United Airlines UA4055 Flight Status
Based on Trip.com’s real-time data, the UA4055 flight operated by United Airlines on Oct 31, 2026 is scheduled to fly from Washington D.C. (IAD) to Louisville (SDF). The flight is expected to depart at 17:35 and land at 18:47 .
Fri, Oct 30
Sat, Oct 31
Sun, Nov 1
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Arrived
The flight has arrived 6m early
1h 55m
Check-in Counter
AREA 4
Boarding Gate
Z7
Arrival Gate
A8
Baggage
1
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Scheduled
Your flight will depart on time.
1h 55m
Check-in Counter
AREA 4
Boarding Gate
A2A
Arrival Gate
--
Baggage
--
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Scheduled
Your flight will depart on time.
1h 55m
Check-in Counter
AREA 4
Boarding Gate
--
Arrival Gate
--
Baggage
--
Show more
Need a flight from Washington D.C. to Louisville?
United Airlines From US$245
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 Washington D.C. to Louisville or track other flights with our flight status tracker.
UA4055 Aircraft Details
According to Trip.com real-time data, the UA4055 flight flying from Washington D.C. to Louisville on 10/31/2026 is operated by the aircraft model Embraer 175. This aircraft has been in service for 11y, 6m. The aircraft is equipped with 76 seats.
Embraer 175
Punctuality (Departure)
80
%
Punctuality (Arrival)
100
%
Early on average
21 minutes
Age
11y, 6m
Seats
76
Distance
--
Economy
First
Premium Economy
Onboard Amenities
Snacks
Inflight entertainment is available
Unknown
Unknown
Seating Plan
79 cm
Legroom
46 cm
Seat width
100°
Reclining Angle
2-2
Seat layout example
Onboard Amenities
Snacks
Inflight entertainment is available
Unknown
Power outlet
Seating Plan
94 cm
Legroom
51 cm
Seat width
120°
Reclining Angle
1-2
Seat layout example
Onboard Amenities
None
In-flight entertainment is unavailable
Unknown
No power outlets are available
Seating Plan
86 cm
Legroom
46 cm
Seat width
105°
Reclining Angle
--
Seat layout example
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Flight History for UA4055
Trip.com historical records show that the last UA4055 flight departed on Fri, Oct 30 from IAD at approximately 18:04. This flight is expected to arrrive in SDF at 19:24.
| Date | Airport | Aircraft Type | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Mon, Oct 26 | Washington D.C. (IAD) | Louisville (SDF) | E75L | 17:44 | 18:58 | Arrived |
| Tue, Oct 27 | Washington D.C. (IAD) | Louisville (SDF) | E75L | 18:08 | 19:25 | Arrived |
| Wed, Oct 28 | Washington D.C. (IAD) | Louisville (SDF) | E75L | 17:46 | 19:08 | Arrived |
| Thu, Oct 29 | Washington D.C. (IAD) | Louisville (SDF) | E75L | 17:53 | 19:13 | Arrived |
| Fri, Oct 30 | Washington D.C. (IAD) | Louisville (SDF) | E75L | 18:04 | 19:24 | Arrived |
| Sat, Oct 31 | Washington D.C. (IAD) | Louisville (SDF) | E75L | 17:35 | 18:47 | Scheduled |
| Sun, Nov 1 | Washington D.C. (IAD) | Louisville (SDF) | E75L | 17:35 | 19:30 | Scheduled |
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UA4055 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA4055 is 80% (Late on average 16 minutes), and the on-time arrival rate is 100% (Early on average 21 minutes).
On-Time Departures
Punctuality
80
%
Late on average
16 minutes
Early
0
%
On time
80
%
30 mins late
20
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
On-Time Arrivals
Punctuality
100
%
Early on average
21 minutes
Early
100
%
On time
0
%
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 ua4055?
Flight ua4055 has not departed yet and is currently on schedule. Scheduled departure 17:35, arrival 19:30 (updated Oct 31, 2026).Is flight ua4055 on time today?
Flight ua4055 has not departed yet and is currently on schedule. Scheduled departure is 17:35, with arrival at 19:30. Recheck gate and timing before you head to the airport.Has flight ua4055 departed yet? What is the departure time?
Flight ua4055 is scheduled to depart at 17:35. The latest actual or estimated departure time is 17:35, and the current status is Scheduled (updated Oct 31, 2026).When is flight ua4055 scheduled to arrive?
Flight ua4055 is scheduled to arrive at 19:30. The latest estimated or actual arrival time is 18:47. Status is Scheduled as of Oct 31, 2026.What route does flight ua4055 fly?
Flight ua4055 is operated by United Airlines from Washington D.C. (IAD) to Louisville (SDF). Typical flight time is about 1 hour55 minutes; operating days may include Saturday.How can I check real-time status for flight ua4055?
Track flight ua4055 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 ua4055 is delayed or canceled, what should I do?
If ua4055 is delayed or canceled, first confirm the latest status here (Scheduled, updated Oct 31, 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 ua4055 departed from Washington D.C.?
Flight ua4055 has not departed from Washington D.C. (IAD) yet and is currently on schedule for 17:35.What is the seat configuration for flight ua4055?
Flight ua4055 usually flies a Embraer 175 with seat layout 2-2. Layouts can differ by aircraft subtype and cabin product—confirm your seat map in Manage Booking after you purchase.
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Destination Info: Louisville Weather & Time
Clear
|
10°C - 24°C
Expected weather conditions upon arrival
0 hour time difference
Time on arrival: Washington D.C. 19:30
|
Louisville 19:30
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