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UA1746
|
Houston (HOU)
Atlanta (ATL)
Atlanta (ATL)Scheduled: 15:01
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UA521 Aircraft Details
According to Trip.com real-time data, the UA521 flight flying from Atlanta to Boston on 5/18/2026 is operated by the aircraft model Boeing 737-700. This aircraft has been in service for 1y, 8m. The aircraft is equipped with Up to 148 seats.

Boeing 737-700
Punctuality (Departure)
70%
Punctuality (Arrival)
97%
Early on average
8 minutes
Age
1y, 8m
Seats
Up to 148
Flight Distance
--
Economy
Business
First
Premium Economy
In-Flight Services
None
Live TV
Wi-Fi is available
No power outlets are available
Seat Information
79 cm
More legroom than on 81% of flights
--
Seat width
105°
Reclining Angle
--
Seat layout example
In-Flight Services
Snacks
Live TV
Wi-Fi is available
Power outlet
Seat Information
97 cm
More legroom than on 90% of flights
53 cm
Seat width better than on 10% of flights
135°
Reclining Angle
--
Seat layout example
In-Flight Services
Snacks
Entertainment available, please bring your own device
Wi-Fi is available
Power outlet
Seat Information
97 cm
More legroom than on 33% of flights
53 cm
Seat width better than on 67% of flights
135°
Reclining Angle
--
Seat layout example
In-Flight Services
Snacks
Live TV
Wi-Fi is available
Power outlet
Seat Information
91 cm
More legroom than on 81% of flights
43 cm
Seat width
120°
Reclining Angle
--
Seat layout example
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Recent Flight History for UA521
Trip.com historical records show that the last UA521 flight departed on Sun, May 17 from ATL at approximately 15:57. This flight is expected to arrrive in BOS at 23:35.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Wed, May 13 | Atlanta (ATL) | Boston (BOS) | B38M | 15:57 | 23:35 | Scheduled |
| Thu, May 14 | Atlanta (ATL) | Boston (BOS) | 737 | 15:57 | 23:35 | Scheduled |
| Fri, May 15 | Atlanta (ATL) | Boston (BOS) | B38M | 15:57 | 23:35 | Scheduled |
| Sat, May 16 | Houston (IAH) | Boston (BOS) | B38M | 18:37 | 23:35 | Scheduled |
| Sun, May 17 | Atlanta (ATL) | Boston (BOS) | B38M | 15:57 | 23:35 | Scheduled |
| Mon, May 18 | Atlanta (ATL) | Boston (BOS) | B38M | 15:57 | 23:35 | Scheduled |
| Tue, May 19 | Atlanta (ATL) | Boston (BOS) | 737 | 15:57 | 23:35 | Scheduled |
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UA521 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA521 is 70% (Late on average 34 minutes), and the on-time arrival rate is 97% (Early on average 8 minutes).
On-Time Departures
Punctuality
70%
Late on average 34 minutes
Early
0%
On time
70%
30 mins late
10%
60 mins late
10%
90 mins late
10%
Cancelled
0%
On-Time Arrivals
Punctuality
97%
Early on average 8 minutes
Early
70%
On time
27%
30 mins late
0%
60 mins late
3%
90 mins late
0%
Cancelled
0%
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Arrival Info: Boston Weather & Current Time

Mostly clear
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15°C - 30°C
Weather forecast for your arrival day
0 hour time difference
Time on arrival: Atlanta 23:35| Boston 23:35
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