Flight number record

AS 140

Alaska Airlines · Fairbanks to Seattle

Route: FAI → SEA
Departs: 12:17
Flights: 259
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 140, check with Alaska Airlines.

AS 140 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 10 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 259 flights, with a median arrival 11 minutes early.

Set against the rest of the country, AS 140's record is 10 points better than the US average of 77.6%. That gap is worth roughly 96 fewer late arrivals for every thousand flights.

On time

87.2%

Arrivals under 15 minutes late, of 258 completed flights

Avg delay

58 min

Across delayed arrivals only, not all flights

Cancelled

0.39%

National rate is 1.81%

1 hour+ late

2.7%

National rate is 8.1%

These figures cover 259 flights between July 2025 and June 2026. The median arrival is 11 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.

Schedule

When AS 140 flies

AS 140 flies FAI to SEA without a single fixed slot. Its most common scheduled departure was 12:17, used on 62 of 259 flights, with 12:11 (61 flights) and 12:15 (53 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 12:1762 flights23.9%
Departs 12:1161 flights23.6%
Departs 12:1553 flights20.5%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 12:17 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and AS 140 runs 8 points better at 87.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

AS 140 next to FAI to SEA

Every carrier on FAI to SEA combined arrived on time 82.7% of the time across 2,320 flights, so AS 140 is 5 points ahead of it. Alaska flew 1,838 flights on the same city pair under all its flight numbers, including this one, and those ran 83.8% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 8 points.

AS 140 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 140thin sample	259	87.2%	58 min	0.39%	A+
All Alaska Airlines on FAI–SEA	1,838	83.8%	50 min	0.87%	B+
All carriers on FAI–SEA	2,320	82.7%	64 min	1.25%	B
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 140 quarter by quarter

Quarter by quarter AS 140 held fairly steady: 91.3% in Jul–Sep 2025, 84.4% in Oct–Dec 2025 and 81.8% in Jan–Mar 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights91.3%
Oct–Dec 202591 flights84.4%
Jan–Mar 202655 flights81.8%
Apr–Jun 202621 flights—

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, AS 140 ranged from 81.6% on Tuesday to 91.9% on Wednesday. With about 37 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why AS 140 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 81% of the 1,916 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
81%
National Airspace System
14%
Extreme weather
4%
Carrier
1%

81% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 1,916 reported delay minutes here, that single category outweighs weather by 23 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 1,916 delay minutes reported on AS 140.

Cancellations are rare at 0.39%, below the national 1.81% 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 2.7% land an hour or more behind schedule, against 8.1% 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 1,533 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.

The same number turns up on one other city pair in the data, including LIH to SAN (1), but none flew often enough under AS 140 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to FAI to SEA only.

One caution: this is a thin sample. 259 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 140

For a booking, AS 140 has one of the better records a US domestic flight can show: 87.2% on time and 0.39% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures