Is UA503 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/New_York)
79 min early
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Boston
BOS
Actual
Sep 19
Arrival
Chicago
ORD
Scheduled
Sep 19
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.
Service date: · Scheduled departure date (America/New_York)
156 min late
Official source · Updated
Departure
Boston
BOS
Scheduled
Sep 19
Arrival
Chicago
ORD
Actual
Sep 19
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 156 min late
BOS → ORD
- 10 min late
BOS → ORD
- 119 min late
BOS → ORD
- 16 min early
BOS → ORD
- 90 min late
BOS → ORD
Flight history and details
Aug 21, 2026 — Sep 20, 2026
- Observed arrivals
- 28
- Arrivals over 15 minutes late
- 7
- Observed cancellations
- 0
- Observed occurrences
- 31
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 19, 2026Arrived | Boston | Chicago | 156 | |
| Sep 18, 2026Arrived | Boston | Chicago | 10 | |
| Sep 17, 2026Arrived | Boston | Chicago | 119 | |
| Sep 16, 2026Arrived | Boston | Chicago | -16 | |
| Sep 15, 2026Arrived | Boston | Chicago | 90 | |
| Sep 14, 2026Arrived | Boston | Chicago | -29 | |
| Sep 13, 2026Arrived | Boston | Chicago | -22 | |
| Sep 12, 2026Arrived | Boston | Chicago | -4 | |
| Sep 11, 2026Arrived | Boston | Chicago | -8 | |
| Sep 10, 2026Arrived | Boston | Chicago | 4 | |
| Sep 9, 2026Arrived | Boston | Chicago | 27 | |
| Sep 8, 2026Arrived | Boston | Chicago | -25 | |
| Sep 7, 2026Arrived | Boston | Chicago | -38 | |
| Sep 6, 2026Arrived | Boston | Chicago | -25 | |
| Sep 5, 2026Arrived | Boston | Chicago | -32 | |
| Sep 4, 2026Arrived | Boston | Chicago | 37 | |
| Sep 3, 2026Arrived | Boston | Chicago | -9 | |
| Sep 2, 2026Arrived | Boston | Chicago | -24 | |
| Sep 1, 2026Arrived | Boston | Chicago | -24 | |
| Aug 31, 2026Arrived | Boston | Chicago | 24 | |
| Aug 30, 2026Arrived | Boston | Chicago | 55 | |
| Aug 29, 2026Arrived | Boston | Chicago | -38 | |
| Aug 28, 2026Arrived | Boston | Chicago | -37 | |
| Aug 27, 2026Arrived | Boston | Chicago | -29 | |
| Aug 26, 2026Arrived | Boston | Chicago | -38 | |
| Aug 25, 2026Arrived | Boston | Chicago | -43 | |
| Aug 24, 2026Arrived | Boston | Chicago | -31 | |
| Aug 23, 2026Arrived | Boston | Chicago | -42 |