| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Apr 20 | SAN | SFO | 21:02 | 22:11 |
Delayed
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| Apr 19 | SAN | SFO | 21:33 | 22:45 |
Delayed
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| Apr 17 | SAN | SFO | 21:05 | 22:18 |
Delayed
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| Apr 16 | SAN | SFO | 21:34 | 22:41 |
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| Apr 13 | SAN | SFO | 20:42 | 22:10 |
Delayed
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| Apr 12 | SAN | SFO | 21:42 | 22:58 |
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| Apr 10 | SAN | SFO | 21:17 | 22:28 |
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| Apr 09 | SAN | SFO | 21:00 | 22:07 |
Delayed
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| Apr 06 | SAN | SFO | 19:52 | 21:24 |
Landed
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| Apr 05 | SAN | SFO | 21:02 | 22:08 |
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Alaska Airlines Flight AS2121 connects San Diego, United States to San Francisco, United States, taking off from San Diego International Airport SAN and landing at San Francisco International Airport SFO.
How long is the AS2121 flight from San Diego to San Francisco?
The average flight time from San Diego to San Francisco is 1 hour and 14 minutes. The flight distance is 719 km / 447 miles and the average flight speed is 589 km/h / 366 mph.
What is the On-Time Performance (OTP) of Alaska Airlines Flight AS2121 San Diego to San Francisco?
The Airportia On-Time Performance Rating for Alaska Airlines Flight AS2121 is 3.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight AS2121 arriving at?
Flight AS2121 arrives at San Francisco International Airport (SFO) Terminal 1.
When was the latest AS2121 flight?
The latest flight took off on Tuesday, April 21st, 2026 with the flight status being En-Route on 22:11.
How else can the flight AS2121 be referenced as?
This Alaska Airlines flight can also be referenced as ASA2121, AS 2121, ASA 2121.
How often is flight AS2121 delayed?
On average, 100% of all AS2121 flights are delayed. The average delay is 69 minutes.
Can I get compensation for my delayed or cancelled AS2121 flight or baggage issues?
If your AS2121 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our AS2121 Flight Tracker above for more details.
Flight AS2121 is code-shared by 4 airlines using the flight numbers AA9403, CX7929, FJ5839, HA6540
Other flights departing from San Diego SAN: AS3022, F91902, AS2111, AS3016
Other flights arriving at San Francisco SFO: AS114, UA2066, AS690, UA2059
All flights connecting San Diego SAN to San Francisco SFO.