Skip to content

prices we've seen · United States fares · USD

Flights from San Diego (SAN) to San Francisco (SFO)

  • One way from $19
  • Round trip from $151
  • Nonstop on 4 of 4 dates
  • Fastest 1h 47m
  • 2 airlines

The cheapest one-way fare from San Diego (SAN) to San Francisco (SFO) we have seen is $19 USD, departing Dec 9, 2026 (seen Nov 10, 2026): Frontier F9 3383, nonstop, 1h 55m.

Search flights

Depart
More options
See more dates →

Leave your email and we'll write on any day the fare is at or under your price — at most once a day. We'll send a link to confirm your address first. Without an email, it's still saved in My watches.

Prices are the fare alone; the seller shows the bag and fare rules.

Cheapest by month

Checked Nov 11

Pick a month to search the day its cheapest fare leaves.

  1. Nov 2026$122
  2. Dec 2026$19

Cheapest days to fly one wayCheapest round trips

Each day's cheapest fare we've seen, nonstop and with stops. Cheapest first.

We may earn a commission from the seller · How we rank

  1. WedDec 9

    19:51

    1h 55mNonstop

    21:46

    Cheapest$19 USD

    Frontier F9 3383 · seen Nov 10

    Go to seller — $19

  2. MonDec 28

    06:36

    17h 59m1 stop

    00:35+1

    $97 USD

    Frontier F9 2818 · seen Nov 7

    Go to seller — $97

  3. MonDec 28

    07:04

    1h 48mNonstop

    08:52

    $100 USD

    Alaska Airlines AS 597 · seen Nov 7

    Go to seller — $100

  4. TueNov 24

    08:50

    5h 44m1 stop

    14:34

    $122 USD

    Frontier F9 1326 · seen Nov 6

    Go to seller — $122

  5. SunNov 22

    16:29

    1h 47mNonstop

    18:16

    $137 USD

    Frontier F9 3381 · seen Nov 7

    Go to seller — $137

  6. TueNov 24

    16:29

    1h 47mNonstop

    18:16

    $153 USD

    Frontier F9 3381 · seen Nov 6

    Go to seller — $153

The cheapest round trips we've seen on this route, on any dates, cheapest first.

We may earn a commission from the seller · How we rank

  1. 2 nightsDec 13–15

    19:51

    21:46

    Cheapest$61 USD

    Frontier F9 3383 · Nonstop · 3h 38m in all, both ways · seen Nov 5

    Go to seller — $61

  2. 7 nightsDec 13–20

    19:51

    21:46

    $151 USD

    Frontier F9 3383 · Nonstop · 3h 36m in all, both ways · seen Nov 10

    Go to seller — $151

  3. 5 nightsNov 23–28

    08:50

    SFO

    $250 USD

    Frontier F9 1466 · 1 stop · 7h 25m in all, both ways · seen Nov 7

    Go to seller — $250

  4. 5 nightsNov 23–28

    20:11

    22:06

    $262 USD

    Frontier F9 3383 · Nonstop · 3h 36m in all, both ways · seen Nov 7

    Go to seller — $262

Compare other routes

Compared with San Diego → San Francisco: $19 one way (Dec 9).

The way back

Other places from San Diego

Every route from San Diego →

To San Francisco from other cities

Every route to San Francisco →

Airlines seen on this route

  • Alaska Airlines
  • Frontier

Marketing carriers; the operating airline is shown by the seller.

San Diego to San Francisco in numbers

  • By month, Dec 2026 is the cheapest we've seen at $19 USD and Nov 2026 the most expensive at $122 USD — a spread of 542%.
  • Nonstop fares were seen on 4 of the 4 departure dates; carriers seen: Alaska Airlines, Frontier.
  • SAN serves San Diego, United States; SFO serves San Francisco, United States.
  • San Diego and San Francisco keep the same clock.

Questions

What is the cheapest fare from San Diego (SAN) to San Francisco (SFO)?

The cheapest one-way fare from San Diego (SAN) to San Francisco (SFO) we have seen is $19 USD, departing Dec 9, 2026 (seen Nov 10, 2026): Frontier F9 3383, nonstop, 1h 55m.

Is there a nonstop flight from San Diego (SAN) to San Francisco (SFO)?

Nonstop fares were seen on 4 of the 4 departure dates; carriers seen: Alaska Airlines, Frontier.

Which month is cheapest to fly from San Diego (SAN) to San Francisco (SFO)?

By month, Dec 2026 is the cheapest we've seen at $19 USD and Nov 2026 the most expensive at $122 USD — a spread of 542%.

How old is this price?

It is the cheapest fare we've seen for that date; the date beside it is the day it was seen, or our last check. We look again at least once a day for the routes people search, and stop showing a route's prices two days after our last look. The seller's page shows the price right now.

How does a2bflight rank results?

By price and duration only; commission never enters the order. Cheapest means cheapest among the fares we've seen for this route. A click that books may earn a2bflight a commission from the seller; the price you see is the seller's own. See how we rank and what we keep.