Route on-time record
LAX to SFO: most on-time flights and the best time to fly
Los Angeles (Los Angeles International Airport) to San Francisco (San Francisco International Airport). 10,832 nonstop flights in Jun 2025 to May 2026, 68% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was Southwest 1105 at 6:20 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
LAX → SFO
Los Angeles to San Francisco: 10,832 nonstop flights a year
On time (12 months)
68%
Cancelled
0.8%
avg delay 20 min
Best time to leave
Before 9 AM
78% on time vs 54% 6 to 9 PM
Most reliable airline
SkyWest
73% chance on time
Lowest nonstop fare seen in the next two months: $19 (Frontier 4593 on 2026-11-17). 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 1105
6:20 AM → 7:45 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
95%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 96% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 78% on time; 6 to 9 PM: 54%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
Limited track record · 55 flights
Find Southwest 1105 fares Opens this date on Aviasales#2 · Alaska 1487
6:00 AM → 7:27 AM1h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 381; its record covers all of them.
95%
chance on time
- On time (history)
- 98%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 98% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 43 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 78% on time; 6 to 9 PM: 54%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
Limited track record · 43 flights
Find Alaska 1487 fares Opens this date on Aviasales#3 · Southwest 309
6:35 AM → 8:00 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-06.
95%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 78% on time; 6 to 9 PM: 54%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
Limited track record · 33 flights
Find Southwest 309 fares Opens this date on Aviasales#4 · Delta 1421
6:30 AM → 7:54 AM1h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 96%
- Cancelled
- 2.8%
- Avg arrival delay
- 4 min
- Arrived on time 96% of the time (342 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 78% on time; 6 to 9 PM: 54%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- Lands inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
Strong track record · 342 flights
Find Delta 1421 fares Opens this date on Aviasales#5 · United 2647
6:00 AM → 7:35 AM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 89% of the time (45 flights, Jun 2025 to May 2026).
- Never cancelled in 45 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 78% on time; 6 to 9 PM: 54%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
Limited track record · 45 flights
Find United 2647 fares Opens this date on Aviasales#6 · SkyWest 5316 · sold as United Express, Delta Connection, American Eagle or Alaska
6:00 AM → 7:39 AM1h 39m nonstop
Local times, typical schedule. Last flown 2026-03-28.
85%
chance on time
- On time (history)
- 86%
- Cancelled
- 2.2%
- Avg arrival delay
- 21 min
- Arrived on time 86% of the time (44 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 78% on time; 6 to 9 PM: 54%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- Lands inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
Limited track record · 44 flights
Find 6:00 AM flight fares Opens this date on Aviasales#7 · SkyWest 6209 · sold as United Express, Delta Connection, American Eagle or Alaska
10:18 PM → 11:51 PM1h 33m nonstop
Local times, typical schedule. Last flown 2026-05-20.
84%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 77% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- Short track record (44 flights), so its score leans on the airline's record at this hour.
Limited track record · 44 flights
Find 10:18 PM flight fares Opens this date on Aviasales#8 · SkyWest 6510 · sold as United Express, Delta Connection, American Eagle or Alaska
10:38 PM → 12:09 AM1h 31m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 4653; its record covers all of them.
84%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 85% of the time (149 flights, Jun 2025 to May 2026).
- Never cancelled in 149 scheduled flights.
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
Moderate track record · 149 flights
Find 10:38 PM flight fares Opens this date on Aviasales#9 · United 233
5:27 PM → 6:57 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 83% of the time (143 flights, Jun 2025 to May 2026).
- Never cancelled in 143 scheduled flights.
- Departs inside LAX's trouble window: 53% of its 15 ground stops and delay programs started between 4 PM and 10 PM.
Moderate track record · 143 flights
Find United 233 fares Opens this date on Aviasales#10 · SkyWest 6431 · sold as United Express, Delta Connection, American Eagle or Alaska
5:45 PM → 7:20 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as SkyWest 3316; its record covers all of them.
81%
chance on time
- On time (history)
- 81%
- Cancelled
- 1.9%
- Avg arrival delay
- 10 min
- Arrived on time 81% of the time (104 flights, Jun 2025 to May 2026).
- Departs inside LAX's trouble window: 53% of its 15 ground stops and delay programs started between 4 PM and 10 PM.
Moderate track record · 104 flights
Find 5:45 PM flight 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)73%
2,614 flights · 75% on time as flown · 1.1% cancel
- United Airlines69%
3,250 flights · 69% on time as flown · 0.2% cancel
- Delta Air Lines66%
2,375 flights · 68% on time as flown · 1.5% cancel
- Alaska Airlines64%
507 flights · 53% on time as flown · 0.6% cancel
- Southwest Airlines62%
1,325 flights · 63% on time as flown · 0.4% cancel
- American Airlines60%
374 flights · 63% on time as flown · 0.4% cancel
- Frontier Airlines55%
387 flights · 54% on time as flown · 1.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM78%
2,262 flights · avg delay 13 min
- 9 AM to noon64%
1,771 flights · avg delay 21 min
- Noon to 3 PM71%
1,508 flights · avg delay 20 min
- 3 to 6 PM73%
1,915 flights · avg delay 17 min
- 6 to 9 PM54%
2,305 flights · avg delay 30 min
- After 9 PM70%
1,071 flights · avg delay 16 min
Best day: Tuesday (77%). Worst: Sunday (67%).
Smarter routing
Nearby airports that run more on time
LGB → OAK 89% chance on time
Long Beach International Airport to Oakland San Francisco Bay Airport · 1,649 flights a year · 28 mi from your airports · yours: 67%
LGB → SJC 87% chance on time
Long Beach International Airport to Norman Y. Mineta San Jose International Airport · 1,222 flights a year · 47 mi from your airports · yours: 67%
BUR → SJC 87% chance on time
Hollywood Burbank/Bob Hope Airport to Norman Y. Mineta San Jose International Airport · 2,218 flights a year · 48 mi from your airports · yours: 67%
LAX → SJC 87% chance on time
Los Angeles International Airport to Norman Y. Mineta San Jose International Airport · 4,400 flights a year · 30 mi from your airports · yours: 67%
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
- Air traffic control and airport volume50%
- Late-arriving aircraft27%
- Airline (crew, maintenance, boarding)22%
- Severe weather1%
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
LAX to SFO questions
- What time of day is best to fly LAX to SFO?
- Before 9 AM: 78% of flights arrived on time, against 54% for departures 6 to 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 LAX to SFO?
- SkyWest, with a season-adjusted 73% chance of operating and arriving on time over 2,614 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 LAX to SFO?
- May (60% on time); the best was January (78%), 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 LAX
- SFO to LAX (return)
- LAX to JFK 79%
- LAX to LAS 77%
- LAX to DEN 82%
- LAX to PHX 81%
- LAX to SEA 85%
- LAX to ORD 77%
- LAX to DFW 75%
- LAX to SMF 85%
- LAX to HNL 77%
- LAX to IAH 84%
- LAX to ATL 76%
- LAX to EWR 79%
Live status: FAA delays and ground stops