Route on-time record
DEN to GEG: most on-time flights and the best time to fly
Denver (Denver International Airport) to Spokane (Spokane International Airport). 2,061 nonstop flights in Jun 2025 to May 2026, 75% arrived within 15 minutes and 0.3% were cancelled. The most reliable flight number was SkyWest 4735 at 1:35 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DEN → GEG
Denver to Spokane: 2,061 nonstop flights a year
On time (12 months)
75%
Cancelled
0.3%
avg delay 14 min
Best time to leave
Noon to 3 PM
90% on time vs 52% after 9 PM
Most reliable airline
SkyWest
85% 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 4735 · sold as United Express, Delta Connection, American Eagle or Alaska
1:35 PM → 3:15 PM2h 40m nonstop
Local times, typical schedule. Last flown 2026-05-20.
95%
chance on time
- On time (history)
- 98%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 98% of the time (53 flights, Jun 2025 to May 2026).
- Never cancelled in 53 scheduled flights.
- Leaves in this route's most on-time window (Noon to 3 PM: 90% on time; After 9 PM: 52%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Limited track record · 53 flights
Find 1:35 PM flight fares Opens this date on Aviasales#2 · United 324
1:46 PM → 3:12 PM2h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 100% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Noon to 3 PM: 90% on time; After 9 PM: 52%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 324 fares Opens this date on Aviasales#3 · Frontier 3357
10:12 AM → 11:38 AM2h 26m nonstop
Local times, typical schedule. Last flown 2026-05-29.
84%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 84% of the time (121 flights, Jun 2025 to May 2026).
- Never cancelled in 121 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Moderate track record · 121 flights
Find Frontier 3357 fares Opens this date on Aviasales#4 · Southwest 1567
8:30 AM → 9:50 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2006; its record covers all of them.
83%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 85% of the time (88 flights, Jun 2025 to May 2026).
- Never cancelled in 88 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Moderate track record · 88 flights
Find Southwest 1567 fares Opens this date on Aviasales#5 · United 295
11:15 AM → 12:40 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 81% of the time (364 flights, Jun 2025 to May 2026).
- Never cancelled in 365 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Strong track record · 364 flights
Find United 295 fares Opens this date on Aviasales#6 · Southwest 2191
2:45 PM → 4:05 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-30.
74%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Noon to 3 PM: 90% on time; After 9 PM: 52%).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 2191 fares Opens this date on Aviasales#7 · United 778
7:49 PM → 9:11 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
69%
chance on time
- On time (history)
- 69%
- Cancelled
- 0.3%
- Avg arrival delay
- 19 min
- Arrived on time 69% of the time (343 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 343 flights
Find United 778 fares Opens this date on Aviasales#8 · United 744
4:01 PM → 5:26 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-03-27.
67%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.0%
- Avg arrival delay
- 28 min
- Arrived on time 64% of the time (14 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 72% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (14 flights), so its score leans on the airline's record at this hour.
Limited track record · 14 flights
Find United 744 fares Opens this date on Aviasales#9 · Southwest 2176
3:25 PM → 4:45 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
60%
chance on time
- On time (history)
- 38%
- Cancelled
- 0.0%
- Avg arrival delay
- 25 min
- Arrived on time 38% of the time (8 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 2176 fares Opens this date on Aviasales#10 · Southwest 3954
8:50 PM → 10:10 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
52%
chance on time
- On time (history)
- 41%
- Cancelled
- 3.0%
- Avg arrival delay
- 38 min
- Arrived on time 41% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- 55% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 32 flights
Find Southwest 3954 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)85%
250 flights · 90% on time as flown · 0.6% cancel
- Frontier Airlines81%
121 flights · 84% on time as flown · 0.2% cancel
- United Airlines75%
833 flights · 74% on time as flown · 0.4% cancel
- Southwest Airlines70%
857 flights · 70% on time as flown · 0.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM86%
360 flights · avg delay 6 min
- 9 AM to noon82%
490 flights · avg delay 8 min
- Noon to 3 PM90%
284 flights · avg delay 5 min
- 3 to 6 PM62%
203 flights · avg delay 22 min
- 6 to 9 PM66%
512 flights · avg delay 20 min
- After 9 PM52%
212 flights · avg delay 29 min
Best day: Wednesday (77%). Worst: Friday (71%).
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 aircraft52%
- Airline (crew, maintenance, boarding)35%
- Air traffic control and airport volume13%
- Severe weather1%
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
DEN to GEG questions
- What time of day is best to fly DEN to GEG?
- Noon to 3 PM: 90% of flights arrived on time, against 52% for departures after 9 PM.
- Which airline is most on time from DEN to GEG?
- SkyWest, with a season-adjusted 85% chance of operating and arriving on time over 250 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 DEN to GEG?
- July (58% on time); the best was September (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 DEN
- GEG to DEN (return)
- DEN to PHX 75%
- DEN to SLC 77%
- DEN to LAX 79%
- DEN to LAS 75%
- DEN to SEA 73%
- DEN to ORD 70%
- DEN to DFW 75%
- DEN to SAN 76%
- DEN to MSP 78%
- DEN to ATL 80%
- DEN to SFO 68%
- DEN to AUS 76%
Live status: FAA delays and ground stops