United Airlines
UA577 Flight Status
According to Trip.com real-time data, the UA577 flight operated by United Airlines on Sep 12, 2026 is scheduled to fly from St. Louis (STL) to Boston (BOS). The flight is expected to depart at 7:00 AM (local time in St. Louis, UTC-5) and land at 2:22 PM (local time in Boston, UTC-4) .
Fri, Sep 11
Sat, Sep 12
Sun, Sep 13
Access more flight status info on the Trip.com app
Show more
Arrived
The flight has arrived 2m late
6h 22m
EWR
3h 7m
Check-in Counter
--
Boarding Gate
A9
Arrival Gate
B29
Baggage
5
Access more flight status info on the Trip.com app
Show more
Scheduled
Your flight will depart on time.
6h 22m
EWR
3h 5m
Check-in Counter
--
Boarding Gate
A15
Arrival Gate
B29
Baggage
7
Show more
Access more flight status info on the Trip.com app
Show more
Scheduled
Your flight will depart on time.
6h 22m
EWR
2h 29m
Check-in Counter
--
Boarding Gate
A16
Arrival Gate
--
Baggage
--
Show more
Information provided by VariFlight
For real-time updates, please check airport displays or contact your airline.
You can also explore more flights from St. Louis to Boston or track other flights with our flight status tracker.
Track the Previous Flight Status: Scheduled
UA1637
|
New York (NYC)
St. Louis (STL)
St. Louis (STL)
Scheduled: 11:38 PM
fake text
Track incoming flight status with our app
Show more
UA577 Aircraft Details
According to Trip.com real-time data, the UA577 flight flying from St. Louis to Boston on 9/12/2026 is operated by the aircraft model Boeing 737. This aircraft has been in service for 27y, 5m. The aircraft is equipped with 118 seats.
Boeing 737
Punctuality (Departure)
96
%
Punctuality (Arrival)
85
%
Early on average
5 minutes
Age
27y, 5m
Seats
118
Flight Distance
--
Economy
Business
Premium Economy
In-Flight Services
None
Live TV
Wi-Fi is unavailable
No power outlets are available
Seat Information
79 cm
More legroom than on 40% of flights
--
Seat width
105°
Reclining Angle
3-3
Seat layout example
In-Flight Services
Snacks
Live TV
Wi-Fi is unavailable
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
2-2
Seat layout example
In-Flight Services
Snacks
Live TV
Wi-Fi is unavailable
Power outlet
Seat Information
91 cm
More legroom than on 63% of flights
43 cm
Seat width
120°
Reclining Angle
3-3
Seat layout example
See more amenities and seat info in the app
Show more
Flight History for UA577
Trip.com historical records show that the last UA577 flight departed on Fri, Sep 11 from STL at approximately 7:13 AM. This flight is expected to arrrive in BOS at 2:24 PM.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Mon, Sep 7 | St. Louis (STL) | Boston (BOS) | 737 | 7:01 AM | 2:06 PM | Arrived |
| Tue, Sep 8 | St. Louis (STL) | Boston (BOS) | 737 | 7:04 AM | 2:11 PM | Arrived |
| Wed, Sep 9 | St. Louis (STL) | Boston (BOS) | B39M | 7:11 AM | 2:03 PM | Arrived |
| Thu, Sep 10 | St. Louis (STL) | Boston (BOS) | B39M | 7:05 AM | 2:30 PM | Arrived |
| Fri, Sep 11 | St. Louis (STL) | Boston (BOS) | 737 | 7:13 AM | 2:24 PM | Arrived |
| Sat, Sep 12 | St. Louis (STL) | Boston (BOS) | 737 | 7:00 AM | 2:22 PM | Scheduled |
| Sun, Sep 13 | St. Louis (STL) | Boston (BOS) | 737 | 7:00 AM | 2:22 PM | Scheduled |
text.text............fake.row.text............text.........fake row
...text
Check upcoming flights with our app
Show more
UA577 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA577 is 96% (Late on average 9 minutes), and the on-time arrival rate is 85% (Early on average 5 minutes).
On-Time Departures
Punctuality
96
%
Late on average
9 minutes
Early
0
%
On time
96
%
30 mins late
4
%
60 mins late
0
%
90 mins late
0
%
Canceled
0
%
On-Time Arrivals
Punctuality
85
%
Early on average
5 minutes
Early
81
%
On time
4
%
30 mins late
4
%
60 mins late
8
%
90 mins late
4
%
Canceled
0
%
Recommended hotels in Boston
Hotels near Boston Logan International Airport
Hotels near Boston
8.9
/10
283 Reviews
Hilton Boston Logan Airport
East Boston
|
0.26 km from the airport
$313
$307
9.3
/10
41 Reviews
Hyatt Regency Boston Harbor
East Boston
|
0.99 km from the airport
$239
8.8
/10
90 Reviews
Embassy Suites by Hilton Boston at Logan Airport
East Boston
|
1.03 km from the airport
3% off
$230
$224
6.8
/10
88 Reviews
Global Luxury Suites East Boston
East Boston
|
1.69 km from the airport
$221
9.2
/10
108 Reviews
Raffles Boston
Downtown Boston
|
1.83 km from downtown
$708
9.5
/10
54 Reviews
The Newbury Boston
Boston City Center
|
1.31 km from downtown
$910
9.4
/10
120 Reviews
Mandarin Oriental Boston
Downtown Boston
|
2.22 km from downtown
$1,020
9.4
/10
72 Reviews
The Four Seasons Hotel Boston
Boston City Center
|
1.17 km from downtown
$995
Cheap return flights to St. Louis
-
Sun, Oct 18Boston (BOS)St. Louis (STL)
Frontier Airlines
One way15% off$152$129 -
Fri, Oct 2Boston (BOS)St. Louis (STL)
Frontier Airlines
One way14% off$152$130
-
Fri, Sep 25Boston (BOS)St. Louis (STL)
Frontier Airlines
One way14% off$152$131
-
Fri, Oct 16Boston (BOS)St. Louis (STL)
Frontier Airlines
One way10% off$152$137
-
Sun, Oct 25Boston (BOS)St. Louis (STL)
Frontier Airlines
One way9% off$152$139
More Cheap Flights
Frequently Asked Questions
-
What is the current status of flight ua577?
Flight ua577 has not departed yet and is currently on schedule. Scheduled departure 7:00 AM, arrival 2:22 PM (updated Sep 12, 2026). -
Is flight ua577 on time today?
Flight ua577 has not departed yet and is currently on schedule. Scheduled departure is 7:00 AM, with arrival at 2:22 PM. Recheck gate and timing before you head to the airport. -
Has flight ua577 departed yet? What is the departure time?
Flight ua577 is scheduled to depart at 7:00 AM. The latest actual or estimated departure time is 7:00 AM, and the current status is Scheduled (updated Sep 12, 2026). -
When is flight ua577 scheduled to arrive?
Flight ua577 is scheduled to arrive at 2:22 PM. The latest estimated or actual arrival time is 2:22 PM. Status is Scheduled as of Sep 12, 2026. -
What is the gate information for flight ua577?
For flight ua577, the departure terminal is T1 and the boarding gate is A15. Gate assignments can change at short notice—confirm on airport screens before heading to security. -
What is the baggage carousel number for flight ua577?
After arrival, baggage for flight ua577 is expected at carousel 7 in terminal B. Carousel numbers are assigned close to landing and may change—follow airport signs on arrival. -
What route does flight ua577 fly?
Flight ua577 is operated by United Airlines from St. Louis (STL) to Boston (BOS). Typical flight time is about 6 hours22 minutes; operating days may include Saturday. -
How can I check real-time status for flight ua577?
Track flight ua577 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 ua577 is delayed or canceled, what should I do?
If ua577 is delayed or canceled, first confirm the latest status here (Scheduled, updated Sep 12, 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 ua577 departed from St. Louis?
Flight ua577 has not departed from St. Louis (STL) yet and is currently on schedule for 7:00 AM. -
What is the seat configuration for flight ua577?
Flight ua577 usually flies a Boeing 737 with seat layout 3-3. Layouts can differ by aircraft subtype and cabin product—confirm your seat map in Manage Booking after you purchase.
Boston Vacation Packages: Cheap Flights, Hotels & Tours
Hotels
Airport Transfers
Tours & Tickets
Trains
Arrival Info: Boston Weather & Current Time
Mostly clear
|
12°C - 25°C
Weather forecast for your arrival day
1 hour time difference
Time on arrival: St. Louis 13:22
|
Boston 14:22
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