SAN FRANCISCO, July 2, 2026, 16:02 (PDT)
- San Francisco International Airport reported 368 delays and five cancellations by late afternoon. The FAA said it was holding inbound flights with average delays of 42 minutes.
- Checkpoint wait times stayed low. SFO said general screening was 1-3 minutes and TSA PreCheck was 1-4 minutes at 3:50 p.m., suggesting the issue was airside, not in the lines.
- United Airlines Holdings NASDAQ:UAL is the biggest investor exposure here. United and United Express together ran 48.7% of SFO boardings in fiscal 2024-25.
San Francisco International Airport saw delays stack up in early July, but most flights still finished their routes. The runway and airspace pinch is pushing schedules off track instead of causing cancellations. For airline investors, that’s important: delays keep planes, crews, and gates stuck in place.
FlightAware reported 368 delays and five canceled flights at SFO on Thursday. The FAA put in place a traffic management program that delayed some inbound flights to San Francisco by about 42 minutes on average. SFO’s checkpoint site showed normal passenger traffic, with typical screening waits between one and three minutes, and TSA PreCheck lines taking one to four minutes.
| SFO stress measure | Latest reading | Investor read-through |
|---|---|---|
| Delays today | 368 | Flights and crews aren’t flowing as smoothly |
| Cancellations today | 5 | Finishing trips is less of a problem than staying on time |
| FAA average arrival delay | 42 minutes | Arrivals are where the logjam hits |
| Longest posted general TSA wait | 3 minutes | Security lines aren’t making the difference right now |
The San Francisco Chronicle’s live SFO tracker, last updated July 2, gathers flight data from SFO every five minutes and shows four hours back plus 12 hours of scheduled flights. It logs any delays of at least 15 minutes, matching the standard U.S. aviation cutoff.
Investors get more detail here than from just a single cancellation headline. The Chronicle reported average SFO flight delays jumped to about 20 minutes between April 1 and June 10, up from roughly five minutes last year. The portion of flights delayed at least 15 minutes increased to around 41% from 18%.
SFO’s exposure is tight. The airport’s own bond filing says United and United Express did 48.7% of fiscal 2024-25 enplanements. Alaska Air Group NYSE:ALK with partners had 9.5%, Delta Air Lines NYSE:DAL and its affiliates had 7.6%. United made up 25.5% of SFO’s operating revenue.
| Company | SFO exposure signal | Latest equity quote |
|---|---|---|
| United Airlines Holdings NASDAQ:UAL | Handles 48.7% of SFO’s enplanements and brings in 25.5% of its operating revenue | $133.32, off 1.3% |
| Alaska Air Group NYSE:ALK | Accounts for 9.5% of SFO enplanements | $51.09, off 0.3% |
| Delta Air Lines NYSE:DAL | Has 7.6% of SFO enplanements | $92.75, off 0.3% |
U.S. core equity markets shut down by the dateline. Nasdaq says its normal session wraps at 4 p.m. Eastern, with late trading until 8 p.m. The most recent airline stock quotes were posted after the bell.
SFO’s airside limit didn’t start with today’s weather. The FAA cut the airport’s arrival cap to 36 an hour from 54 after a March order, Reuters reported, as SFO works on its runways. The FAA also said it will stop side-by-side approaches on the parallel runways even in clear weather.
FAA spokesman Ian Gregor told the Associated Press the agency considers SFO’s parallel landings on runways just 750 feet apart in busy Bay Area skies “too dangerous.” Doug Yakel, an SFO spokesman, said about a quarter of incoming flights could be delayed at least 30 minutes. AP News
SFO closed Runway 1 Right on March 30 for its runway project, with work set to go through Oct. 2. Claudia Luquin, SFO director of project management, called it “fast-paced” and “highly sensitive” at an airport commission meeting, according to the Chronicle. San Francisco Chronicle
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