Route on-time record
DEN to MKE: most on-time flights and the best time to fly
Denver (Denver International Airport) to Milwaukee (General Mitchell International Airport). 2,335 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 0.3% were cancelled. The most reliable flight number was SkyWest 4802 at 1:30 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DEN → MKE
Denver to Milwaukee: 2,335 nonstop flights a year
On time (12 months)
74%
Cancelled
0.3%
avg delay 19 min
Best time to leave
Before 9 AM
91% on time vs 60% 6 to 9 PM
Most reliable airline
Frontier
80% 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 4802 · sold as United Express, Delta Connection, American Eagle or Alaska
1:30 PM → 5:04 PM2h 34m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 4742; its record covers all of them.
87%
chance on time
- On time (history)
- 97%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 97% of the time (29 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (29 flights), so its score leans on the airline's record at this hour.
Limited track record · 29 flights
Find 1:30 PM flight fares Opens this date on Aviasales#2 · Frontier 1608
3:22 PM → 6:51 PM2h 29m nonstop
Local times, typical schedule. Last flown 2026-04-27.
84%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 86% of the time (69 flights, Jun 2025 to May 2026).
- Never cancelled in 69 scheduled flights.
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 69 flights
Find Frontier 1608 fares Opens this date on Aviasales#3 · United 1836
11:01 AM → 2:28 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 85% of the time (364 flights, Jun 2025 to May 2026).
- Never cancelled in 365 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Strong track record · 364 flights
Find United 1836 fares Opens this date on Aviasales#4 · Southwest 1569
1:15 PM → 4:30 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 1569 fares Opens this date on Aviasales#5 · Southwest 3185
10:25 AM → 1:45 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 87% of the time (46 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (46 flights), so its score leans on the airline's record at this hour.
Limited track record · 46 flights
Find Southwest 3185 fares Opens this date on Aviasales#6 · Southwest 3218
10:15 AM → 1:40 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-30.
80%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 3218 fares Opens this date on Aviasales#7 · Southwest 2215
11:10 AM → 2:25 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
76%
chance on time
- On time (history)
- 79%
- Cancelled
- 6.7%
- Avg arrival delay
- 16 min
- Arrived on time 79% of the time (14 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- 59% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (14 flights), so its score leans on the airline's record at this hour.
Limited track record · 14 flights
Find Southwest 2215 fares Opens this date on Aviasales#8 · Southwest 2348
10:40 AM → 1:55 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-04-04.
76%
chance on time
- On time (history)
- 69%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 69% of the time (13 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Southwest 2348 fares Opens this date on Aviasales#9 · United 1728
5:54 PM → 9:21 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-19. Same departure also flew as United 1485; its record covers all of them.
75%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 20 min
- Arrived on time 80% of the time (75 flights, Jun 2025 to May 2026).
- Never cancelled in 76 scheduled flights.
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 75 flights
Find United 1728 fares Opens this date on Aviasales#10 · Southwest 2787
2:40 PM → 5:55 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-30.
74%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 79% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (47 flights), so its score leans on the airline's record at this hour.
Limited track record · 47 flights
Find Southwest 2787 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Frontier Airlines80%
69 flights · 86% on time as flown · 0.2% cancel
- United Airlines77%
770 flights · 78% on time as flown · 0.1% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)73%
239 flights · 70% on time as flown · 0.1% cancel
- Southwest Airlines71%
1,257 flights · 72% on time as flown · 0.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
173 flights · avg delay 4 min
- 9 AM to noon84%
617 flights · avg delay 8 min
- Noon to 3 PM84%
368 flights · avg delay 9 min
- 3 to 6 PM66%
553 flights · avg delay 26 min
- 6 to 9 PM60%
579 flights · avg delay 33 min
Best day: Wednesday (78%). Worst: Friday (73%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft49%
- Airline (crew, maintenance, boarding)34%
- Air traffic control and airport volume16%
- Severe weather2%
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
DEN to MKE questions
- What time of day is best to fly DEN to MKE?
- Before 9 AM: 91% of flights arrived on time, against 60% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from DEN to MKE?
- Frontier, with a season-adjusted 80% chance of operating and arriving on time over 69 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 DEN to MKE?
- June (63% on time); the best was October (84%), averaged over Jun 2023 to May 2026.
- 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 DEN
- MKE to DEN (return)
- DEN to PHX 75%
- DEN to SLC 77%
- DEN to LAX 79%
- DEN to LAS 75%
- DEN to SEA 73%
- DEN to ORD 70%
- DEN to DFW 75%
- DEN to SAN 76%
- DEN to MSP 78%
- DEN to ATL 80%
- DEN to SFO 68%
- DEN to AUS 76%
Live status: FAA delays and ground stops