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Route Reliability

San Francisco → Phoenix

SFO–PHX · 651 miles · San Francisco International Airport to Phoenix Sky Harbor International Airport

79
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
12 min
Average arrival delay
0.9%
Cancelled
4,701
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines83%1,570 flights
  2. 2.American Airlines81%1,673 flights
  3. 3.Southwest Airlines64%1,079 flights
  4. 4.Alaska Airlines63%125 flights
  5. 5.Frontier Airlines58%254 flights

What the data says

Morning-you made the right choice.

SFO–PHX flights departing between 3–6 AM arrived on time 96% of the time, versus 69% between 3–6 PM.

Skip Monday if you can.

SFO–PHX flights arrived on time 82% of the time on Saturdays. On Mondays: 71%.

United Airlines has a clear lead on this route.

United Airlines arrived on time 83% of the time on this route; Frontier Airlines managed 58%.

Slipping a little lately.

SFO–PHX flights arrived on time 75% of the time over the last three months in the data, compared with 80% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon71%(695 flights)
  • Tue81%(595 flights)
  • Wed79%(611 flights)
  • Thu74%(702 flights)
  • Fri74%(691 flights)
  • Sat82%(621 flights)
  • Sun73%(733 flights)
On-time by departure window
  • 3–6 AM96%(296 flights)
  • 6–9 AM91%(896 flights)
  • 9 AM–12 PM71%(820 flights)
  • 12–3 PM69%(706 flights)
  • 3–6 PM69%(965 flights)
  • 6–9 PM73%(768 flights)
  • 9 PM–12 AM73%(197 flights)
On-time trend by month
69%
May

Jun 80% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%361
July 202572%353
August 202579%336
September 202578%334
October 202573%371
November 202568%393
December 202576%424
January 202682%382
February 202681%382
March 202684%469
April 202670%427
May 202669%416

Same trip, other airports

Keep nerding

Based on 4,701 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.