Route on-time record
ISP to TPA: most on-time flights and the best time to fly
Islip (Long Island MacArthur Airport) to Tampa (Tampa International Airport). 473 nonstop flights in Jun 2025 to May 2026, 71% arrived within 15 minutes and 3.8% were cancelled. The most reliable flight number was Southwest 1156 at 12:15 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
ISP → TPA
Islip to Tampa: 473 nonstop flights a year
On time (12 months)
71%
Cancelled
3.8%
avg delay 23 min
Best time to leave
9 AM to noon
78% on time vs 60% 3 to 6 PM
Most reliable airline
Frontier
70% 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 1156
12:15 PM → 3:15 PM3h 00m nonstop
Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 2814; its record covers all of them.
75%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 83% of the time (18 flights, Jun 2025 to May 2026).
- Lands inside TPA's trouble window: 76% of its 25 ground stops and delay programs started between noon and 6 PM.
- Short track record (18 flights), so its score leans on the airline's record at this hour.
Limited track record · 18 flights
Find Southwest 1156 fares Opens this date on Aviasales#2 · Frontier 3323
8:31 PM → 11:40 PM3h 06m nonstop
Local times, typical schedule. Last flown 2026-05-30.
72%
chance on time
- On time (history)
- 75%
- Cancelled
- 1.5%
- Avg arrival delay
- 18 min
- Arrived on time 75% of the time (65 flights, Jun 2025 to May 2026).
- 63% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 65 flights
Find Frontier 3323 fares Opens this date on Aviasales#3 · Frontier 3355
5:45 AM → 8:51 AM3h 09m nonstop
Local times, typical schedule. Last flown 2026-04-14.
69%
chance on time
- On time (history)
- 72%
- Cancelled
- 5.0%
- Avg arrival delay
- 27 min
- Arrived on time 72% of the time (210 flights, Jun 2025 to May 2026).
- Cancelled 5.0% of the time (11 of 221).
- 52% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 210 flights
Find Frontier 3355 fares Opens this date on Aviasales#4 · JetBlue 1605
1:44 PM → 4:36 PM2h 52m nonstop
Local times, typical schedule. Last flown 2026-04-27.
62%
chance on time
- On time (history)
- 64%
- Cancelled
- 4.9%
- Avg arrival delay
- 16 min
- Arrived on time 64% of the time (78 flights, Jun 2025 to May 2026).
- Cancelled 4.9% of the time (4 of 82).
- Lands inside TPA's trouble window: 76% of its 25 ground stops and delay programs started between noon and 6 PM.
Moderate track record · 78 flights
Find JetBlue 1605 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Frontier Airlines70%
288 flights · 73% on time as flown · 4.0% cancel
- Southwest Airlines70%
103 flights · 71% on time as flown · 3.0% cancel
- JetBlue65%
82 flights · 64% on time as flown · 4.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM76%
98 flights · avg delay 24 min
- 9 AM to noon78%
91 flights · avg delay 11 min
- Noon to 3 PM68%
173 flights · avg delay 29 min
- 3 to 6 PM60%
65 flights · avg delay 25 min
- 6 to 9 PM74%
41 flights · avg delay 18 min
Best day: Tuesday (79%). Worst: Sunday (68%).
Smarter routing
Nearby airports that run more on time
HPN → TPA 89% chance on time
Westchester County Airport to Tampa International Airport · 365 flights a year · 37 mi from your airports · yours: 68%
EWR → SRQ 78% chance on time
Newark Liberty International Airport to Sarasota Bradenton International Airport · 937 flights a year · 96 mi from your airports · yours: 68%
EWR → TPA 78% chance on time
Newark Liberty International Airport to Tampa International Airport · 2,648 flights a year · 56 mi from your airports · yours: 68%
LGA → SRQ 77% chance on time
LaGuardia Airport to Sarasota Bradenton International Airport · 561 flights a year · 80 mi from your airports · yours: 68%
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 aircraft48%
- Air traffic control and airport volume28%
- Airline (crew, maintenance, boarding)22%
- 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
ISP to TPA questions
- What time of day is best to fly ISP to TPA?
- 9 AM to noon: 78% of flights arrived on time, against 60% for departures 3 to 6 PM.
- Which airline is most on time from ISP to TPA?
- Frontier, with a season-adjusted 70% chance of operating and arriving on time over 288 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 ISP to TPA?
- July (52% on time); the best was October (93%), 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 ISP
- TPA to ISP (return)
- ISP to MCO 72%
- ISP to PBI 71%
- ISP to BWI 84%
- ISP to FLL 68%
Live status: FAA delays and ground stops