About 1 in 4 F9 3972 flights from Phoenix arrived 15+ minutes late, diverted or cancelled over the past year (22%); 1.5% were cancelled. The typical flight landed 9 minutes early.
F9 3972: PHX → DFW
Scheduled to leave Phoenix at 4:39 p.m. local time. Over the past year it arrived on time 78% of the time (201 flights), better than other F9 flights on the route at that hour (68%). Last seen in the data Aug 31, 2026.
Usually Frontier Airlines's last flight of the day from Phoenix to Dallas (54% of days). Frontier Airlines's last PHX–DFW flight was cancelled 2.9% of the time, against 0.7% for its earlier ones. If it's cancelled, the next Frontier Airlines flight is usually around 6:24 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 36 | 72% |
| Tuesday | 27 | 85% |
| Wednesday | 20 | 90% |
| Thursday | 29 | 69% |
| Friday | 34 | 79% |
| Saturday | 28 | 71% |
| Sunday | 27 | 81% |
Why it was late
All flights PHX → DFW · Connecting off F9 3972? Check the risk
Questions
How often is F9 3972 from PHX to DFW late?
Frontier Airlines 3972 from Phoenix, AZ to Dallas/Fort Worth, TX arrived 15 or more minutes late, was diverted or was cancelled on 22% of 201 scheduled flights between September 2025 and August 2026. 1.5% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Frontier Airlines for today's flight. Method.