Route on-time record
OAK to DEN: most on-time flights and the best time to fly
Oakland (Oakland San Francisco Bay Airport) to Denver (Denver International Airport). 1,615 nonstop flights in Jun 2025 to May 2026, 73% arrived within 15 minutes and 0.4% were cancelled. The most reliable flight number was Southwest 1063 at 6:15 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
OAK → DEN
Oakland to Denver: 1,615 nonstop flights a year
On time (12 months)
73%
Cancelled
0.4%
avg delay 14 min
Best time to leave
Before 9 AM
92% on time vs 55% 3 to 6 PM
Most reliable airline
Southwest
73% chance on time
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 1063
6:15 AM → 9:45 AM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2595; its record covers all of them.
89%
chance on time
- On time (history)
- 91%
- Cancelled
- 1.1%
- Avg arrival delay
- 5 min
- Arrived on time 91% of the time (86 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 3 to 6 PM: 55%).
Moderate track record · 86 flights
Find Southwest 1063 fares Opens this date on Aviasales#2 · Southwest 3959
9:25 AM → 12:50 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-27. Same departure also flew as Southwest 3762; its record covers all of them.
82%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 83% of the time (24 flights, Jun 2025 to May 2026).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Southwest 3959 fares Opens this date on Aviasales#3 · Southwest 3533
11:15 AM → 2:40 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2631; its record covers all of them.
72%
chance on time
- On time (history)
- 73%
- Cancelled
- 2.5%
- Avg arrival delay
- 13 min
- Arrived on time 73% of the time (78 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 78 flights
Find Southwest 3533 fares Opens this date on Aviasales#4 · Southwest 791
1:10 PM → 4:40 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-30.
65%
chance on time
- On time (history)
- 63%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 63% of the time (8 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 791 fares Opens this date on Aviasales#5 · Southwest 4605
7:35 PM → 11:00 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 508; its record covers all of them.
59%
chance on time
- On time (history)
- 55%
- Cancelled
- 0.0%
- Avg arrival delay
- 20 min
- Arrived on time 55% of the time (88 flights, Jun 2025 to May 2026).
- Never cancelled in 88 scheduled flights.
- 74% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 88 flights
Find Southwest 4605 fares Opens this date on Aviasales#6 · Southwest 3790
2:50 PM → 6:15 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2589; its record covers all of them.
49%
chance on time
- On time (history)
- 38%
- Cancelled
- 0.0%
- Avg arrival delay
- 31 min
- Arrived on time 38% of the time (63 flights, Jun 2025 to May 2026).
- Never cancelled in 64 scheduled flights.
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 63 flights
Find Southwest 3790 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines73%
1,615 flights · 73% on time as flown · 0.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM92%
569 flights · avg delay 4 min
- 9 AM to noon75%
249 flights · avg delay 15 min
- Noon to 3 PM58%
357 flights · avg delay 21 min
- 3 to 6 PM55%
164 flights · avg delay 27 min
- 6 to 9 PM63%
274 flights · avg delay 19 min
Best day: Saturday (83%). Worst: Monday (75%).
Smarter routing
Nearby airports that run more on time
SJC → DEN 81% chance on time
Norman Y. Mineta San Jose International Airport to Denver International Airport · 2,594 flights a year · 29 mi from your airports · yours: 73%
SFO → DEN 76% chance on time
San Francisco International Airport to Denver International Airport · 5,384 flights a year · 11 mi from your airports · yours: 73%
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 aircraft36%
- Airline (crew, maintenance, boarding)29%
- Air traffic control and airport volume28%
- Severe weather6%
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 DEN questions
- What time of day is best to fly OAK to DEN?
- Before 9 AM: 92% of flights arrived on time, against 55% 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 OAK to DEN?
- Southwest, with a season-adjusted 73% chance of operating and arriving on time over 1,615 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 DEN?
- June (71% on time); the best was November (87%), 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
- DEN 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 ONT 83%
- OAK to PDX 81%
- OAK to HNL 80%
Live status: FAA delays and ground stops