Flight number record

UA 2099

United Airlines · Grand Rapids to Chicago

Route: GRR → ORD
Departs: 07:30
Flights: 357
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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, 7 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 357 flights, with a median arrival 4 minutes late.

The national on-time rate over the same period is 77.6%, so UA 2099 runs 7 points behind the country as a whole. Across a thousand flights that is about 67 extra late arrivals.

On time

70.9%

Arrivals under 15 minutes late, of 354 completed flights

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

0.84%

National rate is 1.81%

1 hour+ late

8.2%

National rate is 8.1%

These figures cover 357 flights between July 2025 and June 2026. Beyond the headline rate, 8.2% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

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 235 of 357 flights, with 07:15 (53 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:30235 flights65.8%
Departs 07:1553 flights14.8%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 18 points worse at 70.9%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

UA 2099 next to GRR to ORD

Every carrier on GRR to ORD combined arrived on time 68.3% of the time across 4,038 flights, so UA 2099 is 3 points ahead of it. United flew 1,075 flights on the same city pair under all its flight numbers, including this one, and those ran 65.1% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 8 points.

UA 2099 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 2099thin sample	357	70.9%	62 min	0.84%	C+
All United Airlines on GRR–ORD	1,075	65.1%	73 min	1.30%	C
All carriers on GRR–ORD	4,038	68.3%	87 min	2.77%	C
United Airlines, whole network	821,041	79.0%	72 min	1.01%	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 82.0% on time and its weakest Jan–Mar 2026 at 61.4%, a swing of 21 points on roughly 89 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 202591 flights82.0%
Oct–Dec 202592 flights62.0%
Jan–Mar 202689 flights61.4%
Apr–Jun 202685 flights78.8%

Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, UA 2099 did best on Tuesday at 82.7% on time and worst on Monday at 56.0%. Each day rests on about 51 flights, so a gap of 27 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 2099 runs late

One category carries most of the weight here. Carrier accounts for 53% of the 6,401 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
53%
National Airspace System
46%
Extreme weather
2%

The largest share of delay minutes, 53%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,362 of the 6,401 delay minutes reported here. The split is drawn from 6,401 delay minutes reported on UA 2099.

Cancellations are rare at 0.84%, below the national 1.81% 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

8.2% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

The same number turns up on five other city pairs in the data, including ORD to SEA (155), ORD to IAH (70) and ORD to DCA (58), 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. 357 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 70.9% on time with 0.84% cancelled over 357 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures