United Airlines UA4390 Flight status
According to Trip.com real-time data, the UA4390 flight operated by United Airlines on Nov 1, 2026 is scheduled to fly from Buffalo (BUF) to Portland (PWM). The flight is expected to depart at 06:00 and arrive at 10:07 .
Sat, Oct 31
Sun, Nov 1
Mon, Nov 2
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Arrived
The flight has arrived 11m early
1h 39m
Check-in Counter
AREA 4
Boarding Gate
A6C
Arrival Gate
2
Baggage
C
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United Airlines
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Scheduled
Your flight will depart on time.
4h 7m
IAD
1h 36m
Check-in Counter
--
Boarding Gate
11
Arrival Gate
2
Baggage
C
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United Airlines From AED 619
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Scheduled
Your flight will depart on time.
4h 7m
IAD
1h
Check-in Counter
--
Boarding Gate
--
Arrival Gate
--
Baggage
--
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United Airlines From AED 619
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Track the Previous Flight Status: Landed at Buffalo
UA4570
|
New York (NYC)
Buffalo (BUF)
Buffalo (BUF)
Scheduled: 20:03
|
17m early
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UA4390 Aircraft Details
According to Trip.com real-time data, the UA4390 flight from Buffalo to Portland on 11/1/2026 is operated using the aircraft model Bombardier CRJ-550. This aircraft has been in service for 23y, 7m. The aircraft has 50 seats.
Bombardier CRJ-550
Punctuality (Departure)
100
%
Punctuality (Arrival)
100
%
Early on average
5 minutes
Age
23y, 7m
Seats
50
Flight Distance
--
Economy
First
Premium Economy
In-Flight Services
None
On-demand entertainment
Wi-Fi is available
USB port and power outlet
Seat Information
79 cm
Legroom
44 cm
Seat width
100°
Reclining Angle
--
Seat layout example
In-Flight Services
None
On-demand entertainment
Wi-Fi is available
USB port and power outlet
Seat Information
94 cm
Legroom
51 cm
Seat width
120°
Reclining Angle
--
Seat layout example
In-Flight Services
None
On-demand entertainment
Wi-Fi is available
USB port and power outlet
Seat Information
86 cm
Legroom
44 cm
Seat width
100°
Reclining Angle
--
Seat layout example
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Flight History for UA4390
Trip.com historical records show that the last UA4390 flight departed on Sat, Oct 31 from BUF at approximately 08:38. This flight is expected to arrrive in PWM at 09:56.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Tue, Oct 27 | Washington D.C. (IAD) | Portland (PWM) | CRJ7 | 08:39 | 09:49 | Arrived |
| Wed, Oct 28 | Buffalo (BUF) | Portland (PWM) | CRJ7 | 06:07 | 09:51 | Arrived |
| Thu, Oct 29 | Buffalo (BUF) | Portland (PWM) | CRJ7 | 06:17 | 09:59 | Arrived |
| Fri, Oct 30 | Buffalo (BUF) | Portland (PWM) | CRJ7 | 06:09 | 10:10 | Arrived |
| Sat, Oct 31 | Washington D.C. (IAD) | Portland (PWM) | CRJ7 | 08:38 | 09:56 | Arrived |
| Sun, Nov 1 | Buffalo (BUF) | Portland (PWM) | CRJ7 | 06:00 | 10:07 | Scheduled |
| Mon, Nov 2 | Buffalo (BUF) | Portland (PWM) | CRJ7 | 06:00 | 10:07 | Scheduled |
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UA4390 On-Time Performance
Based on the average performance of this flight over the last 30 trips, the on-time departure rate of UA4390 is 100% (Late on average 10 minutes), and the on-time arrival rate is 100% (Early on average 5 minutes).
On-Time Departures
Punctuality
100
%
Late on average
10 minutes
Early
0
%
On time
100
%
30 mins late
0
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
On-Time Arrivals
Punctuality
100
%
Early on average
5 minutes
Early
60
%
On time
40
%
30 mins late
0
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
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Flight FAQs
What is the current status of flight ua4390?
Flight ua4390 has not departed yet and is currently on schedule. Scheduled departure 06:00, arrival 10:07 (updated Nov 1, 2026).Is flight ua4390 on time today?
Flight ua4390 has not departed yet and is currently on schedule. Scheduled departure is 06:00, with arrival at 10:07. Recheck gate and timing before you head to the airport.Has flight ua4390 departed yet? What is the departure time?
Flight ua4390 is scheduled to depart at 06:00. The latest actual or estimated departure time is 06:00, and the current status is Scheduled (updated Nov 1, 2026).When is flight ua4390 scheduled to arrive?
Flight ua4390 is scheduled to arrive at 10:07. The latest estimated or actual arrival time is 10:07. Status is Scheduled as of Nov 1, 2026.What route does flight ua4390 fly?
Flight ua4390 is operated by United Airlines from Buffalo (BUF) to Portland (PWM). Typical flight time is about 4 hours 7 minutes; operating days may include Sunday.How can I check real-time status for flight ua4390?
Track flight ua4390 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 flight ua4390 is delayed or canceled, what should I do?
If ua4390 is delayed or canceled, first confirm the latest status here (Scheduled, updated Nov 1, 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.Has flight ua4390 departed from Buffalo?
Flight ua4390 has not departed from Buffalo (BUF) yet and is currently on schedule for 06:00.
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Time on arrival: Buffalo 10:07
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