No delays reported for F9 4277 (IAD → LAS) as of 6:45 PM ET. It arrived on time 59.3% of the time in June-August 2026. When it was late, the average delay was 49 minutes. 1.1% of flights were cancelled. Right now there are no reported delays at IAD, LAS.
Looks on time
Next leg IAD → LAS, scheduled 9:50 AM local time. No delays at IAD right now.
Cancellation risk: Low 1.1% of its flights were cancelled in June-August 2026.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Frontier for official times.
Before you fly
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| IAD → LAS Washington, DC to Las Vegas, NV | 9:50 AM → 11:45 AM | 59% |
Local times. Schedules change; check your booking.
How reliable is F9 4277?
| Arrived on time (within 15 min) | 59.3% |
| Average delay when late | 49 min |
| Cancelled | 1.1% |
| Diverted | 0% |
| Flights tracked | 92 |
Best and worst days to fly F9 4277
F9 4277 was most reliable on Thursdays (77% on time) and least reliable on Tuesdays (31%).
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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 IAD → LAS
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 4277 delayed today?
Right now there are no reported delays at IAD, LAS. Checked 6:45 PM ET. For this flight's gate and exact status, check the Frontier app.
Is F9 4277 usually on time?
F9 4277 arrived within 15 minutes of schedule 59.3% of the time in June-August 2026, with an average delay of 49 minutes when late.
How often is F9 4277 cancelled?
1.1% of F9 4277 flights were cancelled in June-August 2026.