UA1503 United Airlines - Flight Status
Below, you can find details about United Airlines flight UA1503, which currently operates between the airports of Ontario - Ontario International Airport (Airport Code ONT) and San Francisco - San Francisco International Airport (Airport Code SFO).
This flight data pertains specifically to the flight's details for Wednesday, May 20, 2026.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA1503
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA1503
UA1503 On Time performance:
67
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays Flight Status
UA1503 United Airlines from Ontario
Scheduled - On-time
Flight Status for Wednesday May 20, 2026
This flight was also scheduled for Yesterday (May 19, 2026). See it here
Scheduled - On-time
Flight Status for Wednesday May 20, 2026
Departure
Ontario (ONT)
May 20, 2026
Ontario International Airport
Estimated Departure Time:
01:30 pm
Terminal:
2
Gate:
201
Scheduled Departure Time: 01:30 pm
Arrival
San Francisco (SFO)
May 20, 2026
San Francisco International Airport
Estimated Arrival Time:
03:00 pm
Terminal:
2
Gate:
D9
Scheduled Arrival Time: 03:00 pm
Baggage: D2
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.airport-sfo.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.
Codeshare Flights
This flight is shared with other airlines, this means that these other flights are the same:
- AC4015 - Air Canada
- CM1360 - Copa Airlines
- EK6212 - Emirates
Additional Information
Which is the frequency of flight UA1503?
The flight UA1503 is scheduled to flight on daily basis.
Which is the distance of flight UA1503?
The distance between the two airports is 364 miles.
Which is the flight time of flight UA1503?
The scheduled flight time gate to gate is: 01:30 hours.
The real flight time gate to gate on average is: 01:29 hours.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
The flight UA1503 is scheduled to flight on daily basis.
Which is the distance of flight UA1503?
The distance between the two airports is 364 miles.
Which is the flight time of flight UA1503?
The scheduled flight time gate to gate is: 01:30 hours.
The real flight time gate to gate on average is: 01:29 hours.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
Alternative Flights
The following airlines serves the same route between Ontario and San Francisco:
Frontier Airlines
- Flight Number: F92677. (On Time performance: 25 - Average Delay: 43 minutes)
United Airlines
- Flight Number: UA1375. (On Time performance: 86 - Average Delay: 13 minutes)
- Flight Number: UA1665. (On Time performance: 56 - Average Delay: 21 minutes)
- Flight Number: UA1851. (On Time performance: 42 - Average Delay: 36 minutes)
- Flight Number: UA2248. (On Time performance: 66 - Average Delay: 21 minutes)
- Flight Number: UA2363. (On Time performance: 90 - Average Delay: 13 minutes)
Frontier Airlines
- Flight Number: F92677. (On Time performance: 25 - Average Delay: 43 minutes)
United Airlines
- Flight Number: UA1375. (On Time performance: 86 - Average Delay: 13 minutes)
- Flight Number: UA1665. (On Time performance: 56 - Average Delay: 21 minutes)
- Flight Number: UA1851. (On Time performance: 42 - Average Delay: 36 minutes)
- Flight Number: UA2248. (On Time performance: 66 - Average Delay: 21 minutes)
- Flight Number: UA2363. (On Time performance: 90 - Average Delay: 13 minutes)
Punctuality and delays
We have gathered data from recent months and present below an analysis of how timely the flights have been.
Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from May 01, 2026 to May 15, 2026, we have obtained these figures.
Total number of flights: 15
On Time: 10 ( 67 % )
Moderate Delay: 1 ( 7 % )
Significant Delay: 2 ( 13 % )
Major Delay: 2 ( 13 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 23 minutes.
Total number of flights: 15
On Time: 10 ( 67 % )
Moderate Delay: 1 ( 7 % )
Significant Delay: 2 ( 13 % )
Major Delay: 2 ( 13 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 23 minutes.
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Last Past Flights UA1503
Date
Departure
Arrival
Duration
Aircraft
Status
Tuesday
19 May
19 May
01:25 pm
Ontario (ONT)
Ontario (ONT)
03:16 pm
San Francisco (SFO)
San Francisco (SFO)
01h 51min
Airbus A320
Airbus A320
Landed - Delayed
Monday
18 May
18 May
01:40 pm
Ontario (ONT)
Ontario (ONT)
03:35 pm
San Francisco (SFO)
San Francisco (SFO)
01h 55min
Boeing 737-800
Boeing 737-800
Landed - Delayed
Sunday
17 May
17 May
01:41 pm
Ontario (ONT)
Ontario (ONT)
03:26 pm
San Francisco (SFO)
San Francisco (SFO)
01h 45min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Saturday
16 May
16 May
01:35 pm
Ontario (ONT)
Ontario (ONT)
03:18 pm
San Francisco (SFO)
San Francisco (SFO)
01h 43min
Airbus A319
Airbus A319
Landed - Delayed
Friday
15 May
15 May
01:23 pm
Ontario (ONT)
Ontario (ONT)
02:52 pm
San Francisco (SFO)
San Francisco (SFO)
01h 29min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
14 May
14 May
03:06 pm
Ontario (ONT)
Ontario (ONT)
04:43 pm
San Francisco (SFO)
San Francisco (SFO)
01h 37min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Wednesday
13 May
13 May
01:27 pm
Ontario (ONT)
Ontario (ONT)
03:02 pm
San Francisco (SFO)
San Francisco (SFO)
01h 35min
Airbus A320
Airbus A320
Landed - On-time
Tuesday
12 May
12 May
01:24 pm
Ontario (ONT)
Ontario (ONT)
02:55 pm
San Francisco (SFO)
San Francisco (SFO)
01h 31min
Airbus A320
Airbus A320
Landed - On-time
Monday
11 May
11 May
01:22 pm
Ontario (ONT)
Ontario (ONT)
02:54 pm
San Francisco (SFO)
San Francisco (SFO)
01h 32min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
10 May
10 May
01:20 pm
Ontario (ONT)
Ontario (ONT)
02:45 pm
San Francisco (SFO)
San Francisco (SFO)
01h 25min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
