Flight number record
AS 627
Alaska Airlines · Portland to Las Vegas
- Route
- PDX → LAS
- Departs
- 07:37
- Flights
- 250
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 627, check with Alaska Airlines.
AS 627 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 40 minutes. That rests on 250 flights, with a median arrival 6 minutes early.
Set against the rest of the country, AS 627's record is 12 points better than the US average of 77.3%. That gap is worth roughly 119 fewer late arrivals for every thousand flights.
Key figures
On time
89.2%
Arrivals under 15 minutes late, of 249 completed flights
Avg delay
41 min
Across delayed arrivals only, not all flights
Cancelled
0.40%
National rate is 1.89%
1 hour+ late
0.8%
National rate is 8.3%
These figures cover 250 flights between September 2025 and August 2026. The median arrival is 6 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When AS 627 flies
AS 627 flies PDX to LAS without a single fixed slot. Its most common scheduled departure was 07:37, used on 70 of 250 flights, with 07:00 (61 flights) and 07:30 (51 flights) next.
- Departs 07:3770 flights28.0%
- Departs 07:0061 flights24.4%
- Departs 07:3051 flights20.4%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 07:37 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and AS 627 runs level with that at 89.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
AS 627 next to PDX to LAS
Every carrier on PDX to LAS combined arrived on time 79.9% of the time across 2,934 flights, so AS 627 is 9 points ahead of it. Alaska flew 1,571 flights on the same city pair under all its flight numbers, including this one, and those ran 83.2% on time. Across its whole network Alaska Airlines managed 79.7%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 627thin sample | 250 | 89.2% | 41 min | 0.40% | A+ |
| All Alaska Airlines on PDX–LAS | 1,571 | 83.2% | 52 min | 0.45% | B+ |
| All carriers on PDX–LAS | 2,934 | 79.9% | 54 min | 0.55% | B+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 627 quarter by quarter
AS 627 did not run the same all year. Its best quarter was Apr–Jun 2026 at 97.3% on time and its weakest Oct–Dec 2025 at 75.8%, a swing of 22 points on roughly 63 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Oct–Dec 202566 flights75.8%
- Jan–Mar 202667 flights89.6%
- Apr–Jun 202674 flights97.3%
- Jul–Sep 202643 flights95.3%
Scale runs 65% to 100%.
By weekday, AS 627 did best on Thursday at 97.6% on time and worst on Monday at 84.1%. Each day rests on about 36 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 627 runs when it is late
Most of the lateness is short. 16 of the 27 late arrivals were under half an hour behind, and 2 reached an hour or more.
- 15+ min early55 flights22.1%
- Within 15 min167 flights67.1%
- 15–29 min late16 flights6.4%
- 30–59 min late9 flights3.6%
- 1–2 hours late1 flights0.4%
- 2+ hours late1 flights0.4%
Scale runs 0% to 100%.
Share of 249 completed flights by arrival against schedule.
Only 17 of 249 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for AS 627
The latest arrival of the period was on 21 November 2025, 5 hours 55 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across November, October, January and December, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 21 November 2025 | 5 hours 55 minutes | Late-arriving aircraft |
| 28 October 2025 | 1 hour 7 minutes | National Airspace System |
| 4 January 2026 | 54 minutes | Carrier |
| 3 January 2026 | 51 minutes | Late-arriving aircraft |
| 24 December 2025 | 37 minutes | National Airspace System |
Delay causes
Why AS 627 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,095 reported delay minutes.
- 38%Late-arriving aircraft
- 38%National Airspace System
- 23%Carrier
- 1%Extreme weather
38% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 1,095 reported delay minutes here, that single category outweighs weather by 30 to one. The split is drawn from 1,095 delay minutes reported on AS 627.
Cancellations are rare at 0.40%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 0.8% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 763 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on one other city pair in the data, including TPA to SEA (33), but none flew often enough under AS 627 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to PDX to LAS only.
One caution: this is a thin sample. 250 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking AS 627
For a booking, AS 627 has one of the better records a US domestic flight can show: 89.2% on time and 0.40% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- PDX to LAS, every carrier and departure
- LAS to PDX, the return direction
- Alaska Airlines 757 on the same route84.5%
- Alaska Airlines 778 on the same route82.7%
- Alaska Airlines 531 on the same route80.7%
- Portland International (PDX) delay statistics
- Harry Reid International (LAS) delay statistics
- Alaska Airlines on-time record
- Every Alaska Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Alaska Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.