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.
IAH → PBI
Houston to West Palm Beach: 432 nonstop flights a year
On time (12 months)
83%
Cancelled
1.2%
avg delay 11 min
Best time to leave
No clear winner
Most reliable airline
United
82% 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 · United 1345
12:20 PM → 3:57 PM2h 37m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2034; its record covers all of them.
82%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.8%
- Avg arrival delay
- 11 min
- Arrived on time 82% of the time (124 flights, Jun 2025 to May 2026).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside PBI's trouble window: 84% of its 31 ground stops and delay programs started between 11 AM and 5 PM.
Moderate track record · 124 flights
Find United 1345 fares Opens this date on Aviasales#2 · United 2237
6:50 PM → 10:28 PM2h 38m nonstop
Local times, typical schedule. Last flown 2026-04-29. Same departure also flew as United 1657; its record covers all of them.
82%
chance on time
- On time (history)
- 81%
- Cancelled
- 4.4%
- Avg arrival delay
- 13 min
- Arrived on time 81% of the time (43 flights, Jun 2025 to May 2026).
- Cancelled 4.4% of the time (2 of 45).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
- 60% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 43 flights
Find United 2237 fares Opens this date on Aviasales#3 · United 2747
7:00 PM → 10:38 PM2h 38m nonstop
Local times, typical schedule. Last flown 2026-05-20.
78%
chance on time
- On time (history)
- 72%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 72% of the time (18 flights, Jun 2025 to May 2026).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
- 58% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (18 flights), so its score leans on the airline's record at this hour.
Limited track record · 18 flights
Find United 2747 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines82%
431 flights · 83% on time as flown · 1.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Noon to 3 PM82%
229 flights · avg delay 11 min
- 6 to 9 PM85%
171 flights · avg delay 10 min
Best day: Wednesday (83%). Worst: Sunday (70%).
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