BIL to ORD flight delays
Billings, MT (BIL) Chicago, IL (ORD) · 1,060 miles
379 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
78.28%
Arrived on time
Within 15 minutes of schedule
0.26%
Cancelled
Share of scheduled flights
118 min
When late, late by
Average across delayed arrivals
27 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 118 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
This route does worse than its own airport. BIL as a whole runs 9.3 points more punctual than these flights, which points at something specific to the route — the time of day it is scheduled, or the aircraft that feed it — rather than the airport.
This is a thin route — 379 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 1 point — close enough to call a tie. Choose on price and departure time.
Which airline should you fly on this route?
Over January 2025 – August 2026, Envoy Air arrived on time most often on BIL to ORD. SkyWest Airlines was late most often. Flights ran closest to schedule in November and worst in July.
Every airline on BIL 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 |
|---|---|---|---|---|---|
| Envoy Air | 262 | 78.29% | 0.38% | 143 min | C |
| SkyWest Airlines | 117 | 78.26% | 0% | 62 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
ORD to BIL Chicago back to Billings 82.62% on time BCommon questions
Are flights from Billings to Chicago usually delayed?
78.28% of flights on the BIL 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 Billings to Chicago?
Envoy Air, at 78.29% on time across 262 flights. The least punctual on the route was SkyWest Airlines at 78.26%.
How often are BIL to ORD flights cancelled?
0.26% of scheduled flights did not operate — about 3 in every thousand. That is in the normal range.
When BIL to ORD flights are late, how late are they?
About 118 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 BIL to ORD during January 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 →