Route on-time record
LAS to PDX: most on-time flights and the best time to fly
Las Vegas (Harry Reid International Airport) to Portland (Portland International Airport). 3,029 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was Alaska 596 at 7:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
LAS → PDX
Las Vegas to Portland: 3,029 nonstop flights a year
On time (12 months)
79%
Cancelled
0.5%
avg delay 13 min
Best time to leave
Before 9 AM
91% on time vs 62% after 9 PM
Most reliable airline
Spirit
85% chance on time
Lowest nonstop fare seen in the next two months: $90 (Southwest 1937 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 · Alaska 596
7:00 AM → 9:27 AM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.5%
- Avg arrival delay
- 6 min
- Arrived on time 90% of the time (194 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; After 9 PM: 62%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Moderate track record · 194 flights
Find Alaska 596 fares Opens this date on Aviasales#2 · Alaska 1467
11:00 AM → 1:30 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.6%
- Avg arrival delay
- 7 min
- Arrived on time 88% of the time (356 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
Strong track record · 356 flights
Find Alaska 1467 fares Opens this date on Aviasales#3 · Southwest 2380
7:40 AM → 10:00 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 87% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; After 9 PM: 62%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
Limited track record · 54 flights
Find Southwest 2380 fares Opens this date on Aviasales#4 · Southwest 251
11:45 AM → 2:10 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
81%
chance on time
- On time (history)
- 87%
- Cancelled
- 6.3%
- Avg arrival delay
- 7 min
- Arrived on time 87% of the time (15 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 251 fares Opens this date on Aviasales#5 · Alaska 779
6:18 PM → 8:50 PM2h 29m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.9%
- Avg arrival delay
- 11 min
- Arrived on time 81% of the time (349 flights, Jun 2025 to May 2026).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- 56% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 349 flights
Find Alaska 779 fares Opens this date on Aviasales#6 · Alaska 101
7:55 PM → 10:17 PM2h 22m nonstop
Local times, typical schedule. Last flown 2026-03-16.
81%
chance on time
- On time (history)
- 70%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 70% of the time (10 flights, Jun 2025 to May 2026).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- 64% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find Alaska 101 fares Opens this date on Aviasales#7 · Alaska 756
2:07 PM → 4:38 PM2h 31m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.3%
- Avg arrival delay
- 17 min
- Arrived on time 77% of the time (349 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- 52% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 349 flights
Find Alaska 756 fares Opens this date on Aviasales#8 · Frontier 1105
6:30 AM → 8:59 AM2h 29m nonstop
Local times, typical schedule. Last flown 2026-05-30.
76%
chance on time
- On time (history)
- 76%
- Cancelled
- 1.9%
- Avg arrival delay
- 15 min
- Arrived on time 76% of the time (102 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; After 9 PM: 62%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- 55% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 102 flights
Find Frontier 1105 fares Opens this date on Aviasales#9 · Southwest 1926
3:50 PM → 6:20 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 2886; its record covers all of them.
72%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 81% of the time (16 flights, Jun 2025 to May 2026).
- Departs inside LAS's trouble window: 51% of its 104 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 1926 fares Opens this date on Aviasales#10 · Southwest 1093
9:15 PM → 11:35 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-05.
71%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 78% of the time (18 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (After 9 PM: 62% on time; Before 9 AM: 91%).
- Departs outside LAS's trouble window (10 AM to 4 PM, when 51% of its 104 ground stops and delay programs started).
- Short track record (18 flights), so its score leans on the airline's record at this hour.
Limited track record · 18 flights
Find Southwest 1093 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Spirit Airlines85%
188 flights · 87% on time as flown · 0.5% cancel
- Alaska Airlines82%
1,523 flights · 83% on time as flown · 0.6% cancel
- Frontier Airlines76%
168 flights · 76% on time as flown · 0.9% cancel
- Southwest Airlines74%
1,150 flights · 74% on time as flown · 0.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
651 flights · avg delay 6 min
- 9 AM to noon85%
648 flights · avg delay 8 min
- Noon to 3 PM77%
480 flights · avg delay 15 min
- 3 to 6 PM70%
344 flights · avg delay 20 min
- 6 to 9 PM76%
640 flights · avg delay 15 min
- After 9 PM62%
266 flights · avg delay 20 min
Best day: Saturday (85%). Worst: Friday (74%).
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 aircraft55%
- Airline (crew, maintenance, boarding)32%
- Air traffic control and airport volume10%
- Severe weather3%
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
LAS to PDX questions
- What time of day is best to fly LAS to PDX?
- Before 9 AM: 91% of flights arrived on time, against 62% for departures after 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 LAS to PDX?
- Spirit, with a season-adjusted 85% chance of operating and arriving on time over 188 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 LAS to PDX?
- July (69% on time); the best was November (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 LAS
- PDX to LAS (return)
- LAS to LAX 79%
- LAS to DEN 77%
- LAS to SAN 68%
- LAS to PHX 78%
- LAS to SFO 66%
- LAS to SEA 82%
- LAS to ORD 77%
- LAS to DFW 81%
- LAS to ATL 84%
- LAS to SNA 82%
- LAS to SMF 79%
- LAS to BUR 80%
Live status: FAA delays and ground stops