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.
TPA → ISP
Tampa to Islip: 470 nonstop flights a year
On time (12 months)
75%
Cancelled
3.0%
avg delay 19 min
Best time to leave
Before 9 AM
92% on time vs 66% after 9 PM
Most reliable airline
Frontier
75% 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 · Frontier 3536
4:44 PM → 7:36 PM2h 52m nonstop
Local times, typical schedule. Last flown 2026-05-30.
80%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 90% of the time (30 flights, Jun 2025 to May 2026).
- Never cancelled in 30 scheduled flights.
- Departs inside TPA's trouble window: 76% of its 25 ground stops and delay programs started between noon and 6 PM.
- 94% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 30 flights
Find Frontier 3536 fares Opens this date on Aviasales#2 · Frontier 3324
7:00 AM → 9:48 AM2h 48m nonstop
Local times, typical schedule. Last flown 2026-04-11.
78%
chance on time
- On time (history)
- 83%
- Cancelled
- 6.0%
- Avg arrival delay
- 11 min
- Arrived on time 83% of the time (93 flights, Jun 2025 to May 2026).
- Cancelled 6.0% of the time (6 of 100).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; After 9 PM: 66%).
- Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 ground stops and delay programs started).
Moderate track record · 93 flights
Find Frontier 3324 fares Opens this date on Aviasales#3 · Frontier 3356
10:37 PM → 1:26 AM2h 49m nonstop
Local times, typical schedule. Last flown 2026-04-12.
72%
chance on time
- On time (history)
- 73%
- Cancelled
- 2.6%
- Avg arrival delay
- 27 min
- Arrived on time 73% of the time (152 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (After 9 PM: 66% on time; Before 9 AM: 92%).
- Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 ground stops and delay programs started).
Moderate track record · 152 flights
Find Frontier 3356 fares Opens this date on Aviasales#4 · Southwest 482
10:25 AM → 1:10 PM2h 45m nonstop
Local times, typical schedule. Last flown 2026-05-30.
69%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
- Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 ground stops and delay programs started).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 482 fares Opens this date on Aviasales#5 · JetBlue 1606
10:15 AM → 12:49 PM2h 34m nonstop
Local times, typical schedule. Last flown 2026-04-27.
68%
chance on time
- On time (history)
- 68%
- Cancelled
- 2.5%
- Avg arrival delay
- 20 min
- Arrived on time 68% of the time (79 flights, Jun 2025 to May 2026).
- Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 ground stops and delay programs started).
Moderate track record · 79 flights
Find JetBlue 1606 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Frontier Airlines75%
286 flights · 78% on time as flown · 3.3% cancel
- Southwest Airlines70%
103 flights · 69% on time as flown · 2.6% cancel
- JetBlue70%
81 flights · 68% on time as flown · 2.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM92%
69 flights · avg delay 4 min
- 9 AM to noon68%
157 flights · avg delay 22 min
- Noon to 3 PM70%
130 flights · avg delay 16 min
- 3 to 6 PM84%
65 flights · avg delay 13 min
- After 9 PM66%
37 flights · avg delay 47 min
Best day: Tuesday (86%). Worst: Sunday (72%).
Smarter routing
Nearby airports that run more on time
SRQ → EWR 85% chance on time
Sarasota Bradenton International Airport to Newark Liberty International Airport · 937 flights a year · 96 mi from your airports · yours: 72%
TPA → JFK 78% chance on time
Tampa International Airport to John F. Kennedy International Airport · 2,304 flights a year · 37 mi from your airports · yours: 72%
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