Flight number record

YX 3422

Republic Airways · Louisville to Chicago

Route: SDF → ORD
Departs: 07:00
Flights: 348
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 3422, check with Republic Airways. Republic Airways flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.

YX 3422 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 77.6%. When something does go wrong the average delay runs about an hour. That rests on 348 flights, with a median arrival 10 minutes early.

Set against the rest of the country, YX 3422's record is 10 points better than the US average of 77.6%. That gap is worth roughly 102 fewer late arrivals for every thousand flights.

On time

87.8%

Arrivals under 15 minutes late, of 345 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

0.86%

National rate is 1.81%

1 hour+ late

2.9%

National rate is 8.1%

These figures cover 348 flights between July 2025 and June 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.

Schedule

When YX 3422 flies

YX 3422 flies SDF to ORD without a single fixed slot. Its most common scheduled departure was 07:00, used on 118 of 348 flights, with 07:20 (62 flights) and 05:35 (61 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:00118 flights33.9%
Departs 07:2062 flights17.8%
Departs 05:3561 flights17.5%

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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and YX 3422 runs level with that at 87.8%. 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

YX 3422 next to SDF to ORD

Every carrier on SDF to ORD combined arrived on time 79.0% of the time across 2,807 flights, so YX 3422 is 9 points ahead of it. Republic flew 1,736 flights on the same city pair under all its flight numbers, including this one, and those ran 82.5% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 9 points.

YX 3422 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 3422thin sample	348	87.8%	56 min	0.86%	A+
All Republic Airways on SDF–ORD	1,736	82.5%	67 min	2.71%	B
All carriers on SDF–ORD	2,807	79.0%	78 min	2.81%	B
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 3422 quarter by quarter

Quarter by quarter YX 3422 held fairly steady: 87.0% in Jul–Sep 2025, 84.0% in Oct–Dec 2025, 89.8% in Jan–Mar 2026 and 90.0% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights87.0%
Oct–Dec 202576 flights84.0%
Jan–Mar 202689 flights89.8%
Apr–Jun 202691 flights90.0%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, YX 3422 did best on Thursday at 96.0% on time and worst on Saturday at 78.0%. Each day rests on about 50 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 3422 runs late

One category carries most of the weight here. National Airspace System accounts for 57% of the 2,368 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
57%
Carrier
29%
Extreme weather
13%

Extreme weather accounts for 13% 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 2.1 times the usual weather exposure. The split is drawn from 2,368 delay minutes reported on YX 3422.

Cancellations are rare at 0.86%, below the national 1.81% 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

Badly late arrivals are rare here: only 2.9% 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 same number turns up on four other city pairs in the data, including ORD to CLE (29), DTW to IAD (16) and ORD to DTW (6), but none flew often enough under YX 3422 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SDF to ORD only.

One caution: this is a thin sample. 348 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 YX 3422

For a booking, YX 3422 has one of the better records a US domestic flight can show: 87.8% on time and 0.86% cancelled. That is a base rate, not a promise about any single day.

Where to go next

A flight number here means Republic Airways’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