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.
SJC → SEA
San Jose to Seattle: 4,379 nonstop flights a year
On time (12 months)
83%
Cancelled
0.9%
avg delay 10 min
Best time to leave
Before 9 AM
90% on time vs 66% after 9 PM
Most reliable airline
SkyWest
88% chance on time
Lowest nonstop fare seen in the next two months: $89 (Alaska 1304 on 2026-11-07). 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 · Alaska 754
6:15 AM → 8:39 AM2h 24m nonstop
Local times, typical schedule. Last flown 2026-05-12. Same departure also flew as Alaska 1399; its record covers all of them.
95%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; After 9 PM: 66%).
- Short track record (47 flights), so its score leans on the airline's record at this hour.
Limited track record · 47 flights
Find Alaska 754 fares Opens this date on Aviasales#2 · SkyWest 4041 · sold as United Express, Delta Connection, American Eagle or Alaska
7:15 AM → 9:38 AM2h 29m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 93% of the time (342 flights, Jun 2025 to May 2026).
- Never cancelled in 342 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; After 9 PM: 66%).
Strong track record · 342 flights
Find 7:15 AM flight fares Opens this date on Aviasales#3 · Southwest 4195
6:20 AM → 8:40 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-27.
93%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (16 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; After 9 PM: 66%).
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 4195 fares Opens this date on Aviasales#4 · Southwest 4660
6:00 AM → 8:25 AM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
92%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (15 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; After 9 PM: 66%).
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 4660 fares Opens this date on Aviasales#5 · Southwest 3628
6:35 AM → 8:50 AM2h 15m nonstop
Local times, typical schedule. Last flown 2026-04-01.
91%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; After 9 PM: 66%).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 3628 fares Opens this date on Aviasales#6 · SkyWest 3736 · sold as United Express, Delta Connection, American Eagle or Alaska
11:40 AM → 2:00 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 92% of the time (167 flights, Jun 2025 to May 2026).
- Never cancelled in 167 scheduled flights.
Moderate track record · 167 flights
Find 11:40 AM flight fares Opens this date on Aviasales#7 · Alaska 1311
10:22 AM → 12:40 PM2h 18m nonstop
Local times, typical schedule. Last flown 2026-05-12.
89%
chance on time
- On time (history)
- 92%
- Cancelled
- 3.1%
- Avg arrival delay
- 4 min
- Arrived on time 92% of the time (282 flights, Jun 2025 to May 2026).
- Cancelled 3.1% of the time (9 of 291).
Strong track record · 282 flights
Find Alaska 1311 fares Opens this date on Aviasales#8 · Southwest 1097
6:45 AM → 9:05 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-30.
88%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 87% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; After 9 PM: 66%).
- Short track record (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Southwest 1097 fares Opens this date on Aviasales#9 · SkyWest 4132 · sold as United Express, Delta Connection, American Eagle or Alaska
8:50 PM → 11:22 PM2h 32m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 96% of the time (25 flights, Jun 2025 to May 2026).
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find 8:50 PM flight fares Opens this date on Aviasales#10 · SkyWest 3785 · sold as United Express, Delta Connection, American Eagle or Alaska
3:25 PM → 5:40 PM2h 16m nonstop
Local times, typical schedule. Last flown 2026-04-12.
88%
chance on time
- On time (history)
- 91%
- Cancelled
- 2.8%
- Avg arrival delay
- 3 min
- Arrived on time 91% of the time (35 flights, Jun 2025 to May 2026).
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
- Short track record (35 flights), so its score leans on the airline's record at this hour.
Limited track record · 35 flights
Find 3:25 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)88%
1,539 flights · 89% on time as flown · 0.3% cancel
- Alaska Airlines81%
1,889 flights · 82% on time as flown · 1.8% cancel
- Southwest Airlines77%
948 flights · 76% on time as flown · 0.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM90%
991 flights · avg delay 7 min
- 9 AM to noon88%
912 flights · avg delay 7 min
- Noon to 3 PM83%
768 flights · avg delay 11 min
- 3 to 6 PM84%
751 flights · avg delay 11 min
- 6 to 9 PM74%
817 flights · avg delay 14 min
- After 9 PM66%
140 flights · avg delay 14 min
Best day: Tuesday (88%). Worst: Thursday (81%).
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