UA4573 United Airlines - Flight Status
Below, you can find details about United Airlines flight UA4573, which currently operates between the airports of Houston - Houston George Bush Intercontinental Airport (Airport Code IAH) and Saint Louis - St Louis Lambert International Airport (Airport Code STL).
This flight data pertains specifically to the flight's details for Tuesday, July 21, 2026.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA4573
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA4573
UA4573 On Time performance:
73
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays Flight Status
UA4573 United Airlines from Houston
Scheduled - On-time
Flight Status for Tuesday July 21, 2026
This flight was also scheduled for Yesterday (July 20, 2026). See it here
Scheduled - On-time
Flight Status for Tuesday July 21, 2026
Airline information
United Airlines
Equipment: Canadair (Bombardier) Regional Jet 550
Departure
Houston (IAH)
July 21, 2026
Houston George Bush Intercontinental Airport
Estimated Departure Time:
06:28 pm
Terminal:
B
Gate:
B67
Scheduled Departure Time: 06:28 pm
Arrival
Saint Louis (STL)
July 21, 2026
St Louis Lambert International Airport
Estimated Arrival Time:
08:40 pm
Terminal:
1
Gate:
A16
Scheduled Arrival Time: 08:40 pm
Baggage: 6
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.saint-louis-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.
Codeshare Flights
This flight is shared with other airlines, this means that these other flights are the same:
- CM1705 - Copa Airlines
- NZ6901 - Air New Zealand
- VA8324 - Virgin Australia
Additional Information
Which is the frequency of flight UA4573?
The flight UA4573 is scheduled to flight on daily basis.
Which is the distance of flight UA4573?
The distance between the two airports is 668 miles.
Which is the flight time of flight UA4573?
The scheduled flight time gate to gate is: 02:12 hours.
The real flight time gate to gate on average is: 02:10 hours.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
The flight UA4573 is scheduled to flight on daily basis.
Which is the distance of flight UA4573?
The distance between the two airports is 668 miles.
Which is the flight time of flight UA4573?
The scheduled flight time gate to gate is: 02:12 hours.
The real flight time gate to gate on average is: 02:10 hours.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
Alternative Flights
The following airline serve the same route between Houston and Saint Louis:
United Airlines - Flight Number: UA5397. (On Time performance: 75 - Average Delay: 23 minutes)
United Airlines - Flight Number: UA5397. (On Time performance: 75 - Average Delay: 23 minutes)
Punctuality and delays
We have gathered data from recent months and present below an analysis of how timely the flights have been.
Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from July 01, 2026 to July 12, 2026, we have obtained these figures.
Total number of flights: 11
On Time: 8 ( 73 % )
Moderate Delay: 0 ( 0 % )
Significant Delay: 1 ( 9 % )
Major Delay: 2 ( 18 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 49 minutes.
Total number of flights: 11
On Time: 8 ( 73 % )
Moderate Delay: 0 ( 0 % )
Significant Delay: 1 ( 9 % )
Major Delay: 2 ( 18 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 49 minutes.
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Last Past Flights UA4573
Date
Departure
Arrival
Duration
Aircraft
Status
Monday
20 July
20 July
06:21 pm
Houston (IAH)
Houston (IAH)
08:31 pm
Saint Louis (STL)
Saint Louis (STL)
02h 10min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Sunday
19 July
19 July
08:25 pm
Houston (IAH)
Houston (IAH)
10:55 pm
Saint Louis (STL)
Saint Louis (STL)
02h 30min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Saturday
18 July
18 July
06:27 pm
Houston (IAH)
Houston (IAH)
08:30 pm
Saint Louis (STL)
Saint Louis (STL)
02h 03min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Friday
17 July
17 July
06:30 pm
Houston (IAH)
Houston (IAH)
08:34 pm
Saint Louis (STL)
Saint Louis (STL)
02h 04min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Thursday
16 July
16 July
06:23 pm
Houston (IAH)
Houston (IAH)
08:25 pm
Saint Louis (STL)
Saint Louis (STL)
02h 02min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Wednesday
15 July
15 July
06:24 pm
Houston (IAH)
Houston (IAH)
08:14 pm
Saint Louis (STL)
Saint Louis (STL)
01h 50min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Tuesday
14 July
14 July
11:50 pm
Houston (IAH)
Houston (IAH)
02:09 am
Saint Louis (STL)
Saint Louis (STL)
02h 19min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Monday
13 July
13 July
08:58 pm
Houston (IAH)
Houston (IAH)
11:20 pm
Saint Louis (STL)
Saint Louis (STL)
02h 22min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Sunday
12 July
12 July
06:28 pm
Houston (IAH)
Houston (IAH)
08:37 pm
Saint Louis (STL)
Saint Louis (STL)
02h 09min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Saturday
11 July
11 July
06:22 pm
Houston (IAH)
Houston (IAH)
08:31 pm
Saint Louis (STL)
Saint Louis (STL)
02h 09min
Canadair (Bomb
Canadair (Bomb
Landed - On-time