Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
UA 1866 · Grand Rapids (GRR) → Chicago (ORD)
Sold by United. Still flying: 19 of the last 56 days.
Arrives on time43%within 15 minutes, of 24 flights
Cancelled4.2%of scheduled flights
An hour or more late26%of flights that operated
When late, on average92 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Chicago is 1 h behind Grand Rapids).
- Leaves GRR
- 18:45
- Arrives ORD
- 19:00
- Flight time
- 1h 15m
- Days flown, last 8 weeks
- 19 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at GRR
All flights leaving Grand Rapids (GRR) at 6–7 pm, wherever they’re going: 73% left within 15 minutes and 2.8% were cancelled (1,279 flights in the year). Other United flights on this route →
Upcoming forecasts
This flight isn’t in our published forecasts for the next few days.