Carrier route record
OOIAD→MSP
SkyWest Airlines · Washington to Minneapolis
- Flights
- 851
- Period
- September 2025 to August 2026
- Share of route
- 83%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on IAD to MSP earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 851 flights, with a median arrival 12 minutes early.
Set against the rest of the country, SkyWest's IAD to MSP record is 9 points better than the US average of 77.3%. That gap is worth roughly 85 fewer late arrivals for every thousand flights.
Key figures
On time
85.8%
Arrivals under 15 minutes late, of 839 completed flights
Avg delay
104 min
Across delayed arrivals only, not all flights
Cancelled
1.18%
National rate is 1.89%
Whole route
85.9%
Every carrier on IAD to MSP, 1,026 flights
These figures cover 851 flights between September 2025 and August 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
SkyWest against every carrier on IAD to MSP
SkyWest flew 851 of the 1,026 flights on IAD to MSP, most of the route. Its 85.8% on time is about level with the route as a whole at 85.9%. Ranked by on-time rate it is number three of four carriers on the route, where the range runs from Delta at 100.0% to Republic at 83.5%. Three of those carriers flew fewer than 365 flights here, so treat their positions as rough.
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+ |
| United Airlinesthin sample | 64 | 90.6% | 40 min | 0.00% | A+ |
| SkyWest Airlines (this page) | 851 | 85.8% | 104 min | 1.18% | A |
| Republic Airwaysthin sample | 109 | 83.5% | 69 min | 4.59% | B− |
Flight by flight
SkyWest flight numbers on IAD to MSP
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.
Departure window
When SkyWest runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 15 points, against half a point between the best and worst carrier.
- 5am–8am340 flights92.2%
- 8am–11am—
- 11am–2pm209 flights85.6%
- 2pm–5pm128 flights77.6%
- 5pm–8pm174 flights79.5%
- 8pm–5am—
Scale runs 70% 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 77.6% for the afternoon window. That is 15 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 340 flights scheduled in it.
Across the year
SkyWest on IAD to MSP through the year
September is the best month on the calendar at 95.0% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. July was the busiest month here, with 89 flights.
Across the week, Thursday is the strongest day at 90.2% on time and Monday the weakest at 82.3%, a spread of 8 points.
Arrival by arrival
How late SkyWest on IAD to MSP runs when it is late
SkyWest on IAD to MSP often beats the schedule: 372 of 839 completed flights, 44%, arrived 15 minutes or more early. When SkyWest on IAD to MSP is late it tends to be very late: 60 of its 119 late arrivals were an hour or more behind, and 27 were two hours or more.
- 15+ min early372 flights44.3%
- Within 15 min348 flights41.5%
- 15–29 min late32 flights3.8%
- 30–59 min late27 flights3.2%
- 1–2 hours late33 flights3.9%
- 2+ hours late27 flights3.2%
Scale runs 0% to 100%.
Share of 839 completed flights by arrival against schedule.
30 of 127 late departures made up the time and arrived on time, 24% of them. 22 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on IAD to MSP
The latest arrival of the period was on 19 January 2026, 17 hours 12 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 January 2026 | 17 hours 12 minutes | Carrier |
| 10 April 2026 | 12 hours 33 minutes | Carrier |
| 23 January 2026 | 8 hours 36 minutes | Carrier |
| 25 March 2026 | 8 hours 18 minutes | Carrier |
| 6 December 2025 | 6 hours 31 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 71% of the 12,000 delay minutes carriers reported here, and the remaining four split what is left.
- 71%Carrier
- 18%Extreme weather
- 10%National Airspace System
- 1%Security
Extreme weather accounts for 18% 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 3.0 times the usual weather exposure. The split is drawn from 12,401 reported delay minutes.
The largest share of delay minutes, 71%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 8,834 of the 12,000 delay minutes reported here.
Cancellations sit at 1.18% against a national 1.89%, which is ordinary. Diversions add another 0.24%.
Connections and stage length
What a delay here costs
7.2% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.
The 907 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 80.3% on time across 849 flights, 6 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 6 points of difference.
One caution: this is a thin sample. 851 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 SkyWest on IAD to MSP
Put together: treat all of this as provisional. 851 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 85.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 839 completed flights over 12 months sit behind that.
Related
Where to go next
- IAD to MSP, every carrier
- SkyWest on MSP to IAD, the return leg
- Republic Airways on IAD to MSP83.5%
- SkyWest Airlines network-wide record
- Washington Dulles International (IAD) delay statistics
- Minneapolis-St Paul International (MSP) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- Worst months to fly in the US, ranked by the data
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.