Route on-time record
TPA to SEA: most on-time flights and the best time to fly
Tampa (Tampa International Airport) to Seattle (Seattle–Tacoma International Airport). 976 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was Delta 1090 at 7:30 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
TPA → SEA
Tampa to Seattle: 976 nonstop flights a year
On time (12 months)
74%
Cancelled
0.8%
avg delay 16 min
Best time to leave
Before 9 AM
82% on time vs 56% 6 to 9 PM
Most reliable airline
Delta
84% chance on time
Lowest nonstop fare seen in the next two months: $146 (Alaska 326 on 2026-10-30). 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 · Delta 1090
7:30 AM → 10:44 AM6h 16m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.8%
- Avg arrival delay
- 11 min
- Arrived on time 87% of the time (359 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 82% on time; 6 to 9 PM: 56%).
- Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 ground stops and delay programs started).
Strong track record · 359 flights
Find Delta 1090 fares Opens this date on Aviasales#2 · Alaska 343
7:19 PM → 10:30 PM6h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
70%
chance on time
- On time (history)
- 89%
- Cancelled
- 5.3%
- Avg arrival delay
- 6 min
- Arrived on time 89% of the time (18 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 56% on time; Before 9 AM: 82%).
- Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 ground stops and delay programs started).
Limited track record · 18 flights
Find Alaska 343 fares Opens this date on Aviasales#3 · Alaska 640
7:00 AM → 10:22 AM6h 22m nonstop
Local times, typical schedule. Last flown 2026-05-31.
70%
chance on time
- On time (history)
- 69%
- Cancelled
- 0.5%
- Avg arrival delay
- 14 min
- Arrived on time 69% of the time (182 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 82% on time; 6 to 9 PM: 56%).
- Departs outside TPA's trouble window (noon to 6 PM, when 76% of its 25 ground stops and delay programs started).
Moderate track record · 182 flights
Find Alaska 640 fares Opens this date on Aviasales#4 · Alaska 326
5:41 PM → 9:05 PM6h 24m nonstop
Local times, typical schedule. Last flown 2026-05-12.
57%
chance on time
- On time (history)
- 56%
- Cancelled
- 1.1%
- Avg arrival delay
- 30 min
- Arrived on time 56% of the time (278 flights, Jun 2025 to May 2026).
- Departs inside TPA's trouble window: 76% of its 25 ground stops and delay programs started between noon and 6 PM.
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Strong track record · 278 flights
Find Alaska 326 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines84%
363 flights · 87% on time as flown · 0.8% cancel
- Alaska Airlines67%
613 flights · 67% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM82%
657 flights · avg delay 11 min
- 3 to 6 PM77%
35 flights · avg delay 27 min
- 6 to 9 PM56%
268 flights · avg delay 28 min
Best day: Wednesday (78%). Worst: Sunday (69%).
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)36%
- Late-arriving aircraft32%
- Air traffic control and airport volume26%
- Severe weather4%
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
TPA to SEA questions
- What time of day is best to fly TPA to SEA?
- Before 9 AM: 82% of flights arrived on time, against 56% for departures 6 to 9 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 TPA to SEA?
- Delta, with a season-adjusted 84% chance of operating and arriving on time over 363 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 TPA to SEA?
- June (62% on time); the best was November (85%), 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 TPA
- SEA to TPA (return)
- TPA to ATL 79%
- TPA to CLT 82%
- TPA to ORD 72%
- TPA to DEN 81%
- TPA to MIA 77%
- TPA to DFW 75%
- TPA to LGA 71%
- TPA to BOS 74%
- TPA to BWI 79%
- TPA to EWR 75%
- TPA to PHL 75%
- TPA to BNA 74%
Most on-time flights from TPA on every route →
Live status: FAA delays and ground stops