UA259 United Airlines - Flight Status
Codeshare Flights
The flight AC4049 from Air Canada (AC) is a codeshare flight operated by United Airlines (UA) under the flight number UA259. Check this page for details about flight UA259.
Below, you can find details about United Airlines flight UA259, which currently operates between the airports of San Francisco - San Francisco International Airport (Airport Code SFO) and Denver - Denver International Airport (Airport Code DEN).
This flight data pertains specifically to the flight's details for Friday, March 20, 2026.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA259
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA259
UA259 On Time performance:
78
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
UA259 United Airlines to Denver
Landed - On-time
Flight Status for Friday March 20, 2026
This flight is also scheduled for Today (March 21, 2026). See it here
This flight is also scheduled for Tomorrow (March 22, 2026). See it here
Landed - On-time
Flight Status for Friday March 20, 2026
Departure
San Francisco (SFO)
March 20, 2026
San Francisco International Airport
Departed at:
12:56 pm
Terminal:
3
Gate:
F16
Scheduled Departure Time: 01:00 pm
Arrival
Denver (DEN)
March 20, 2026
Denver International Airport
Arrived at:
04:25 pm
Terminal:
-
Gate:
B24
Scheduled Arrival Time: 04:40 pm
Baggage: 14
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:
- AC4049 - Air Canada
- NH7310 - ANA All Nippon Airways
- NZ9056 - Air New Zealand
- VA8338 - Virgin Australia
Additional Information
Which is the frequency of flight UA259?
The flight UA259 is scheduled to flight on daily basis.
Which is the distance of flight UA259?
The distance between the two airports is 966 miles.
Which is the flight time of flight UA259?
The scheduled flight time gate to gate is: 02:40 hours.
The real flight time gate to gate on average is: 02:36 hours.
Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in San Francisco: 2026-03-21 09:31:36
Current Time in Denver: 2026-03-21 10:31:36
The flight UA259 is scheduled to flight on daily basis.
Which is the distance of flight UA259?
The distance between the two airports is 966 miles.
Which is the flight time of flight UA259?
The scheduled flight time gate to gate is: 02:40 hours.
The real flight time gate to gate on average is: 02:36 hours.
Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in San Francisco: 2026-03-21 09:31:36
Current Time in Denver: 2026-03-21 10:31:36
Alternative Flights
The following airlines serves the same route between San Francisco and Denver:
Frontier Airlines
- Flight Number: F91094. (On Time performance: 65 - Average Delay: 31 minutes)
- Flight Number: F91230. (On Time performance: 89 - Average Delay: 7 minutes)
- Flight Number: F93440. (On Time performance: 87 - Average Delay: 10 minutes)
United Airlines
- Flight Number: UA1023. (On Time performance: 78 - Average Delay: 18 minutes)
- Flight Number: UA1430. (On Time performance: 83 - Average Delay: 13 minutes)
- Flight Number: UA1479. (On Time performance: 67 - Average Delay: 10 minutes)
- Flight Number: UA1596. (On Time performance: 72 - Average Delay: 17 minutes)
- Flight Number: UA1604. (On Time performance: 67 - Average Delay: 25 minutes)
- Flight Number: UA2076. (On Time performance: 78 - Average Delay: 15 minutes)
- Flight Number: UA2302. (On Time performance: 95 - Average Delay: 9 minutes)
- Flight Number: UA2348. (On Time performance: 88 - Average Delay: 5 minutes)
- Flight Number: UA2420. (On Time performance: 96 - Average Delay: -1 minutes)
- Flight Number: UA2436. (On Time performance: 88 - Average Delay: 9 minutes)
- Flight Number: UA301. (On Time performance: 83 - Average Delay: 7 minutes)
- Flight Number: UA450. (On Time performance: 85 - Average Delay: 12 minutes)
- Flight Number: UA513. (On Time performance: 89 - Average Delay: 4 minutes)
Southwest Airlines
- Flight Number: WN1228. (On Time performance: 84 - Average Delay: 12 minutes)
- Flight Number: WN2477. (On Time performance: 100 - Average Delay: 1 minutes)
- Flight Number: WN276.
- Flight Number: WN310. (On Time performance: 83 - Average Delay: 7 minutes)
- Flight Number: WN4257. (On Time performance: 64 - Average Delay: 18 minutes)
- Flight Number: WN4429. (On Time performance: 33 - Average Delay: 40 minutes)
- Flight Number: WN4430. (On Time performance: 44 - Average Delay: 26 minutes)
- Flight Number: WN4498. (On Time performance: 88 - Average Delay: 8 minutes)
- Flight Number: WN4499. (On Time performance: 71 - Average Delay: 21 minutes)
- Flight Number: WN860. (On Time performance: 67 - Average Delay: 10 minutes)
Frontier Airlines
- Flight Number: F91094. (On Time performance: 65 - Average Delay: 31 minutes)
- Flight Number: F91230. (On Time performance: 89 - Average Delay: 7 minutes)
- Flight Number: F93440. (On Time performance: 87 - Average Delay: 10 minutes)
United Airlines
- Flight Number: UA1023. (On Time performance: 78 - Average Delay: 18 minutes)
- Flight Number: UA1430. (On Time performance: 83 - Average Delay: 13 minutes)
- Flight Number: UA1479. (On Time performance: 67 - Average Delay: 10 minutes)
- Flight Number: UA1596. (On Time performance: 72 - Average Delay: 17 minutes)
- Flight Number: UA1604. (On Time performance: 67 - Average Delay: 25 minutes)
- Flight Number: UA2076. (On Time performance: 78 - Average Delay: 15 minutes)
- Flight Number: UA2302. (On Time performance: 95 - Average Delay: 9 minutes)
- Flight Number: UA2348. (On Time performance: 88 - Average Delay: 5 minutes)
- Flight Number: UA2420. (On Time performance: 96 - Average Delay: -1 minutes)
- Flight Number: UA2436. (On Time performance: 88 - Average Delay: 9 minutes)
- Flight Number: UA301. (On Time performance: 83 - Average Delay: 7 minutes)
- Flight Number: UA450. (On Time performance: 85 - Average Delay: 12 minutes)
- Flight Number: UA513. (On Time performance: 89 - Average Delay: 4 minutes)
Southwest Airlines
- Flight Number: WN1228. (On Time performance: 84 - Average Delay: 12 minutes)
- Flight Number: WN2477. (On Time performance: 100 - Average Delay: 1 minutes)
- Flight Number: WN276.
- Flight Number: WN310. (On Time performance: 83 - Average Delay: 7 minutes)
- Flight Number: WN4257. (On Time performance: 64 - Average Delay: 18 minutes)
- Flight Number: WN4429. (On Time performance: 33 - Average Delay: 40 minutes)
- Flight Number: WN4430. (On Time performance: 44 - Average Delay: 26 minutes)
- Flight Number: WN4498. (On Time performance: 88 - Average Delay: 8 minutes)
- Flight Number: WN4499. (On Time performance: 71 - Average Delay: 21 minutes)
- Flight Number: WN860. (On Time performance: 67 - Average Delay: 10 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 March 05, 2026 to March 13, 2026, we have obtained these figures.
Total number of flights: 9
On Time: 7 ( 78 % )
Moderate Delay: 1 ( 11 % )
Significant Delay: 0 ( 0 % )
Major Delay: 1 ( 11 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 21 minutes.
Total number of flights: 9
On Time: 7 ( 78 % )
Moderate Delay: 1 ( 11 % )
Significant Delay: 0 ( 0 % )
Major Delay: 1 ( 11 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 21 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 UA259
Date
Departure
Arrival
Duration
Aircraft
Status
Friday
20 March
20 March
12:56 pm
San Francisco (SFO)
San Francisco (SFO)
04:25 pm
Denver (DEN)
Denver (DEN)
02h 29min
Boeing 757-200
Boeing 757-200
Landed - On-time
Thursday
19 March
19 March
01:07 pm
San Francisco (SFO)
San Francisco (SFO)
04:32 pm
Denver (DEN)
Denver (DEN)
02h 25min
Boeing 757-200
Boeing 757-200
Landed - On-time
Wednesday
18 March
18 March
12:58 pm
San Francisco (SFO)
San Francisco (SFO)
04:17 pm
Denver (DEN)
Denver (DEN)
02h 19min
Boeing 757-200
Boeing 757-200
Landed - On-time
Tuesday
17 March
17 March
01:29 pm
San Francisco (SFO)
San Francisco (SFO)
04:45 pm
Denver (DEN)
Denver (DEN)
02h 16min
Boeing 777-200
Boeing 777-200
Landed - On-time
Monday
16 March
16 March
01:06 pm
San Francisco (SFO)
San Francisco (SFO)
04:36 pm
Denver (DEN)
Denver (DEN)
02h 30min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
15 March
15 March
01:17 pm
San Francisco (SFO)
San Francisco (SFO)
04:55 pm
Denver (DEN)
Denver (DEN)
02h 38min
Boeing 757-200
Boeing 757-200
Landed - Delayed
Saturday
14 March
14 March
01:02 pm
San Francisco (SFO)
San Francisco (SFO)
04:36 pm
Denver (DEN)
Denver (DEN)
02h 34min
Boeing 737-900
Boeing 737-900
Landed - On-time
Friday
13 March
13 March
12:55 pm
San Francisco (SFO)
San Francisco (SFO)
04:30 pm
Denver (DEN)
Denver (DEN)
02h 35min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
12 March
12 March
03:40 pm
San Francisco (SFO)
San Francisco (SFO)
07:09 pm
Denver (DEN)
Denver (DEN)
02h 29min
Boeing 757-200
Boeing 757-200
Landed - Delayed
Wednesday
11 March
11 March
12:58 pm
San Francisco (SFO)
San Francisco (SFO)
04:36 pm
Denver (DEN)
Denver (DEN)
02h 38min
Boeing 757-200
Boeing 757-200
Landed - On-time
