United Airlines
Is UA8203 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Actual departure date; scheduled departure unavailable (Europe/London)
78 min late
Official source · Updated
Departure
London
LHR
Actual
Sep 7
Arrival
Toronto
YYZ
Actual
Sep 7
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
Operating flight: ACA855
Service date: · Scheduled departure date (UTC)
13 min late
Official source · Updated
Departure
Colorado Springs
COS
Actual
Sep 7
Arrival
Denver
DEN
Actual
Sep 6
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 20 min late
LHR → YYZ
- 21 min late
LHR → YYZ
- 3 min late
LHR → YYZ
- 111 min late
LHR → YYZ
- 92 min late
LHR → YYZ
Flight history and details
Aug 19, 2026 — Sep 18, 2026
- Observed arrivals
- 16
- Arrivals over 15 minutes late
- 5
- Observed cancellations
- 0
- Observed occurrences
- 16
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 17, 2026Arrived | London | Toronto | 20 | |
| Sep 16, 2026Arrived | London | Toronto | 21 | |
| Sep 15, 2026Arrived | London | Toronto | 3 | |
| Sep 14, 2026Arrived | London | Toronto | 111 | |
| Sep 13, 2026Arrived | London | Toronto | 92 | |
| Sep 12, 2026Arrived | London | Toronto | 5 | |
| Sep 11, 2026Arrived | London | Toronto | 8 | |
| Sep 10, 2026Arrived | London | Toronto | -8 | |
| Sep 9, 2026Arrived | London | Toronto | -19 | |
| Sep 8, 2026Arrived | London | Toronto | -3 | |
| Sep 7, 2026Arrived | London | Toronto | 78 | |
| Sep 7, 2026Arrived | Colorado Springs | Denver | 13 | |
| Sep 6, 2026Arrived | London | Toronto | -47 | |
| Sep 5, 2026Arrived | London | Toronto | 0 | |
| Sep 4, 2026Arrived | Chicago | Kansas City | -6 | |
| Sep 4, 2026Arrived | London | Toronto | -9 |