Carrier route record

OHDCA→GSO

PSA Airlines · Washington to Greensboro

Flights: 446
Period: July 2025 to June 2026
Share of route: 56%
Carriers: 3

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with PSA Airlines.

PSA on DCA to GSO sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 446 flights, with a median arrival 4 minutes early.

The national on-time rate over the same period is 77.6%, so PSA on DCA to GSO runs 9 points behind the country as a whole. Across a thousand flights that is about 88 extra late arrivals.

On time

68.8%

Arrivals under 15 minutes late, of 420 completed flights

Avg delay

78 min

Across delayed arrivals only, not all flights

Cancelled

5.83%

National rate is 1.81%

Whole route

73.1%

Every carrier on DCA to GSO, 799 flights

These figures cover 446 flights between July 2025 and June 2026. Beyond the headline rate, 15.2% 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.

Carrier by carrier

PSA against every carrier on DCA to GSO

PSA flew 446 of the 799 flights on DCA to GSO, most of the route. Its 68.8% on time is 4 points worse than the route as a whole, which runs 73.1%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Envoy at 80.0% to PSA at 68.8%. Two 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.

On-time performance by carrier on DCA to GSO
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Airthin sample	239	80.0%	113 min	5.44%	B−
Republic Airwaysthin sample	114	75.5%	65 min	3.51%	B−
PSA Airlines (this page)	446	68.8%	78 min	5.83%	C−

Departure window

When PSA runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 24 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–8am—
8am–11am103 flights85.3%
11am–2pm44 flights76.7%
2pm–5pm9 flights—
5pm–8pm174 flights61.9%
8pm–5am116 flights61.0%

Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.

The 8pm–5am window is where this operation falls apart: 61.0% on time, against 85.3% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5pm–8pm window is the busiest, with 174 flights scheduled in it.

Across the year

PSA on DCA to GSO through the year

Jul–Sep 2025141 flights72.1%
Oct–Dec 2025136 flights69.9%
Jan–Mar 2026101 flights58.6%
Apr–Jun 202668 flights73.4%

Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 68.8% on time across 446 flights.

PSA on DCA to GSO did not run the same all year. Its best quarter was Apr–Jun 2026 at 73.4% on time and its weakest Jan–Mar 2026 at 58.6%, a swing of 15 points on roughly 112 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.

Across the week, Saturday is the strongest day at 81.8% on time and Friday the weakest at 54.8%. 27 points is a smaller lever than departure hour, but it is free.

Delay causes

Why PSA runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 10,000 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.

Late-arriving aircraft
55%
Carrier
24%
Extreme weather
13%
National Airspace System
8%

Extreme weather accounts for 13% 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 2.1 times the usual weather exposure. The split is drawn from 10,269 reported delay minutes.

55% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 10,000 reported delay minutes here, that single category outweighs weather by 4 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit.

Cancellations run at 5.83%, against 1.81% nationally. That is roughly one flight in fifteen cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and stage length

What a delay here costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 15.2% 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 248 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 8am–11am window matters as much as it does.

The return leg runs 70.4% on time across 446 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. 446 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 PSA on DCA to GSO

Put together: the delay figures matter less here than the 5.83% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 420 completed flights over 12 months sit behind that.

Where to go next

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