Flight number record

OO 5553

SkyWest Airlines · Los Angeles to Aspen

Route: LAX → ASE
Departs: 10:40
Flights: 263
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5553, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.

OO 5553 lands a B, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 263 flights, with a median arrival 8 minutes early.

On time

79.6%

Arrivals under 15 minutes late, of 245 completed flights

Avg delay

92 min

Across delayed arrivals only, not all flights

Cancelled

1.52%

National rate is 1.81%

1 hour+ late

10.2%

National rate is 8.1%

These figures cover 263 flights between July 2025 and June 2026. Beyond the headline rate, 10.2% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When OO 5553 flies

OO 5553 flies LAX to ASE without a single fixed slot. Its most common scheduled departure was 10:40, used on 49 of 263 flights, with 10:35 (37 flights) and 10:20 (34 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:4049 flights18.6%
Departs 10:3537 flights14.1%
Departs 10:2034 flights12.9%

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 10:40 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 5553 runs 5 points worse at 79.6%. 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

OO 5553 next to LAX to ASE

Every carrier on LAX to ASE combined arrived on time 77.3% of the time across 1,255 flights, so OO 5553 is 2 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, close to this flight's figure.

OO 5553 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5553thin sample	263	79.6%	92 min	1.52%	B
All SkyWest Airlines on LAX–ASE	1,255	77.3%	98 min	2.47%	B
All carriers on LAX–ASE	1,255	77.3%	98 min	2.47%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5553 quarter by quarter

OO 5553 did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.1% on time and its weakest Jan–Mar 2026 at 57.5%, a swing of 30 points on roughly 66 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 flights82.1%
Oct–Dec 202592 flights84.4%
Jan–Mar 202645 flights57.5%
Apr–Jun 202634 flights87.1%

Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5553 did best on Wednesday at 97.1% on time and worst on Saturday at 65.8%. Each day rests on about 38 flights, so a gap of 31 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5553 runs late

One category carries most of the weight here. Carrier accounts for 44% of the 4,597 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
44%
National Airspace System
31%
Late-arriving aircraft
13%
Extreme weather
12%

Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.9 times the usual weather exposure. The split is drawn from 4,597 delay minutes reported on OO 5553.

Cancellations sit at 1.52% against a national 1.81%, which is ordinary. Diversions add another 5.32%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.2% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The 737 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.

The same number turns up on five other city pairs in the data, including ORD to FSD (32), FAR to ORD (31) and ORD to CAE (21), but none flew often enough under OO 5553 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to ASE only.

One caution: this is a thin sample. 263 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 OO 5553

For a booking, read OO 5553 as 79.6% on time with 1.52% cancelled over 263 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 SkyWest 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