Flight number record

AS 500

Alaska Airlines · Seattle to Indianapolis

Route: SEA → IND
Departs: 10:42
Flights: 326
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 500, check with Alaska Airlines.

AS 500 sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land about 45 minutes behind schedule. That rests on 326 flights, with a median arrival 2 minutes early.

On time

74.1%

Arrivals under 15 minutes late, of 321 completed flights

Avg delay

46 min

Across delayed arrivals only, not all flights

Cancelled

1.23%

National rate is 1.81%

1 hour+ late

5.6%

National rate is 8.1%

These figures cover 326 flights between July 2025 and June 2026. The median arrival is 2 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 500 flies

AS 500 flies SEA to IND without a single fixed slot. Its most common scheduled departure was 10:42, used on 50 of 326 flights, with 10:43 (45 flights) and 11:45 (33 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:4250 flights15.3%
Departs 10:4345 flights13.8%
Departs 11:4533 flights10.1%

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 10:42 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and AS 500 runs 10 points worse at 74.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

AS 500 next to SEA to IND

Every carrier on SEA to IND combined arrived on time 74.3% of the time across 565 flights, so AS 500 is about level with it. Across its whole network Alaska Airlines managed 79.1%, which this flight trails by 5 points.

AS 500 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 500thin sample	326	74.1%	46 min	1.23%	C
All Alaska Airlines on SEA–IND	565	74.3%	44 min	1.24%	C
All carriers on SEA–IND	565	74.3%	44 min	1.24%	C
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 500 quarter by quarter

AS 500 did not run the same all year. Its best quarter was Apr–Jun 2026 at 85.6% on time and its weakest Jul–Sep 2025 at 53.3%, a swing of 32 points on roughly 82 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 202592 flights53.3%
Oct–Dec 202590 flights83.9%
Jan–Mar 202653 flights75.0%
Apr–Jun 202691 flights85.6%

Scale runs 45% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, AS 500 did best on Thursday at 84.8% on time and worst on Monday at 68.1%. Each day rests on about 47 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 500 runs late

One category carries most of the weight here. Carrier accounts for 49% of the 3,817 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.

Carrier
49%
Late-arriving aircraft
32%
National Airspace System
19%

The largest share of delay minutes, 49%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,863 of the 3,817 delay minutes reported here. The split is drawn from 3,817 delay minutes reported on AS 500.

Cancellations sit at 1.23% against a national 1.81%, which is ordinary. Diversions add another 0.31%.

Connections and routes

What a delay on this flight costs

5.6% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 45 minutes, which a normal layover absorbs.

At 1,866 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.

AS 500 is not only a SEA to IND flight. It also flew IND to SEA (317 flights, 66.7% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 326 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.

Other routes flown as AS 500
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
IND to SEAthin sample	317	66.7%	51 min	1.58%	C

What to do with this

Booking AS 500

For a booking, read AS 500 as 74.1% on time with 1.23% cancelled over 326 flights. Those are rates from the past twelve months, not a forecast for any particular 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