United Airlines UA399 Flight Status
Based on Trip.com’s real-time data, the UA399 flight operated by United Airlines on Feb 13, 2026 is scheduled to fly from Seattle (SEA) to Denver (DEN). The flight is expected to depart at 14:49 (local time in Seattle, UTC-8) and land at 17:56 (local time in Denver, UTC-7) .
Thu, Feb 12
Fri, Feb 13
Sat, Feb 14
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Arrived
The flight has arrived 23m early
2h 43m
Check-in Counter
ZONE 2
Boarding Gate
B7A
Arrival Gate
B19
Baggage
12
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Scheduled
Your flight will depart on time.
2h 43m
Check-in Counter
ZONE 2
Boarding Gate
B9
Arrival Gate
B36
Baggage
12
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Scheduled
Your flight will depart on time.
2h 47m
Check-in Counter
ZONE 2
Boarding Gate
B9
Arrival Gate
--
Baggage
--
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Information provided by VariFlightVariFlight. For the latest updates, please refer to airport announcements or consult your airline. If this is not your flight, you can browse more options for flights from Seattle to Denver to find your schedule.
Track the Previous Flight Status: Scheduled
UA769
|
Tampa (TPA) 
Seattle (SEA)
Seattle (SEA)Scheduled: 13:49
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UA399 Aircraft Details
Airbus A320
Punctuality (Departure)
--
Punctuality (Arrival)
--
Early on average
--
Age
27y, 7m
Seats
150
Distance
--
Economy
First
Premium Economy
Onboard Amenities
None
On-demand entertainment
Wi-Fi (additional charge)
Unknown
Seating Plan
76 cm
Legroom
43 cm
Seat width better than on 38% of flights
100°
Reclining Angle
3-3
Seat layout example
Onboard Amenities
Meal included
On-demand entertainment
Wi-Fi (additional charge)
Power outlet
Seating Plan
99 cm
More legroom than on 71% of flights
48 cm
Seat width
120°
Reclining Angle
2-2
Seat layout example
Onboard Amenities
None
On-demand entertainment
Wi-Fi (additional charge)
Power outlet
Seating Plan
89 cm
More legroom than on 53% of flights
43 cm
Seat width better than on 12% of flights
110°
Reclining Angle
3-3
Seat layout example
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Flight History for UA399
Trip.com historical records show that the last UA399 flight departed on Thu, Feb 12 from SEA at approximately 15:28. This flight is expected to arrrive in DEN at 18:36.
| Date | Airport | Aircraft Type | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sun, Feb 8 | Chicago (ORD) | Boston (BOS) | B39M | 11:34 | 14:22 | Arrived |
| Mon, Feb 9 | Chicago (ORD) | Boston (BOS) | 738 | 11:25 | 14:16 | Arrived |
| Tue, Feb 10 | Chicago (ORD) | Boston (BOS) | A21N | 10:40 | 13:23 | Arrived |
| Wed, Feb 11 | Chicago (ORD) | Boston (BOS) | A21N | 11:17 | 14:08 | Arrived |
| Thu, Feb 12 | Seattle (SEA) | Denver (DEN) | 739 | 15:28 | 18:36 | Arrived |
| Fri, Feb 13 | Seattle (SEA) | Denver (DEN) | 738 | 14:49 | 17:56 | Scheduled |
| Sat, Feb 14 | Seattle (SEA) | Denver (DEN) | 320 | 15:25 | 19:12 | Scheduled |
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Destination Info: Denver Weather & Time
Mostly cloudy
|
-°C - 15°C
Expected weather conditions upon arrival
1 hour time difference
Time on arrival: Seattle 18:12| Denver 19:12
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