ORD to BIL flight delays
Chicago, IL (ORD) Billings, MT (BIL) · 1,060 miles
568 flights · July 2024 – July 2026 · US Bureau of Transportation Statistics
82.62%
Arrived on time
Within 15 minutes of schedule
0.35%
Cancelled
Share of scheduled flights
52 min
When late, late by
Average across delayed arrivals
10 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In June it ran 33.7 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Which airline you fly changes the odds here. Envoy Air arrived on time 6.1 points more often than SkyWest Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
This route does better than its own airport. Departures from ORD overall run 7.1 points less punctual than this particular one — so whatever congestion ORD has, this route is largely escaping it.
This is a thin route — 568 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.
Which airline should you fly on this route?
Over July 2024 – July 2026, Envoy Air arrived on time most often on ORD to BIL. SkyWest Airlines was late most often. Flights ran closest to schedule in November and worst in July.
Every airline on ORD to BIL
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 | 411 | 84.31% | 0.49% | 58 min | B |
| SkyWest Airlines | 157 | 78.21% | 0% | 40 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
BIL to ORD Billings back to Chicago 78.57% on time COther routes from Chicago
Common questions
Are flights from Chicago to Billings usually delayed?
82.62% of flights on the ORD to BIL route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airline is most on time from Chicago to Billings?
Envoy Air, at 84.31% on time across 411 flights. The least punctual on the route was SkyWest Airlines at 78.21%.
How often are ORD to BIL flights cancelled?
0.35% of scheduled flights did not operate — about 4 in every thousand. That is in the normal range.
What is the best month to fly Chicago to Billings?
June, when 100% of flights arrived on time. The worst was July at 66.3%.
When ORD to BIL flights are late, how late are they?
About 52 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 ORD to BIL during July 2024 – July 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 →