Route on-time record
SEA to TUS: most on-time flights and the best time to fly
Seattle (Seattle–Tacoma International Airport) to Tucson (Tucson International Airport). 1,065 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was SkyWest 3680 at 8:36 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SEA → TUS
Seattle to Tucson: 1,065 nonstop flights a year
On time (12 months)
81%
Cancelled
0.5%
avg delay 10 min
Best time to leave
Before 9 AM
93% on time vs 72% 3 to 6 PM
Most reliable airline
Delta
82% 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 · SkyWest 3680 · sold as United Express, Delta Connection, American Eagle or Alaska
8:36 AM → 11:51 AM3h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 88% of the time (25 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 72%).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find 8:36 AM flight fares Opens this date on Aviasales#2 · Delta 326
9:25 AM → 12:29 PM3h 04m nonstop
Local times, typical schedule. Last flown 2026-05-06. Same departure also flew as Delta 2251; its record covers all of them.
86%
chance on time
- On time (history)
- 89%
- Cancelled
- 2.4%
- Avg arrival delay
- 10 min
- Arrived on time 89% of the time (82 flights, Jun 2025 to May 2026).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
Moderate track record · 82 flights
Find Delta 326 fares Opens this date on Aviasales#3 · Alaska 638
7:15 PM → 10:17 PM3h 02m nonstop
Local times, typical schedule. Last flown 2026-05-11.
80%
chance on time
- On time (history)
- 80%
- Cancelled
- 1.1%
- Avg arrival delay
- 8 min
- Arrived on time 80% of the time (188 flights, Jun 2025 to May 2026).
- Departs inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Moderate track record · 188 flights
Find Alaska 638 fares Opens this date on Aviasales#4 · Alaska 648
11:37 AM → 2:48 PM3h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.3%
- Avg arrival delay
- 9 min
- Arrived on time 80% of the time (358 flights, Jun 2025 to May 2026).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
Strong track record · 358 flights
Find Alaska 648 fares Opens this date on Aviasales#5 · SkyWest 3110 · sold as United Express, Delta Connection, American Eagle or Alaska
7:22 PM → 10:37 PM3h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 74% of the time (19 flights, Jun 2025 to May 2026).
- Departs inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find 7:22 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines82%
138 flights · 84% on time as flown · 0.9% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)81%
371 flights · 82% on time as flown · 0.1% cancel
- Alaska Airlines80%
556 flights · 80% on time as flown · 0.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
242 flights · avg delay 4 min
- 9 AM to noon81%
481 flights · avg delay 11 min
- 3 to 6 PM72%
32 flights · avg delay 16 min
- 6 to 9 PM73%
303 flights · avg delay 13 min
Best day: Wednesday (83%). Worst: Sunday (76%).
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)47%
- Late-arriving aircraft35%
- Air traffic control and airport volume13%
- Severe weather5%
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
SEA to TUS questions
- What time of day is best to fly SEA to TUS?
- Before 9 AM: 93% of flights arrived on time, against 72% for departures 3 to 6 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 SEA to TUS?
- Delta, with a season-adjusted 82% chance of operating and arriving on time over 138 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 SEA to TUS?
- August (74% on time); the best was April (86%), 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 SEA
- TUS to SEA (return)
- SEA to LAX 83%
- SEA to PHX 79%
- SEA to SFO 69%
- SEA to ANC 74%
- SEA to DEN 77%
- SEA to LAS 77%
- SEA to ORD 75%
- SEA to GEG 81%
- SEA to DFW 77%
- SEA to PDX 82%
- SEA to SAN 78%
- SEA to SMF 81%
Live status: FAA delays and ground stops