Route on-time record
SLC to ORD: most on-time flights and the best time to fly
Salt Lake City (Salt Lake City International Airport) to Chicago (Chicago O'Hare International Airport). 3,173 nonstop flights in Jun 2025 to May 2026, 75% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was American 1037 at 6:20 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SLC → ORD
Salt Lake City to Chicago: 3,173 nonstop flights a year
On time (12 months)
75%
Cancelled
1.0%
avg delay 23 min
Best time to leave
Before 9 AM
88% on time vs 66% 3 to 6 PM
Most reliable airline
SkyWest
77% 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 · American 1037
6:20 AM → 10:39 AM3h 19m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as American 687; its record covers all of them.
89%
chance on time
- On time (history)
- 92%
- Cancelled
- 2.2%
- Avg arrival delay
- 8 min
- Arrived on time 92% of the time (130 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 66%).
Moderate track record · 130 flights
Find American 1037 fares Opens this date on Aviasales#2 · Delta 2247
8:00 AM → 12:18 PM3h 18m nonstop
Local times, typical schedule. Last flown 2026-05-06.
85%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 86% of the time (340 flights, Jun 2025 to May 2026).
- Never cancelled in 340 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 66%).
Strong track record · 340 flights
Find Delta 2247 fares Opens this date on Aviasales#3 · United 2343
8:00 AM → 12:20 PM3h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 66%).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 2343 fares Opens this date on Aviasales#4 · Delta 879
7:45 AM → 11:52 AM3h 07m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 84% of the time (25 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 66%).
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find Delta 879 fares Opens this date on Aviasales#5 · SkyWest 5635 · sold as United Express, Delta Connection, American Eagle or Alaska
5:10 AM → 9:41 AM3h 31m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 90% of the time (10 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 66%).
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find 5:10 AM flight fares Opens this date on Aviasales#6 · United 1502
7:20 AM → 11:36 AM3h 16m nonstop
Local times, typical schedule. Last flown 2026-05-20.
82%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.5%
- Avg arrival delay
- 22 min
- Arrived on time 82% of the time (187 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 66%).
Moderate track record · 187 flights
Find United 1502 fares Opens this date on Aviasales#7 · American 1327
6:00 AM → 10:22 AM3h 22m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 66%).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find American 1327 fares Opens this date on Aviasales#8 · United 1776
12:34 PM → 4:59 PM3h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 1776 fares Opens this date on Aviasales#9 · United 1382
12:44 PM → 5:01 PM3h 17m nonstop
Local times, typical schedule. Last flown 2026-05-20.
75%
chance on time
- On time (history)
- 75%
- Cancelled
- 1.1%
- Avg arrival delay
- 25 min
- Arrived on time 75% of the time (346 flights, Jun 2025 to May 2026).
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 346 flights
Find United 1382 fares Opens this date on Aviasales#10 · American 2616
1:29 PM → 5:59 PM3h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 2862; its record covers all of them.
74%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 20 min
- Arrived on time 80% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
- 75% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 54 flights
Find American 2616 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)77%
125 flights · 77% on time as flown · 0.9% cancel
- Delta Air Lines76%
1,010 flights · 77% on time as flown · 0.6% cancel
- United Airlines75%
1,068 flights · 76% on time as flown · 0.9% cancel
- American Airlines72%
934 flights · 74% on time as flown · 1.5% cancel
- Envoy Air (sold as American Eagle)69%
36 flights · 61% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
1,090 flights · avg delay 12 min
- Noon to 3 PM70%
1,082 flights · avg delay 30 min
- 3 to 6 PM66%
933 flights · avg delay 28 min
Best day: Tuesday (82%). Worst: Sunday (78%).
Smarter routing
Nearby airports that run more on time
SLC → MDW 84% chance on time
Salt Lake City International Airport to Chicago Midway International Airport · 617 flights a year · 15 mi from your airports · yours: 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
- Airline (crew, maintenance, boarding)35%
- Air traffic control and airport volume35%
- Late-arriving aircraft25%
- Severe weather6%
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 ORD questions
- What time of day is best to fly SLC to ORD?
- Before 9 AM: 88% of flights arrived on time, against 66% for departures 3 to 6 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 ORD?
- SkyWest, with a season-adjusted 77% chance of operating and arriving on time over 125 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 ORD?
- July (72% on time); the best was September (86%), 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
- ORD to SLC (return)
- SLC to DEN 77%
- SLC to PHX 84%
- SLC to SEA 79%
- SLC to LAX 86%
- SLC to DFW 78%
- SLC to LAS 78%
- SLC to SFO 72%
- 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