Carrier route record

NKLAS→BWI

Spirit Airlines · Las Vegas to Baltimore

Flights: 178
Period: July 2025 to June 2026
Share of route: 10%
Carriers: 2

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Spirit Airlines.

Spirit on LAS to BWI lands a B, about a point 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 178 flights, with a median arrival 5 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate Spirit on LAS to BWI from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

79.0%

Arrivals under 15 minutes late, of 176 completed flights

Avg delay

93 min

Across delayed arrivals only, not all flights

Cancelled

1.12%

National rate is 1.81%

Whole route

78.5%

Every carrier on LAS to BWI, 1,803 flights

These figures cover 178 flights between July 2025 and June 2026. The median arrival is 5 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.

Carrier by carrier

Spirit against every carrier on LAS to BWI

Spirit flew 178 of the 1,803 flights on LAS to BWI, about 10% of it. Its 79.0% on time is about level with the route as a whole at 78.5%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Spirit at 79.0% to Southwest at 78.5%.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on LAS to BWI
Airline	Flights	On time	Avg delay	Cancelled	Grade
Spirit Airlines (this page)thin sample	178	79.0%	93 min	1.12%	B
Southwest Airlines	1,625	78.5%	46 min	0.92%	B+

Departure window

When Spirit runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 178 flights.

5am–8am—
8am–11am42 flights83.3%
11am–2pm9 flights—
2pm–5pm2 flights—
5pm–8pm2 flights—
8pm–5am123 flights76.9%

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

The early departures do better, though not dramatically: 83.3% on time for the 8am–11am window against 76.9% for 8pm–5am. Worth taking if the schedule allows, not worth an extra connection. The 8pm–5am window is the busiest, with 123 flights scheduled in it.

Across the year

Spirit on LAS to BWI through the year

Jul–Sep 2025112 flights73.6%
Oct–Dec 202565 flights87.7%
Apr–Jun 20261 flights—

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 79.0% on time across 178 flights.

Split by quarter, Spirit on LAS to BWI logged 112 flights in Jul–Sep 2025, 65 flights in Oct–Dec 2025 and 1 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 79.0% annual figure is the one to use.

Across the week, Thursday is the strongest day at 81.2% on time and Sunday the weakest at 75.0%. 6 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Spirit runs late on this route

One category carries most of the weight here. Carrier accounts for 57% of the 3,454 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
57%
National Airspace System
24%
Late-arriving aircraft
18%
Extreme weather
1%

The largest share of delay minutes, 57%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,985 of the 3,454 delay minutes reported here. The split is drawn from 3,454 reported delay minutes.

Cancellations sit at 1.12% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

6.2% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.

At 2,106 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The return leg is a different operation and performs like one: it runs 86.1% on time across 181 flights, 7 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 7 points of difference.

One caution: this is a thin sample. 178 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 Spirit on LAS to BWI

Put together: treat all of this as provisional. 178 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 79.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 176 completed flights over 12 months sit behind that.

Where to go next

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