United Airlines UA521 Flight Status Today

Domestic flight United Airlines UA521 takes off from Atlanta (ATL) United States to Houston (IAH) United States. It's operated by United Airlines. The plane leaves Hartsfield-Jackson Atlanta International Airport at 15:57 19 March 2026 America/New_York. The flight is expected to land at George Bush Intercontinental Airport at 17:25 19 March 2026 America/Chicago. The flight will last about 2 hours 28 minutes.

Current status of UA521 is Departed On time Estimated Arrival in 1 hour, 13 minutes

UA521 - UAL521 United Airlines (UA)
ATL Atlanta United States
Flight ATL to IAH
IAH Houston United States
Departed On time Estimated Arrival in 1 hour, 13 minutes
Departure Hartsfield-Jackson Atlanta International Airport
IATA: ATLICAO: KATL
Scheduled 15:57 19 March 2026
Actual 16:00 19 March 2026
N T21
Arrival George Bush Intercontinental Airport
IATA: IAHICAO: KIAH
Scheduled 17:25 19 March 2026
Estimated 17:04 19 March 2026
D 4A
UA521 Detail
  • Type: Domestic Flight
  • Code Shares: EK 6006, NZ 6332
  • Flight Duration: 2 hours 28 minutes
  • Flight Distance: 1108 kms / 688 miles
Airline
  • United Airlines
  • IATA: UA
  • ICAO: UAL
  • Operating Days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
Passenger Services
  • Service type: Normal passenger
  • Seats: 167
  • Freight capacity: 17.1 tons
  • Passenger classes: First Class, Economy, Business Class, Shuttle
More Detail
  • Aircraft: Airbus A320
  • Callsign: F-KIDA2
  • Departure Timezone: America/New_York
  • Arrival Timezone: America/Chicago
  • Current Time in Atlanta: Thursday 2026-03-19 16:51 PM
  • Current Time in Houston: Thursday 2026-03-19 15:51 PM

United Airlines UA521 Flight Statistics

United Airlines
United Airlines
FLIGHT NO UA521
AIRPLANE Airbus A320
ON TIME 9
DELAYED 5
CANCELLED 0
ON TIME 25
DELAYED 5
CANCELLED 0
ON TIME 49
DELAYED 10
CANCELLED 0
ON TIME 65
DELAYED 12
CANCELLED 0
Last 14 days flight data
14 30 60 90
On Time Rate

United Airlines UA521 Flight Schedule and Histories

Time Departure Arrival Actual departure Actual arrival
Tue 17 Mar
Arrived On time
Atlanta (ATL) 2026-03-17T15:57
Houston (IAH) 2026-03-17T17:25
2026-03-17T16:04
2026-03-17T17:21
Mon 16 Mar
Scheduled Delayed by 2h 23m
Atlanta (ATL) 2026-03-16T15:57
Houston (IAH) 2026-03-16T17:25
Fri 13 Mar
Scheduled On time
Atlanta (ATL) 2026-03-13T15:57
Houston (IAH) 2026-03-13T17:25
Wed 04 Mar
Arrived On time
Atlanta (ATL) 2026-03-04T18:43
Houston (IAH) 2026-03-04T23:12
2026-03-04T18:37
2026-03-04T23:12
Mon 02 Mar
Scheduled On time
Atlanta (ATL) 2026-03-02T16:02
Houston (IAH) 2026-03-02T17:32
Fri 27 Feb
Scheduled On time
Atlanta (ATL) 2026-02-27T16:02
Houston (IAH) 2026-02-27T17:32
Thu 26 Feb
Scheduled On time
Atlanta (ATL) 2026-02-26T16:02
Houston (IAH) 2026-02-26T17:32
Fri 20 Feb
Departed On time
Atlanta (ATL) 2026-02-20T18:43
Houston (IAH) 2026-02-20T23:12
2026-02-20T18:43
Mon 16 Feb
Departed On time
Atlanta (ATL) 2026-02-16T18:43
Houston (IAH) 2026-02-16T23:12
2026-02-16T18:44
Sun 15 Feb
Departed On time
Atlanta (ATL) 2026-02-15T16:02
Houston (IAH) 2026-02-15T17:32
2026-02-15T16:05

Flight routes similar to United Airlines UA521

Airline Flight no Departure Arrival
United Airlines UA425
United Airlines 		19/03/2026
11:43 		1 hours 51 minutes
13:13
United Airlines UA532
United Airlines 		19/03/2026
07:00 		2 hours 16 minutes
08:27
Delta DL1284
Delta 		19/03/2026
19:53 		2 hours 16 minutes
21:09
Delta DL1131
Delta 		19/03/2026
16:30 		2 hours 19 minutes
17:49
Delta DL1601
Delta 		19/03/2026
22:40 		2 hours 19 minutes
23:59
United Airlines UA213
United Airlines 		19/03/2026
09:10 		2 hours 31 minutes
10:41
Spirit Airlines NK1155
Spirit Airlines 		19/03/2026
09:17 		2 hours 19 minutes
10:36
Air France AF5638
Air France 		19/03/2026
22:40 		2 hours 19 minutes
23:59

United Airlines Flight UA521 FAQs

What is the scheduled flight duration for United Airlines UA521 flight?

On average, nonstop flight takes 2 hour(s) 28 minutes, with the flight distance of 1108 km (688 miles).

What is the current status of United Airlines UA521 flight?

The current status of flight United Airlines UA521 is Departed On time.

What type of aircraft is used for the United Airlines UA521 flight?

All United Airlines UA521 flights are operated using Airbus A320 aircraft.

When does the flight United Airlines UA521 arrive?

Flight United Airlines UA521 arrives at 17:25.

Which terminal the flight United Airlines UA521 is arriving at?

Flight United Airlines UA521 arrives in George Bush Intercontinental Airport at Terminal D.

How many United Airlines UA521 flights are operated a week?

7 flights per week. The Flight United Airlines UA521 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday .