Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 2248 · United Airlines

San Francisco → Newark (SFO–EWR)83% of its flights flew this route. The rest (TPA–SFO, ONT–SFO) are included in these numbers.

58
A Little Dicey
WanderNerd Reliability Score
65%
Arrive within 15 minutes
20 min
Average arrival delay
2.1%
Cancelled
0 min
Median arrival delay

Based on 439 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

UA 2248 departing between 3–6 PM arrived on time 77% of the time, versus 61% between 12–3 PM.

Sunday scaries are real for this one.

UA 2248 arrived on time 73% of the time on Saturdays and just 57% on Sundays. That gap is worth planning around.

Lagging the SFO–EWR route.

UA 2248 arrived on time 65% of the time, versus 77% across the SFO–EWR route.

Lagging the United Airlines network.

UA 2248 arrived on time 65% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon61%(61 flights)
  • Tue71%(62 flights)
  • Wed60%(62 flights)
  • Thu65%(62 flights)
  • Fri68%(62 flights)
  • Sat73%(59 flights)
  • Sun57%(61 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM69%(73 flights)
  • 12–3 PM61%(293 flights)
  • 3–6 PM77%(62 flights)
On-time trend by month
73%
May

Jun 50% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202550%30
July 202555%29
August 202567%30
September 202569%29
October 202567%30
November 202560%30
December 202548%31
January 202663%30
February 202670%43
March 202679%61
April 202663%56
May 202673%30
Departures on time
60%
Diverted
0.2%
Flights flown
429
Months covered
12

Same route, other flights

Keep nerding

Based on 439 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.