United Airlines UA4390 Flight Status
Based on Trip.com’s real-time data, the UA4390 flight operated by United Airlines on Oct 30, 2026 is scheduled to fly from Buffalo (BUF) to Portland (PWM). The flight is expected to depart at 06:00 and land at 10:07 .
Thu, Oct 29
Fri, Oct 30
Sat, Oct 31
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Arrived
The flight has arrived 8m early
4h 7m
IAD
1h 20m
Check-in Counter
--
Boarding Gate
11
Arrival Gate
3
Baggage
C
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United Airlines From TRY 8,284
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Scheduled
Your flight will depart on time.
4h 7m
IAD
1h 36m
Check-in Counter
--
Boarding Gate
11
Arrival Gate
3
Baggage
C
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United Airlines From TRY 8,284
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Scheduled
Your flight will depart on time.
1h 39m
Check-in Counter
AREA 4
Boarding Gate
A5D
Arrival Gate
--
Baggage
--
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United Airlines
Search flights Information provided by VariFlight For the latest updates, please refer to airport announcements or consult your airline. You can also explore more flights from Buffalo to Portland or track other flights with our flight status tracker.
Track the Previous Flight Status: Landed at Buffalo
UA4541
|
Providence (PVD)
Buffalo (BUF)
Buffalo (BUF)
Scheduled: 23:44
|
27m early
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UA4390 Aircraft Details
According to Trip.com real-time data, the UA4390 flight flying from Buffalo to Portland on 10/30/2026 is operated by the aircraft model Bombardier CRJ-550. This aircraft has been in service for 23y, 10m. The aircraft is equipped with 50 seats.
Bombardier CRJ-550
Punctuality (Departure)
100
%
Punctuality (Arrival)
100
%
Early on average
7 minutes
Age
23y, 10m
Seats
50
Distance
--
Economy
First
Premium Economy
Onboard Amenities
None
On-demand entertainment
Wi-Fi is available
USB port and power outlet
Seating Plan
79 cm
Legroom
44 cm
Seat width
100°
Reclining Angle
--
Seat layout example
Onboard Amenities
None
On-demand entertainment
Wi-Fi is available
USB port and power outlet
Seating Plan
94 cm
Legroom
51 cm
Seat width
120°
Reclining Angle
--
Seat layout example
Onboard Amenities
None
On-demand entertainment
Wi-Fi is available
USB port and power outlet
Seating Plan
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 Thu, Oct 29 from BUF at approximately 06:17. This flight is expected to arrrive in PWM at 09:59.
| Date | Airport | Aircraft Type | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Mon, Oct 26 | Buffalo (BUF) | Portland (PWM) | CRJ7 | 06:07 | 10:00 | Arrived |
| 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 | 06:00 | 10:07 | Scheduled |
| Sat, Oct 31 | Washington D.C. (IAD) | Portland (PWM) | CRJ7 | 08:28 | 10:07 | Scheduled |
| Sun, Nov 1 | 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 past 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 7 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
7 minutes
Early
75
%
On time
25
%
30 mins late
0
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
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Frequently Asked Questions
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 Oct 30, 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 Oct 30, 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 Oct 30, 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 hours7 minutes; operating days may include Friday.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 Oct 30, 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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Destination Info: Portland Weather & Time
Clear
|
12°C - 17°C
Expected weather conditions upon arrival
0 hour time difference
Time on arrival: Buffalo 10:07
|
Portland 10:07
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