Route on-time record
SAN to BOI: most on-time flights and the best time to fly
San Diego (San Diego International Airport) to Boise (Boise Air Terminal/Gowen Field). 1,046 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was SkyWest 3330 at 9:04 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SAN → BOI
San Diego to Boise: 1,046 nonstop flights a year
On time (12 months)
79%
Cancelled
0.5%
avg delay 12 min
Best time to leave
Before 9 AM
90% on time vs 65% noon to 3 PM
Most reliable airline
SkyWest
85% chance on time
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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 3330 · sold as United Express, Delta Connection, American Eagle or Alaska
9:04 AM → 12:32 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.3%
- Avg arrival delay
- 7 min
- Arrived on time 89% of the time (327 flights, Jun 2025 to May 2026).
- Departs inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
Strong track record · 327 flights
Find 9:04 AM flight fares Opens this date on Aviasales#2 · Alaska 1425
8:18 PM → 11:47 PM2h 29m nonstop
Local times, typical schedule. Last flown 2026-05-12.
84%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 86% of the time (56 flights, Jun 2025 to May 2026).
- Never cancelled in 56 scheduled flights.
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
- Short track record (56 flights), so its score leans on the airline's record at this hour.
Limited track record · 56 flights
Find Alaska 1425 fares Opens this date on Aviasales#3 · SkyWest 3022 · sold as United Express, Delta Connection, American Eagle or Alaska
7:12 PM → 10:37 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 68%
- Cancelled
- 0.0%
- Avg arrival delay
- 20 min
- Arrived on time 68% of the time (19 flights, Jun 2025 to May 2026).
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find 7:12 PM flight fares Opens this date on Aviasales#4 · Southwest 1545
8:20 AM → 11:45 AM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
81%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 87% of the time (15 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; Noon to 3 PM: 65%).
- Departs inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 1545 fares Opens this date on Aviasales#5 · Alaska 220
8:04 PM → 11:30 PM2h 26m nonstop
Local times, typical schedule. Last flown 2026-03-17.
80%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 82% of the time (34 flights, Jun 2025 to May 2026).
- Never cancelled in 34 scheduled flights.
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
- Short track record (34 flights), so its score leans on the airline's record at this hour.
Limited track record · 34 flights
Find Alaska 220 fares Opens this date on Aviasales#6 · Southwest 1767
7:10 PM → 10:30 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
74%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 78% of the time (23 flights, Jun 2025 to May 2026).
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
- 84% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 1767 fares Opens this date on Aviasales#7 · Southwest 2092
3:55 PM → 7:10 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-04-05.
68%
chance on time
- On time (history)
- 70%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 70% of the time (10 flights, Jun 2025 to May 2026).
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
- 62% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find Southwest 2092 fares Opens this date on Aviasales#8 · Southwest 1148
6:35 PM → 9:50 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-29.
56%
chance on time
- On time (history)
- 39%
- Cancelled
- 0.0%
- Avg arrival delay
- 22 min
- Arrived on time 39% of the time (23 flights, Jun 2025 to May 2026).
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
- 89% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 1148 fares Opens this date on Aviasales#9 · Southwest 2397
12:25 PM → 3:40 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
55%
chance on time
- On time (history)
- 53%
- Cancelled
- 0.0%
- Avg arrival delay
- 35 min
- Arrived on time 53% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Leaves in this route's least on-time window (Noon to 3 PM: 65% on time; Before 9 AM: 90%).
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
Limited track record · 47 flights
Find Southwest 2397 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)85%
426 flights · 87% on time as flown · 0.5% cancel
- Alaska Airlines79%
265 flights · 81% on time as flown · 0.9% cancel
- Southwest Airlines71%
355 flights · 69% on time as flown · 0.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM90%
193 flights · avg delay 5 min
- 9 AM to noon88%
202 flights · avg delay 8 min
- Noon to 3 PM65%
203 flights · avg delay 22 min
- 3 to 6 PM71%
55 flights · avg delay 17 min
- 6 to 9 PM78%
393 flights · avg delay 11 min
Best day: Wednesday (85%). Worst: Friday (72%).
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 aircraft60%
- Airline (crew, maintenance, boarding)23%
- Air traffic control and airport volume15%
- Severe weather2%
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
SAN to BOI questions
- What time of day is best to fly SAN to BOI?
- Before 9 AM: 90% of flights arrived on time, against 65% for departures noon to 3 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 SAN to BOI?
- SkyWest, with a season-adjusted 85% chance of operating and arriving on time over 426 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 SAN to BOI?
- January (75% on time); the best was February (83%), 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 SAN
- BOI to SAN (return)
- SAN to SFO 68%
- SAN to LAS 76%
- SAN to DEN 79%
- SAN to PHX 76%
- SAN to SMF 77%
- SAN to SJC 78%
- SAN to SEA 81%
- SAN to ORD 78%
- SAN to DFW 77%
- SAN to OAK 75%
- SAN to SLC 84%
- SAN to AUS 74%
Live status: FAA delays and ground stops