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United Airlines United Airlines

UA1257 Flight Status

According to Trip.com real-time data, the UA1257 flight operated by United Airlines on Nov 5, 2026 is scheduled to fly from St. Louis (STL) to San Diego (SAN). The flight is expected to depart at 08:00 (local time in St. Louis, UTC-6) and land at 13:47 (local time in San Diego, UTC-8) .
Wed, Nov 4
Thu, Nov 5
Fri, Nov 6
STL-SAN

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En route
Your flight has departed St. Louis and is expected to arrive in San Diego at 14:07.
St. Louis(STL)
08:42
Scheduled: 08:00, Nov 4
St. Louis Lambert International Airport T1
173106C5-5199-4134-A176-6296CB3DA377 7h 47m
SFO
1h 56m
San Diego(SAN)
14:07
Scheduled: 13:47, Nov 4
San Diego International Airport T2
Check-in Counter
--
Boarding Gate
A16
Arrival Gate
40
Baggage
6
Need a flight from St. Louis to San Diego?
United Airlines From MYR 748
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STL-SAN

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Scheduled
Your flight will depart on time.
St. Louis(STL)
08:00
Scheduled: 08:00, Nov 5
St. Louis Lambert International Airport T1
173106C5-5199-4134-A176-6296CB3DA377 7h 47m
SFO
2h 9m
San Diego(SAN)
13:47
Scheduled: 13:47, Nov 5
San Diego International Airport T2
Check-in Counter
--
Boarding Gate
A16
Arrival Gate
41
Baggage
6
Show More
Need a flight from St. Louis to San Diego?
United Airlines From MYR 748
Search flights
STL-SAN

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Scheduled
Your flight will depart on time.
St. Louis(STL)
08:00
Scheduled: 08:00, Nov 6
St. Louis Lambert International Airport T1
173106C5-5199-4134-A176-6296CB3DA377 7h 47m
SFO
1h 29m
San Diego(SAN)
13:47
Scheduled: 13:47, Nov 6
San Diego International Airport T2
Check-in Counter
--
Boarding Gate
--
Arrival Gate
--
Baggage
6
Show More
Need a flight from St. Louis to San Diego?
United Airlines From MYR 748
Search flights
Information provided by VariFlight. Please refer to airport announcements for the most up-to-date information.

UA1257 Aircraft Details

According to Trip.com real-time data, the UA1257 flight flying from St. Louis to San Diego on 11/5/2026 is operated by the aircraft model Boeing 737-800. This aircraft has been in service for 19y, 1m. The aircraft is equipped with 128 seats.
flight status
Boeing 737-800
Punctuality (Departure)
63 %
Punctuality (Arrival)
67 %
Late on average
20 minutes
Age
19y, 1m
Seats
128
Flight Distance
--

Recent Flight History for UA1257

Trip.com historical records show that the last UA1257 flight departed on Wed, Nov 4 from STL at approximately 08:42. This flight is expected to arrrive in SAN at 14:07.
Date Airport Aircraft Model Departure Arrival Status
Departure Arrival
Sat, Oct 31 St. Louis (STL) San Diego (SAN) 319 08:13 13:29 Arrived
Sun, Nov 1 St. Louis (STL) San Diego (SAN) 319 08:08 14:06 Arrived
Mon, Nov 2 St. Louis (STL) San Diego (SAN) 738 08:12 14:14 Arrived
Tue, Nov 3 St. Louis (STL) San Diego (SAN) 319 08:07 13:40 Arrived
Wed, Nov 4 St. Louis (STL) San Diego (SAN) 319 08:42 14:07 En route
Thu, Nov 5 St. Louis (STL) San Diego (SAN) 738 08:00 13:47 Scheduled
Fri, Nov 6 St. Louis (STL) San Diego (SAN) 738 08:00 13:47 Scheduled

UA1257 On-Time Performance

Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA1257 is 63% (Late on average 37 minutes), and the on-time arrival rate is 67% (Late on average 20 minutes).

On-Time Departures
Punctuality
63 %
Late on average 37 minutes
Early
0 %
On time
63 %
30 mins late
13 %
60 mins late
10 %
90 mins late
13 %
Cancelled
0 %
On-Time Arrivals
Punctuality
67 %
Late on average 20 minutes
Early
20 %
On time
47 %
30 mins late
23 %
60 mins late
10 %
90 mins late
0 %
Cancelled
0 %

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Frequently Asked Questions

  • What is the current status of flight ua1257?

    Flight ua1257 has not departed yet and is currently on schedule. Scheduled departure 08:00, arrival 13:47 (updated Nov 5, 2026).
  • Flight ua1257 has not departed yet and is currently on schedule. Scheduled departure is 08:00, with arrival at 13:47. Recheck gate and timing before you head to the airport.
  • Flight ua1257 is scheduled to depart at 08:00. The latest actual or estimated departure time is 08:00, and the current status is Scheduled (updated Nov 5, 2026).
  • Flight ua1257 is scheduled to arrive at 13:47. The latest estimated or actual arrival time is 13:47. Status is Scheduled as of Nov 5, 2026.
  • For flight ua1257, the departure terminal is T1 and the boarding gate is A16. Gate assignments can change at short notice—confirm on airport screens before heading to security.
  • After arrival, baggage for flight ua1257 is expected at carousel 6 in terminal T2. Carousel numbers are assigned close to landing and may change—follow airport signs on arrival.
  • Flight ua1257 is operated by United Airlines from St. Louis (STL) to San Diego (SAN). Typical flight time is about 7 hours 47 minutes; operating days may include Thursday.
  • Track flight ua1257 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications.
  • If ua1257 is delayed or canceled, first confirm the latest status here (Scheduled, updated Nov 5, 2026). Contact United Airlines or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com.
  • Flight ua1257 has not departed from St. Louis (STL) yet and is currently on schedule for 08:00.

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Arrival Info: San Diego Weather & Current Time

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Intermittent clouds
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15°C - 24°C
Weather forecast for your arrival day
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-2 hour time difference
Time on arrival: St. Louis 15:47 | San Diego 13:47

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