Flight number record

OO 5374

SkyWest Airlines · Denver to Idaho Falls

Route: DEN → IDA
Departs: 08:05
Flights: 255
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5374, 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 5374 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 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 255 flights, with a median arrival 10 minutes early.

Set against the rest of the country, OO 5374's record is 10 points better than the US average of 77.3%. That gap is worth roughly 101 fewer late arrivals for every thousand flights.

On time

87.4%

Arrivals under 15 minutes late, of 254 completed flights

Avg delay

79 min

Across delayed arrivals only, not all flights

Cancelled

0.39%

National rate is 1.89%

1 hour+ late

5.1%

National rate is 8.3%

These figures cover 255 flights between September 2025 and August 2026. The median arrival is 10 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.

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Schedule

When OO 5374 flies

OO 5374 flies DEN to IDA without a single fixed slot. Its most common scheduled departure was 08:05, used on 103 of 255 flights, with 08:10 (76 flights) and 08:00 (76 flights) next.

Departs 08:05103 flights40.4%
Departs 08:1076 flights29.8%
Departs 08:0076 flights29.8%

Scale runs 0% to 100%.

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

A 08:05 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 5374 runs 4 points better at 87.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

OO 5374 next to DEN to IDA

Every carrier on DEN to IDA combined arrived on time 82.5% of the time across 1,663 flights, so OO 5374 is 5 points ahead of it. SkyWest flew 1,417 flights on the same city pair under all its flight numbers, including this one, and those ran 82.6% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 9 points.

OO 5374 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5374thin sample	255	87.4%	79 min	0.39%	A+
All SkyWest Airlines on DEN–IDA	1,417	82.6%	73 min	0.35%	B+
All carriers on DEN–IDA	1,663	82.5%	72 min	0.30%	B+
SkyWest Airlines, whole network	855,406	78.7%	88 min	1.79%	B

Across the year

OO 5374 quarter by quarter

OO 5374 did not run the same all year. Its best quarter was Jul–Sep 2026 at 93.5% on time and its weakest Jan–Mar 2026 at 78.4%, a swing of 15 points on roughly 85 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.

Oct–Dec 202514 flights—
Jan–Mar 202689 flights78.4%
Apr–Jun 202690 flights92.2%
Jul–Sep 202662 flights93.5%

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5374 did best on Sunday at 94.6% on time and worst on Friday at 80.6%. Each day rests on about 36 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late OO 5374 runs when it is late

OO 5374 often beats the schedule: 93 of 254 completed flights, 37%, arrived 15 minutes or more early. The 32 late arrivals split 10 under half an hour, 9 between 30 and 60 minutes, and 13 an hour or more.

15+ min early93 flights36.6%
Within 15 min129 flights50.8%
15–29 min late10 flights3.9%
30–59 min late9 flights3.5%
1–2 hours late8 flights3.1%
2+ hours late5 flights2.0%

Scale runs 0% to 100%.

Share of 254 completed flights by arrival against schedule.

Time lost at the gate mostly stays lost. Of 29 departures that left 15 minutes late or more, only 3 made it up before arrival. 6 flights left on time and still arrived late.

The worst days

Worst days for OO 5374

The latest arrival of the period was on 17 April 2026, 6 hours 54 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in January 2026.

The latest arrivals of OO 5374 in the period
Date	Arrived late by	Largest filed cause
17 April 2026	6 hours 54 minutes	Carrier
24 January 2026	5 hours 7 minutes	Late-arriving aircraft
19 January 2026	3 hours 12 minutes	Late-arriving aircraft
23 January 2026	2 hours 45 minutes	Carrier
16 April 2026	2 hours 13 minutes	Carrier

Delay causes

Why OO 5374 runs late

Carrier accounts for 60% of the 2,523 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
60%
Late-arriving aircraft
31%
National Airspace System
7%
Extreme weather
2%

The largest share of delay minutes, 60%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,506 of the 2,523 delay minutes reported here. The split is drawn from 2,523 delay minutes reported on OO 5374.

Cancellations are rare at 0.39%, below the national 1.89% 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

5.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.

The same number turns up on six other city pairs in the data, including DEN to ICT (35), XNA to IAH (28) and ORD to SBN (16), but none flew often enough under OO 5374 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to IDA only.

One caution: this is a thin sample. 255 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 5374

For a booking, OO 5374 has one of the better records a US domestic flight can show: 87.4% 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 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures