Carrier route record

F9MCO→IAD

Frontier Airlines · Orlando to Washington

Flights: 280
Period: July 2025 to June 2026
Share of route: 13%
Carriers: 2

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

Frontier on MCO to IAD lands a B, 4 points better than the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 280 flights, with a median arrival 14 minutes early.

Set against the rest of the country, Frontier's MCO to IAD record is 4 points better than the US average of 77.6%. That gap is worth roughly 40 fewer late arrivals for every thousand flights.

On time

81.6%

Arrivals under 15 minutes late, of 272 completed flights

Avg delay

69 min

Across delayed arrivals only, not all flights

Cancelled

2.86%

National rate is 1.81%

Whole route

82.7%

Every carrier on MCO to IAD, 2,178 flights

These figures cover 280 flights between July 2025 and June 2026. The median arrival is 14 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.

Carrier by carrier

Frontier against every carrier on MCO to IAD

Frontier flew 280 of the 2,178 flights on MCO to IAD, about 13% of it. Its 81.6% on time is about level with the route as a whole at 82.7%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 82.9% to Frontier at 81.6%.

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 MCO to IAD
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlines	1,898	82.9%	82 min	0.63%	B+
Frontier Airlines (this page)thin sample	280	81.6%	69 min	2.86%	B

Departure window

When Frontier runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 41 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–8am71 flights98.6%
8am–11am69 flights84.8%
11am–2pm7 flights—
2pm–5pm75 flights79.5%
5pm–8pm58 flights57.9%
8pm–5am—

Scale runs 50% to 100%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 57.9% on time, against 98.6% for the 5am–8am 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 2pm–5pm window is the busiest, with 75 flights scheduled in it.

Across the year

Frontier on MCO to IAD through the year

Jul–Sep 202565 flights71.0%
Oct–Dec 202563 flights77.4%
Jan–Mar 202654 flights90.4%
Apr–Jun 202698 flights86.5%

Scale runs 65% to 95%. 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 81.6% on time across 280 flights.

Frontier on MCO to IAD did not run the same all year. Its best quarter was Jan–Mar 2026 at 90.4% on time and its weakest Jul–Sep 2025 at 71.0%, a swing of 19 points on roughly 70 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, Monday is the strongest day at 86.5% on time and Sunday the weakest at 73.6%. 13 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Frontier runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 3,442 reported delay minutes.

Late-arriving aircraft
37%
Carrier
36%
National Airspace System
27%
Extreme weather
1%

37% 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 3,442 reported delay minutes here, that single category outweighs weather by 37 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. The split is drawn from 3,442 reported delay minutes.

The largest share of delay minutes, 36%, 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 1,230 of the 3,442 delay minutes reported here.

Cancellations run at 2.86%, against 1.81% nationally. That is roughly one flight in 30 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

5.9% 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 a little over an hour, which a normal layover absorbs.

The 758 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg is a different operation and performs like one: it runs 72.3% on time across 279 flights, 9 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 9 points of difference.

One caution: this is a thin sample. 280 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 Frontier on MCO to IAD

Put together: the delay figures matter less here than the 2.86% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 272 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