LAS to ORD flight delays
Las Vegas, NV (LAS) Chicago, IL (ORD) · 1,514 miles
395 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics
75.26%
Arrived on time
Within 15 minutes of schedule
1.77%
Cancelled
Share of scheduled flights
114 min
When late, late by
Average across delayed arrivals
29 min
Delay per flight
Averaged over every flight flown
What the record says about this route
This route does better than its own airport. Departures from LAS overall run 11.2 points less punctual than this particular one — so whatever congestion LAS has, this route is largely escaping it.
The two directions do not behave alike. ORD to LAS arrives on time 7.2 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This is a thin route — 395 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
The 2 airlines here are separated by under 4 points — close enough to call a tie. Choose on price and departure time.
Which airline should you fly on this route?
Over March 2025 – August 2026, United Airlines arrived on time most often on LAS to ORD. American Airlines was late most often.
Every airline on LAS to ORD
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| United Airlines | 195 | 77.32% | 0% | 118 min | C |
| American Airlines | 172 | 73.62% | 3.49% | 115 min | D |
| Frontier Airlines | 22 | 66.67% | 4.55% | 65 min | — |
| Southwest Airlines | 6 | 83.33% | 0% | 196 min | — |
The return leg
ORD to LAS Chicago back to Las Vegas 68.04% on time DOther routes from Las Vegas
Common questions
Are flights from Las Vegas to Chicago usually delayed?
75.26% of flights on the LAS to ORD route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Las Vegas to Chicago?
United Airlines, at 77.32% on time across 195 flights. The least punctual on the route was American Airlines at 73.62%.
How often are LAS to ORD flights cancelled?
1.77% of scheduled flights did not operate — about 18 in every thousand. That is in the normal range.
When LAS to ORD flights are late, how late are they?
About 114 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on LAS to ORD during March 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →