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859 km · Domestic

Hartsfield Jackson Atlanta (ATL) – Washington Dulles (IAD)

In July 2026, 698 flights operated between Hartsfield Jackson Atlanta and Washington Dulles (both directions), and 68.9% 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
January516527▲ 2.1%
February516513▼ 0.6%
March628594▼ 5.4%
April629700▲ 11.3%
May695800▲ 15.1%
June677750▲ 10.8%
July677698▲ 3.1%
August683––
September630––
October666–in progress
November627––
December627––
Year to date (Jan–Jul)4,3384,582▲ 5.6%

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
January74.0%79.1%▲ 6.9%
February81.0%84.6%▲ 4.4%
March79.5%77.6%▼ 2.4%
April78.7%86.4%▲ 9.8%
May71.1%80.9%▲ 13.8%
June69.3%79.1%▲ 14.1%
July65.9%68.9%▲ 4.6%
August76.6%––
September85.2%––
October83.5%–in progress
November81.5%––
December70.3%––
Year-to-date average (Jan–Jul)74.2%79.5%▲ 7.1%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January2735▲ 29.6%
February011–
March417▲ 325.0%
April68▲ 33.3%
May311▲ 266.7%
June2512▼ 52.0%
July2934▲ 17.2%
August4––
September0––
October2–in progress
November17––
December15––
Year to date (Jan–Jul)94128▲ 36.2%

Airlines on this route

  1. Delta Air Lines 56.2%
  2. United Airlines 29.3%
  3. Frontier Airlines 13.7%
  4. Republic Airways 0.8%
  5. Southwest Airlines 0.0%

Oct 1, 2024 – Jul 31, 2026

By direction

ATL → IAD

Scheduled flights
7,009
Flights operated
6,880
Cancelled
129 · 1.8%
On-time departures
77.5%

IAD → ATL

Scheduled flights
7,005
Flights operated
6,870
Cancelled
135 · 1.9%
On-time departures
79.3%

ATL → IAD and IAD → ATL counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Delta Air Lines DL 7,870 56.2% 78.6% 167
United Airlines UA 4,108 29.3% 83.4% 36
Frontier Airlines F9 1,924 13.7% 66.4% 58
Republic Airways YX 110 0.8% 80.4% 3
Southwest Airlines WN 2 0.0% 100.0% 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 · Oct 12, 2024 → Jul 31, 2026

Lowest average delay08:00–09:004.0min · 856 recorded · 849 measured
Gap to highest-delay hour27.2min08:00 ↔ 21:00
Recorded flights14,014ATL–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 · 89.0% · 305 recorded · 299 measured · Source: the US BTS 06:00 · 88.0% · 872 recorded · 850 measured · Source: the US BTS 07:00 · 83.8% · 1,107 recorded · 1,081 measured · Source: the US BTS 08:00 · 89.5% · 856 recorded · 849 measured · Source: the US BTS 09:00 · 87.5% · 978 recorded · 965 measured · Source: the US BTS 10:00 · 82.6% · 907 recorded · 885 measured · Source: the US BTS 11:00 · 78.2% · 224 recorded · 220 measured · Source: the US BTS 12:00 · 82.6% · 1,697 recorded · 1,678 measured · Source: the US BTS 13:00 · 77.2% · 273 recorded · 267 measured · Source: the US BTS 14:00 · 76.2% · 1,164 recorded · 1,146 measured · Source: the US BTS 15:00 · 74.4% · 754 recorded · 745 measured · Source: the US BTS 16:00 · 66.7% · 510 recorded · 496 measured · Source: the US BTS 17:00 · 70.6% · 1,240 recorded · 1,223 measured · Source: the US BTS 18:00 · 72.5% · 341 recorded · 335 measured · Source: the US BTS 19:00 · 73.6% · 1,363 recorded · 1,336 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 150 recorded · 140 measured · Source: the US BTS 21:00 · 59.5% · 282 recorded · 274 measured · Source: the US BTS 22:00 · 68.9% · 960 recorded · 930 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 31 recorded · 31 measured · Source: the US BTS

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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 · 9.3 min · 305 recorded · 299 measured · Source: the US BTS 06:00 · 10.2 min · 872 recorded · 850 measured · Source: the US BTS 07:00 · 12.4 min · 1,107 recorded · 1,081 measured · Source: the US BTS 08:00 · 4.0 min · 856 recorded · 849 measured · Source: the US BTS 09:00 · 5.3 min · 978 recorded · 965 measured · Source: the US BTS 10:00 · 9.3 min · 907 recorded · 885 measured · Source: the US BTS 11:00 · 13.0 min · 224 recorded · 220 measured · Source: the US BTS 12:00 · 10.4 min · 1,697 recorded · 1,678 measured · Source: the US BTS 13:00 · 15.7 min · 273 recorded · 267 measured · Source: the US BTS 14:00 · 19.1 min · 1,164 recorded · 1,146 measured · Source: the US BTS 15:00 · 18.7 min · 754 recorded · 745 measured · Source: the US BTS 16:00 · 21.5 min · 510 recorded · 496 measured · Source: the US BTS 17:00 · 26.4 min · 1,240 recorded · 1,223 measured · Source: the US BTS 18:00 · 26.6 min · 341 recorded · 335 measured · Source: the US BTS 19:00 · 18.7 min · 1,363 recorded · 1,336 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 150 recorded · 140 measured · Source: the US BTS 21:00 · 31.2 min · 282 recorded · 274 measured · Source: the US BTS 22:00 · 29.5 min · 960 recorded · 930 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 31 recorded · 31 measured · Source: the US BTS

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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 · 305 · 305 recorded · 299 measured · Source: the US BTS 06:00 · 872 · 872 recorded · 850 measured · Source: the US BTS 07:00 · 1,107 · 1,107 recorded · 1,081 measured · Source: the US BTS 08:00 · 856 · 856 recorded · 849 measured · Source: the US BTS 09:00 · 978 · 978 recorded · 965 measured · Source: the US BTS 10:00 · 907 · 907 recorded · 885 measured · Source: the US BTS 11:00 · 224 · 224 recorded · 220 measured · Source: the US BTS 12:00 · 1,697 · 1,697 recorded · 1,678 measured · Source: the US BTS 13:00 · 273 · 273 recorded · 267 measured · Source: the US BTS 14:00 · 1,164 · 1,164 recorded · 1,146 measured · Source: the US BTS 15:00 · 754 · 754 recorded · 745 measured · Source: the US BTS 16:00 · 510 · 510 recorded · 496 measured · Source: the US BTS 17:00 · 1,240 · 1,240 recorded · 1,223 measured · Source: the US BTS 18:00 · 341 · 341 recorded · 335 measured · Source: the US BTS 19:00 · 1,363 · 1,363 recorded · 1,336 measured · Source: the US BTS 20:00 · 150 · 150 recorded · 140 measured · Source: the US BTS 21:00 · 282 · 282 recorded · 274 measured · Source: the US BTS 22:00 · 960 · 960 recorded · 930 measured · Source: the US BTS 23:00 · 31 · 31 recorded · 31 measured · Source: the US BTS

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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———
05:0089.0%9.3 min299305
06:0088.0%10.2 min850872
07:0083.8%12.4 min1,0811,107
08:0089.5%4.0 min849856
09:0087.5%5.3 min965978
10:0082.6%9.3 min885907
11:0078.2%13.0 min220224
12:0082.6%10.4 min1,6781,697
13:0077.2%15.7 min267273
14:0076.2%19.1 min1,1461,164
15:0074.4%18.7 min745754
16:0066.7%21.5 min496510
17:0070.6%26.4 min1,2231,240
18:0072.5%26.6 min335341
19:0073.6%18.7 min1,3361,363
20:00Fewer than 200 measured departures—140150
21:0059.5%31.2 min274282
22:0068.9%29.5 min930960
23:00Fewer than 200 measured departures—3131

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 76.2% · 2,137 recorded · 2,093 measured · Source: the US BTS Tuesday · 80.9% · 1,890 recorded · 1,866 measured · Source: the US BTS Wednesday · 81.5% · 1,877 recorded · 1,863 measured · Source: the US BTS Thursday · 80.0% · 2,106 recorded · 2,087 measured · Source: the US BTS Friday · 76.1% · 2,139 recorded · 2,089 measured · Source: the US BTS Saturday · 80.1% · 1,746 recorded · 1,706 measured · Source: the US BTS Sunday · 74.9% · 2,119 recorded · 2,046 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 17.8 min · 2,137 recorded · 2,093 measured · Source: the US BTS Tuesday · 13.0 min · 1,890 recorded · 1,866 measured · Source: the US BTS Wednesday · 13.9 min · 1,877 recorded · 1,863 measured · Source: the US BTS Thursday · 13.7 min · 2,106 recorded · 2,087 measured · Source: the US BTS Friday · 19.7 min · 2,139 recorded · 2,089 measured · Source: the US BTS Saturday · 15.2 min · 1,746 recorded · 1,706 measured · Source: the US BTS Sunday · 17.6 min · 2,119 recorded · 2,046 measured · Source: the US BTS

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Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 2,137 · 2,137 recorded · 2,093 measured · Source: the US BTS Tuesday · 1,890 · 1,890 recorded · 1,866 measured · Source: the US BTS Wednesday · 1,877 · 1,877 recorded · 1,863 measured · Source: the US BTS Thursday · 2,106 · 2,106 recorded · 2,087 measured · Source: the US BTS Friday · 2,139 · 2,139 recorded · 2,089 measured · Source: the US BTS Saturday · 1,746 · 1,746 recorded · 1,706 measured · Source: the US BTS Sunday · 2,119 · 2,119 recorded · 2,046 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday76.2%17.8 min2,0932,137
Tuesday80.9%13.0 min1,8661,890
Wednesday81.5%13.9 min1,8631,877
Thursday80.0%13.7 min2,0872,106
Friday76.1%19.7 min2,0892,139
Saturday80.1%15.2 min1,7061,746
Sunday74.9%17.6 min2,0462,119

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 · 76.6% · 1,105 recorded · 1,043 measured · Source: the US BTS Feb · 82.8% · 1,040 recorded · 1,029 measured · Source: the US BTS Mar · 78.6% · 1,243 recorded · 1,222 measured · Source: the US BTS Apr · 82.8% · 1,343 recorded · 1,329 measured · Source: the US BTS May · 76.3% · 1,509 recorded · 1,495 measured · Source: the US BTS Jun · 74.4% · 1,464 recorded · 1,427 measured · Source: the US BTS Jul · 67.4% · 1,438 recorded · 1,375 measured · Source: the US BTS Aug · 76.6% · 687 recorded · 683 measured · Source: the US BTS Sep · 85.2% · 630 recorded · 630 measured · Source: the US BTS Oct · 85.9% · 1,071 recorded · 1,067 measured · Source: the US BTS Nov · 85.3% · 1,226 recorded · 1,207 measured · Source: the US BTS Dec · 75.1% · 1,258 recorded · 1,243 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 17.4 min · 1,105 recorded · 1,043 measured · Source: the US BTS Feb · 8.5 min · 1,040 recorded · 1,029 measured · Source: the US BTS Mar · 16.8 min · 1,243 recorded · 1,222 measured · Source: the US BTS Apr · 8.8 min · 1,343 recorded · 1,329 measured · Source: the US BTS May · 17.5 min · 1,509 recorded · 1,495 measured · Source: the US BTS Jun · 20.6 min · 1,464 recorded · 1,427 measured · Source: the US BTS Jul · 33.0 min · 1,438 recorded · 1,375 measured · Source: the US BTS Aug · 21.4 min · 687 recorded · 683 measured · Source: the US BTS Sep · 9.3 min · 630 recorded · 630 measured · Source: the US BTS Oct · 7.4 min · 1,071 recorded · 1,067 measured · Source: the US BTS Nov · 9.2 min · 1,226 recorded · 1,207 measured · Source: the US BTS Dec · 15.8 min · 1,258 recorded · 1,243 measured · Source: the US BTS

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Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 1,105 · 1,105 recorded · 1,043 measured · Source: the US BTS Feb · 1,040 · 1,040 recorded · 1,029 measured · Source: the US BTS Mar · 1,243 · 1,243 recorded · 1,222 measured · Source: the US BTS Apr · 1,343 · 1,343 recorded · 1,329 measured · Source: the US BTS May · 1,509 · 1,509 recorded · 1,495 measured · Source: the US BTS Jun · 1,464 · 1,464 recorded · 1,427 measured · Source: the US BTS Jul · 1,438 · 1,438 recorded · 1,375 measured · Source: the US BTS Aug · 687 · 687 recorded · 683 measured · Source: the US BTS Sep · 630 · 630 recorded · 630 measured · Source: the US BTS Oct · 1,071 · 1,071 recorded · 1,067 measured · Source: the US BTS Nov · 1,226 · 1,226 recorded · 1,207 measured · Source: the US BTS Dec · 1,258 · 1,258 recorded · 1,243 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan76.6%17.4 min1,0431,105
Feb82.8%8.5 min1,0291,040
Mar78.6%16.8 min1,2221,243
Apr82.8%8.8 min1,3291,343
May76.3%17.5 min1,4951,509
Jun74.4%20.6 min1,4271,464
Jul67.4%33.0 min1,3751,438
Aug76.6%21.4 min683687
Sep85.2%9.3 min630630
Oct85.9%7.4 min1,0671,071
Nov85.3%9.2 min1,2071,226
Dec75.1%15.8 min1,2431,258

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 76.9% 10,781
  • Delayed >15 min 21.2% 2,969
  • Cancelled 1.9% 264
  • 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

56
56 of 56
Flight numbersBy direction DeparturesOn time
DL1695 ATL → IAD 635 74.6%
DL2549 ATL → IAD 620 75.0%
DL1695 IAD → ATL 599 64.6%
UA632 ATL → IAD 589 90.7%
UA2634 ATL → IAD 585 76.6%
DL1354 IAD → ATL 561 81.8%
F994707 IAD → ATL 528 80.9%
UA2081 IAD → ATL 518 75.2%
UA1831 ATL → IAD 506 77.9%
DL1309 ATL → IAD 494 77.5%
DL1444 IAD → ATL 426 87.3%
DL1444 ATL → IAD 422 89.6%
DL2902 ATL → IAD 368 76.8%
F994708 ATL → IAD 352 67.2%
F991082 ATL → IAD 328 55.4%
DL2550 IAD → ATL 320 86.9%
F991081 IAD → ATL 320 64.2%
UA471 IAD → ATL 307 85.3%
UA2739 IAD → ATL 285 92.6%
DL1482 IAD → ATL 277 74.8%
DL2127 IAD → ATL 268 91.2%
DL2902 IAD → ATL 256 68.4%
DL1400 ATL → IAD 253 77.3%
UA1940 IAD → ATL 245 89.2%
DL2974 IAD → ATL 220 78.0%
DL1324 IAD → ATL 207 82.8%
UA2642 IAD → ATL 200 88.4%
DL1687 ATL → IAD 194 66.3%
DL2974 ATL → IAD 192 79.9%
F993692 ATL → IAD 190 49.5%
DL1482 ATL → IAD 186 76.8%
DL1324 ATL → IAD 169 87.7%
DL1400 IAD → ATL 162 75.8%
DL1751 IAD → ATL 154 82.4%
DL1751 ATL → IAD 154 86.3%
UA1635 IAD → ATL 151 79.1%
UA562 ATL → IAD 145 83.9%
DL2135 ATL → IAD 114 84.2%
DL2135 IAD → ATL 114 79.0%
UA641 ATL → IAD 104 93.2%
DL1687 IAD → ATL 100 57.6%
F994410 ATL → IAD 93 71.4%
F993691 IAD → ATL 76 53.4%
DL719 ATL → IAD 68 91.2%
DL719 IAD → ATL 68 88.2%
UA267 ATL → IAD 68 98.5%
DL3080 IAD → ATL 66 84.6%
UA659 IAD → ATL 51 94.0%
DL2751 ATL → IAD 41 66.7%
DL2751 IAD → ATL 41 66.7%
UA222 IAD → ATL 39 94.9%
UA2677 IAD → ATL 38 63.2%
F994409 IAD → ATL 36 68.8%
UA1663 IAD → ATL 36 94.4%
UA1286 IAD → ATL 32 90.6%
DL1301 IAD → ATL 30 86.7%

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 698 +3.1% 34 68.9%
June 2026 750 +10.8% 12 79.1%
May 2026 800 +15.1% 11 80.9%
April 2026 700 +11.3% 8 86.4%
March 2026 594 −5.4% 17 77.6%
February 2026 513 −0.6% 11 84.6%
January 2026 527 +2.1% 35 79.1%
December 2025 627 +1.8% 15 70.3%
November 2025 627 +8.1% 17 81.5%
October 2025 666 +66.1% 2 83.5%
September 2025 630 0 85.2%
August 2025 683 4 76.6%
July 2025 677 29 65.9%
June 2025 677 25 69.3%
May 2025 695 3 71.1%
April 2025 629 6 78.7%
March 2025 628 4 79.5%
February 2025 516 0 81.0%
January 2025 516 27 74.0%
December 2024 616 0 80.0%
November 2024 580 2 89.3%
October 2024 401 2 90.0%

How to read this chart

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