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616 km · Domestic

Detroit Metropolitan Wayne County (DTW) – Washington Dulles (IAD)

In July 2026, 244 flights operated between Detroit Metropolitan Wayne County and Washington Dulles (both directions), and 77.0% 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
January181166▼ 8.3%
February168154▼ 8.3%
March208249▲ 19.7%
April209219▲ 4.8%
May263286▲ 8.7%
June231237▲ 2.6%
July164244▲ 48.8%
August164––
September157––
October178–in progress
November71––
December135––
Year to date (Jan–Jul)1,4241,555▲ 9.2%

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
January71.3%58.4%▼ 18.1%
February78.6%68.8%▼ 12.5%
March88.5%66.7%▼ 24.6%
April88.5%87.2%▼ 1.5%
May84.4%85.0%▲ 0.7%
June77.1%84.8%▲ 10.0%
July61.6%77.0%▲ 25.0%
August74.4%––
September91.1%––
October87.1%–in progress
November71.8%––
December65.2%––
Year-to-date average (Jan–Jul)78.6%75.4%▼ 4.0%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January58▲ 60.0%
February02–
March07–
April00–
May03–
June03–
July72▼ 71.4%
August0––
September0––
October0–in progress
November0––
December1––
Year to date (Jan–Jul)1225▲ 108.3%

Airlines on this route

  1. SkyWest Airlines 73.3%
  2. Republic Airways 15.5%
  3. Delta Air Lines 8.4%
  4. United Airlines 2.1%
  5. Endeavor Air 0.7%

Oct 1, 2024 – Jul 31, 2026

By direction

DTW → IAD

Scheduled flights
2,160
Flights operated
2,141
Cancelled
19 · 0.9%
On-time departures
78.0%

IAD → DTW

Scheduled flights
2,135
Flights operated
2,115
Cancelled
20 · 0.9%
On-time departures
79.4%

DTW → IAD and IAD → DTW counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 3,147 73.3% 76.7% 25
Republic Airways YX 666 15.5% 83.9% 9
Delta Air Lines DL 360 8.4% 82.8% 5
United Airlines UA 91 2.1% 90.1% 0
Endeavor Air 9E 31 0.7% 90.3% 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 · Oct 12, 2024 → Jul 31, 2026

Lowest average delay14:00–15:0014.0min · 302 recorded · 302 measured
Gap to highest-delay hour16.4min14:00 ↔ 12:00
Recorded flights4,295DTW–IAD

Departure hour

On-time departures 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 · Fewer than 200 measured departures · 56 recorded · 54 measured · Source: the US BTS 06:00 · 85.9% · 600 recorded · 594 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 178 recorded · 178 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 124 recorded · 124 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 150 recorded · 150 measured · Source: the US BTS 10:00 · 82.3% · 476 recorded · 474 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 103 recorded · 103 measured · Source: the US BTS 12:00 · 68.0% · 230 recorded · 228 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 159 recorded · 159 measured · Source: the US BTS 14:00 · 77.8% · 302 recorded · 302 measured · Source: the US BTS 15:00 · 66.7% · 333 recorded · 327 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 20 recorded · 20 measured · Source: the US BTS 17:00 · 71.2% · 704 recorded · 695 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 45 recorded · 45 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 124 recorded · 122 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 10 recorded · 10 measured · Source: the US BTS 21:00 · 72.0% · 549 recorded · 542 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 132 recorded · 129 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.

Average departure delay 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 · Fewer than 200 measured departures · 56 recorded · 54 measured · Source: the US BTS 06:00 · 16.5 min · 600 recorded · 594 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 178 recorded · 178 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 124 recorded · 124 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 150 recorded · 150 measured · Source: the US BTS 10:00 · 17.7 min · 476 recorded · 474 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 103 recorded · 103 measured · Source: the US BTS 12:00 · 30.4 min · 230 recorded · 228 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 159 recorded · 159 measured · Source: the US BTS 14:00 · 14.0 min · 302 recorded · 302 measured · Source: the US BTS 15:00 · 27.9 min · 333 recorded · 327 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 20 recorded · 20 measured · Source: the US BTS 17:00 · 28.7 min · 704 recorded · 695 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 45 recorded · 45 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 124 recorded · 122 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 10 recorded · 10 measured · Source: the US BTS 21:00 · 28.9 min · 549 recorded · 542 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 132 recorded · 129 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.

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 · 56 · 56 recorded · 54 measured · Source: the US BTS 06:00 · 600 · 600 recorded · 594 measured · Source: the US BTS 07:00 · 178 · 178 recorded · 178 measured · Source: the US BTS 08:00 · 124 · 124 recorded · 124 measured · Source: the US BTS 09:00 · 150 · 150 recorded · 150 measured · Source: the US BTS 10:00 · 476 · 476 recorded · 474 measured · Source: the US BTS 11:00 · 103 · 103 recorded · 103 measured · Source: the US BTS 12:00 · 230 · 230 recorded · 228 measured · Source: the US BTS 13:00 · 159 · 159 recorded · 159 measured · Source: the US BTS 14:00 · 302 · 302 recorded · 302 measured · Source: the US BTS 15:00 · 333 · 333 recorded · 327 measured · Source: the US BTS 16:00 · 20 · 20 recorded · 20 measured · Source: the US BTS 17:00 · 704 · 704 recorded · 695 measured · Source: the US BTS 18:00 · 45 · 45 recorded · 45 measured · Source: the US BTS 19:00 · 124 · 124 recorded · 122 measured · Source: the US BTS 20:00 · 10 · 10 recorded · 10 measured · Source: the US BTS 21:00 · 549 · 549 recorded · 542 measured · Source: the US BTS 22:00 · 132 · 132 recorded · 129 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.

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———
05:00Fewer than 200 measured departures—5456
06:0085.9%16.5 min594600
07:00Fewer than 200 measured departures—178178
08:00Fewer than 200 measured departures—124124
09:00Fewer than 200 measured departures—150150
10:0082.3%17.7 min474476
11:00Fewer than 200 measured departures—103103
12:0068.0%30.4 min228230
13:00Fewer than 200 measured departures—159159
14:0077.8%14.0 min302302
15:0066.7%27.9 min327333
16:00Fewer than 200 measured departures—2020
17:0071.2%28.7 min695704
18:00Fewer than 200 measured departures—4545
19:00Fewer than 200 measured departures—122124
20:00Fewer than 200 measured departures—1010
21:0072.0%28.9 min542549
22:00Fewer than 200 measured departures—129132
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 75.5% · 607 recorded · 600 measured · Source: the US BTS Tuesday · 79.3% · 608 recorded · 605 measured · Source: the US BTS Wednesday · 80.0% · 617 recorded · 614 measured · Source: the US BTS Thursday · 80.6% · 624 recorded · 618 measured · Source: the US BTS Friday · 77.4% · 629 recorded · 624 measured · Source: the US BTS Saturday · 79.9% · 603 recorded · 602 measured · Source: the US BTS Sunday · 78.1% · 607 recorded · 593 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 · 22.5 min · 607 recorded · 600 measured · Source: the US BTS Tuesday · 21.2 min · 608 recorded · 605 measured · Source: the US BTS Wednesday · 16.8 min · 617 recorded · 614 measured · Source: the US BTS Thursday · 15.3 min · 624 recorded · 618 measured · Source: the US BTS Friday · 24.0 min · 629 recorded · 624 measured · Source: the US BTS Saturday · 16.8 min · 603 recorded · 602 measured · Source: the US BTS Sunday · 16.9 min · 607 recorded · 593 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 · 607 · 607 recorded · 600 measured · Source: the US BTS Tuesday · 608 · 608 recorded · 605 measured · Source: the US BTS Wednesday · 617 · 617 recorded · 614 measured · Source: the US BTS Thursday · 624 · 624 recorded · 618 measured · Source: the US BTS Friday · 629 · 629 recorded · 624 measured · Source: the US BTS Saturday · 603 · 603 recorded · 602 measured · Source: the US BTS Sunday · 607 · 607 recorded · 593 measured · Source: the US BTS

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

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday75.5%22.5 min600607
Tuesday79.3%21.2 min605608
Wednesday80.0%16.8 min614617
Thursday80.6%15.3 min618624
Friday77.4%24.0 min624629
Saturday79.9%16.8 min602603
Sunday78.1%16.9 min593607

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 · 65.1% · 360 recorded · 347 measured · Source: the US BTS Feb · 73.9% · 324 recorded · 322 measured · Source: the US BTS Mar · 76.6% · 464 recorded · 457 measured · Source: the US BTS Apr · 87.9% · 428 recorded · 428 measured · Source: the US BTS May · 84.7% · 552 recorded · 549 measured · Source: the US BTS Jun · 81.0% · 471 recorded · 468 measured · Source: the US BTS Jul · 70.8% · 417 recorded · 408 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 164 recorded · 164 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 157 recorded · 157 measured · Source: the US BTS Oct · 87.6% · 322 recorded · 322 measured · Source: the US BTS Nov · 75.6% · 283 recorded · 283 measured · Source: the US BTS Dec · 75.5% · 353 recorded · 351 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 · 32.7 min · 360 recorded · 347 measured · Source: the US BTS Feb · 21.2 min · 324 recorded · 322 measured · Source: the US BTS Mar · 21.7 min · 464 recorded · 457 measured · Source: the US BTS Apr · 7.4 min · 428 recorded · 428 measured · Source: the US BTS May · 14.4 min · 552 recorded · 549 measured · Source: the US BTS Jun · 16.6 min · 471 recorded · 468 measured · Source: the US BTS Jul · 30.0 min · 417 recorded · 408 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 164 recorded · 164 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 157 recorded · 157 measured · Source: the US BTS Oct · 1.9 min · 322 recorded · 322 measured · Source: the US BTS Nov · 25.3 min · 283 recorded · 283 measured · Source: the US BTS Dec · 31.0 min · 353 recorded · 351 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 · 360 · 360 recorded · 347 measured · Source: the US BTS Feb · 324 · 324 recorded · 322 measured · Source: the US BTS Mar · 464 · 464 recorded · 457 measured · Source: the US BTS Apr · 428 · 428 recorded · 428 measured · Source: the US BTS May · 552 · 552 recorded · 549 measured · Source: the US BTS Jun · 471 · 471 recorded · 468 measured · Source: the US BTS Jul · 417 · 417 recorded · 408 measured · Source: the US BTS Aug · 164 · 164 recorded · 164 measured · Source: the US BTS Sep · 157 · 157 recorded · 157 measured · Source: the US BTS Oct · 322 · 322 recorded · 322 measured · Source: the US BTS Nov · 283 · 283 recorded · 283 measured · Source: the US BTS Dec · 353 · 353 recorded · 351 measured · Source: the US BTS

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

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan65.1%32.7 min347360
Feb73.9%21.2 min322324
Mar76.6%21.7 min457464
Apr87.9%7.4 min428428
May84.7%14.4 min549552
Jun81.0%16.6 min468471
Jul70.8%30.0 min408417
AugFewer than 200 measured departures—164164
SepFewer than 200 measured departures—157157
Oct87.6%1.9 min322322
Nov75.6%25.3 min283283
Dec75.5%31.0 min351353

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 78.0% 3,349
  • Delayed >15 min 21.1% 907
  • Cancelled 0.9% 39
  • 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

62
62 of 62
Flight numbersBy direction DeparturesOn time
OO3776 IAD → DTW 165 63.8%
OO3776 DTW → IAD 165 71.8%
OO4038 DTW → IAD 101 88.1%
OO4038 IAD → DTW 101 88.1%
OO3826 IAD → DTW 86 84.9%
OO3988 DTW → IAD 86 67.4%
DL1787 IAD → DTW 78 77.3%
DL1787 DTW → IAD 78 76.3%
YX3500 DTW → IAD 72 91.7%
OO4104 DTW → IAD 68 63.2%
OO4104 IAD → DTW 67 61.2%
OO3796 DTW → IAD 63 87.3%
OO3648 IAD → DTW 62 88.3%
OO3650 IAD → DTW 62 62.9%
OO3650 DTW → IAD 62 71.0%
OO3659 DTW → IAD 62 78.7%
OO3677 DTW → IAD 62 74.2%
OO3677 IAD → DTW 62 88.7%
OO3931 IAD → DTW 62 74.6%
OO3939 DTW → IAD 62 58.3%
OO3939 IAD → DTW 62 56.7%
OO3971 DTW → IAD 62 69.5%
OO3910 DTW → IAD 60 78.0%
OO3796 IAD → DTW 59 93.2%
OO3804 DTW → IAD 59 86.4%
OO3788 DTW → IAD 58 74.1%
DL2884 IAD → DTW 48 85.4%
DL2884 DTW → IAD 48 93.8%
OO3864 DTW → IAD 48 85.4%
YX3643 IAD → DTW 45 70.5%
OO3631 IAD → DTW 38 73.7%
OO3671 IAD → DTW 38 86.8%
OO3666 DTW → IAD 37 81.1%
YX3495 IAD → DTW 37 81.1%
OO3868 IAD → DTW 36 71.4%
OO3868 DTW → IAD 36 69.4%
OO3888 IAD → DTW 36 77.8%
OO3910 IAD → DTW 36 71.4%
OO3960 DTW → IAD 36 52.8%
OO4047 IAD → DTW 36 88.9%
OO3843 IAD → DTW 35 76.5%
YX3441 DTW → IAD 35 88.6%
YX3502 IAD → DTW 35 88.2%
OO3697 DTW → IAD 34 45.5%
OO3877 DTW → IAD 34 69.7%
OO3877 IAD → DTW 34 52.9%
YX3623 IAD → DTW 34 79.4%
OO3516 IAD → DTW 32 90.6%
OO3516 DTW → IAD 32 90.6%
OO3518 DTW → IAD 32 75.0%
OO3537 IAD → DTW 32 93.8%
OO3580 IAD → DTW 32 78.1%
OO3580 DTW → IAD 32 84.4%
DL1362 IAD → DTW 31 90.3%
DL1537 DTW → IAD 31 87.1%
OO3818 IAD → DTW 31 80.7%
OO3818 DTW → IAD 31 77.4%
OO3849 IAD → DTW 31 90.3%
OO3849 DTW → IAD 31 93.6%
OO3626 IAD → DTW 30 100.0%
OO3636 IAD → DTW 30 96.7%
OO3888 DTW → IAD 30 100.0%

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 244 +48.8% 2 77.0%
June 2026 237 +2.6% 3 84.8%
May 2026 286 +8.7% 3 85.0%
April 2026 219 +4.8% 0 87.2%
March 2026 249 +19.7% 7 66.7%
February 2026 154 −8.3% 2 68.8%
January 2026 166 −8.3% 8 58.4%
December 2025 135 −37.5% 1 65.2%
November 2025 71 −66.5% 0 71.8%
October 2025 178 +23.6% 0 87.1%
September 2025 157 0 91.1%
August 2025 164 0 74.4%
July 2025 164 7 61.6%
June 2025 231 0 77.1%
May 2025 263 0 84.4%
April 2025 209 0 88.5%
March 2025 208 0 88.5%
February 2025 168 0 78.6%
January 2025 181 5 71.3%
December 2024 216 1 81.9%
November 2024 212 0 76.9%
October 2024 144 0 88.2%

How to read this chart

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