Route on-time record
MIA to SFO: most on-time flights and the best time to fly
Miami (Miami International Airport) to San Francisco (San Francisco International Airport). 1,701 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was United 1257 at 7:15 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MIA → SFO
Miami to San Francisco: 1,701 nonstop flights a year
On time (12 months)
74%
Cancelled
0.6%
avg delay 18 min
Best time to leave
Before 9 AM
85% on time vs 65% 6 to 9 PM
Most reliable airline
United
73% chance on time
Lowest nonstop fare seen in the next two months: $194 (American 2757 on 2026-11-05). 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 · United 1257
7:15 AM → 10:46 AM6h 31m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 85% of the time (87 flights, Jun 2025 to May 2026).
- Never cancelled in 87 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 65%).
- Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
Moderate track record · 87 flights
Find United 1257 fares Opens this date on Aviasales#2 · American 2565
7:45 AM → 10:54 AM6h 09m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 3117; its record covers all of them.
79%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 25 min
- Arrived on time 73% of the time (73 flights, Jun 2025 to May 2026).
- Never cancelled in 73 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 65%).
- Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
Moderate track record · 73 flights
Find American 2565 fares Opens this date on Aviasales#3 · American 2426
7:40 PM → 11:01 PM6h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 2799; its record covers all of them.
67%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.5%
- Avg arrival delay
- 22 min
- Arrived on time 64% of the time (218 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 65% on time; Before 9 AM: 85%).
- Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
Strong track record · 218 flights
Find American 2426 fares Opens this date on Aviasales#4 · American 2035
5:37 PM → 8:56 PM6h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31.
63%
chance on time
- On time (history)
- 58%
- Cancelled
- 0.0%
- Avg arrival delay
- 30 min
- Arrived on time 58% of the time (175 flights, Jun 2025 to May 2026).
- Never cancelled in 176 scheduled flights.
- Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 175 flights
Find American 2035 fares Opens this date on Aviasales#5 · United 1511
6:17 PM → 9:50 PM6h 33m nonstop
Local times, typical schedule. Last flown 2026-05-20.
59%
chance on time
- On time (history)
- 42%
- Cancelled
- 0.0%
- Avg arrival delay
- 33 min
- Arrived on time 42% of the time (45 flights, Jun 2025 to May 2026).
- Never cancelled in 46 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 65% on time; Before 9 AM: 85%).
- Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 45 flights
Find United 1511 fares Opens this date on Aviasales#6 · United 2810
6:35 PM → 9:41 PM6h 06m nonstop
Local times, typical schedule. Last flown 2026-05-31.
58%
chance on time
- On time (history)
- 11%
- Cancelled
- 0.0%
- Avg arrival delay
- 56 min
- Arrived on time 11% of the time (9 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 65% on time; Before 9 AM: 85%).
- Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 9 flights
Find United 2810 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines73%
628 flights · 73% on time as flown · 0.3% cancel
- American Airlines73%
1,073 flights · 74% on time as flown · 0.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM85%
612 flights · avg delay 10 min
- 3 to 6 PM68%
314 flights · avg delay 23 min
- 6 to 9 PM65%
742 flights · avg delay 24 min
Best day: Tuesday (77%). Worst: Sunday (65%).
Smarter routing
Nearby airports that run more on time
FLL → SFO 80% chance on time
Fort Lauderdale Hollywood International Airport to San Francisco International Airport · 1,265 flights a year · 21 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
- Air traffic control and airport volume32%
- Late-arriving aircraft32%
- Airline (crew, maintenance, boarding)31%
- Severe weather4%
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
MIA to SFO questions
- What time of day is best to fly MIA to SFO?
- Before 9 AM: 85% of flights arrived on time, against 65% 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 MIA to SFO?
- United, with a season-adjusted 73% chance of operating and arriving on time over 628 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 MIA to SFO?
- May (63% on time); the best was October (80%), 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 MIA
- SFO to MIA (return)
- MIA to ATL 73%
- MIA to LGA 67%
- MIA to DFW 73%
- MIA to JFK 71%
- MIA to ORD 71%
- MIA to EWR 72%
- MIA to DCA 75%
- MIA to MCO 72%
- MIA to IAH 76%
- MIA to CLT 78%
- MIA to BOS 69%
- MIA to LAX 75%
Most on-time flights from MIA on every route →
Live status: FAA delays and ground stops