Route on-time record

PHX to MKE: most on-time flights and the best time to fly

Phoenix (Phoenix Sky Harbor International Airport) to Milwaukee (General Mitchell International Airport). 1,485 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was Southwest 259 at 8:40 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

PHX → MKE

Phoenix to Milwaukee: 1,485 nonstop flights a year

On time (12 months)

74%

Cancelled

0.9%

avg delay 15 min

Best time to leave

Before 9 AM

87% on time vs 61% noon to 3 PM

Most reliable airline

American

79% chance on time

Check PHX to MKE fares

Lowest nonstop fare seen in the next two months: $254 (American 1728 on 2026-10-27). 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 · Southwest 259
8:40 AM → 2:00 PM3h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
On time (history)
91%
Cancelled
1.8%
Avg arrival delay
3 min
- Arrived on time 91% of the time (54 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; Noon to 3 PM: 61%).
- Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
- Short track record (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find Southwest 259 fares Opens this date on Aviasales
#2 · American 2365
8:45 AM → 2:15 PM3h 30m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as American 2977; its record covers all of them.
82%
chance on time
On time (history)
81%
Cancelled
1.5%
Avg arrival delay
10 min
- Arrived on time 81% of the time (196 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; Noon to 3 PM: 61%).
- Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
Moderate track record · 196 flights
Find American 2365 fares Opens this date on Aviasales
#3 · Southwest 3259
7:45 AM → 1:05 PM3h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
79%
chance on time
On time (history)
81%
Cancelled
0.0%
Avg arrival delay
6 min
- Arrived on time 81% of the time (32 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; Noon to 3 PM: 61%).
- Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
Limited track record · 32 flights
Find Southwest 3259 fares Opens this date on Aviasales
#4 · Southwest 4608
5:55 PM → 11:10 PM3h 15m nonstop
Local times, typical schedule. Last flown 2026-05-30.
77%
chance on time
On time (history)
79%
Cancelled
0.0%
Avg arrival delay
14 min
- Arrived on time 79% of the time (24 flights, Jun 2025 to May 2026).
- Departs inside PHX's trouble window: 43% of its 46 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 Southwest 4608 fares Opens this date on Aviasales
#5 · American 1369
4:14 PM → 9:37 PM3h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 3145; its record covers all of them.
77%
chance on time
On time (history)
79%
Cancelled
0.0%
Avg arrival delay
36 min
- Arrived on time 79% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 34 scheduled flights.
- Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (33 flights), so its score leans on the airline's record at this hour.
Limited track record · 33 flights
Find American 1369 fares Opens this date on Aviasales
#6 · American 2055
4:35 PM → 9:54 PM3h 19m nonstop
Local times, typical schedule. Last flown 2026-04-06.
73%
chance on time
On time (history)
74%
Cancelled
3.5%
Avg arrival delay
17 min
- Arrived on time 74% of the time (82 flights, Jun 2025 to May 2026).
- Cancelled 3.5% of the time (3 of 85).
- Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 82 flights
Find American 2055 fares Opens this date on Aviasales
#7 · Southwest 2377
2:15 PM → 7:30 PM3h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
59%
chance on time
On time (history)
58%
Cancelled
3.0%
Avg arrival delay
25 min
- Arrived on time 58% of the time (31 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Leaves in this route's least on-time window (Noon to 3 PM: 61% on time; Before 9 AM: 87%).
- Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 31 flights
Find Southwest 2377 fares Opens this date on Aviasales
#8 · Southwest 3829
12:35 PM → 5:50 PM3h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
59%
chance on time
On time (history)
50%
Cancelled
1.9%
Avg arrival delay
24 min
- Arrived on time 50% of the time (52 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 61% on time; Before 9 AM: 87%).
- Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
- Short track record (52 flights), so its score leans on the airline's record at this hour.
Limited track record · 52 flights
Find Southwest 3829 fares Opens this date on Aviasales
#9 · Southwest 3557
7:40 PM → 12:55 AM3h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
59%
chance on time
On time (history)
55%
Cancelled
6.1%
Avg arrival delay
26 min
- Arrived on time 55% of the time (31 flights, Jun 2025 to May 2026).
- Cancelled 6.1% of the time (2 of 33).
- Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
- 63% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 31 flights
Find Southwest 3557 fares Opens this date on Aviasales
#10 · Southwest 4638
7:50 PM → 1:05 AM3h 15m nonstop
Local times, typical schedule. Last flown 2026-05-29.
53%
chance on time
On time (history)
35%
Cancelled
0.0%
Avg arrival delay
40 min
- Arrived on time 35% of the time (23 flights, Jun 2025 to May 2026).
- Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
- 73% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 4638 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

American Airlines79%
487 flights · 80% on time as flown · 1.3% cancel
Southwest Airlines71%
994 flights · 71% on time as flown · 0.6% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM87%
399 flights · avg delay 6 min
9 AM to noon82%
294 flights · avg delay 8 min
Noon to 3 PM61%
187 flights · avg delay 25 min
3 to 6 PM69%
269 flights · avg delay 21 min
6 to 9 PM62%
333 flights · avg delay 23 min

Best day: Saturday (81%). Worst: Monday (74%).

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 aircraft51%
Airline (crew, maintenance, boarding)37%
Air traffic control and airport volume12%

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

Finding the most reliable connections from PHX to MKE…

PHX to MKE questions

What time of day is best to fly PHX to MKE?: Before 9 AM: 87% of flights arrived on time, against 61% for departures noon to 3 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 PHX to MKE?: American, with a season-adjusted 79% chance of operating and arriving on time over 487 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 PHX to MKE?: July (69% on time); the best was September (85%), 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 PHX

Live status: FAA delays and ground stops

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