Flight number record
OH 5484
PSA Airlines · Washington to Knoxville
- Route
- DCA → TYS
- Departs
- 19:49
- Flights
- 321
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OH 5484, check with PSA Airlines. PSA Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
OH 5484 earns a D−, which is as low as this site's scale goes for a reason. Only 57.3% of flights arrive inside the 15-minute window, 20 points worse than the national rate of 77.3%. Late arrivals average close to two hours. Treat any tight connection here as a coin flip. That rests on 321 flights, with a median arrival 3 minutes late.
The national on-time rate over the same period is 77.3%, so OH 5484 runs 20 points behind the country as a whole. Across a thousand flights that is about 200 extra late arrivals.
Key figures
On time
57.3%
Arrivals under 15 minutes late, of 300 completed flights
Avg delay
101 min
Across delayed arrivals only, not all flights
Cancelled
5.92%
National rate is 1.89%
1 hour+ late
25.7%
National rate is 8.3%
These figures cover 321 flights between September 2025 and August 2026. Beyond the headline rate, 25.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OH 5484 flies
OH 5484 flies DCA to TYS without a single fixed slot. Its most common scheduled departure was 19:49, used on 93 of 321 flights, with 19:46 (56 flights) and 19:45 (43 flights) next.
- Departs 19:4993 flights29.0%
- Departs 19:4656 flights17.4%
- Departs 19:4543 flights13.4%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 19:49 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OH 5484 runs 11 points worse at 57.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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.
Against the route
OH 5484 next to DCA to TYS
Every carrier on DCA to TYS combined arrived on time 65.7% of the time across 1,021 flights, so OH 5484 is 8 points behind it. PSA flew 1,019 flights on the same city pair under all its flight numbers, including this one, and those ran 65.6% on time. Across its whole network PSA Airlines managed 73.5%, which this flight trails by 16 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OH 5484thin sample | 321 | 57.3% | 101 min | 5.92% | D− |
| All PSA Airlines on DCA–TYS | 1,019 | 65.6% | 97 min | 3.93% | C− |
| All carriers on DCA–TYS | 1,021 | 65.7% | 97 min | 3.92% | C− |
| PSA Airlines, whole network | 242,979 | 73.5% | 96 min | 4.80% | C− |
Across the year
OH 5484 quarter by quarter
OH 5484 did not run the same all year. Its best quarter was Apr–Jun 2026 at 65.1% on time and its weakest Jul–Sep 2026 at 30.6%, a swing of 34 points on roughly 80 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.
- Jul–Sep 202526 flights—
- Oct–Dec 202571 flights58.0%
- Jan–Mar 202677 flights59.2%
- Apr–Jun 202690 flights65.1%
- Jul–Sep 202657 flights30.6%
Scale runs 20% to 70%. Rows with fewer than 30 flights show a dash.
By weekday, OH 5484 did best on Sunday at 60.9% on time and worst on Thursday at 48.8%. Each day rests on about 46 flights, so a gap of 12 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OH 5484 runs when it is late
OH 5484 often beats the schedule: 80 of 300 completed flights, 27%, arrived 15 minutes or more early. When OH 5484 is late it tends to be very late: 77 of its 128 late arrivals were an hour or more behind, and 35 were two hours or more.
- 15+ min early80 flights26.7%
- Within 15 min92 flights30.7%
- 15–29 min late24 flights8.0%
- 30–59 min late27 flights9.0%
- 1–2 hours late42 flights14.0%
- 2+ hours late35 flights11.7%
Scale runs 0% to 100%.
Share of 300 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 130 departures that left 15 minutes late or more, only 14 made it up before arrival. 12 flights left on time and still arrived late.
The worst days
Worst days for OH 5484
The latest arrival of the period was on 12 February 2026, 14 hours 19 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across February, August and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 February 2026 | 14 hours 19 minutes | Carrier |
| 27 February 2026 | 11 hours 48 minutes | Carrier |
| 10 August 2026 | 5 hours 24 minutes | Extreme weather |
| 18 July 2026 | 4 hours 20 minutes | Extreme weather |
| 28 July 2026 | 4 hours 19 minutes | Late-arriving aircraft |
Delay causes
Why OH 5484 runs late
Late-arriving aircraft accounts for 61% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Late-arriving aircraft
- 24%Carrier
- 8%Extreme weather
- 7%National Airspace System
61% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 13,000 reported delay minutes here, that single category outweighs weather by 8 to one. The split is drawn from 12,945 delay minutes reported on OH 5484.
Cancellations run at 5.92%, against 1.89% 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 routes
What a delay on this flight costs
25.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
Every one of the 321 flights under OH 5484 in the data flew DCA to TYS. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 321 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 OH 5484
For a booking, the cancellation rate is the figure to plan around on OH 5484: 5.92% of its 321 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- DCA to TYS, every carrier and departure
- TYS to DCA, the return direction
- Ronald Reagan Washington National (DCA) delay statistics
- PSA Airlines on-time record
- Every PSA Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means PSA Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.