Route profile
PDX→LAS
Flight reliability, delays and best times to fly from Portland to Las Vegas, 763 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 74% of comparable major US routes (4,598 compared)
Calculated from 10,868 flights. How this is calculated
PDX → LAS arrives on time 81.8% of the time; the return trip, LAS → PDX, arrives on time 79.1% of the time, a 2.8-point gap between the two directions of the same city pair.
PDX → LAS spends 22.9 minutes on the ground on a 763-mile trip: 14.4 minutes from pushback to wheels-up at PDX and 8.5 minutes from touchdown to gate at LAS.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
This route holds up about the same all year, a steadier seasonal pattern than 91% of 3,357 comparable routes.
86.8% on time in its best month (November) against 75.7% in its worst (July).
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 3,357 in the comparison.
Why PDX → LAS flights are cancelled
July 2023 – July 2026
PDX → LAS cancelled 106 of 10,868 scheduled flights — about 1 in every 103. The reason filed most often was the airline, 64.2% of the cancellations coded on this route — about 1 in every 160 scheduled flights.
Share of cancellations
Of 106 cancelled departures carrying a reason code.
What each reason means
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
68 cancellations, 64.2% of the total.
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
32 cancellations, 30.2% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
6 cancellations, 5.7% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
106 coded cancellations were recorded on PDX → LAS; the section appears from 50.
When it goes wrong
July 2023 – July 2026
33 min late
against a median of 5 min early
Percentiles over 10,868 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at LAS after arriving from PDX.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 37% | Likely to miss |
| 45 min | 17% | High risk |
| 60 min | 11% | Some risk |
| 90 min | 5.4% | Some risk |
| 120 min | 2.9% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 0.98% of the time and diverts 0.13% of the time, which a late arrival never shows up in.
Chance of missing is the share of 10,748 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 33 minutes late (90th-percentile gate arrival delay), over 10,868 operations.
Any other layover length: connection checker.
Best time to fly
PDX → LAS flights departing 5–9 AM arrived on time 92.8% of the time, against 74.6% for 6–9 PM departures, a gap of 18.2 percentage points.
By departure window
By departure hour
- 12 AM to 4 AM: too few flights to score
- 5 AM: 95.4% on time from 1,048 flights
- 6 AM: 93.0% on time from 419 flights
- 7 AM: 90.0% on time from 872 flights
- 8 AM: 91.9% on time from 286 flights
- 9 AM: 92.1% on time from 461 flights
- 10 AM: 83.3% on time from 1,006 flights
- 11 AM: 82.9% on time from 659 flights
- 12 PM: 78.8% on time from 643 flights
- 1 PM: 72.8% on time from 394 flights
- 2 PM: 79.4% on time from 904 flights
- 3 PM: 72.2% on time from 406 flights
- 4 PM: 78.5% on time from 486 flights
- 5 PM: 75.0% on time from 885 flights
- 6 PM: 70.2% on time from 745 flights
- 7 PM: 78.9% on time from 537 flights
- 8 PM: 77.1% on time from 398 flights
- 9 PM: 74.6% on time from 610 flights
- 10 PM to 11 PM: too few flights to score
Why PDX → LAS runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for PDX → LAS. Only delays of 15 minutes or more are attributed.
Late-arriving aircraft is the largest cause on PDX → LAS, at 43.3%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 92.8% of the time and 6–9 PM departures 74.6%.
How this route holds up in bad weather
July 2023 – July 2026
Bad weather raises cancellations by a similar amount at both ends of PDX to LAS: 2.2 times the normal rate at PDX and 2.4 times at LAS. Cancelled in bad weather against normal hours: PDX 1.7% against 0.8%, LAS 2.0% against 0.8%. Flights that did leave LAS in bad weather arrived on time 58.5% of the time, against 78.5% in normal hours.
Bad weather and normal hours at the airports
Scheduled departures, July 2023 – July 2026| Departures from | PDX | LAS |
|---|---|---|
| Cancelled in bad weather | 1.7% | 2.0% |
| Cancelled in normal hours | 0.8% | 0.8% |
| Arrived on time, bad weather | 84.6% | 58.5% |
| Arrived on time, normal hours | 83.0% | 78.5% |
| Departures in bad weather | 11,286 | 14,522 |
Alaska Airlines (2.1% cancelled against 1.2% for the other carriers at PDX) cancelled more departures from PDX in bad weather than the other carriers there did in the same months. None of the route’s other carriers was clearly better. 2 more carriers fly this route but has too few bad-weather departures from PDX to compare.
This route’s airlines in bad weather at PDX
All departures from PDX| Airline | Bad-weather departures | Cancelled | Other carriers |
|---|---|---|---|
| Southwest Airlines | 1,740 | 1.5%about level | 1.8% |
| SkyWest Airlines | 1,681 | 2.4%about level | 2.0% |
| Alaska Airlines | 4,003 | 2.1%above the others | 1.2% |
These are airport figures, not route figures: every scheduled departure from PDX and LAS, to any destination, in hours the weather report called bad. The airline rows count each carrier’s departures from PDX on every route.
Weather source and limits. In full: PDX (airlines), LAS, What Weather Costs Each Airport, Who Cancels More When the Weather Turns, Airports That Change Places When Weather Turns.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| Alaska Airlines | 3,872 | 82.2% | 0.93% | -3 min | 5.2% |
| Southwest Airlines | 3,776 | 81.1% | 0.45% | -4 min | 4.6% |
| Spirit Airlines | 2,176 | 83.6% | 1.15% | -8 min | 5.9% |
| Frontier Airlines | 814 | 78.3% | 3.07% | -8 min | 9.3% |
| SkyWest Airlines | 230 | 83.2% | 1.30% | -6 min | 7.5% |
Alaska Airlines flew 35.6% of the 10,868 flights listed. Frontier Airlines cancelled 3.07% of its flights here against 0.45% for Southwest Airlines.
Spirit Airlines arrived on time 5.3 percentage points more often than Frontier Airlines on this route.
Weekly and seasonal patterns
By day of week
Saturday is historically the most reliable day and Friday the least, a gap of 10.2 percentage points.
By month
- Jan: 83.9%
- Feb: 84.6%
- Mar: 81.1%
- Apr: 83.3%
- May: 85.5%
- Jun: 81.3%
- Jul: 75.7%
- Aug: 79.1%
- Sep: 80.0%
- Oct: 81.5%
- Nov: 86.8%
- Dec: 82.2%
July is historically the weakest month and November the strongest, a spread of 11.1 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 77.4% from 296 flights
- August 2023: 79.1% from 337 flights
- September 2023: 79.6% from 364 flights
- October 2023: 82.7% from 356 flights
- November 2023: 88.8% from 358 flights
- December 2023: 87.7% from 358 flights
- January 2024: 78.5% from 324 flights
- February 2024: 83.8% from 298 flights
- March 2024: 78.6% from 346 flights
- April 2024: 80.5% from 320 flights
- May 2024: 82.5% from 326 flights
- June 2024: 81.7% from 310 flights
- July 2024: 68.8% from 318 flights
- August 2024: 76.4% from 328 flights
- September 2024: 81.0% from 305 flights
- October 2024: 84.3% from 334 flights
- November 2024: 89.6% from 252 flights
- December 2024: 82.8% from 286 flights
- January 2025: 88.4% from 277 flights
- February 2025: 84.9% from 259 flights
- March 2025: 83.7% from 327 flights
- April 2025: 87.8% from 330 flights
- May 2025: 88.9% from 308 flights
- June 2025: 84.2% from 292 flights
- July 2025: 76.7% from 303 flights
- August 2025: 82.4% from 274 flights
- September 2025: 79.5% from 265 flights
- October 2025: 76.2% from 250 flights
- November 2025: 80.9% from 238 flights
- December 2025: 73.2% from 239 flights
- January 2026: 85.7% from 225 flights
- February 2026: 85.4% from 206 flights
- March 2026: 81.3% from 257 flights
- April 2026: 80.6% from 239 flights
- May 2026: 85.1% from 237 flights
- June 2026: 77.2% from 250 flights
- July 2026: 80.3% from 276 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 80.5% against 83.9% in the 12 months before — declining by 3.4 percentage points.
Data and methodology
Calculated by FlyerIntel from 10,868 PDX → LAS flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed