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1,108 km · Domestic

Hartsfield Jackson Atlanta (ATL) – George Bush Intercontinental (IAH)

In July 2026, 834 flights operated between Hartsfield Jackson Atlanta and George Bush Intercontinental (both directions), and 68.7% 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 periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January595755▲ 26.9%
February631762▲ 20.8%
March730821▲ 12.5%
April679931▲ 37.1%
May785886▲ 12.9%
June755778▲ 3.0%
July812834▲ 2.7%
August750––
September766––
October874–in progress
November785––
December714––
Year to date (Jan–Jul)4,9875,767▲ 15.6%

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
January77.8%79.2%▲ 1.8%
February82.6%83.7%▲ 1.3%
March80.1%70.8%▼ 11.6%
April79.5%81.6%▲ 2.6%
May70.3%72.3%▲ 2.8%
June64.1%73.4%▲ 14.5%
July69.5%68.7%▼ 1.2%
August78.1%––
September88.9%––
October81.5%–in progress
November81.0%––
December74.8%––
Year-to-date average (Jan–Jul)74.8%75.7%▲ 1.1%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January5134▼ 33.3%
February03–
March158▲ 5,700.0%
April74▼ 42.9%
May64▼ 33.3%
June2514▼ 44.0%
July1518▲ 20.0%
August9––
September2––
October3–in progress
November18––
December22––
Year to date (Jan–Jul)105135▲ 28.6%

Airlines on this route

  1. Delta Air Lines 51.3%
  2. United Airlines 23.0%
  3. Frontier Airlines 14.4%
  4. Spirit Airlines 10.2%
  5. SkyWest Airlines 1.1%

Oct 1, 2024 – Jul 31, 2026

By direction

ATL → IAH

Scheduled flights
8,514
Flights operated
8,366
Cancelled
148 · 1.7%
On-time departures
75.8%

IAH → ATL

Scheduled flights
8,509
Flights operated
8,355
Cancelled
154 · 1.8%
On-time departures
78.6%

ATL → IAH and IAH → ATL counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Delta Air Lines DL 8,739 51.3% 78.1% 161
United Airlines UA 3,921 23.0% 83.4% 40
Frontier Airlines F9 2,445 14.4% 66.9% 53
Spirit Airlines NK 1,738 10.2% 71.8% 48
SkyWest Airlines OO 180 1.1% 89.4% 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 delay07:00–08:005.0min · 2,411 recorded · 2,378 measured
Gap to highest-delay hour39.3min07:00 ↔ 21:00
Recorded flights17,023ATL–IAH

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 · 90.2% · 603 recorded · 579 measured · Source: the US BTS 06:00 · 85.1% · 949 recorded · 928 measured · Source: the US BTS 07:00 · 90.2% · 2,411 recorded · 2,378 measured · Source: the US BTS 08:00 · 84.7% · 458 recorded · 451 measured · Source: the US BTS 09:00 · 82.1% · 1,292 recorded · 1,254 measured · Source: the US BTS 10:00 · 76.2% · 356 recorded · 349 measured · Source: the US BTS 11:00 · 83.5% · 1,341 recorded · 1,323 measured · Source: the US BTS 12:00 · 77.9% · 940 recorded · 934 measured · Source: the US BTS 13:00 · 79.1% · 632 recorded · 627 measured · Source: the US BTS 14:00 · 73.8% · 1,272 recorded · 1,261 measured · Source: the US BTS 15:00 · 73.2% · 955 recorded · 946 measured · Source: the US BTS 16:00 · 66.1% · 991 recorded · 974 measured · Source: the US BTS 17:00 · 71.7% · 802 recorded · 791 measured · Source: the US BTS 18:00 · 68.2% · 1,451 recorded · 1,426 measured · Source: the US BTS 19:00 · 70.8% · 793 recorded · 770 measured · Source: the US BTS 20:00 · 66.2% · 623 recorded · 612 measured · Source: the US BTS 21:00 · 48.1% · 467 recorded · 453 measured · Source: the US BTS 22:00 · 70.7% · 684 recorded · 662 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 3 recorded · 3 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 · 5.1 min · 603 recorded · 579 measured · Source: the US BTS 06:00 · 8.9 min · 949 recorded · 928 measured · Source: the US BTS 07:00 · 5.0 min · 2,411 recorded · 2,378 measured · Source: the US BTS 08:00 · 8.0 min · 458 recorded · 451 measured · Source: the US BTS 09:00 · 8.9 min · 1,292 recorded · 1,254 measured · Source: the US BTS 10:00 · 14.1 min · 356 recorded · 349 measured · Source: the US BTS 11:00 · 8.1 min · 1,341 recorded · 1,323 measured · Source: the US BTS 12:00 · 16.8 min · 940 recorded · 934 measured · Source: the US BTS 13:00 · 14.1 min · 632 recorded · 627 measured · Source: the US BTS 14:00 · 19.0 min · 1,272 recorded · 1,261 measured · Source: the US BTS 15:00 · 17.4 min · 955 recorded · 946 measured · Source: the US BTS 16:00 · 22.3 min · 991 recorded · 974 measured · Source: the US BTS 17:00 · 23.0 min · 802 recorded · 791 measured · Source: the US BTS 18:00 · 23.2 min · 1,451 recorded · 1,426 measured · Source: the US BTS 19:00 · 20.6 min · 793 recorded · 770 measured · Source: the US BTS 20:00 · 26.5 min · 623 recorded · 612 measured · Source: the US BTS 21:00 · 44.3 min · 467 recorded · 453 measured · Source: the US BTS 22:00 · 16.6 min · 684 recorded · 662 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 3 recorded · 3 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 · 603 · 603 recorded · 579 measured · Source: the US BTS 06:00 · 949 · 949 recorded · 928 measured · Source: the US BTS 07:00 · 2,411 · 2,411 recorded · 2,378 measured · Source: the US BTS 08:00 · 458 · 458 recorded · 451 measured · Source: the US BTS 09:00 · 1,292 · 1,292 recorded · 1,254 measured · Source: the US BTS 10:00 · 356 · 356 recorded · 349 measured · Source: the US BTS 11:00 · 1,341 · 1,341 recorded · 1,323 measured · Source: the US BTS 12:00 · 940 · 940 recorded · 934 measured · Source: the US BTS 13:00 · 632 · 632 recorded · 627 measured · Source: the US BTS 14:00 · 1,272 · 1,272 recorded · 1,261 measured · Source: the US BTS 15:00 · 955 · 955 recorded · 946 measured · Source: the US BTS 16:00 · 991 · 991 recorded · 974 measured · Source: the US BTS 17:00 · 802 · 802 recorded · 791 measured · Source: the US BTS 18:00 · 1,451 · 1,451 recorded · 1,426 measured · Source: the US BTS 19:00 · 793 · 793 recorded · 770 measured · Source: the US BTS 20:00 · 623 · 623 recorded · 612 measured · Source: the US BTS 21:00 · 467 · 467 recorded · 453 measured · Source: the US BTS 22:00 · 684 · 684 recorded · 662 measured · Source: the US BTS 23:00 · 3 · 3 recorded · 3 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———
05:0090.2%5.1 min579603
06:0085.1%8.9 min928949
07:0090.2%5.0 min2,3782,411
08:0084.7%8.0 min451458
09:0082.1%8.9 min1,2541,292
10:0076.2%14.1 min349356
11:0083.5%8.1 min1,3231,341
12:0077.9%16.8 min934940
13:0079.1%14.1 min627632
14:0073.8%19.0 min1,2611,272
15:0073.2%17.4 min946955
16:0066.1%22.3 min974991
17:0071.7%23.0 min791802
18:0068.2%23.2 min1,4261,451
19:0070.8%20.6 min770793
20:0066.2%26.5 min612623
21:0048.1%44.3 min453467
22:0070.7%16.6 min662684
23:00Fewer than 200 measured departures—33

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 74.0% · 2,626 recorded · 2,582 measured · Source: the US BTS Tuesday · 81.1% · 2,245 recorded · 2,207 measured · Source: the US BTS Wednesday · 82.2% · 2,308 recorded · 2,288 measured · Source: the US BTS Thursday · 77.5% · 2,572 recorded · 2,552 measured · Source: the US BTS Friday · 77.9% · 2,598 recorded · 2,533 measured · Source: the US BTS Saturday · 76.9% · 2,191 recorded · 2,142 measured · Source: the US BTS Sunday · 71.7% · 2,483 recorded · 2,417 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 · 19.3 min · 2,626 recorded · 2,582 measured · Source: the US BTS Tuesday · 11.0 min · 2,245 recorded · 2,207 measured · Source: the US BTS Wednesday · 10.8 min · 2,308 recorded · 2,288 measured · Source: the US BTS Thursday · 15.4 min · 2,572 recorded · 2,552 measured · Source: the US BTS Friday · 15.6 min · 2,598 recorded · 2,533 measured · Source: the US BTS Saturday · 13.3 min · 2,191 recorded · 2,142 measured · Source: the US BTS Sunday · 20.0 min · 2,483 recorded · 2,417 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 · 2,626 · 2,626 recorded · 2,582 measured · Source: the US BTS Tuesday · 2,245 · 2,245 recorded · 2,207 measured · Source: the US BTS Wednesday · 2,308 · 2,308 recorded · 2,288 measured · Source: the US BTS Thursday · 2,572 · 2,572 recorded · 2,552 measured · Source: the US BTS Friday · 2,598 · 2,598 recorded · 2,533 measured · Source: the US BTS Saturday · 2,191 · 2,191 recorded · 2,142 measured · Source: the US BTS Sunday · 2,483 · 2,483 recorded · 2,417 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday74.0%19.3 min2,5822,626
Tuesday81.1%11.0 min2,2072,245
Wednesday82.2%10.8 min2,2882,308
Thursday77.5%15.4 min2,5522,572
Friday77.9%15.6 min2,5332,598
Saturday76.9%13.3 min2,1422,191
Sunday71.7%20.0 min2,4172,483

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 · 78.6% · 1,435 recorded · 1,350 measured · Source: the US BTS Feb · 83.2% · 1,396 recorded · 1,393 measured · Source: the US BTS Mar · 75.2% · 1,610 recorded · 1,551 measured · Source: the US BTS Apr · 80.8% · 1,621 recorded · 1,610 measured · Source: the US BTS May · 71.4% · 1,681 recorded · 1,671 measured · Source: the US BTS Jun · 68.8% · 1,572 recorded · 1,533 measured · Source: the US BTS Jul · 69.1% · 1,679 recorded · 1,646 measured · Source: the US BTS Aug · 78.1% · 759 recorded · 750 measured · Source: the US BTS Sep · 88.9% · 768 recorded · 766 measured · Source: the US BTS Oct · 83.8% · 1,413 recorded · 1,410 measured · Source: the US BTS Nov · 82.9% · 1,604 recorded · 1,582 measured · Source: the US BTS Dec · 74.0% · 1,485 recorded · 1,459 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 · 15.8 min · 1,435 recorded · 1,350 measured · Source: the US BTS Feb · 8.6 min · 1,396 recorded · 1,393 measured · Source: the US BTS Mar · 15.7 min · 1,610 recorded · 1,551 measured · Source: the US BTS Apr · 13.4 min · 1,621 recorded · 1,610 measured · Source: the US BTS May · 20.6 min · 1,681 recorded · 1,671 measured · Source: the US BTS Jun · 25.7 min · 1,572 recorded · 1,533 measured · Source: the US BTS Jul · 21.9 min · 1,679 recorded · 1,646 measured · Source: the US BTS Aug · 14.3 min · 759 recorded · 750 measured · Source: the US BTS Sep · 3.8 min · 768 recorded · 766 measured · Source: the US BTS Oct · 9.2 min · 1,413 recorded · 1,410 measured · Source: the US BTS Nov · 9.6 min · 1,604 recorded · 1,582 measured · Source: the US BTS Dec · 16.3 min · 1,485 recorded · 1,459 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 · 1,435 · 1,435 recorded · 1,350 measured · Source: the US BTS Feb · 1,396 · 1,396 recorded · 1,393 measured · Source: the US BTS Mar · 1,610 · 1,610 recorded · 1,551 measured · Source: the US BTS Apr · 1,621 · 1,621 recorded · 1,610 measured · Source: the US BTS May · 1,681 · 1,681 recorded · 1,671 measured · Source: the US BTS Jun · 1,572 · 1,572 recorded · 1,533 measured · Source: the US BTS Jul · 1,679 · 1,679 recorded · 1,646 measured · Source: the US BTS Aug · 759 · 759 recorded · 750 measured · Source: the US BTS Sep · 768 · 768 recorded · 766 measured · Source: the US BTS Oct · 1,413 · 1,413 recorded · 1,410 measured · Source: the US BTS Nov · 1,604 · 1,604 recorded · 1,582 measured · Source: the US BTS Dec · 1,485 · 1,485 recorded · 1,459 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan78.6%15.8 min1,3501,435
Feb83.2%8.6 min1,3931,396
Mar75.2%15.7 min1,5511,610
Apr80.8%13.4 min1,6101,621
May71.4%20.6 min1,6711,681
Jun68.8%25.7 min1,5331,572
Jul69.1%21.9 min1,6461,679
Aug78.1%14.3 min750759
Sep88.9%3.8 min766768
Oct83.8%9.2 min1,4101,413
Nov82.9%9.6 min1,5821,604
Dec74.0%16.3 min1,4591,485

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 75.8% 12,909
  • Delayed >15 min 22.4% 3,812
  • Cancelled 1.8% 302
  • 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

108
108 of 108
Flight numbersBy direction DeparturesOn time
DL1069 IAH → ATL 658 93.0%
DL1601 ATL → IAH 658 71.8%
DL1315 IAH → ATL 657 88.7%
DL1284 ATL → IAH 628 69.3%
DL1585 ATL → IAH 613 91.6%
DL1682 IAH → ATL 593 73.0%
DL1682 ATL → IAH 589 82.0%
DL1585 IAH → ATL 560 77.9%
F991404 IAH → ATL 525 84.9%
F991403 ATL → IAH 502 69.8%
DL1572 IAH → ATL 490 75.4%
DL1572 ATL → IAH 467 80.7%
F992400 IAH → ATL 455 60.9%
F994075 ATL → IAH 432 50.2%
DL1223 ATL → IAH 395 76.3%
DL1223 IAH → ATL 369 70.6%
DL1131 ATL → IAH 314 68.9%
F992399 ATL → IAH 285 69.5%
DL2709 IAH → ATL 263 80.5%
DL2709 ATL → IAH 231 81.3%
UA462 IAH → ATL 229 79.3%
UA1030 IAH → ATL 227 92.5%
UA1962 IAH → ATL 224 92.9%
UA222 ATL → IAH 214 88.7%
UA532 ATL → IAH 206 94.2%
DL2113 IAH → ATL 189 62.5%
DL2113 ATL → IAH 187 69.0%
UA470 ATL → IAH 176 78.7%
F994076 IAH → ATL 158 64.7%
UA425 ATL → IAH 157 87.9%
DL1131 IAH → ATL 151 67.4%
DL2890 ATL → IAH 148 73.0%
UA1057 ATL → IAH 138 92.0%
UA1746 IAH → ATL 136 83.7%
UA2616 IAH → ATL 130 90.8%
UA287 ATL → IAH 113 90.3%
UA2162 IAH → ATL 89 75.3%
UA521 ATL → IAH 88 78.4%
NK1154 IAH → ATL 85 77.5%
NK1155 ATL → IAH 85 48.0%
F994106 IAH → ATL 84 50.7%
DL2890 IAH → ATL 80 57.5%
UA759 ATL → IAH 77 90.5%
NK966 IAH → ATL 74 67.6%
NK967 ATL → IAH 73 65.8%
UA1359 ATL → IAH 66 78.5%
NK2173 ATL → IAH 63 43.3%
NK2571 IAH → ATL 63 85.7%
NK455 IAH → ATL 63 82.5%
UA1591 IAH → ATL 63 79.4%
DL1186 IAH → ATL 62 76.7%
NK2170 IAH → ATL 62 82.0%
NK2574 ATL → IAH 62 66.1%
NK3246 IAH → ATL 59 88.1%
NK3247 ATL → IAH 59 70.7%
UA1211 IAH → ATL 59 59.3%
NK2168 IAH → ATL 56 69.1%
NK2169 ATL → IAH 56 40.0%
NK452 ATL → IAH 56 80.4%
NK691 ATL → IAH 55 60.0%
UA1712 IAH → ATL 51 87.8%
NK2070 ATL → IAH 50 65.3%
NK2071 IAH → ATL 49 61.2%
NK676 IAH → ATL 48 91.7%
UA2376 ATL → IAH 47 57.5%
UA693 ATL → IAH 47 84.8%
DL644 IAH → ATL 46 88.9%
NK512 ATL → IAH 46 72.1%
NK513 IAH → ATL 46 93.0%
OO4715 ATL → IAH 44 93.2%
NK2978 IAH → ATL 41 80.0%
UA1195 ATL → IAH 41 95.1%
UA1475 ATL → IAH 41 61.5%
NK2979 ATL → IAH 40 89.7%
NK3155 IAH → ATL 39 94.9%
NK3156 ATL → IAH 38 71.1%
DL1179 IAH → ATL 37 81.1%
UA1486 IAH → ATL 37 91.9%
UA2050 IAH → ATL 37 56.8%
UA217 ATL → IAH 37 80.6%
UA773 IAH → ATL 37 91.7%
UA2675 ATL → IAH 36 91.4%
DL1156 IAH → ATL 35 94.3%
NK1465 ATL → IAH 35 44.1%
NK240 ATL → IAH 35 76.5%
UA1718 IAH → ATL 35 85.7%
UA2110 IAH → ATL 35 57.1%
UA2241 IAH → ATL 35 67.7%
UA2355 ATL → IAH 35 90.9%
UA283 IAH → ATL 35 57.6%
NK1466 IAH → ATL 34 88.2%
DL1719 IAH → ATL 33 84.9%
UA1238 IAH → ATL 32 75.0%
UA2218 IAH → ATL 32 87.5%
UA2322 IAH → ATL 32 78.1%
UA2659 IAH → ATL 32 76.7%
DL1148 ATL → IAH 31 80.7%
DL1148 IAH → ATL 31 64.5%
DL1651 IAH → ATL 31 35.5%
DL1988 ATL → IAH 31 76.7%
NK1906 IAH → ATL 31 70.0%
NK1907 ATL → IAH 31 90.0%
OO4656 IAH → ATL 31 87.1%
UA1067 ATL → IAH 31 93.1%
UA1620 ATL → IAH 31 96.8%
UA1936 IAH → ATL 31 87.1%
UA2041 IAH → ATL 31 96.8%
UA492 IAH → ATL 31 87.1%

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 834 +2.7% 18 68.7%
June 2026 778 +3.0% 14 73.4%
May 2026 886 +12.9% 4 72.3%
April 2026 931 +37.1% 4 81.6%
March 2026 821 +12.5% 58 70.8%
February 2026 762 +20.8% 3 83.7%
January 2026 755 +26.9% 34 79.2%
December 2025 714 −4.2% 22 74.8%
November 2025 785 −1.5% 18 81.0%
October 2025 874 +63.1% 3 81.5%
September 2025 766 2 88.9%
August 2025 750 9 78.1%
July 2025 812 15 69.5%
June 2025 755 25 64.1%
May 2025 785 6 70.3%
April 2025 679 7 79.5%
March 2025 730 1 80.1%
February 2025 631 0 82.6%
January 2025 595 51 77.8%
December 2024 745 4 73.2%
November 2024 797 4 84.7%
October 2024 536 0 87.5%

How to read this chart

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