Carrier route record
YXIAD→JAX
Republic Airways · Washington to Jacksonville
- Flights
- 120
- Period
- July 2025 to June 2026
- Share of route
- 16%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Republic Airways.
Republic on IAD to JAX lands a B−, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That is a workable record, not a spotless one. That rests on 120 flights, with a median arrival 16 minutes early.
Set against the rest of the country, Republic's IAD to JAX record is 6 points better than the US average of 77.6%. That gap is worth roughly 57 fewer late arrivals for every thousand flights.
Key figures
On time
83.3%
Arrivals under 15 minutes late, of 114 completed flights
Avg delay
48 min
Across delayed arrivals only, not all flights
Cancelled
5.00%
National rate is 1.81%
Whole route
83.1%
Every carrier on IAD to JAX, 772 flights
These figures cover 120 flights between July 2025 and June 2026. The median arrival is 16 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
Republic against every carrier on IAD to JAX
Republic flew 120 of the 772 flights on IAD to JAX, about 16% of it. Its 83.3% on time is about level with the route as a whole at 83.1%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from United at 86.2% to Allegiant at 51.7%. One 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 |
|---|---|---|---|---|---|
| United Airlines | 592 | 86.2% | 81 min | 0.68% | A+ |
| Republic Airways (this page)thin sample | 120 | 83.3% | 48 min | 5.00% | B− |
| Allegiant Airthin sample | 60 | 51.7% | 108 min | 0.00% | F+ |
Departure window
When Republic runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 120 flights.
There are not enough flights in each departure window to split Republic's IAD to JAX record by time of day without the percentages moving on noise. The headline rate of 83.3% is the reliable figure here.
Across the year
Republic on IAD to JAX through the year
- Jul–Sep 202591 flights83.5%
- Oct–Dec 202524 flights—
- Jan–Mar 20265 flights—
Scale runs 75% to 90%. 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 83.3% on time across 120 flights.
Split by quarter, Republic on IAD to JAX logged 91 flights in Jul–Sep 2025, 24 flights in Oct–Dec 2025 and 5 flights in Jan–Mar 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 83.3% annual figure is the one to use.
Delay causes
Why Republic 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 911 reported delay minutes.
- 30%National Airspace System
- 27%Late-arriving aircraft
- 27%Carrier
- 17%Extreme weather
Extreme weather accounts for 17% 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 2.7 times the usual weather exposure. The split is drawn from 911 reported delay minutes.
Cancellations run at 5.00%, against 1.81% nationally. That is about one flight in twenty 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
Badly late arrivals are rare here: only 4.4% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 631 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 94.0% on time across 120 flights, 11 points above 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 11 points of difference.
One caution: this is a thin sample. 120 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 Republic on IAD to JAX
Put together: the delay figures matter less here than the 5.00% cancellation rate. A late arrival costs you roughly 50 minutes; a cancelled flight costs you the day. Book the 5pm–8pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 114 completed flights over 12 months sit behind that.
Related
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.