United Airlines UA4257 Flight Status
Based on Trip.com’s real-time data, the UA4257 flight operated by United Airlines on Oct 24, 2026 is scheduled to fly from Washington D.C. (IAD) to Knoxville (TYS). The flight is expected to depart at 09:00 and land at 10:37 .
Fri, Oct 23
Sat, Oct 24
Access more flight status info on the Trip.com app
Show more
Arrived
The flight has arrived 15m early
1h 23m
Check-in Counter
AREA 4
Boarding Gate
A2F
Arrival Gate
22
Baggage
B2
Need a flight from Washington D.C. to Knoxville?
United Airlines
Search flights Access more flight status info on the Trip.com app
Show more
Scheduled
Your flight will depart on time.
1h 37m
Check-in Counter
AREA 4
Boarding Gate
A5A
Arrival Gate
--
Baggage
--
Show more
Need a flight from Washington D.C. to Knoxville?
United Airlines From US$241
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 Knoxville or track other flights with our flight status tracker.
Track the Previous Flight Status: Scheduled
UA4311
|
Knoxville (TYS)
Washington D.C. (WAS)
Washington D.C. (WAS)
Scheduled: 07:25
fake text
Track incoming flight status with our app
Show more
UA4257 Aircraft Details
According to Trip.com real-time data, the UA4257 flight flying from Washington D.C. to Knoxville on 10/24/2026 is operated by the aircraft model Embraer RJ 135/140/145. This aircraft has been in service for 22y, 6m. The aircraft is equipped with 50 seats.
Embraer RJ 135/140/145
Punctuality (Departure)
90
%
Punctuality (Arrival)
93
%
Early on average
11 minutes
Age
22y, 6m
Seats
50
Distance
--
Economy
Premium Economy
Onboard Amenities
Snacks
In-flight entertainment is unavailable
Wi-Fi is unavailable
No power outlets are available
Seating Plan
79 cm
Legroom
--
Seat width
105°
Reclining Angle
1-2
Seat layout example
Onboard Amenities
None
In-flight entertainment is unavailable
Wi-Fi is unavailable
No power outlets are available
Seating Plan
97 cm
More legroom than on 14% of flights
--
Seat width
105°
Reclining Angle
--
Seat layout example
See more amenities and seat info in the app
Show more
Flight History for UA4257
Trip.com historical records show that the last UA4257 flight departed on Fri, Oct 23 from IAD at approximately 08:44. This flight is expected to arrrive in SYR at 09:33.
| Date | Airport | Aircraft Type | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sun, Oct 18 | Washington D.C. (IAD) | Knoxville (TYS) | E45X | 09:19 | 10:20 | Arrived |
| Mon, Oct 19 | Washington D.C. (IAD) | Knoxville (TYS) | E45X | 09:07 | 10:10 | Arrived |
| Tue, Oct 20 | Washington D.C. (IAD) | Knoxville (TYS) | E45X | 09:12 | 10:19 | Arrived |
| Wed, Oct 21 | Washington D.C. (IAD) | Knoxville (TYS) | E45X | 09:09 | 10:13 | Arrived |
| Thu, Oct 22 | Washington D.C. (IAD) | Knoxville (TYS) | E45X | 09:39 | 10:46 | Arrived |
| Fri, Oct 23 | Washington D.C. (IAD) | Syracuse (SYR) | E45X | 08:44 | 09:33 | Arrived |
| Sat, Oct 24 | Washington D.C. (IAD) | Knoxville (TYS) | E45X | 09:00 | 10:37 | Scheduled |
text.text............fake.row.text............text.........fake row
...text
Check upcoming flights with our app
Show more
UA4257 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA4257 is 90% (Late on average 19 minutes), and the on-time arrival rate is 93% (Early on average 11 minutes).
On-Time Departures
Punctuality
90
%
Late on average
19 minutes
Early
3
%
On time
87
%
30 mins late
3
%
60 mins late
3
%
90 mins late
3
%
Cancelled
0
%
On-Time Arrivals
Punctuality
93
%
Early on average
11 minutes
Early
90
%
On time
3
%
30 mins late
3
%
60 mins late
0
%
90 mins late
3
%
Cancelled
0
%
Need a flight from Washington D.C. to Knoxville?
- From Washington D.C.
- To Knoxville
- Return flights
More Cheap Flights
More Cheap Flights
More Cheap Flights
Recommended hotels in Knoxville
Hotels near Mcghee Tyson Airport
Hotels near Knoxville
9.2/10
115 Reviews
Hilton Knoxville Airport
0.24 km from the airport
8% off
US$154 US$141
8.8/10
102 Reviews
Courtyard Knoxville Airport Alcoa
0.78 km from the airport
US$112
8.3/10
103 Reviews
Tru by Hilton Alcoa Knoxville Airport
0.85 km from the airport
US$114
8.4/10
106 Reviews
La Quinta Inn & Suites by Wyndham Knoxville Airport
0.93 km from the airport
15% off
US$84 US$71
9.8/10
49 Reviews
Hotel Cleo, Knoxville Downtown, a Tribute Portfolio Hotel
0.48 km from downtown
US$379
8.9/10
104 Reviews
Marriott Knoxville Downtown
0.9 km from downtown
US$169
9.7/10
100 Reviews
The Oliver Hotel Knoxville, by Oliver
0.66 km from downtown
US$174
9.4/10
98 Reviews
Embassy Suites by Hilton Knoxville Downtown
0.61 km from downtown
US$179 US$181
Frequently Asked Questions
What is the current status of flight ua4257?
Flight ua4257 has not departed yet and is currently on schedule. Scheduled departure 09:00, arrival 10:37 (updated Oct 24, 2026).Is flight ua4257 on time today?
Flight ua4257 has not departed yet and is currently on schedule. Scheduled departure is 09:00, with arrival at 10:37. Recheck gate and timing before you head to the airport.Has flight ua4257 departed yet? What is the departure time?
Flight ua4257 is scheduled to depart at 09:00. The latest actual or estimated departure time is 09:00, and the current status is Scheduled (updated Oct 24, 2026).When is flight ua4257 scheduled to arrive?
Flight ua4257 is scheduled to arrive at 10:37. The latest estimated or actual arrival time is 10:37. Status is Scheduled as of Oct 24, 2026.What route does flight ua4257 fly?
Flight ua4257 is operated by United Airlines from Washington D.C. (IAD) to Knoxville (TYS). Typical flight time is about 1 hour37 minutes; operating days may include Saturday.How can I check real-time status for flight ua4257?
Track flight ua4257 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 ua4257 is delayed or canceled, what should I do?
If ua4257 is delayed or canceled, first confirm the latest status here (Scheduled, updated Oct 24, 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 ua4257 departed from Washington D.C.?
Flight ua4257 has not departed from Washington D.C. (IAD) yet and is currently on schedule for 09:00.What is the seat configuration for flight ua4257?
Flight ua4257 usually flies a Embraer RJ 135/140/145 with seat layout 1-2. Layouts can differ by aircraft subtype and cabin product—confirm your seat map in Manage Booking after you purchase.
Plan Your Knoxville Trip: Cheap Flights, Hotels & Attractions
Hotels
Airport Transfers
Tours & Tickets
Car Rentals
Destination Info: Knoxville Weather & Time
Clear
|
5°C - 22°C
Expected weather conditions upon arrival
0 hour time difference
Time on arrival: Washington D.C. 10:37
|
Knoxville 10:37
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Convenient & reliable booking and payment system