ATIS Alerts Smart Flight Search
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.
ORD → DAL
Chicago to Dallas: 622 nonstop flights a year
On time (12 months)
72%
Cancelled
1.0%
avg delay 21 min
Best time to leave
Before 9 AM
93% on time vs 56% 3 to 6 PM
Most reliable airline
Southwest
71% chance on time
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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 3682
4:15 PM → 6:45 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3936; its record covers all of them.
57%
chance on time
- On time (history)
- 52%
- Cancelled
- 3.4%
- Avg arrival delay
- 41 min
- Arrived on time 52% of the time (84 flights, Jun 2025 to May 2026).
- Cancelled 3.4% of the time (3 of 87).
- Leaves in this route's least on-time window (3 to 6 PM: 56% on time; Before 9 AM: 93%).
- Departs inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 84 flights
Find Southwest 3682 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines71%
622 flights · 72% on time as flown · 1.0% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
153 flights · avg delay 4 min
- Noon to 3 PM72%
226 flights · avg delay 18 min
- 3 to 6 PM56%
226 flights · avg delay 36 min
Best day: Monday (79%). Worst: Sunday (73%).
Smarter routing
Nearby airports that run more on time
MDW → DAL 76% chance on time
Chicago Midway International Airport to Dallas Love Field · 2,155 flights a year · 15 mi from your airports · yours: 71%
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