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Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
EWR → DEN
Newark to Denver: 3,299 nonstop flights a year
On time (12 months)
78%
Cancelled
1.3%
avg delay 17 min
Best time to leave
Before 9 AM
88% on time vs 67% after 9 PM
Most reliable airline
United
77% chance on time
Lowest nonstop fare seen in the next two months: $241 (United 407 on 2026-11-15). 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 · United 670
6:00 AM → 8:23 AM4h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 95% of the time (88 flights, Jun 2025 to May 2026).
- Never cancelled in 88 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; After 9 PM: 67%).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
Moderate track record · 88 flights
Find United 670 fares Opens this date on Aviasales#2 · United 1999
12:07 PM → 2:33 PM4h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 91%
- Cancelled
- 2.3%
- Avg arrival delay
- 6 min
- Arrived on time 91% of the time (86 flights, Jun 2025 to May 2026).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 86 flights
Find United 1999 fares Opens this date on Aviasales#3 · United 1758
7:55 AM → 10:20 AM4h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2336; its record covers all of them.
82%
chance on time
- On time (history)
- 89%
- Cancelled
- 2.4%
- Avg arrival delay
- 9 min
- Arrived on time 89% of the time (83 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; After 9 PM: 67%).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
Moderate track record · 83 flights
Find United 1758 fares Opens this date on Aviasales#4 · United 577
1:25 PM → 3:48 PM4h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (10 flights, Jun 2025 to May 2026).
- Departs inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find United 577 fares Opens this date on Aviasales#5 · United 1067
11:55 AM → 2:26 PM4h 31m nonstop
Local times, typical schedule. Last flown 2026-05-20.
80%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 90% of the time (21 flights, Jun 2025 to May 2026).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (21 flights), so its score leans on the airline's record at this hour.
Limited track record · 21 flights
Find United 1067 fares Opens this date on Aviasales#6 · United 2455
9:35 AM → 12:07 PM4h 32m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 371; its record covers all of them.
79%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.5%
- Avg arrival delay
- 12 min
- Arrived on time 81% of the time (195 flights, Jun 2025 to May 2026).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
Moderate track record · 195 flights
Find United 2455 fares Opens this date on Aviasales#7 · United 2120
2:10 PM → 4:40 PM4h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.6%
- Avg arrival delay
- 16 min
- Arrived on time 80% of the time (305 flights, Jun 2025 to May 2026).
- Departs inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
- 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 · 305 flights
Find United 2120 fares Opens this date on Aviasales#8 · United 415
7:48 AM → 10:29 AM4h 41m nonstop
Local times, typical schedule. Last flown 2026-03-28.
78%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 20 min
- Arrived on time 75% of the time (24 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; After 9 PM: 67%).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find United 415 fares Opens this date on Aviasales#9 · United 2058
3:30 PM → 6:08 PM4h 38m nonstop
Local times, typical schedule. Last flown 2026-03-28.
73%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.0%
- Avg arrival delay
- 21 min
- Arrived on time 79% of the time (24 flights, Jun 2025 to May 2026).
- Departs inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find United 2058 fares Opens this date on Aviasales#10 · United 1792
9:24 PM → 11:59 PM4h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
70%
chance on time
- On time (history)
- 71%
- Cancelled
- 1.7%
- Avg arrival delay
- 26 min
- Arrived on time 71% of the time (348 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (After 9 PM: 67% on time; Before 9 AM: 88%).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
Strong track record · 348 flights
Find United 1792 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines77%
3,299 flights · 78% on time as flown · 1.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
795 flights · avg delay 7 min
- 9 AM to noon81%
537 flights · avg delay 13 min
- Noon to 3 PM81%
568 flights · avg delay 13 min
- 3 to 6 PM69%
714 flights · avg delay 27 min
- 6 to 9 PM71%
497 flights · avg delay 24 min
- After 9 PM67%
188 flights · avg delay 30 min
Best day: Tuesday (82%). Worst: Friday (74%).
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