Route Reliability

Route reliability

San Diego (SAN) to Oakland (OAK): which airline is most on time?

On-time arrivals, cancellations and long delays for every airline that reported nonstop flights from San Diego, CA (SAN) to Oakland, CA (OAK), September 2025 to August 2026.

Historical performance Official DOT data through August 2026 · Not live flight status

San Diego, CAOakland, CA

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Three-letter airport codes, nonstop U.S. domestic flights. One direction at a time.

Route at a glance · September 2025 to August 2026

SAN to OAK

San Diego, CA to Oakland, CA

On time
72.1%vs 75.6% U.S. average Worse than average
Cancelled
1.0%vs 1.9% U.S. average Better than average
60+ min late
7.1%vs 8.1% U.S. average About average
Scheduled flights
3,290in 12 months3 airlines
Most reliable airline
SkyWest Airlines74.5% on time · 337 flights

On time less often than the U.S. average, with fewer cancellations.

Compared with all U.S. flights, September 2025 to August 2026. “About average” means within 1.5 points for on time, 0.3 for cancelled and 1 for 60+ minutes late.

Airlines on this route

Ranked by on-time arrival

Airlines from SAN to OAK, September 2025 to August 2026. Rates are shares of all scheduled flights.
Airline On time Cancelled 60+ min late Avg delay when late Diverted Flights
1. SkyWest Airlines Operating carrier; sold as United Express, Delta Connection, American Eagle, Alaska Most reliable 74.5% 1.5% 6.5% 52 min 0.0% 337
2. Southwest Airlines 71.7% 1.0% 7.2% 49 min 0.0% 2,933
Spirit Airlines Insufficient sample (fewer than 50 flights) 20

On time = arrived within 15 minutes of schedule. Avg delay when late = average arrival delay of flights 15+ minutes late. "Most reliable" needs at least 300 flights in 12 months. Tap a heading to sort.

What this means

SkyWest Airlines has the strongest record on this route.

  • SkyWest Airlines had the best on-time record from San Diego (SAN) to Oakland (OAK): 74.5% of its 337 scheduled flights arrived within 15 minutes of schedule, compared with 71.7% for Southwest Airlines.
  • Spirit Airlines also flew this route but with fewer than 50 reported flights, too few to rate.
  • 1.0% of flights on this route were cancelled (about 1 in 100), 0.9 points lower than the U.S. average of 1.9%.
  • 7.1% of flights, about 1 in 14, arrived an hour or more late. When a flight was late (15+ minutes), the average arrival delay was 50 min.
  • Overall, 72.1% of flights on this route arrived on time, 3.5 points lower than the U.S. average of 75.6%.
  • Over the last 3 years, January was the most reliable month on this route (84.0% on time) and June the least reliable (65.3%).
  • Cancellations peaked in December, when 2.3% of flights were cancelled.
  • Flights scheduled to depart 6 am to 7 am were the most punctual (97.2% on time); flights scheduled to depart 5 pm to 6 pm were the least (46.4%).
  • In the other direction, Oakland (OAK) to San Diego (SAN), 62.0% of flights were on time and 1.0% were cancelled. Compare airlines OAK to SAN.

Best and worst months to fly SAN to OAK

Jan 84.0%
Feb 81.2%
Mar 80.3%
Apr 78.4%
May 74.1%
Jun 65.3%
Jul 71.6%
Aug 70.1%
Sep 76.5%
Oct 72.3%
Nov 80.4%
Dec 75.7%
Share of scheduled flights on time 12-month average 72.1%
All airlines combined, by calendar month, September 2023 to August 2026 (3 years pooled). Scale starts at zero.
Show as table
PeriodOn timeFlights
January 84.0% 754
February 81.2% 707
March 80.3% 792
April 78.4% 829
May 74.1% 923
June 65.3% 871
July 71.6% 881
August 70.1% 957
September 76.5% 909
October 72.3% 922
November 80.4% 873
December 75.7% 875

Month by month, last 12 months

Sep 73.4%
Oct 71.2%
Nov 72.3%
Dec 69.5%
Jan 82.4%
Feb 81.8%
Mar 80.8%
Apr 75.0%
May 68.2%
Jun 64.9%
Jul 73.3%
Aug 62.6%
Share of scheduled flights on time U.S. average 75.6%
All airlines combined, September 2025 to August 2026. Scale starts at zero.
Show as table
PeriodOn timeFlights
Sep 2025 73.4% 274
Oct 2025 71.2% 271
Nov 2025 72.3% 260
Dec 2025 69.5% 262
Jan 2026 82.4% 222
Feb 2026 81.8% 220
Mar 2026 80.8% 229
Apr 2026 75.0% 260
May 2026 68.2% 336
Jun 2026 64.9% 291
Jul 2026 73.3% 296
Aug 2026 62.6% 369

Best and worst departure times

6a 97.2%
7a 96.2%
8a 94.0%
9a 81.6%
10a 80.0%
11a 80.1%
12p 66.5%
1p 72.2%
2p 61.7%
3p 67.4%
4p 61.4%
5p 46.4%
6p 63.8%
7p 62.6%
8p 54.5%
9p 47.6%
10p 73.3%
Share of scheduled flights on time
By scheduled local departure hour at SAN, September 2025 to August 2026. Hours with no scheduled flights are omitted. Scale starts at zero.
Show as table
PeriodOn timeFlights
Departing 6 am to 7 am 97.2% 177
Departing 7 am to 8 am 96.2% 208
Departing 8 am to 9 am 94.0% 318
Departing 9 am to 10 am 81.6% 174
Departing 10 am to 11 am 80.0% 185
Departing 11 am to noon 80.1% 171
Departing noon to 1 pm 66.5% 209
Departing 1 pm to 2 pm 72.2% 248
Departing 2 pm to 3 pm 61.7% 230
Departing 3 pm to 4 pm 67.4% 181
Departing 4 pm to 5 pm 61.4% 251
Departing 5 pm to 6 pm 46.4% 140
Departing 6 pm to 7 pm 63.8% 210
Departing 7 pm to 8 pm 62.6% 206
Departing 8 pm to 9 pm 54.5% 198
Departing 9 pm to 10 pm 47.6% 124
Departing 10 pm to 11 pm 73.3% 60
Woman at an airport window watching a plane take off
Photo: Depositphotos (licensed stock, illustrative only). Credits

Sources & data dates

Source
U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
Period
September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
Data through
August 2026
Processed
2026-11-03
Scope
Nonstop scheduled flights from San Diego, CA (SAN) to Oakland, CA (OAK), one direction. Airlines that report to the DOT only.
Method
Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.

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