Flight number record
AS 555
Alaska Airlines · Seattle to Minneapolis
- Route
- SEA → MSP
- Departs
- 08:26
- Flights
- 330
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AS 555, check with Alaska Airlines.
AS 555 earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 6 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 330 flights, with a median arrival 3 minutes early.
Set against the rest of the country, AS 555's record is 6 points better than the US average of 77.6%. That gap is worth roughly 64 fewer late arrivals for every thousand flights.
Key figures
On time
84.0%
Arrivals under 15 minutes late, of 324 completed flights
Avg delay
39 min
Across delayed arrivals only, not all flights
Cancelled
1.52%
National rate is 1.81%
1 hour+ late
2.2%
National rate is 8.1%
These figures cover 330 flights between July 2025 and June 2026. The median arrival is 3 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 555 flies
AS 555 flies SEA to MSP without a single fixed slot. Its most common scheduled departure was 08:26, used on 57 of 330 flights, with 08:30 (53 flights) and 08:55 (45 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 08:2657 flights17.3%
- Departs 08:3053 flights16.1%
- Departs 08:5545 flights13.6%
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 08:26 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and AS 555 runs level with that at 84.0%. 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 555 next to SEA to MSP
Every carrier on SEA to MSP combined arrived on time 85.5% of the time across 2,689 flights, so AS 555 is 2 points behind it. Alaska flew 953 flights on the same city pair under all its flight numbers, including this one, and those ran 80.0% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 555thin sample | 330 | 84.0% | 39 min | 1.52% | B |
| All Alaska Airlines on SEA–MSP | 953 | 80.0% | 44 min | 1.05% | B |
| All carriers on SEA–MSP | 2,689 | 85.5% | 55 min | 0.89% | A+ |
| Alaska Airlines, whole network | 293,372 | 79.1% | 52 min | 1.28% | B |
Across the year
AS 555 quarter by quarter
AS 555 did not run the same all year. Its best quarter was Jan–Mar 2026 at 90.5% on time and its weakest Jul–Sep 2025 at 75.6%, a swing of 15 points on roughly 83 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 flights75.6%
- Oct–Dec 202592 flights82.4%
- Jan–Mar 202676 flights90.5%
- Apr–Jun 202670 flights89.9%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, AS 555 ranged from 77.8% on Sunday to 89.1% on Monday. With about 47 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Delay causes
Why AS 555 runs late
One category carries most of the weight here. Carrier accounts for 53% of the 2,008 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.
- 53%Carrier
- 43%National Airspace System
- 5%Late-arriving aircraft
43% 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 858 minutes out of 2,008, against a national NAS share of 21%. The split is drawn from 2,008 delay minutes reported on AS 555.
Cancellations sit at 1.52% against a national 1.81%, which is ordinary. Diversions add another 0.30%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.2% 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.
The 1,399 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
AS 555 is not only a SEA to MSP flight. It also flew MSP to SEA (292 flights, 75.2% 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. 330 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MSP to SEAthin sample | 292 | 75.2% | 50 min | 0.68% | B+ |
What to do with this
Booking AS 555
For a booking, read AS 555 as 84.0% on time with 1.52% cancelled over 330 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SEA to MSP, every carrier and departure
- MSP to SEA, the return direction
- Delta Air Lines 943 on the same route95.3%
- Delta Air Lines 536 on the same route90.6%
- Delta Air Lines 949 on the same route83.2%
- Alaska Airlines 386 on the same route78.4%
- Delta Air Lines 941 on the same route85.5%
- Delta Air Lines 953 on the same route91.2%
- Seattle-Tacoma International (SEA) delay statistics
- Minneapolis-St Paul International (MSP) 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
- Worst months to fly in the US, ranked by the data
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.