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Route Reliability

Phoenix → San Diego

PHX–SAN · 304 miles · Phoenix Sky Harbor International Airport to San Diego International Airport

76
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
10 min
Average arrival delay
1.4%
Cancelled
6,289
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.Frontier Airlines77%414 flights
  2. 2.American Airlines76%1,672 flights
  3. 3.Southwest Airlines75%3,189 flights
  4. 4.Alaska Airlines73%1,014 flights

What the data says

Morning-you made the right choice.

PHX–SAN flights departing between 6–9 AM arrived on time 90% of the time, versus 55% between 9 PM–12 AM.

Friday is doing you no favors.

PHX–SAN flights arrived on time 83% of the time on Saturdays. On Fridays: 69%.

Frontier Airlines has a slight edge here.

Frontier Airlines arrived on time 77% of the time on this route; Alaska Airlines managed 73%.

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
  • Mon72%(948 flights)
  • Tue82%(834 flights)
  • Wed81%(846 flights)
  • Thu70%(944 flights)
  • Fri69%(947 flights)
  • Sat83%(719 flights)
  • Sun71%(948 flights)
On-time by departure window
  • 12–3 AM—(1 flights)
  • 3–6 AM—(2 flights)
  • 6–9 AM90%(1419 flights)
  • 9 AM–12 PM77%(1227 flights)
  • 12–3 PM73%(953 flights)
  • 3–6 PM71%(1126 flights)
  • 6–9 PM65%(1168 flights)
  • 9 PM–12 AM55%(290 flights)
On-time trend by month
69%
May

Jun 73% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%450
July 202575%468
August 202580%472
September 202579%489
October 202576%537
November 202568%511
December 202570%544
January 202678%489
February 202679%497
March 202677%585
April 202675%565
May 202669%579

Keep nerding

Based on 6,289 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.