Airport month record
SANJUN
San Diego International in June 2026
- Departures
- 8,996
- Month
- June 2026
- National, same month
- 74.3%
- Carriers
- 8
Historical statistics for June 2026, not live status or a forecast for this year’s June. For today’s conditions at SAN, see live FAA status.
SAN in June sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 3 points worse than the national rate of 74.3%. The late ones land about 55 minutes behind schedule. That rests on 8,996 flights, of which Delta Air Lines flew 797 at 88.1% on time.
Delta Air Lines is the most reliable of the six carriers covered here at 88.1% on time across 797 flights.
Key figures
On time
71.1%
Arrivals under 15 minutes late, of 8,859 completed departures
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
1.00%
Nationally in June: 1.65%
Whole year
78.0%
SAN across all twelve months
These figures cover 8,996 departures from San Diego International in June 2026. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.
Against the year
June next to SAN's other months
Against SAN's own year, June ran 7 points worse than the twelve-month rate of 78.0%, which makes it the worst of the twelve months in the data.
| Month | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| July 2025 | 8,776 | 73.9% | 62 min | 1.32% | C |
| August 2025 | 8,406 | 76.7% | 58 min | 0.75% | B+ |
| September 2025 | 7,875 | 81.9% | 74 min | 1.37% | B |
| October 2025 | 8,687 | 79.0% | 63 min | 0.92% | B+ |
| November 2025 | 8,246 | 77.1% | 65 min | 2.81% | B |
| December 2025 | 8,228 | 75.4% | 63 min | 1.42% | B |
| January 2026 | 7,406 | 83.1% | 79 min | 2.71% | B |
| February 2026 | 7,008 | 84.0% | 64 min | 0.97% | B+ |
| March 2026 | 8,547 | 78.2% | 64 min | 1.03% | B |
| April 2026 | 8,505 | 80.8% | 54 min | 0.33% | B+ |
| May 2026 | 8,947 | 76.9% | 54 min | 0.66% | B+ |
| June 2026 (this page) | 8,996 | 71.1% | 55 min | 1.00% | C |
Departure window
The best time of day to leave SAN in June
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 29 points, against 28 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am1,392 flights86.3%
- 8am–11am1,833 flights80.9%
- 11am–2pm1,577 flights70.4%
- 2pm–5pm1,474 flights57.4%
- 5pm–8pm1,244 flights57.4%
- 8pm–5am1,476 flights70.4%
Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 57.4% on time, against 86.3% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 1,833 flights scheduled in it.
Across the week, Saturday is the strongest day at 79.3% on time and Thursday the weakest at 62.1%. 17 points is a smaller lever than departure hour, but it is free.
Carrier by carrier
Which airlines ran best at SAN in June
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 88.1% of the time; Southwest Airlines manages 59.8%. Sample sizes sit next to every figure, because a two-point gap across 3,560 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 3,560 | 59.8% | 50 min | 0.84% | D+ |
| SkyWest Airlines | 1,311 | 78.0% | 53 min | 0.92% | B+ |
| Alaska Airlines | 1,216 | 77.2% | 48 min | 0.99% | B+ |
| United Airlines | 928 | 76.8% | 60 min | 0.22% | B+ |
| American Airlines | 859 | 76.0% | 81 min | 2.21% | B |
| Delta Air Lines | 797 | 88.1% | 75 min | 0.88% | A+ |
| Frontier Airlinesthin sample | 179 | 65.9% | 65 min | 3.35% | C− |
| JetBlue Airwaysthin sample | 146 | 81.1% | 75 min | 1.37% | B |
The spread between Delta and Southwest is 28 points, wide enough that it should decide the booking. On a hundred trips that is 28 more arrivals inside the on-time window.
Route by route
Busiest routes out of SAN in June
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SAN to SFO · San Francisco | 618 | 38.8% | 57 min | 1.78% | F |
| SAN to DEN · Denver | 525 | 71.5% | 57 min | 0.57% | C+ |
| SAN to PHX · Phoenix | 507 | 68.7% | 54 min | 0.59% | C+ |
| SAN to SMF · Sacramento | 450 | 66.7% | 41 min | 0.44% | C+ |
| SAN to SJC · San Jose | 448 | 67.6% | 44 min | 0.00% | C+ |
| SAN to SEA · Seattle | 436 | 75.6% | 40 min | 1.15% | B |
| SAN to LAS · Las Vegas | 384 | 67.6% | 51 min | 2.34% | C |
| SAN to DFW · Dallas-Fort Worth | 381 | 71.3% | 79 min | 3.67% | C− |
| SAN to ORD · Chicago | 380 | 76.6% | 87 min | 1.05% | B |
| SAN to OAK · Oaklandthin sample | 291 | 65.4% | 49 min | 0.69% | C+ |
| SAN to SLC · Salt Lake Citythin sample | 254 | 82.1% | 56 min | 1.18% | B |
| SAN to AUS · Austinthin sample | 219 | 62.2% | 59 min | 0.91% | D+ |
| SAN to LAX · Los Angelesthin sample | 209 | 90.4% | 74 min | 0.00% | A+ |
| SAN to JFK · New Yorkthin sample | 207 | 82.7% | 125 min | 0.48% | B+ |
| SAN to BOS · Bostonthin sample | 203 | 78.2% | 63 min | 0.49% | B+ |
| SAN to ATL · Atlantathin sample | 178 | 90.3% | 62 min | 0.56% | A+ |
| SAN to PDX · Portlandthin sample | 151 | 67.8% | 40 min | 1.32% | C |
| SAN to HNL · Honoluluthin sample | 146 | 70.1% | 45 min | 1.37% | C |
| SAN to FAT · Fresnothin sample | 146 | 74.5% | 43 min | 0.68% | C+ |
| SAN to EWR · Newarkthin sample | 144 | 80.3% | 64 min | 0.69% | B+ |
| SAN to IAH · Houstonthin sample | 142 | 79.6% | 72 min | 0.00% | B+ |
| SAN to DAL · Dallasthin sample | 136 | 57.5% | 44 min | 1.47% | D |
| SAN to RNO · Renothin sample | 130 | 67.7% | 55 min | 2.31% | C |
| SAN to IAD · Washingtonthin sample | 120 | 92.5% | 31 min | 0.00% | A+ |
| SAN to CLT · Charlottethin sample | 120 | 76.5% | 63 min | 0.00% | B+ |
Delay causes
What held SAN up in June
One category carries most of the weight here. Late-arriving aircraft accounts for 52% of the 140,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 52%Late-arriving aircraft
- 24%Carrier
- 22%National Airspace System
- 2%Extreme weather
- 0%Security
52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 140,000 reported delay minutes here, that single category outweighs weather by 26 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 140,436 reported delay minutes.
Cancellations sit at 1.00% against a national 1.65%, which is ordinary. Diversions add another 0.52%.
8.4% of arrivals land an hour or more late, close to the national 9.7%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 55 minutes, which a normal layover absorbs.
What to do with this
Flying from SAN in June
For a June trip through SAN: plan on this being one of the airport's harder months. The 5am–8am departures held up best at 86.3% on time, and with 8.4% of arrivals an hour or more late, a connection here deserves more slack than the same trip in February would.
Related
Where to go next
- San Diego International (SAN), the whole year
- SAN in July73.9%
- SAN in August76.7%
- SAN in September81.9%
- SAN in October79.0%
- SAN in November77.1%
- SAN in December75.4%
- SAN in January83.1%
- SAN in February84.0%
- SAN in March78.2%
- SAN in April80.8%
- SAN in May76.9%
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.