Flight number record
UA 2099
United Airlines · Grand Rapids to Chicago
- Route
- GRR → ORD
- Departs
- 07:30
- Flights
- 317
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2099, check with United Airlines.
UA 2099 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 317 flights, with a median arrival 5 minutes late.
The national on-time rate over the same period is 77.3%, so UA 2099 runs 8 points behind the country as a whole. Across a thousand flights that is about 77 extra late arrivals.
Key figures
On time
69.6%
Arrivals under 15 minutes late, of 316 completed flights
Avg delay
67 min
Across delayed arrivals only, not all flights
Cancelled
0.32%
National rate is 1.89%
1 hour+ late
9.8%
National rate is 8.3%
These figures cover 317 flights between September 2025 and August 2026. Beyond the headline rate, 9.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When UA 2099 flies
UA 2099 flies GRR to ORD without a single fixed slot. Its most common scheduled departure was 07:30, used on 174 of 317 flights, with 07:15 (74 flights) next.
- Departs 07:30174 flights54.9%
- Departs 07:1574 flights23.3%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 07:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 2099 runs 20 points worse at 69.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
UA 2099 next to GRR to ORD
Every carrier on GRR to ORD combined arrived on time 69.1% of the time across 4,079 flights, so UA 2099 is about level with it. United flew 1,085 flights on the same city pair under all its flight numbers, including this one, and those ran 63.0% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2099thin sample | 317 | 69.6% | 67 min | 0.32% | C+ |
| All United Airlines on GRR–ORD | 1,085 | 63.0% | 78 min | 1.11% | D |
| All carriers on GRR–ORD | 4,079 | 69.1% | 91 min | 2.99% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2099 quarter by quarter
UA 2099 did not run the same all year. Its best quarter was Jul–Sep 2025 at 83.3% on time and its weakest Jan–Mar 2026 at 61.4%, a swing of 22 points on roughly 79 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights83.3%
- Oct–Dec 202592 flights62.0%
- Jan–Mar 202689 flights61.4%
- Apr–Jun 202685 flights78.8%
- Jul–Sep 202621 flights—
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2099 did best on Tuesday at 82.6% on time and worst on Monday at 54.3%. Each day rests on about 45 flights, so a gap of 28 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2099 runs when it is late
The 96 late arrivals split 42 under half an hour, 23 between 30 and 60 minutes, and 31 an hour or more.
- 15+ min early33 flights10.4%
- Within 15 min187 flights59.2%
- 15–29 min late42 flights13.3%
- 30–59 min late23 flights7.3%
- 1–2 hours late14 flights4.4%
- 2+ hours late17 flights5.4%
Scale runs 0% to 100%.
Share of 316 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 50 departures that left 15 minutes late or more, only 2 made it up before arrival. In the other direction, 48 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at ORD.
The worst days
Worst days for UA 2099
The latest arrival of the period was on 2 February 2026, 5 hours 59 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 February 2026 | 5 hours 59 minutes | Carrier |
| 30 November 2025 | 5 hours 28 minutes | Carrier |
| 2 April 2026 | 4 hours 43 minutes | Carrier |
| 30 January 2026 | 4 hours 32 minutes | Carrier |
| 7 December 2025 | 4 hours 8 minutes | National Airspace System |
Delay causes
Why UA 2099 runs late
Carrier accounts for 53% of the 6,452 delay minutes carriers reported here, and the remaining four split what is left.
- 53%Carrier
- 45%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 53%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,426 of the 6,452 delay minutes reported here. The split is drawn from 6,452 delay minutes reported on UA 2099.
Cancellations are rare at 0.32%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
9.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The same number turns up on five other city pairs in the data, including ORD to SEA (217), ORD to DCA (47) and ORD to IAH (21), but none flew often enough under UA 2099 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to GRR to ORD only.
One caution: this is a thin sample. 317 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 UA 2099
For a booking, read UA 2099 as 69.6% on time with 0.32% cancelled over 317 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- GRR to ORD, every carrier and departure
- ORD to GRR, the return direction
- Chicago O'Hare International (ORD) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- How often a connection fails at the major US hubs
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.