time
- On time (history)
- 97%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 97% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Short track record (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Southwest 971 fares Opens this date on Aviasales#4 · Southwest 576
2:40 PM → 4:20 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-30.
78%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 74% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- 61% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (47 flights), so its score leans on the airline's record at this hour.
Limited track record · 47 flights
Find Southwest 576 fares Opens this date on Aviasales#5 · SkyWest 3066 · sold as United Express, Delta Connection, American Eagle or Alaska
7:03 PM → 8:50 PM1h 47m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 63%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 63% of the time (19 flights, Jun 2025 to May 2026).
- 70% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find 7:03 PM flight fares Opens this date on Aviasales#6 · SkyWest 3056 · sold as United Express, Delta Connection, American Eagle or Alaska
5:03 PM → 6:51 PM1h 48m nonstop
Local times, typical schedule. Last flown 2026-03-16.
76%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 80% of the time (20 flights, Jun 2025 to May 2026).
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find 5:03 PM flight fares Opens this date on Aviasales#7 · Southwest 1188
10:00 PM → 11:45 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-03.
75%
chance on time
- On time (history)
- 71%
- Cancelled
- 0.0%
- Avg arrival delay
- 18 min
- Arrived on time 71% of the time (14 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (After 9 PM: 47% on time; Before 9 AM: 98%).
- Short track record (14 flights), so its score leans on the airline's record at this hour.
Limited track record · 14 flights
Find Southwest 1188 fares Opens this date on Aviasales#8 · Southwest 358
4:55 PM → 6:40 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-06.
70%
chance on time
- On time (history)
- 60%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 min
- Arrived on time 60% of the time (15 flights, Jun 2025 to May 2026).
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 358 fares Opens this date on Aviasales#9 · Southwest 3559
8:55 PM → 10:40 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
70%
chance on time
- On time (history)
- 61%
- Cancelled
- 0.0%
- Avg arrival delay
- 24 min
- Arrived on time 61% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- 85% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find Southwest 3559 fares Opens this date on Aviasales#10 · Southwest 4510
9:15 PM → 10:55 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-04-01.
68%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 20 min
- Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (After 9 PM: 47% on time; Before 9 AM: 98%).
- 94% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 4510 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)81%
70 flights · 80% on time as flown · 0.3% cancel
- Southwest Airlines80%
1,205 flights · 81% on time as flown · 0.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM98%
288 flights · avg delay 1 min
- 9 AM to noon89%
237 flights · avg delay 6 min
- Noon to 3 PM81%
128 flights · avg delay 11 min
- 3 to 6 PM68%
215 flights · avg delay 16 min
- 6 to 9 PM76%
348 flights · avg delay 15 min
- After 9 PM47%
75 flights · avg delay 42 min
Best day: Tuesday (90%). Worst: Sunday (78%).
Smarter routing
Nearby airports that run more on time
SJC → PDX 85% chance on time
Norman Y. Mineta San Jose International Airport to Portland International Airport · 1,596 flights a year · 29 mi from your airports · yours: 80%
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
- Late-arriving aircraft69%
- Airline (crew, maintenance, boarding)28%
- Air traffic control and airport volume3%
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
OAK to PDX questions
- What time of day is best to fly OAK to PDX?
- Before 9 AM: 98% of flights arrived on time, against 47% for departures after 9 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 OAK to PDX?
- SkyWest, with a season-adjusted 81% chance of operating and arriving on time over 70 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 OAK to PDX?
- July (76% on time); the best was February (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 OAK
- PDX to OAK (return)
- OAK to LAS 80%
- OAK to SAN 69%
- OAK to BUR 82%
- OAK to SNA 86%
- OAK to LAX 81%
- OAK to PHX 78%
- OAK to SEA 77%
- OAK to SLC 89%
- OAK to LGB 87%
- OAK to DEN 73%
- OAK to ONT 83%
- OAK to HNL 80%
Live status: FAA delays and ground stops