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Route on-time record

PHX to SFO: most on-time flights and the best time to fly

Phoenix (Phoenix Sky Harbor International Airport) to San Francisco (San Francisco International Airport). 4,625 nonstop flights in Jun 2025 to May 2026, 71% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was United 1944 at 3:20 PM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

PHX → SFO

Phoenix to San Francisco: 4,625 nonstop flights a year

On time (12 months)

71%

Cancelled

0.6%

avg delay 20 min

Best time to leave

Before 9 AM

79% on time vs 54% after 9 PM

Most reliable airline

United

76% chance on time

Check PHX to SFO fares

Lowest nonstop fare seen in the next two months: $45 (Frontier 1191 on 2026-10-27). 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. #1 · United 1944

    3:20 PM → 5:37 PM2h 17m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    87%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (24 flights, Jun 2025 to May 2026).
    • Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (24 flights), so its score leans on the airline's record at this hour.

    Limited track record · 24 flights

    Find United 1944 fares Opens this date on Aviasales

  2. #2 · SkyWest 5341 · sold as United Express, Delta Connection, American Eagle or Alaska

    10:45 AM → 1:12 PM2h 27m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    83%

    chance on time

    On time (history)
    96%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 96% of the time (24 flights, Jun 2025 to May 2026).
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
    • Short track record (24 flights), so its score leans on the airline's record at this hour.

    Limited track record · 24 flights

    Find 10:45 AM flight fares Opens this date on Aviasales

  3. #3 · SkyWest 5401 · sold as United Express, Delta Connection, American Eagle or Alaska

    6:08 AM → 8:38 AM2h 30m nonstop

    Local times, typical schedule. Last flown 2026-03-27.

    81%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    15 min
    • Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 79% on time; After 9 PM: 54%).
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 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 · 11 flights

    Find 6:08 AM flight fares Opens this date on Aviasales

  4. #4 · SkyWest 6276 · sold as United Express, Delta Connection, American Eagle or Alaska

    7:22 AM → 9:55 AM2h 33m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    80%

    chance on time

    On time (history)
    86%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 86% of the time (153 flights, Jun 2025 to May 2026).
    • Never cancelled in 153 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 79% on time; After 9 PM: 54%).
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).

    Moderate track record · 153 flights

    Find 7:22 AM flight fares Opens this date on Aviasales

  5. #5 · United 453

    3:42 PM → 5:48 PM2h 06m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    79%

    chance on time

    On time (history)
    65%
    Cancelled
    0.0%
    Avg arrival delay
    20 min
    • Arrived on time 65% of the time (43 flights, Jun 2025 to May 2026).
    • Never cancelled in 43 scheduled flights.
    • Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (43 flights), so its score leans on the airline's record at this hour.

    Limited track record · 43 flights

    Find United 453 fares Opens this date on Aviasales

  6. #6 · United 2209

    7:10 AM → 9:18 AM2h 09m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    78%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 73% of the time (142 flights, Jun 2025 to May 2026).
    • Never cancelled in 142 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 79% on time; After 9 PM: 54%).
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).

    Moderate track record · 142 flights

    Find United 2209 fares Opens this date on Aviasales

  7. #7 · American 2423

    10:08 AM → 12:22 PM2h 14m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    77%

    chance on time

    On time (history)
    78%
    Cancelled
    0.4%
    Avg arrival delay
    16 min
    • Arrived on time 78% of the time (264 flights, Jun 2025 to May 2026).
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 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 · 264 flights

    Find American 2423 fares Opens this date on Aviasales

  8. #8 · Frontier 3549

    5:09 PM → 7:30 PM2h 21m nonstop

    Local times, typical schedule. Last flown 2026-05-03.

    75%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 82% of the time (74 flights, Jun 2025 to May 2026).
    • Never cancelled in 74 scheduled flights.
    • Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.

    Moderate track record · 74 flights

    Find Frontier 3549 fares Opens this date on Aviasales

  9. #9 · United 2256

    9:59 AM → 12:15 PM2h 16m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    75%

    chance on time

    On time (history)
    86%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 86% of the time (22 flights, Jun 2025 to May 2026).
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 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.
    • Short track record (22 flights), so its score leans on the airline's record at this hour.

    Limited track record · 22 flights

    Find United 2256 fares Opens this date on Aviasales

  10. #10 · American 2860

    2:05 PM → 4:06 PM2h 01m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    74%

    chance on time

    On time (history)
    75%
    Cancelled
    1.9%
    Avg arrival delay
    19 min
    • Arrived on time 75% of the time (104 flights, Jun 2025 to May 2026).
    • Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
    • 64% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 104 flights

    Find American 2860 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines76%

    1,454 flights · 76% on time as flown · 0.6% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)73%

    518 flights · 73% on time as flown · 0.3% cancel

  • Frontier Airlines70%

    254 flights · 71% on time as flown · 1.2% cancel

  • American Airlines70%

    1,319 flights · 70% on time as flown · 0.9% cancel

  • Southwest Airlines63%

    1,079 flights · 63% on time as flown · 0.3% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM79%

    1,110 flights · avg delay 13 min

  • 9 AM to noon73%

    1,005 flights · avg delay 17 min

  • Noon to 3 PM67%

    459 flights · avg delay 22 min

  • 3 to 6 PM71%

    924 flights · avg delay 21 min

  • 6 to 9 PM64%

    778 flights · avg delay 26 min

  • After 9 PM54%

    349 flights · avg delay 31 min

Best day: Tuesday (79%). Worst: Monday (68%).

Smarter routing

Nearby airports that run more on time

  • PHX → SJC 79% chance on time

    Phoenix Sky Harbor International Airport to Norman Y. Mineta San Jose International Airport · 3,038 flights a year · 30 mi from your airports · yours: 70%

    Rank flightsFares

  • PHX → OAK 76% chance on time

    Phoenix Sky Harbor International Airport to Oakland San Francisco Bay Airport · 1,948 flights a year · 11 mi from your airports · yours: 70%

    Rank flightsFares

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.

J
77
F
69
M
69
A
62
M
57
J
71
J
71
A
77
S
81
O
78
N
78
D
76

What delays this route

  • Air traffic control and airport volume37%
  • Late-arriving aircraft35%
  • Airline (crew, maintenance, boarding)26%
  • 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

PHX to SFO questions

What time of day is best to fly PHX to SFO?
Before 9 AM: 79% of flights arrived on time, against 54% for departures after 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 PHX to SFO?
United, with a season-adjusted 76% chance of operating and arriving on time over 1,454 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 PHX to SFO?
May (57% on time); the best was September (81%), 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 PHX

Live status: FAA delays and ground stops