Route on-time record
SLC to PHX: most on-time flights and the best time to fly
Salt Lake City (Salt Lake City International Airport) to Phoenix (Phoenix Sky Harbor International Airport). 5,752 nonstop flights in Jun 2025 to May 2026, 84% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was Southwest 1599 at 6:15 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SLC → PHX
Salt Lake City to Phoenix: 5,752 nonstop flights a year
On time (12 months)
84%
Cancelled
0.6%
avg delay 13 min
Best time to leave
Before 9 AM
93% on time vs 70% 6 to 9 PM
Most reliable airline
Delta
87% 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 · Southwest 1599
6:15 AM → 6:55 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 4276; its record covers all of them.
96%
chance on time
- On time (history)
- 100%
- Cancelled
- 1.1%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (87 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 70%).
Moderate track record · 87 flights
Find Southwest 1599 fares Opens this date on Aviasales#2 · Delta 1447
7:50 AM → 8:35 AM1h 44m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 94%
- Cancelled
- 1.7%
- Avg arrival delay
- 4 min
- Arrived on time 94% of the time (357 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 70%).
Strong track record · 357 flights
Find Delta 1447 fares Opens this date on Aviasales#3 · SkyWest 6327 · sold as United Express, Delta Connection, American Eagle or Alaska
8:23 AM → 9:18 AM1h 55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.3%
- Avg arrival delay
- 9 min
- Arrived on time 92% of the time (364 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 70%).
Strong track record · 364 flights
Find 8:23 AM flight fares Opens this date on Aviasales#4 · Southwest 457
9:30 AM → 10:10 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-04-06.
91%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 100% of the time (15 flights, Jun 2025 to May 2026).
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 457 fares Opens this date on Aviasales#5 · SkyWest 6244 · sold as United Express, Delta Connection, American Eagle or Alaska
5:23 PM → 6:13 PM1h 50m nonstop
Local times, typical schedule. Last flown 2026-05-20.
90%
chance on time
- On time (history)
- 93%
- Cancelled
- 2.3%
- Avg arrival delay
- 4 min
- Arrived on time 93% of the time (43 flights, Jun 2025 to May 2026).
- Lands inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (43 flights), so its score leans on the airline's record at this hour.
Limited track record · 43 flights
Find 5:23 PM flight fares Opens this date on Aviasales#6 · Southwest 1008
7:50 AM → 8:30 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 93% of the time (15 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 70%).
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 1008 fares Opens this date on Aviasales#7 · Southwest 1010
9:40 AM → 10:25 AM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-29.
89%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 91% of the time (23 flights, Jun 2025 to May 2026).
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 1010 fares Opens this date on Aviasales#8 · Delta 1451
5:45 PM → 6:22 PM1h 42m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 89% of the time (243 flights, Jun 2025 to May 2026).
- Never cancelled in 244 scheduled flights.
- Lands inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 243 flights
Find Delta 1451 fares Opens this date on Aviasales#9 · American 3165
11:03 AM → 11:47 AM1h 44m nonstop
Local times, typical schedule. Last flown 2026-04-06.
88%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 93% of the time (30 flights, Jun 2025 to May 2026).
- Never cancelled in 30 scheduled flights.
- Short track record (30 flights), so its score leans on the airline's record at this hour.
Limited track record · 30 flights
Find American 3165 fares Opens this date on Aviasales#10 · SkyWest 6378 · sold as United Express, Delta Connection, American Eagle or Alaska
5:16 PM → 6:15 PM1h 59m nonstop
Local times, typical schedule. Last flown 2026-04-06.
87%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 89% of the time (70 flights, Jun 2025 to May 2026).
- Never cancelled in 70 scheduled flights.
- Lands inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 70 flights
Find 5:16 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines87%
1,709 flights · 87% on time as flown · 0.5% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)86%
1,116 flights · 87% on time as flown · 0.3% cancel
- American Airlines85%
296 flights · 85% on time as flown · 0.4% cancel
- Envoy Air (sold as American Eagle)84%
115 flights · 84% on time as flown · 0.7% cancel
- Southwest Airlines80%
1,859 flights · 81% on time as flown · 0.6% cancel
- Frontier Airlines79%
657 flights · 80% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
1,397 flights · avg delay 8 min
- 9 AM to noon87%
1,034 flights · avg delay 9 min
- Noon to 3 PM84%
817 flights · avg delay 18 min
- 3 to 6 PM83%
1,216 flights · avg delay 12 min
- 6 to 9 PM70%
688 flights · avg delay 20 min
- After 9 PM79%
600 flights · avg delay 14 min
Best day: Tuesday (86%). Worst: Sunday (81%).
Smarter routing
Nearby airports that run more on time
PVU → AZA 86% chance on time
Provo Municipal Airport to Mesa Gateway Airport · 705 flights a year · 64 mi from your airports · yours: 84%
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 aircraft45%
- Airline (crew, maintenance, boarding)41%
- Air traffic control and airport volume12%
- 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
SLC to PHX questions
- What time of day is best to fly SLC to PHX?
- Before 9 AM: 93% of flights arrived on time, against 70% 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 SLC to PHX?
- Delta, with a season-adjusted 87% chance of operating and arriving on time over 1,709 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 SLC to PHX?
- July (76% on time); the best was September (89%), 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 SLC
- PHX to SLC (return)
- SLC to DEN 77%
- SLC to SEA 79%
- SLC to LAX 86%
- SLC to DFW 78%
- SLC to LAS 78%
- SLC to SFO 72%
- SLC to ORD 75%
- SLC to ATL 86%
- SLC to SAN 84%
- SLC to PDX 88%
- SLC to SMF 86%
- SLC to IAH 85%
Live status: FAA delays and ground stops