Route reliability record
GRB→MSP
Green Bay to Minneapolis
- Flights
- 811
- Period
- July 2025 to June 2026
- Distance
- 252 mi
- Carriers
- 2
This route lands a B, 4 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 811 GRB to MSP flights, with a median arrival 12 minutes early.
Best time to fly GRB to MSP: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 92.2% of the time and Tuesday flights 86.0%, against 81.1% for the route overall.
The US average over the same twelve months is 77.6%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
81.1%
Arrivals under 15 minutes late, of 799 completed flights
Avg delay
99 min
Across delayed arrivals only, not all flights
Cancelled
1.48%
National rate is 1.81%
Best carrier
SkyWest
81.1% on time across 809 flights
These figures cover 811 flights between July 2025 and June 2026. Beyond the headline rate, 9.5% 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.
Carrier by carrier
Which airline is most reliable on GRB to MSP
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Linesthin sample | 2 | 100.0% | — | 0.00% | A+ |
| SkyWest Airlines | 809 | 81.1% | 99 min | 1.48% | B |
Best ways to make this trip
The most reliable ways to fly Green Bay to Minneapolis
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 1 of the top 2 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. GRB → MSPGreen Bay to Minneapolis | SkyWest Airlines | 79.9% | 81.1% | 1.48% | 5am–8am, Tue (route) | — |
| 2. ATW → MSPAppleton to Minneapolis | SkyWest Airlines | 72.7% | 74.0% | 1.73% | 5am–8am, Sat | OO 3975 06:25 |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 20 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am260 flights92.2%
- 8am–11am—
- 11am–2pm223 flights81.7%
- 2pm–5pm328 flights72.0%
- 5pm–8pm—
- 8pm–5am—
Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 92.2% of the time, against 72.0% for the afternoon window. That is 20 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 328 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 36 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
November is the best month on the calendar at 90.5% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. May was the busiest month here, with 92 flights.
Across the week, Tuesday is the strongest day at 86.0% on time and Friday the weakest at 76.7%. 9 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
One category carries most of the weight here. Carrier accounts for 71% of the 15,000 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.
- 71%Carrier
- 24%Extreme weather
- 5%National Airspace System
- 0%Security
Extreme weather accounts for 24% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.8 times the usual weather exposure. The split is drawn from 14,935 reported delay minutes.
The largest share of delay minutes, 71%, 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 11,000 of the 15,000 delay minutes reported here.
Cancellations sit at 1.48% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here actually costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.5% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
At 252 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.
The return leg runs 79.2% on time across 812 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 811 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.
Work out the risk of missing a connection in MSP after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 811 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 81.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 799 completed flights over 12 months sit behind that.
Common questions
GRB to MSP questions
How often is GRB to MSP delayed?
About one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 18.9% of the 811 flights in this analysis, against 22.4% nationally. Delayed flights are late by an hour and a half on average.
How reliable is GRB to MSP compared with the rest of the country?
81.1% of flights arrive on time here against a national 77.6%, a difference of 4 points in its favour. That is worth a B on this site's grading scale.
What time of day has the fewest delays on GRB to MSP?
The 5am–8am departure window is the strongest at 92.2% on time. The 2pm–5pm window is the weakest at 72.0%, 20 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are September delays on GRB to MSP?
September is the weakest month at 55.0% on time, compared with 90.5% in November. Across the year that is 36 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- MSP to GRB — the return legseparate record
- Minneapolis-St Paul International (MSP) delay statistics
- GRB to ORD, a related route71.1%
- ORD to MSP, a related route69.7%
- GRB to DTW, a related route80.2%
- Delta Air Lines on-time record100.0%
- SkyWest Airlines on-time record81.1%
- The best time of day to fly, according to 7.04 million flight records
- How often a connection fails at the major US hubs
Direction matters. GRB to MSP and MSP to GRB are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.