83% of flights from Boise to Oakland arrived on time over the past 12 months. That is better than the typical U.S. route. The 11 a.m. departures ran on time 95% of the time; the 10 a.m. ones 93%. 4% of flights arrived more than an hour late or not at all.
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for BOI → OAK: when a flight was late, it was under 45 minutes late 64% of the time. About 1 in 25 flights landed an hour or more late, and 1 in 88 three hours or more; 0.0% were cancelled outright.
- On time or early83%
- 15–30 min late8.1%
- 30–60 min late4.7%
- 1–2 hours late1.9%
- 2–3 hours late0.9%
- 3+ hours late1.1%
- Diverted0.0%
- Cancelled0.0%
Share of all 529 scheduled flights, past 12 months, by arrival time against schedule.
By airline
| Airline | Flights | On time | Cancelled | Typical arrival | 1h+ late | Avg when late | Operated by |
|---|---|---|---|---|---|---|---|
| Southwest Airlines | 529 | 83% | 0.0% | −7 min | 4.0% | +57 min | Southwest Airlines |
Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.
Best time of day to fly
On-time rate by scheduled departure hour (local time at BOI). Delays build through the day as late planes knock on, so early flights usually do best.
Last flight of the day
On BOI → OAK, each airline's last flight of the day was cancelled 0.0% of the time, against 0.0% for its earlier flights, about the same. It arrived 3+ hours late 1.2% of the time (earlier flights: 1.2%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.
| Airline | Last departure | Last: cancelled | Last: 3h+ late | Earlier: cancelled | Next morning |
|---|---|---|---|---|---|
| Southwest Airlines | 12:10 p.m. | 0.0% | 1.2% | 0.0% | first flight 12:10 p.m. |
Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.
By month
Each calendar month pooled over 2023–2026. Best: September (93%). Worst: June (74%).
By day of week
| Day | Flights | On time | Cancelled |
|---|---|---|---|
| Monday | 80 | — | — |
| Tuesday | 79 | — | — |
| Wednesday | 78 | — | — |
| Thursday | 77 | — | — |
| Friday | 77 | — | — |
| Saturday | 60 | — | — |
| Sunday | 78 | — | — |
Why flights were late
Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.
Month by month
Not enough months with data to draw a trend.
Worst days in the past year
| Date | Flights | On time | Cancelled |
|---|---|---|---|
| Dec 20, 2025 | 3 | 67% | 0 |
| Nov 30, 2025 | 3 | 67% | 0 |
| Nov 29, 2025 | 3 | 67% | 0 |
| Dec 27, 2025 | 3 | 67% | 0 |
| Nov 22, 2025 | 3 | 100% | 0 |
Nearby airport alternatives
Other ways to make the same trip, using airports within 60 miles of Boise or Oakland. BOI → SJC has been 4 points more reliable.
| Route | Flights | On time | Cancelled |
|---|---|---|---|
| BOI → OAK (this route) | 529 | 83% | 0.0% |
| BOI → SJC Boise /Gowen to San Jose | 687 | 87% | 0.1% |
| BOI → SFO Boise /Gowen to San Francisco | 1,827 | 65% | 0.5% |
Questions
How often are flights from BOI to OAK on time?
83% of 529 scheduled flights from Boise, ID to Oakland, CA arrived within 15 minutes of schedule between September 2025 and August 2026. 0.0% were cancelled.
What is the best time of day to fly BOI to OAK?
Flights scheduled to leave at 11 a.m. were the most reliable (95% on time). The 10 a.m. departures were the least (93%).
What month has the most delays from BOI to OAK?
June (74% on time). The best month is September (93%), over 2023–2026.
Is the last flight of the day from BOI to OAK more likely to be cancelled?
Not much. Each airline's last BOI–OAK flight of the day was cancelled 0.0% of the time over the past year, against 0.0% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.
Related
- OAK → BOI (return)
- Boise /Gowen (BOI) delays by hour
- Flights into Oakland (OAK)
- Southwest Airlines on-time record
- Connecting off this flight? Check the risk
Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.