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Route · DAY → PHL · 2020–2025 BTS data

Dayton to Philadelphia

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DAY to PHL (Dayton to Philadelphia) ranks #4141 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

90.7%
On-time
+11.7 pts
vs US avg
86 min
Delay when late
1,510
Flights
#4141 of 4927
Corpus placement

Cancelled

1.1%

Best Month

Jan 2023 92%

Worst Month

Nov 2021 91%

Distance

477 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 31 4 2 0 OH
Oct 2025 30 2 0 1 OH
Sep 2025 30 3 0 0 OH
May 2025 34 8 1 0 OH
Apr 2025 30 1 0 0 OH
Mar 2025 31 1 0 0 OH
Apr 2023 30 2 1 0 OH
Mar 2023 31 3 0 0 OH
Feb 2023 30 1 0 0 OH
Jan 2023 52 4 1 0 OH
Oct 2022 31 4 0 0 OH
Sep 2022 30 2 0 0 OH
Aug 2022 31 4 0 0 OH
Jul 2022 30 1 0 0 OH
Jun 2022 30 3 0 0 OH
May 2022 30 0 0 0 OH
Jan 2022 32 3 3 0 OH
Dec 2021 43 0 0 0 OH
Nov 2021 53 5 0 0 OH
Jul 2021 31 1 1 0 OH
Jun 2021 32 1 0 0 OH
Apr 2021 30 2 0 0 OH
Mar 2021 31 1 0 0 OH
Jan 2021 30 3 0 0 OH

DAY–PHL seasonal on-time pattern

Best: July (94.6%) · weakest: February (80.6%)

75%80%85%90%95%100% JanFebMarAprMayJunJulAugSepOctNovDec 94.6%

Strongest calendar month

July

94.6% on-time · ~43 flights/mo

Busiest calendar month

February

~70 flights/mo avg

Weakest calendar month

February

80.6% on-time · ~70 flights/mo

Cancellation Rate

1.1%

9 of 793 flights

Diversion Rate

0.1%

1 of 793 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

DAY - Dayton

Full on-time, delay-cause, and seasonal performance for Dayton, OH.

DAY on-time profile

PHL - Philadelphia

Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.

PHL on-time profile

Compare the two airports

See DAY and PHL side by side on delays, cancellations, and reliability.

Compare DAY vs PHL

Origin-hub reliability standing

Among DAY's stronger departures

DAY → PHL posts a 90.7% on-time rate, landing in the ≥85% band with 6 of 9 BTS-tracked routes leaving Dayton. The same hub also shows 3 mid-band and 0 challenged departures · fleet-wide on-time rank #107 of 4927 (highest on-time = #1).

What the Data Says About DAY to PHL

Dayton to Philadelphia (DAY to PHL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 90.7% on-time rate across 1,510 flights, with delays that do happen averaging 86.1 minutes. The corridor runs roughly 477 miles and is served by 1 carrier. Over the most recent 24 months, 9 of 793 flights were cancelled (1.1%) and 1 diverted (0.1%).

Monthly on-time rates stay fairly consistent on this route, ranging from 91% in Nov 2021 to 92% in Jan 2023 - only a 2-point spread.

On the multi-year calendar, DAY–PHL peaks in July at 94.6% on-time while February carries the heaviest traffic (~70 flights per month) ; the softest month is February at 80.6%, a 14.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does DAY to PHL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, DAY to PHL ranks #4141 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from DAY to PHL? ▼
Flights from Dayton to Philadelphia have a 90.7% on-time rate based on 1,510 flights. The average delay is 86.1 minutes. The best recent month was Jan 2023 with 92% on-time.
What is the cancellation rate for DAY to PHL? ▼
Over the last 24 months, 1.1% of flights on this route were cancelled (9 of 793 flights) and 0.1% were diverted.
How far is the flight from DAY to PHL? ▼
The flight distance from Dayton (DAY) to Philadelphia (PHL) is approximately 477 miles. This route is served by 1 carrier.
When is the best time to fly from DAY to PHL? ▼
The best recent month for on-time performance was Jan 2023 (92% on-time). The worst was Nov 2021 (91% on-time). Consider booking during months with historically better performance.

Airports on this route

DAY Airport

Dayton
PHL Airport

Philadelphia
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using DAY–PHL data

DAY–PHL runs 11.7 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare DAY and PHL airport profiles: delay causes and top routes differ even on the same corridor. DAY airport
  • If your dates flex, July (94.6% on-time) beats February (80.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 90.7% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.