Flight number record
AS 1420
Alaska Airlines · Portland to Houston
- Route
- PDX → IAH
- Departs
- 07:05
- Flights
- 348
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 1420, check with Alaska Airlines.
AS 1420 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 348 flights, with a median arrival 9 minutes early.
Set against the rest of the country, AS 1420's record is 8 points better than the US average of 77.3%. That gap is worth roughly 79 fewer late arrivals for every thousand flights.
Key figures
On time
85.2%
Arrivals under 15 minutes late, of 344 completed flights
Avg delay
43 min
Across delayed arrivals only, not all flights
Cancelled
0.86%
National rate is 1.89%
1 hour+ late
2.3%
National rate is 8.3%
These figures cover 348 flights between September 2025 and August 2026. The median arrival is 9 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.
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Schedule
When AS 1420 flies
AS 1420 flies PDX to IAH without a single fixed slot. Its most common scheduled departure was 07:05, used on 70 of 348 flights, with 10:47 (57 flights) and 07:00 (48 flights) next.
- Departs 07:0570 flights20.1%
- Departs 10:4757 flights16.4%
- Departs 07:0048 flights13.8%
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 07:05 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and AS 1420 runs 4 points worse at 85.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
AS 1420 next to PDX to IAH
Every carrier on PDX to IAH combined arrived on time 86.6% of the time across 1,208 flights, so AS 1420 is about level with it. Across its whole network Alaska Airlines managed 79.7%, which this flight beats by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 1420thin sample | 348 | 85.2% | 43 min | 0.86% | A+ |
| All Alaska Airlines on PDX–IAHthin sample | 353 | 85.4% | 43 min | 0.85% | A+ |
| All carriers on PDX–IAH | 1,208 | 86.6% | 66 min | 0.50% | A+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 1420 quarter by quarter
AS 1420 did not run the same all year. Its best quarter was Apr–Jun 2026 at 94.5% on time and its weakest Oct–Dec 2025 at 70.5%, a swing of 24 points on roughly 70 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.
- Jul–Sep 202530 flights90.0%
- Oct–Dec 202590 flights70.5%
- Jan–Mar 202675 flights83.8%
- Apr–Jun 202691 flights94.5%
- Jul–Sep 202662 flights91.8%
Scale runs 60% to 100%.
By weekday, AS 1420 did best on Tuesday at 90.4% on time and worst on Friday at 78.0%. Each day rests on about 50 flights, so a gap of 12 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 1420 runs when it is late
AS 1420 often beats the schedule: 128 of 344 completed flights, 37%, arrived 15 minutes or more early. Most of the lateness is short. 32 of the 51 late arrivals were under half an hour behind, and 8 reached an hour or more.
- 15+ min early128 flights37.2%
- Within 15 min165 flights48.0%
- 15–29 min late32 flights9.3%
- 30–59 min late11 flights3.2%
- 1–2 hours late5 flights1.5%
- 2+ hours late3 flights0.9%
Scale runs 0% to 100%.
Share of 344 completed flights by arrival against schedule.
A late pushback is often recovered here: of 42 departures that left 15 minutes late or more, 15 still arrived on time. In the other direction, 24 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at IAH.
The worst days
Worst days for AS 1420
The latest arrival of the period was on 15 October 2025, 4 hours 21 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across October, March, January and May, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 October 2025 | 4 hours 21 minutes | Carrier |
| 16 March 2026 | 3 hours 46 minutes | National Airspace System |
| 16 January 2026 | 2 hours 30 minutes | Carrier |
| 8 March 2026 | 1 hour 51 minutes | Late-arriving aircraft |
| 1 May 2026 | 1 hour 33 minutes | National Airspace System |
Delay causes
Why AS 1420 runs late
National Airspace System accounts for 48% of the 2,181 delay minutes carriers reported here, and the remaining four split what is left.
- 48%National Airspace System
- 36%Carrier
- 13%Late-arriving aircraft
- 3%Security
48% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,039 minutes out of 2,181, against a national NAS share of 21%. The split is drawn from 2,181 delay minutes reported on AS 1420.
Cancellations are rare at 0.86%, 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 2.3% 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.
At 1,825 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
Every one of the 348 flights under AS 1420 in the data flew PDX to IAH. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 348 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 1420
For a booking, AS 1420 has one of the better records a US domestic flight can show: 85.2% on time and 0.86% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- PDX to IAH, every carrier and departure
- IAH to PDX, the return direction
- United Airlines 462 on the same route92.8%
- Portland International (PDX) delay statistics
- George Bush Intercontinental (IAH) 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
- The best time of day to fly, according to 7.05 million flight records
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.