Flight number record

OO 5534

SkyWest Airlines · Redmond to San Francisco

Route: RDM → SFO
Departs: 19:50
Flights: 253
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5534, 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 5534 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 253 flights, with a median arrival 2 minutes late.

The national on-time rate over the same period is 77.6%, so OO 5534 runs 13 points behind the country as a whole. Across a thousand flights that is about 125 extra late arrivals.

On time

65.1%

Arrivals under 15 minutes late, of 249 completed flights

Avg delay

71 min

Across delayed arrivals only, not all flights

Cancelled

1.58%

National rate is 1.81%

1 hour+ late

16.1%

National rate is 8.1%

These figures cover 253 flights between July 2025 and June 2026. Beyond the headline rate, 16.1% 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 5534 flies

OO 5534 flies RDM to SFO without a single fixed slot. Its most common scheduled departure was 19:50, used on 48 of 253 flights, with 19:51 (36 flights) and 18:48 (32 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 19:5048 flights19.0%
Departs 19:5136 flights14.2%
Departs 18:4832 flights12.6%

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 19:50 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and OO 5534 runs 3 points worse at 65.1%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 5534 next to RDM to SFO

Every carrier on RDM to SFO combined arrived on time 66.7% of the time across 1,278 flights, so OO 5534 is 2 points behind it. SkyWest flew 658 flights on the same city pair under all its flight numbers, including this one, and those ran 66.5% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 14 points.

OO 5534 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5534thin sample	253	65.1%	71 min	1.58%	C
All SkyWest Airlines on RDM–SFO	658	66.5%	74 min	1.37%	C
All carriers on RDM–SFO	1,278	66.7%	70 min	0.94%	C+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5534 quarter by quarter

OO 5534 did not run the same all year. Its best quarter was Jan–Mar 2026 at 76.9% on time and its weakest Apr–Jun 2026 at 51.2%, a swing of 26 points on roughly 63 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 202552 flights65.4%
Oct–Dec 202591 flights62.6%
Jan–Mar 202667 flights76.9%
Apr–Jun 202643 flights51.2%

Scale runs 45% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5534 did best on Wednesday at 69.4% on time and worst on Monday at 50.0%. Each day rests on about 36 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5534 runs late

One category carries most of the weight here. National Airspace System accounts for 59% of the 6,131 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.

National Airspace System
59%
Late-arriving aircraft
21%
Carrier
18%
Extreme weather
1%

59% 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 3,637 minutes out of 6,131, against a national NAS share of 21%. The split is drawn from 6,131 delay minutes reported on OO 5534.

Cancellations sit at 1.58% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

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. 16.1% 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 same number turns up on four other city pairs in the data, including ORD to ALB (22), GRR to ORD (10) and ORD to OMA (10), but none flew often enough under OO 5534 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to RDM to SFO only.

One caution: this is a thin sample. 253 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 5534

For a booking, OO 5534 is a flight to put a long connection behind. 16.1% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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