Likely delayed: there are delays at F9 3801's airports as of 6:46 PM ET. It arrived on time 47.7% of the time in June-August 2026. When it was late, the average delay was 1h 24m. 4.4% of flights were cancelled. SFO has major delays (wind, max 5 hours and 41 minutes), so this flight is likely to be delayed.
High cancellation risk
Next leg LAS → SFO, scheduled 6:00 PM local time. No delays at LAS right now. Line up a backup option.
4.4% of its flights were cancelled in June-August 2026; SFO has major delays.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Frontier for official times. Live position: adsb.lol (open data, ODbL).
Book a backup seat LAS → SFOThis flight is cancelled often; a refundable backup costs little
What to do now
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| LAS → SFO Las Vegas, NV to San Francisco, CA | 6:00 PM → 7:52 PM | 48% |
Local times. Schedules change; check your booking.
How reliable is F9 3801?
| Arrived on time (within 15 min) | 47.7% |
| Average delay when late | 84 min |
| Cancelled | 4.4% |
| Diverted | 0% |
| Flights tracked | 90 |
Best and worst days to fly F9 3801
F9 3801 was most reliable on Saturdays (75% on time) and least reliable on Mondays (17%).
| Monday | |
| Tuesday | |
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Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by Frontier to the Department of Transportation.
Other flights LAS → SFO
All flights on this route, ranked
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the Frontier app.
Frontier delays and what you're owed · Airline phone numbers
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is F9 3801 delayed today?
SFO has major delays (wind, max 5 hours and 41 minutes), so this flight is likely to be delayed. Checked 6:46 PM ET. For this flight's gate and exact status, check the Frontier app.
Is F9 3801 usually on time?
F9 3801 arrived within 15 minutes of schedule 47.7% of the time in June-August 2026, with an average delay of 84 minutes when late.
How often is F9 3801 cancelled?
4.4% of F9 3801 flights were cancelled in June-August 2026.