| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| May 20 | ONT | SFO | 13:37 | 14:36 |
Landed
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| May 19 | ONT | SFO | 13:55 | 14:56 |
Landed
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| May 18 | ONT | SFO | 14:31 | 15:31 |
Landed Late
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| May 17 | ONT | SFO | 14:06 | 15:20 |
Landed Late
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| May 16 | ONT | SFO | 14:08 | 15:16 |
Landed Late
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| May 15 | ONT | SFO | 13:40 | 14:49 |
Landed
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| May 14 | ONT | SFO | 15:32 | 16:30 |
Delayed
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| May 13 | ONT | SFO | 13:43 | 14:54 |
Landed
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| May 12 | ONT | SFO | 13:54 | 14:53 |
Landed
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| May 11 | ONT | SFO | 13:54 | 14:50 |
Landed
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United Airlines Flight UA1503 connects Ontario, United States to San Francisco, United States, taking off from Ontario International Airport ONT and landing at San Francisco International Airport SFO.
How long is the UA1503 flight from Ontario to San Francisco?
The average flight time from Ontario to San Francisco is 1 hour and 3 minutes. The flight distance is 585 km / 363 miles and the average flight speed is 557 km/h / 346 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA1503 Ontario to San Francisco?
The Airportia On-Time Performance Rating for United Airlines Flight UA1503 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA1503 arriving at?
Flight UA1503 arrives at San Francisco International Airport (SFO) Terminal 2.
When was the latest UA1503 flight?
The latest flight took off on Wednesday, May 20th, 2026 with the flight status being Landed on 14:36.
How else can the flight UA1503 be referenced as?
This United Airlines flight can also be referenced as UAL1503, UA 1503, UAL 1503.
How often is flight UA1503 delayed?
On average, 40% of all UA1503 flights are delayed. The average delay is 40 minutes.
Can I get compensation for my delayed or cancelled UA1503 flight or baggage issues?
If your UA1503 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 UA1503 Flight Tracker above for more details.
Flight UA1503 is code-shared by 3 airlines using the flight numbers AC4015, CM1360, EK6212
Other flights departing from Ontario ONT: WN3078, AA2462, 8C3337, AS2614
Other flights arriving at San Francisco SFO: UA1718, UA691, UA285, UA1430
All flights connecting Ontario ONT to San Francisco SFO.