Route guide

San Francisco to San Diego (SFO-SAN): Nonstop Upgrade & Award Space

Alaska Airlines, Inc., United Airlines, American Airlines, Frontier Airlines, and Southwest Airlines fly nonstop between San Francisco (SFO) and San Diego (SAN), roughly 126 times a week. Because so many carriers compete on this route, premium seats turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every SFO to SAN departure, so you know which flights have space before you book.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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126
Nonstop flights a week
447 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every SFO to SAN departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for San Francisco to San Diego to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each SFO to SAN departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SFO to SAN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying San Francisco to San Diego nonstop

Carriers operating SFO to SAN nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • Alaska Airlines, Inc.
  • United Airlines
  • American Airlines
  • Frontier Airlines
  • Southwest Airlines
See SFO to SAN on the interactive map →

Frequently asked questions about SFO to SAN

How far is San Diego from San Francisco?
SFO to SAN covers about 447 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from SFO to SAN?
Alaska Airlines, Inc., United Airlines, American Airlines, Frontier Airlines, and Southwest Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on all five of them.
How many flights a week are there from SFO to SAN?
About 126 nonstop flights a week run between San Francisco and San Diego in the current schedule, operated by Alaska Airlines, Inc., United Airlines, American Airlines, Frontier Airlines, and Southwest Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on SFO to SAN?
Open the SFO to SAN calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the San Francisco to San Diego route, and 2LNR will notify you when space opens. It's free to start.

Never miss SFO to SAN upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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