Informational Guide to Boston Logan Airport (BOS) - NON OFFICIAL

UA558 United Airlines - Flight Status

Codeshare Flights
The flight AZ4388 from ITA Airways (AZ) is a codeshare flight operated by United Airlines (UA) under the flight number UA558. Check this page for details about flight UA558.

Below, you can find details about United Airlines flight UA558, which currently operates between the airports of Denver - Denver International Airport (Airport Code DEN) and Boston - Boston Logan International Airport (Airport Code BOS).
This flight data pertains specifically to the flight's details for Sunday, October 04, 2026.

UA558 On Time performance:
92
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

UA558 United Airlines from Denver

Scheduled - On-time
Flight Status for Sunday October 04, 2026
This flight was also scheduled for Yesterday (October 02, 2026). See it here
This flight is also scheduled for Today (October 03, 2026). See it here

Airline information

United Airlines
United Airlines
Equipment: Airbus A321neo

Departure

Denver (DEN)
October 04, 2026
Denver International Airport
Estimated Departure Time:
07:45 am
Terminal:
-
Gate:
B25
Scheduled Departure Time: 07:45 am

Arrival

Boston (BOS)
October 04, 2026
Boston Logan International Airport
Estimated Arrival Time:
01:47 pm
Terminal:
B
Gate:
-
Scheduled Arrival Time: 01:47 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.boston-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:

- AZ4388 - ITA Airways

Additional Information

Which is the frequency of flight UA558?
The flight UA558 is scheduled to flight on daily basis.

Which is the distance of flight UA558?
The distance between the two airports is 1750 miles.

Which is the flight time of flight UA558?
The scheduled flight time gate to gate is: 04:02 hours.
The real flight time gate to gate on average is: 03:52 hours.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Denver: 2026-10-03 05:24:14
Current Time in Boston: 2026-10-03 07:24:14

Alternative Flights

The following airlines serves the same route between Denver and Boston:

JetBlue
- Flight Number: B6394. (On Time performance: 46 - Average Delay: 62 minutes)
- Flight Number: B6494. (On Time performance: 66 - Average Delay: 25 minutes)
- Flight Number: B6994. (On Time performance: 40 - Average Delay: 48 minutes)

Delta Air Lines
- Flight Number: DL499. (On Time performance: 55 - Average Delay: 37 minutes)

United Airlines
- Flight Number: UA1232. (On Time performance: 64 - Average Delay: 23 minutes)
- Flight Number: UA1356. (On Time performance: 60 - Average Delay: 43 minutes)
- Flight Number: UA1912. (On Time performance: 52 - Average Delay: 70 minutes)
- Flight Number: UA2656. (On Time performance: 86 - Average Delay: 8 minutes)
- Flight Number: UA597. (On Time performance: 45 - Average Delay: 56 minutes)
- Flight Number: UA731. (On Time performance: 44 - Average Delay: 26 minutes)

Southwest Airlines
- Flight Number: WN1250. (On Time performance: 21 - Average Delay: 42 minutes)
- Flight Number: WN192. (On Time performance: 20 - Average Delay: 72 minutes)
- Flight Number: WN2279. (On Time performance: 63 - Average Delay: 18 minutes)
- Flight Number: WN233. (On Time performance: 25 - Average Delay: 68 minutes)
- Flight Number: WN3652. (On Time performance: 53 - Average Delay: 22 minutes)
- Flight Number: WN697. (On Time performance: 47 - 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.

In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from July 01, 2026 to September 30, 2026, we have obtained these figures.
Total number of flights: 85
On Time: 78 ( 92 % )
Moderate Delay: 2 ( 2 % )
Significant Delay: 0 ( 0 % )
Major Delay: 3 ( 4 % )
Canceled: 0 ( 0 % )
Diverted: 2 ( 2 % )

Average Delay: 4 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from April 01, 2026 to September 30, 2026. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.

Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from October 02, 2025 to September 30, 2026. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.

Last Past Flights UA558

Date
Departure
Arrival
Duration
Aircraft
Status
Friday
02 October
07:42 am
Denver (DEN)
01:18 pm
Boston (BOS)
03h 36min
Boeing 737-900
Boeing 737-900
Landed - On-time
Thursday
01 October
07:41 am
Denver (DEN)
01:29 pm
Boston (BOS)
03h 48min
Airbus A321neo
Airbus A321neo
Landed - On-time
Wednesday
30 September
07:34 am
Denver (DEN)
01:25 pm
Boston (BOS)
03h 51min
Airbus A321neo
Airbus A321neo
Landed - On-time
Tuesday
29 September
07:36 am
Denver (DEN)
01:46 pm
Boston (BOS)
04h 10min
Airbus A321neo
Airbus A321neo
Landed - On-time
Monday
28 September
01:00 pm
Denver (DEN)
06:58 pm
Boston (BOS)
03h 58min
Airbus A321neo
Airbus A321neo
Landed - Delayed
Sunday
27 September
09:15 am
Denver (DEN)
03:24 pm
Boston (BOS)
04h 09min
Airbus A321neo
Airbus A321neo
Landed - Delayed
Saturday
26 September
07:38 am
Denver (DEN)
01:33 pm
Boston (BOS)
03h 55min
Airbus A321neo
Airbus A321neo
Landed - On-time
Friday
25 September
09:27 am
()
03:25 pm
Boston (BOS)
Boeing 737-900
Boeing 737-900
Landed - DIVERTED
Friday
25 September
07:45 am
Denver (DEN)
01:18 pm
Denver (DEN)
Boeing 737-900
Boeing 737-900
Landed - DIVERTED
Thursday
24 September
07:44 am
Denver (DEN)
01:48 pm
Boston (BOS)
Airbus A321neo
Airbus A321neo
Landed - On-time