Airport Tips & Quick Reference Guide to Seattle–Tacoma Airport - Seatac (SEA)

UA1351 United Airlines - Flight Status

Codeshare Flights
The flight OZ6306 from Asiana Airlines (OZ) is a codeshare flight operated by United Airlines (UA) under the flight number UA1351. Check this page for details about flight UA1351.

Below, you can find details about United Airlines flight UA1351, which currently operates between the airports of San Francisco - San Francisco International Airport (Airport Code SFO) and Seattle - Seattle-Tacoma International Airport (Airport Code SEA).
This flight data pertains specifically to the flight's details for Tuesday, April 21, 2026.

UA1351 On Time performance:
71
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

UA1351 United Airlines from San Francisco

Scheduled - On-time
Flight Status for Tuesday April 21, 2026
This flight was also scheduled for Yesterday (April 20, 2026). See it here
This flight is also scheduled for Tomorrow (April 22, 2026). See it here

Airline information

United Airlines
United Airlines
Equipment: Airbus A319

Departure

San Francisco (SFO)
April 21, 2026
San Francisco International Airport
Estimated Departure Time:
08:15 am
Terminal:
2
Gate:
D6
Scheduled Departure Time: 08:15 am

Arrival

Seattle (SEA)
April 21, 2026
Seattle-Tacoma International Airport
Estimated Arrival Time:
10:13 am
Gate:
B9
Scheduled Arrival Time: 10:39 am
Baggage: 9
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.seattle-airport.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:

- NZ9405 - Air New Zealand

- OZ6306 - Asiana Airlines

- VA8281 - Virgin Australia

Additional Information

Which is the frequency of flight UA1351?
The flight UA1351 is scheduled to flight on daily basis.

Which is the distance of flight UA1351?
The distance between the two airports is 679 miles.

Which is the flight time of flight UA1351?
The scheduled flight time gate to gate is: 02:24 hours.
The real flight time gate to gate on average is: 02:26 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 San Francisco and Seattle:

Alaska Airlines
- Flight Number: AS1317. (On Time performance: 78 - Average Delay: 21 minutes)
- Flight Number: AS1340. (On Time performance: 79 - Average Delay: 10 minutes)
- Flight Number: AS1489. (On Time performance: 58 - Average Delay: 19 minutes)
- Flight Number: AS316. (On Time performance: 79 - Average Delay: 16 minutes)
- Flight Number: AS580. (On Time performance: 93 - Average Delay: 4 minutes)
- Flight Number: AS68. (On Time performance: 95 - Average Delay: 3 minutes)
- Flight Number: AS758. (On Time performance: 77 - Average Delay: 15 minutes)

Delta Air Lines
- Flight Number: DL1412. (On Time performance: 81 - Average Delay: 21 minutes)
- Flight Number: DL2721. (On Time performance: 96 - Average Delay: 11 minutes)
- Flight Number: DL3707. (On Time performance: 74 - Average Delay: 14 minutes)
- Flight Number: DL3814. (On Time performance: 81 - Average Delay: 16 minutes)
- Flight Number: DL3991. (On Time performance: 79 - Average Delay: 11 minutes)
- Flight Number: DL750. (On Time performance: 83 - Average Delay: 6 minutes)

United Airlines
- Flight Number: UA1007. (On Time performance: 69 - Average Delay: 19 minutes)
- Flight Number: UA1434. (On Time performance: 92 - Average Delay: 5 minutes)
- Flight Number: UA1498. (On Time performance: 82 - Average Delay: 14 minutes)
- Flight Number: UA1597. (On Time performance: 90 - Average Delay: 5 minutes)
- Flight Number: UA1763. (On Time performance: 95 - Average Delay: 9 minutes)
- Flight Number: UA2279. (On Time performance: 86 - Average Delay: 10 minutes)
- Flight Number: UA2340. (On Time performance: 96 - Average Delay: 4 minutes)
- Flight Number: UA5579. (On Time performance: 89 - 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.

In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from March 29, 2026 to April 18, 2026, we have obtained these figures.
Total number of flights: 21
On Time: 15 ( 71 % )
Moderate Delay: 4 ( 19 % )
Significant Delay: 2 ( 10 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 10 minutes.
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

Last Past Flights UA1351

Date
Departure
Arrival
Duration
Aircraft
Status
Monday
20 April
08:17 am
San Francisco (SFO)
11:06 am
Seattle (SEA)
02h 49min
Airbus A319
Airbus A319
Landed - Delayed
Sunday
19 April
07:53 am
San Francisco (SFO)
09:45 am
Seattle (SEA)
01h 52min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Saturday
18 April
08:15 am
San Francisco (SFO)
10:15 am
Seattle (SEA)
02h 00min
Airbus A319
Airbus A319
Landed - On-time
Friday
17 April
08:20 am
San Francisco (SFO)
11:07 am
Seattle (SEA)
02h 47min
Airbus A320
Airbus A320
Landed - Delayed
Thursday
16 April
08:13 am
San Francisco (SFO)
10:53 am
Seattle (SEA)
02h 40min
Airbus A320
Airbus A320
Landed - On-time
Wednesday
15 April
08:11 am
San Francisco (SFO)
10:11 am
Seattle (SEA)
02h 00min
Airbus A319
Airbus A319
Landed - On-time
Tuesday
14 April
08:11 am
San Francisco (SFO)
11:13 am
Seattle (SEA)
03h 02min
Airbus A320
Airbus A320
Landed - Delayed
Monday
13 April
08:14 am
San Francisco (SFO)
11:07 am
Seattle (SEA)
02h 53min
Airbus A319
Airbus A319
Landed - Delayed
Sunday
12 April
08:09 am
San Francisco (SFO)
11:06 am
Seattle (SEA)
02h 57min
Airbus A319
Airbus A319
Landed - Delayed
Saturday
11 April
08:11 am
San Francisco (SFO)
10:51 am
Seattle (SEA)
02h 40min
Airbus A319
Airbus A319
Landed - On-time