Route on-time record
ATY to DEN: most on-time flights and the best time to fly
Watertown (Watertown Regional Airport) to Denver (Denver International Airport). 302 nonstop flights in Jun 2025 to May 2026, 75% arrived within 15 minutes and 0.3% were cancelled. The most reliable flight number was SkyWest 5019 at 6:26 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
ATY → DEN
Watertown to Denver: 302 nonstop flights a year
On time (12 months)
75%
Cancelled
0.3%
avg delay 28 min
Best time to leave
No clear winner
Most reliable airline
SkyWest
75% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · SkyWest 5019 · sold as United Express, Delta Connection, American Eagle or Alaska
6:26 PM → 7:25 PM1h 59m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.5%
- Avg arrival delay
- 24 min
- Arrived on time 76% of the time (209 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 209 flights
Find 6:26 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)75%
302 flights · 75% on time as flown · 0.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 6 to 9 PM75%
300 flights · avg delay 28 min
On time by month
All airlines, Jun 2025 to May 2026. One year of data, so a single stormy month can stand out.
What delays this route
- Airline (crew, maintenance, boarding)47%
- Late-arriving aircraft21%
- Air traffic control and airport volume19%
- Severe weather13%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
ATY to DEN questions
- Which airline is most on time from ATY to DEN?
- SkyWest, with a season-adjusted 75% chance of operating and arriving on time over 302 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on ATY to DEN?
- August (48% on time); the best was March (87%), from one year of data, so one bad storm season can move a month.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from ATY
Live status: FAA delays and ground stops