Is UA644 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/Denver)
22 min late
Official source · Updated
Departure
Denver
DEN
Actual
Sep 18
Arrival
Portland
PDX
Actual
Sep 18
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- 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.
Service date: · Scheduled departure date (America/Chicago)
8 min early
Official source · Updated
Departure
Dallas-Fort Worth
DFW
Actual
Sep 18
Arrival
Denver
DEN
Actual
Sep 18
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- 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.
- 22 min late
DEN → PDX
- 8 min early
DFW → DEN
- 3 min early
DEN → PDX
- 25 min early
DFW → DEN
- 12 min early
DEN → PDX
Flight history and details
Aug 19, 2026 — Sep 18, 2026
- Observed arrivals
- 46
- Arrivals over 15 minutes late
- 5
- Observed cancellations
- 1
- Observed occurrences
- 56
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 18, 2026Arrived | Denver | Portland | 22 | |
| Sep 18, 2026Arrived | Dallas-Fort Worth | Denver | -8 | |
| Sep 17, 2026Arrived | Denver | Portland | -3 | |
| Sep 17, 2026Arrived | Dallas-Fort Worth | Denver | -25 | |
| Sep 16, 2026Arrived | Denver | Portland | -12 | |
| Sep 16, 2026Arrived | Dallas-Fort Worth | Denver | -18 | |
| Sep 15, 2026Arrived | Denver | Portland | -4 | |
| Sep 14, 2026Arrived | Dallas-Fort Worth | Denver | 3 | |
| Sep 12, 2026Arrived | Denver | Portland | -11 | |
| Sep 12, 2026Arrived | Dallas-Fort Worth | Denver | -18 | |
| Sep 11, 2026Arrived | Denver | Portland | -7 | |
| Sep 11, 2026Arrived | Dallas-Fort Worth | Denver | 0 | |
| Sep 10, 2026Arrived | Dallas-Fort Worth | Denver | 330 | |
| Sep 9, 2026Arrived | Denver | Portland | -4 | |
| Sep 9, 2026Arrived | Dallas-Fort Worth | Denver | 6 | |
| Sep 8, 2026Arrived | Denver | Portland | -15 | |
| Sep 8, 2026Arrived | Dallas-Fort Worth | Denver | -6 | |
| Sep 7, 2026Arrived | Denver | Portland | -10 | |
| Sep 7, 2026Arrived | Dallas-Fort Worth | Denver | -24 | |
| Sep 6, 2026Arrived | Denver | Portland | -5 | |
| Sep 6, 2026Arrived | Dallas-Fort Worth | Denver | 0 | |
| Sep 5, 2026Arrived | Denver | Portland | -17 | |
| Sep 5, 2026Arrived | Dallas-Fort Worth | Denver | 15 | |
| Sep 4, 2026Arrived | Denver | Portland | -15 | |
| Sep 4, 2026Arrived | Dallas-Fort Worth | Denver | -19 | |
| Sep 3, 2026Cancelled | Dallas-Fort Worth | Denver | Not available | Not available |
| Sep 2, 2026Arrived | Dallas-Fort Worth | Denver | -29 | |
| Sep 1, 2026Arrived | Denver | Portland | -17 | |
| Sep 1, 2026Arrived | Dallas-Fort Worth | Denver | 1 | |
| Aug 31, 2026Arrived | Denver | Portland | -20 | |
| Aug 31, 2026Arrived | Dallas-Fort Worth | Denver | 1 | |
| Aug 30, 2026Arrived | Denver | Portland | 0 | |
| Aug 30, 2026Arrived | Dallas-Fort Worth | Denver | -21 | |
| Aug 29, 2026Arrived | Denver | Portland | -13 | |
| Aug 29, 2026Arrived | Dallas-Fort Worth | Denver | 7 | |
| Aug 28, 2026Arrived | Denver | Portland | 30 | |
| Aug 28, 2026Arrived | Dallas-Fort Worth | Denver | -34 | |
| Aug 27, 2026Arrived | Denver | Portland | 2 | |
| Aug 27, 2026Arrived | Dallas-Fort Worth | Denver | -25 | |
| Aug 26, 2026Arrived | Denver | Portland | -9 | |
| Aug 26, 2026Arrived | Dallas-Fort Worth | Denver | -35 | |
| Aug 25, 2026Arrived | Denver | Portland | -25 | |
| Aug 25, 2026Arrived | Dallas-Fort Worth | Denver | 24 | |
| Aug 24, 2026Arrived | Denver | Portland | -20 | |
| Aug 23, 2026Arrived | Denver | Portland | -8 | |
| Aug 23, 2026Arrived | Dallas-Fort Worth | Denver | 121 |