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3,141 km · Domestic

Washington Dulles (IAD) – Phoenix Sky Harbor (PHX)

In July 2026, 60 flights operated between Washington Dulles and Phoenix Sky Harbor (both directions), and 88.3% 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 periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January171189▲ 10.5%
February188162▼ 13.8%
March248232▼ 6.5%
April240182▼ 24.2%
May226192▼ 15.0%
June18066▼ 63.3%
July18160▼ 66.9%
August176––
September174––
October194–in progress
November215––
December216––
Year to date (Jan–Jul)1,4341,083▼ 24.5%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January83.6%88.9%▲ 6.3%
February92.6%85.2%▼ 8.0%
March87.9%80.6%▼ 8.3%
April85.0%83.5%▼ 1.8%
May84.5%79.2%▼ 6.3%
June81.1%83.3%▲ 2.7%
July73.5%88.3%▲ 20.1%
August78.4%––
September86.2%––
October81.4%–in progress
November80.9%––
December81.9%––
Year-to-date average (Jan–Jul)84.0%84.1%▲ 0.1%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January37▲ 133.3%
February00–
March02–
April00–
May00–
June00–
July32▼ 33.3%
August1––
September0––
October0–in progress
November3––
December0––
Year to date (Jan–Jul)611▲ 83.3%

Airlines on this route

  1. United Airlines 71.1%
  2. Southwest Airlines 28.9%

Oct 1, 2024 – Jul 31, 2026

By direction

IAD → PHX

Scheduled flights
2,062
Flights operated
2,049
Cancelled
13 · 0.6%
On-time departures
81.6%

PHX → IAD

Scheduled flights
2,063
Flights operated
2,054
Cancelled
9 · 0.4%
On-time departures
86.8%

IAD → PHX and PHX → IAD counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 2,931 71.1% 88.7% 18
Southwest Airlines WN 1,194 28.9% 73.1% 4

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 · Oct 12, 2024 → Jul 31, 2026

Lowest average delay08:00–09:002.9min · 886 recorded · 881 measured
Gap to highest-delay hour13.7min08:00 ↔ 17:00
Recorded flights4,125IAD–PHX

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · Fewer than 200 measured departures · 5 recorded · 5 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 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 87 recorded · 87 measured · Source: the US BTS 08:00 · 92.5% · 886 recorded · 881 measured · Source: the US BTS 09:00 · 89.1% · 358 recorded · 358 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 150 recorded · 150 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 157 recorded · 156 measured · Source: the US BTS 12:00 · 88.6% · 398 recorded · 394 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 176 recorded · 176 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 124 recorded · 124 measured · Source: the US BTS 15:00 · 82.4% · 314 recorded · 313 measured · Source: the US BTS 16:00 · 66.0% · 210 recorded · 209 measured · Source: the US BTS 17:00 · 77.4% · 796 recorded · 792 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 60 recorded · 59 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 43 recorded · 43 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 12 recorded · 12 measured · Source: the US BTS 23:00 · 91.2% · 345 recorded · 340 measured · Source: the US BTS

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

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · Fewer than 200 measured departures · 5 recorded · 5 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 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 87 recorded · 87 measured · Source: the US BTS 08:00 · 2.9 min · 886 recorded · 881 measured · Source: the US BTS 09:00 · 3.2 min · 358 recorded · 358 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 150 recorded · 150 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 157 recorded · 156 measured · Source: the US BTS 12:00 · 5.7 min · 398 recorded · 394 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 176 recorded · 176 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 124 recorded · 124 measured · Source: the US BTS 15:00 · 7.6 min · 314 recorded · 313 measured · Source: the US BTS 16:00 · 16.3 min · 210 recorded · 209 measured · Source: the US BTS 17:00 · 16.7 min · 796 recorded · 792 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 60 recorded · 59 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 43 recorded · 43 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 12 recorded · 12 measured · Source: the US BTS 23:00 · 4.5 min · 345 recorded · 340 measured · Source: the US BTS

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

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · 5 · 5 recorded · 5 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 · 4 · 4 recorded · 4 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · 87 · 87 recorded · 87 measured · Source: the US BTS 08:00 · 886 · 886 recorded · 881 measured · Source: the US BTS 09:00 · 358 · 358 recorded · 358 measured · Source: the US BTS 10:00 · 150 · 150 recorded · 150 measured · Source: the US BTS 11:00 · 157 · 157 recorded · 156 measured · Source: the US BTS 12:00 · 398 · 398 recorded · 394 measured · Source: the US BTS 13:00 · 176 · 176 recorded · 176 measured · Source: the US BTS 14:00 · 124 · 124 recorded · 124 measured · Source: the US BTS 15:00 · 314 · 314 recorded · 313 measured · Source: the US BTS 16:00 · 210 · 210 recorded · 209 measured · Source: the US BTS 17:00 · 796 · 796 recorded · 792 measured · Source: the US BTS 18:00 · 60 · 60 recorded · 59 measured · Source: the US BTS 19:00 · 43 · 43 recorded · 43 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · 12 · 12 recorded · 12 measured · Source: the US BTS 23:00 · 345 · 345 recorded · 340 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00Fewer than 200 measured departures—55
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00Fewer than 200 measured departures—44
06:00No observations———
07:00Fewer than 200 measured departures—8787
08:0092.5%2.9 min881886
09:0089.1%3.2 min358358
10:00Fewer than 200 measured departures—150150
11:00Fewer than 200 measured departures—156157
12:0088.6%5.7 min394398
13:00Fewer than 200 measured departures—176176
14:00Fewer than 200 measured departures—124124
15:0082.4%7.6 min313314
16:0066.0%16.3 min209210
17:0077.4%16.7 min792796
18:00Fewer than 200 measured departures—5960
19:00Fewer than 200 measured departures—4343
20:00No observations———
21:00No observations———
22:00Fewer than 200 measured departures—1212
23:0091.2%4.5 min340345

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 84.1% · 602 recorded · 596 measured · Source: the US BTS Tuesday · 85.8% · 572 recorded · 569 measured · Source: the US BTS Wednesday · 84.8% · 576 recorded · 574 measured · Source: the US BTS Thursday · 85.2% · 588 recorded · 587 measured · Source: the US BTS Friday · 83.8% · 600 recorded · 600 measured · Source: the US BTS Saturday · 84.3% · 579 recorded · 578 measured · Source: the US BTS Sunday · 81.5% · 608 recorded · 599 measured · Source: the US BTS

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

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 7.2 min · 602 recorded · 596 measured · Source: the US BTS Tuesday · 7.4 min · 572 recorded · 569 measured · Source: the US BTS Wednesday · 7.5 min · 576 recorded · 574 measured · Source: the US BTS Thursday · 6.2 min · 588 recorded · 587 measured · Source: the US BTS Friday · 8.7 min · 600 recorded · 600 measured · Source: the US BTS Saturday · 8.0 min · 579 recorded · 578 measured · Source: the US BTS Sunday · 13.9 min · 608 recorded · 599 measured · Source: the US BTS

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

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 602 · 602 recorded · 596 measured · Source: the US BTS Tuesday · 572 · 572 recorded · 569 measured · Source: the US BTS Wednesday · 576 · 576 recorded · 574 measured · Source: the US BTS Thursday · 588 · 588 recorded · 587 measured · Source: the US BTS Friday · 600 · 600 recorded · 600 measured · Source: the US BTS Saturday · 579 · 579 recorded · 578 measured · Source: the US BTS Sunday · 608 · 608 recorded · 599 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday84.1%7.2 min596602
Tuesday85.8%7.4 min569572
Wednesday84.8%7.5 min574576
Thursday85.2%6.2 min587588
Friday83.8%8.7 min600600
Saturday84.3%8.0 min578579
Sunday81.5%13.9 min599608

Month of year

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

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Jan · 86.4% · 370 recorded · 360 measured · Source: the US BTS Feb · 89.1% · 350 recorded · 350 measured · Source: the US BTS Mar · 84.4% · 482 recorded · 480 measured · Source: the US BTS Apr · 84.4% · 422 recorded · 422 measured · Source: the US BTS May · 82.1% · 418 recorded · 418 measured · Source: the US BTS Jun · 81.7% · 246 recorded · 246 measured · Source: the US BTS Jul · 77.2% · 246 recorded · 241 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 177 recorded · 176 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 174 recorded · 174 measured · Source: the US BTS Oct · 84.3% · 324 recorded · 324 measured · Source: the US BTS Nov · 85.3% · 452 recorded · 448 measured · Source: the US BTS Dec · 85.6% · 464 recorded · 464 measured · Source: the US BTS

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

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 6.0 min · 370 recorded · 360 measured · Source: the US BTS Feb · 2.0 min · 350 recorded · 350 measured · Source: the US BTS Mar · 7.6 min · 482 recorded · 480 measured · Source: the US BTS Apr · 6.6 min · 422 recorded · 422 measured · Source: the US BTS May · 10.4 min · 418 recorded · 418 measured · Source: the US BTS Jun · 15.3 min · 246 recorded · 246 measured · Source: the US BTS Jul · 21.0 min · 246 recorded · 241 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 177 recorded · 176 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 174 recorded · 174 measured · Source: the US BTS Oct · 6.2 min · 324 recorded · 324 measured · Source: the US BTS Nov · 7.4 min · 452 recorded · 448 measured · Source: the US BTS Dec · 7.1 min · 464 recorded · 464 measured · Source: the US BTS

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

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 370 · 370 recorded · 360 measured · Source: the US BTS Feb · 350 · 350 recorded · 350 measured · Source: the US BTS Mar · 482 · 482 recorded · 480 measured · Source: the US BTS Apr · 422 · 422 recorded · 422 measured · Source: the US BTS May · 418 · 418 recorded · 418 measured · Source: the US BTS Jun · 246 · 246 recorded · 246 measured · Source: the US BTS Jul · 246 · 246 recorded · 241 measured · Source: the US BTS Aug · 177 · 177 recorded · 176 measured · Source: the US BTS Sep · 174 · 174 recorded · 174 measured · Source: the US BTS Oct · 324 · 324 recorded · 324 measured · Source: the US BTS Nov · 452 · 452 recorded · 448 measured · Source: the US BTS Dec · 464 · 464 recorded · 464 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan86.4%6.0 min360370
Feb89.1%2.0 min350350
Mar84.4%7.6 min480482
Apr84.4%6.6 min422422
May82.1%10.4 min418418
Jun81.7%15.3 min246246
Jul77.2%21.0 min241246
AugFewer than 200 measured departures—176177
SepFewer than 200 measured departures—174174
Oct84.3%6.2 min324324
Nov85.3%7.4 min448452
Dec85.6%7.1 min464464

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 83.7% 3,454
  • Delayed >15 min 15.7% 649
  • Cancelled 0.5% 22
  • 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

39
39 of 39
Flight numbersBy direction DeparturesOn time
UA1938 IAD → PHX 574 81.4%
UA1873 PHX → IAD 347 91.6%
UA1017 PHX → IAD 228 85.0%
UA267 IAD → PHX 221 95.0%
UA483 PHX → IAD 218 88.8%
UA2268 PHX → IAD 141 90.1%
UA642 IAD → PHX 138 87.6%
UA755 PHX → IAD 93 88.2%
WN4291 PHX → IAD 86 79.1%
WN3656 IAD → PHX 82 78.1%
UA709 IAD → PHX 71 95.8%
UA1016 IAD → PHX 65 90.8%
WN1590 PHX → IAD 64 81.3%
WN1961 PHX → IAD 61 85.3%
WN3182 IAD → PHX 61 53.3%
WN2836 IAD → PHX 58 48.3%
WN3044 IAD → PHX 58 63.8%
WN2331 PHX → IAD 57 82.5%
WN4044 PHX → IAD 57 86.0%
UA1110 PHX → IAD 56 85.7%
WN3893 IAD → PHX 56 64.3%
WN816 PHX → IAD 55 83.3%
UA1847 IAD → PHX 52 100.0%
UA2303 PHX → IAD 52 98.1%
WN1010 IAD → PHX 47 82.6%
WN2678 IAD → PHX 45 70.5%
UA453 IAD → PHX 42 92.7%
UA1053 IAD → PHX 36 94.3%
UA2218 PHX → IAD 36 91.7%
UA2497 PHX → IAD 36 83.3%
UA1786 IAD → PHX 35 91.2%
UA2421 PHX → IAD 33 93.8%
WN1724 PHX → IAD 33 78.8%
WN237 IAD → PHX 33 87.9%
WN3756 IAD → PHX 33 45.5%
WN4166 PHX → IAD 33 66.7%
UA1224 PHX → IAD 32 87.5%
UA1858 IAD → PHX 32 87.5%
WN3101 IAD → PHX 31 45.2%

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 60 −66.9% 2 88.3%
June 2026 66 −63.3% 0 83.3%
May 2026 192 −15.0% 0 79.2%
April 2026 182 −24.2% 0 83.5%
March 2026 232 −6.5% 2 80.6%
February 2026 162 −13.8% 0 85.2%
January 2026 189 +10.5% 7 88.9%
December 2025 216 −12.9% 0 81.9%
November 2025 215 −7.7% 3 80.9%
October 2025 194 +49.2% 0 81.4%
September 2025 174 0 86.2%
August 2025 176 1 78.4%
July 2025 181 3 73.5%
June 2025 180 0 81.1%
May 2025 226 0 84.5%
April 2025 240 0 85.0%
March 2025 248 0 87.9%
February 2025 188 0 92.6%
January 2025 171 3 83.6%
December 2024 248 0 88.7%
November 2024 233 1 89.3%
October 2024 130 0 88.5%

How to read this chart

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