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Route Reliability

Boston → San Diego

BOS–SAN · 2,588 miles · Boston Logan International Airport to San Diego International Airport

79
Usually Fine
WanderNerd Reliability Score
79%
Arrive within 15 minutes
0 min
Average arrival delay
1.3%
Cancelled
1,787
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.JetBlue Airways87%915 flights
  2. 2.Alaska Airlines71%508 flights
  3. 3.Delta Air Lines71%364 flights

What the data says

Morning-you made the right choice.

BOS–SAN flights departing between 9 AM–12 PM arrived on time 89% of the time, versus 53% between 6–9 PM.

Friday is doing you no favors.

BOS–SAN flights arrived on time 84% of the time on Thursdays. On Fridays: 75%.

JetBlue Airways has a clear lead on this route.

JetBlue Airways arrived on time 87% of the time on this route; Delta Air Lines managed 71%.

Ticking up lately.

BOS–SAN flights arrived on time 81% of the time over the last three months in the data, compared with 75% 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
  • Mon80%(260 flights)
  • Tue80%(247 flights)
  • Wed80%(246 flights)
  • Thu84%(256 flights)
  • Fri75%(266 flights)
  • Sat79%(203 flights)
  • Sun79%(272 flights)
On-time by departure window
  • 6–9 AM88%(444 flights)
  • 9 AM–12 PM89%(278 flights)
  • 3–6 PM74%(998 flights)
  • 6–9 PM53%(30 flights)
On-time trend by month
83%
May

Jun 84% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202584%172
July 202575%179
August 202582%175
September 202574%130
October 202579%159
November 202584%136
December 202578%128
January 202672%111
February 202676%104
March 202683%149
April 202679%144
May 202683%163

Keep nerding

Based on 1,787 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.