Route on-time record
GEG to SEA: most on-time flights and the best time to fly
Spokane (Spokane International Airport) to Seattle (Seattle–Tacoma International Airport). 5,280 nonstop flights in Jun 2025 to May 2026, 85% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was SkyWest 4137 at 6:10 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
GEG → SEA
Spokane to Seattle: 5,280 nonstop flights a year
On time (12 months)
85%
Cancelled
1.0%
avg delay 9 min
Best time to leave
Before 9 AM
93% on time vs 78% 6 to 9 PM
Most reliable airline
Delta
91% chance on time
Lowest nonstop fare seen in the next two months: $256 (Alaska 360 on 2026-10-22). 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 4137 · sold as United Express, Delta Connection, American Eagle or Alaska
6:10 AM → 7:40 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
95%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.3%
- Avg arrival delay
- 3 min
- Arrived on time 96% of the time (296 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 78%).
Strong track record · 296 flights
Find 6:10 AM flight fares Opens this date on Aviasales#2 · Delta 2218
5:00 AM → 6:19 AM1h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31.
94%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 95% of the time (37 flights, Jun 2025 to May 2026).
- Never cancelled in 37 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 78%).
- Short track record (37 flights), so its score leans on the airline's record at this hour.
Limited track record · 37 flights
Find Delta 2218 fares Opens this date on Aviasales#3 · Alaska 340
5:00 AM → 6:11 AM1h 11m nonstop
Local times, typical schedule. Last flown 2026-05-12. Same departure also flew as Alaska 139; its record covers all of them.
93%
chance on time
- On time (history)
- 98%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 98% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 78%).
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find Alaska 340 fares Opens this date on Aviasales#4 · SkyWest 4145 · sold as United Express, Delta Connection, American Eagle or Alaska
3:25 PM → 4:45 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-06.
92%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.6%
- Avg arrival delay
- 5 min
- Arrived on time 93% of the time (337 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.
Strong track record · 337 flights
Find 3:25 PM flight fares Opens this date on Aviasales#5 · SkyWest 3911 · sold as United Express, Delta Connection, American Eagle or Alaska
5:00 AM → 6:24 AM1h 24m nonstop
Local times, typical schedule. Last flown 2026-05-06. Same departure also flew as SkyWest 3974; its record covers all of them.
91%
chance on time
- On time (history)
- 93%
- Cancelled
- 1.3%
- Avg arrival delay
- 3 min
- Arrived on time 93% of the time (74 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 78%).
Moderate track record · 74 flights
Find 5:00 AM flight fares Opens this date on Aviasales#6 · Delta 1084
6:15 AM → 7:36 AM1h 21m nonstop
Local times, typical schedule. Last flown 2026-05-06. Same departure also flew as Delta 1010; its record covers all of them.
90%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 90% of the time (61 flights, Jun 2025 to May 2026).
- Never cancelled in 61 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 78%).
Moderate track record · 61 flights
Find Delta 1084 fares Opens this date on Aviasales#7 · SkyWest 3857 · sold as United Express, Delta Connection, American Eagle or Alaska
5:37 PM → 7:05 PM1h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 3284; its record covers all of them.
89%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 94% of the time (51 flights, Jun 2025 to May 2026).
- Never cancelled in 51 scheduled flights.
- 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 (51 flights), so its score leans on the airline's record at this hour.
Limited track record · 51 flights
Find 5:37 PM flight fares Opens this date on Aviasales#8 · Alaska 360
6:00 AM → 7:16 AM1h 16m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.5%
- Avg arrival delay
- 5 min
- Arrived on time 91% of the time (216 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 78%).
Strong track record · 216 flights
Find Alaska 360 fares Opens this date on Aviasales#9 · SkyWest 3832 · sold as United Express, Delta Connection, American Eagle or Alaska
7:45 PM → 9:06 PM1h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 90%
- Cancelled
- 1.4%
- Avg arrival delay
- 8 min
- Arrived on time 90% of the time (278 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 78% on time; Before 9 AM: 93%).
- 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 7:45 PM flight fares Opens this date on Aviasales#10 · SkyWest 3790 · sold as United Express, Delta Connection, American Eagle or Alaska
7:15 AM → 8:43 AM1h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 91%
- Cancelled
- 1.4%
- Avg arrival delay
- 15 min
- Arrived on time 91% of the time (145 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 78%).
Moderate track record · 145 flights
Find 7:15 AM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines91%
343 flights · 94% on time as flown · 1.1% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)87%
3,089 flights · 88% on time as flown · 1.0% cancel
- Alaska Airlines78%
1,848 flights · 79% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
1,803 flights · avg delay 6 min
- 9 AM to noon80%
1,054 flights · avg delay 10 min
- Noon to 3 PM81%
854 flights · avg delay 11 min
- 3 to 6 PM85%
906 flights · avg delay 9 min
- 6 to 9 PM78%
663 flights · avg delay 13 min
Best day: Tuesday (88%). Worst: Friday (82%).
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)37%
- Late-arriving aircraft27%
- Air traffic control and airport volume18%
- Severe weather18%
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
GEG to SEA questions
- What time of day is best to fly GEG to SEA?
- Before 9 AM: 93% of flights arrived on time, against 78% 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 GEG to SEA?
- Delta, with a season-adjusted 91% chance of operating and arriving on time over 343 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 GEG to SEA?
- January (78% on time); the best was April (90%), 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 GEG
- SEA to GEG (return)
- GEG to DEN 83%
- GEG to SLC 91%
- GEG to PHX 85%
- GEG to PDX 88%
- GEG to LAS 85%
- GEG to SFO 77%
- GEG to LAX 91%
- GEG to MSP 91%
- GEG to ORD 67%
- GEG to SMF 87%
- GEG to DFW 79%
- GEG to ATL 86%
Live status: FAA delays and ground stops