Aviation Data
EN
EnglishTiếng Việt

216 km · Domestic

Washington Dulles (IAD) – Philadelphia (PHL)

In July 2026, 110 flights operated between Washington Dulles and Philadelphia (both directions), and 82.7% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods10 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January–13–
February94▼ 55.6%
March–––
April–––
May–29–
June–67–
July–110–
August–––
September2––
October34–in progress
November90––
December56––

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods10 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January–84.6%–
February77.8%50.0%▼ 35.7%
March–––
April–––
May–93.1%–
June–95.5%–
July–82.7%–
August–––
September100.0%––
October94.1%–in progress
November88.9%––
December76.8%––

Cancelled flights by month

The most recent periods10 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January–1–
February00–
March–––
April–––
May–0–
June–3–
July–4–
August–––
September0––
October0–in progress
November10––
December0––

Airlines on this route

  1. Republic Airways 97.7%
  2. United Airlines 2.3%

Dec 1, 2024 – Jul 31, 2026

By direction

IAD → PHL

Scheduled flights
217
Flights operated
208
Cancelled
9 · 4.1%
On-time departures
83.7%

PHL → IAD

Scheduled flights
216
Flights operated
207
Cancelled
9 · 4.2%
On-time departures
89.9%

IAD → PHL and PHL → IAD counted separately.

Airlines on this route

Dec 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Republic Airways YX 423 97.7% 86.9% 18
United Airlines UA 10 2.3% 80.0% 0

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Dec 3, 2024 → Jul 31, 2026

Recorded flights433IAD–PHL

Departure hour

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 72 · 72 recorded · 71 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 69 · 69 recorded · 66 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · 71 · 71 recorded · 68 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 37 · 37 recorded · 37 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 15:00 · 37 · 37 recorded · 35 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 37 · 37 recorded · 35 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · 6 · 6 recorded · 5 measured · Source: the US BTS 20:00 · 31 · 31 recorded · 29 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · 72 · 72 recorded · 68 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:00Fewer than 200 measured departures—7172
07:00No observations———
08:00Fewer than 200 measured departures—6669
09:00No observations———
10:00Fewer than 200 measured departures—6871
11:00No observations———
12:00Fewer than 200 measured departures—3737
13:00No observations———
14:00Fewer than 200 measured departures—11
15:00Fewer than 200 measured departures—3537
16:00No observations———
17:00Fewer than 200 measured departures—3537
18:00No observations———
19:00Fewer than 200 measured departures—56
20:00Fewer than 200 measured departures—2931
21:00No observations———
22:00Fewer than 200 measured departures—6872
23:00No observations———

Day of week

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 75 · 75 recorded · 74 measured · Source: the US BTS Tuesday · 64 · 64 recorded · 60 measured · Source: the US BTS Wednesday · 64 · 64 recorded · 64 measured · Source: the US BTS Thursday · 74 · 74 recorded · 71 measured · Source: the US BTS Friday · 64 · 64 recorded · 58 measured · Source: the US BTS Saturday · 28 · 28 recorded · 26 measured · Source: the US BTS Sunday · 64 · 64 recorded · 62 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—7475
TuesdayFewer than 200 measured departures—6064
WednesdayFewer than 200 measured departures—6464
ThursdayFewer than 200 measured departures—7174
FridayFewer than 200 measured departures—5864
SaturdayFewer than 200 measured departures—2628
SundayFewer than 200 measured departures—6264

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 14 · 14 recorded · 13 measured · Source: the US BTS Feb · 13 · 13 recorded · 13 measured · Source: the US BTS Mar · No observations · 0 recorded · 0 measured · Source: the US BTS Apr · No observations · 0 recorded · 0 measured · Source: the US BTS May · 29 · 29 recorded · 29 measured · Source: the US BTS Jun · 70 · 70 recorded · 67 measured · Source: the US BTS Jul · 114 · 114 recorded · 110 measured · Source: the US BTS Aug · No observations · 0 recorded · 0 measured · Source: the US BTS Sep · 2 · 2 recorded · 2 measured · Source: the US BTS Oct · 34 · 34 recorded · 34 measured · Source: the US BTS Nov · 100 · 100 recorded · 90 measured · Source: the US BTS Dec · 57 · 57 recorded · 57 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—1314
FebFewer than 200 measured departures—1313
MarNo observations———
AprNo observations———
MayFewer than 200 measured departures—2929
JunFewer than 200 measured departures—6770
JulFewer than 200 measured departures—110114
AugNo observations———
SepFewer than 200 measured departures—22
OctFewer than 200 measured departures—3434
NovFewer than 200 measured departures—90100
DecFewer than 200 measured departures—5757

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 83.1% 360
  • Delayed >15 min 12.7% 55
  • Cancelled 4.2% 18
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

9
9 of 9
Flight numbersBy direction DeparturesOn time
YX3693 PHL → IAD 69 92.7%
YX3494 PHL → IAD 48 91.1%
YX3698 IAD → PHL 48 82.2%
YX3541 IAD → PHL 37 89.2%
YX3593 PHL → IAD 37 91.4%
YX3502 IAD → PHL 35 75.8%
YX3497 IAD → PHL 34 90.6%
YX3605 PHL → IAD 30 89.3%
YX3707 IAD → PHL 30 85.7%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 110 4 82.7%
June 2026 67 3 95.5%
May 2026 29 0 93.1%
February 2026 4 −55.6% 0 50.0%
January 2026 13 1 84.6%
December 2025 56 +5,500.0% 0 76.8%
November 2025 90 10 88.9%
October 2025 34 0 94.1%
September 2025 2 0 100.0%
February 2025 9 0 77.8%
December 2024 1 0 100.0%

How to read this chart

Loading the guide…