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1,942 km · Domestic

Ronald Reagan Washington National (DCA) – George Bush Intercontinental (IAH)

In July 2026, 545 flights operated between Ronald Reagan Washington National and George Bush Intercontinental (both directions), and 70.8% 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
January317527▲ 66.2%
February347506▲ 45.8%
March392558▲ 42.3%
April404565▲ 39.9%
May407572▲ 40.5%
June379545▲ 43.8%
July404545▲ 34.9%
August411––
September544––
October582–in progress
November524––
December543––
Year to date (Jan–Jul)2,6503,818▲ 44.1%

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
January85.8%84.6%▼ 1.4%
February72.3%84.0%▲ 16.2%
March86.2%79.2%▼ 8.1%
April85.9%81.9%▼ 4.7%
May79.6%76.0%▼ 4.5%
June70.2%69.4%▼ 1.1%
July72.0%70.8%▼ 1.7%
August75.4%––
September86.4%––
October83.5%–in progress
November81.1%––
December83.4%––
Year-to-date average (Jan–Jul)78.9%78.0%▼ 1.1%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January3637▲ 2.8%
February511▲ 120.0%
March020–
April00–
May45▲ 25.0%
June815▲ 87.5%
July1023▲ 130.0%
August3––
September0––
October0–in progress
November16––
December4––
Year to date (Jan–Jul)63111▲ 76.2%

Airlines on this route

  1. United Airlines 83.0%
  2. Republic Airways 10.0%
  3. PSA Airlines 7.0%

Oct 1, 2024 – Jul 31, 2026

By direction

DCA → IAH

Scheduled flights
5,127
Flights operated
5,025
Cancelled
102 · 2.0%
On-time departures
83.6%

IAH → DCA

Scheduled flights
5,129
Flights operated
5,033
Cancelled
96 · 1.9%
On-time departures
76.8%

DCA → IAH and IAH → DCA counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 8,512 83.0% 80.9% 101
Republic Airways YX 1,024 10.0% 80.7% 51
PSA Airlines OH 720 7.0% 70.3% 46

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 delay07:00–08:001.4min · 743 recorded · 731 measured
Gap to highest-delay hour26.3min07:00 ↔ 17:00
Recorded flights10,256DCA–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 · Fewer than 200 measured departures · 15 recorded · 13 measured · Source: the US BTS 06:00 · 92.4% · 1,080 recorded · 1,051 measured · Source: the US BTS 07:00 · 92.3% · 743 recorded · 731 measured · Source: the US BTS 08:00 · 93.4% · 668 recorded · 651 measured · Source: the US BTS 09:00 · 84.6% · 692 recorded · 680 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 162 recorded · 157 measured · Source: the US BTS 11:00 · 86.4% · 952 recorded · 939 measured · Source: the US BTS 12:00 · 87.3% · 950 recorded · 944 measured · Source: the US BTS 13:00 · 70.6% · 243 recorded · 231 measured · Source: the US BTS 14:00 · 78.0% · 1,103 recorded · 1,095 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 24 recorded · 24 measured · Source: the US BTS 16:00 · 67.7% · 1,310 recorded · 1,289 measured · Source: the US BTS 17:00 · 60.5% · 234 recorded · 220 measured · Source: the US BTS 18:00 · 64.5% · 642 recorded · 634 measured · Source: the US BTS 19:00 · 70.9% · 1,244 recorded · 1,217 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 194 recorded · 182 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 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 · Fewer than 200 measured departures · 15 recorded · 13 measured · Source: the US BTS 06:00 · 2.8 min · 1,080 recorded · 1,051 measured · Source: the US BTS 07:00 · 1.4 min · 743 recorded · 731 measured · Source: the US BTS 08:00 · 2.2 min · 668 recorded · 651 measured · Source: the US BTS 09:00 · 8.0 min · 692 recorded · 680 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 162 recorded · 157 measured · Source: the US BTS 11:00 · 7.5 min · 952 recorded · 939 measured · Source: the US BTS 12:00 · 7.7 min · 950 recorded · 944 measured · Source: the US BTS 13:00 · 15.7 min · 243 recorded · 231 measured · Source: the US BTS 14:00 · 16.3 min · 1,103 recorded · 1,095 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 24 recorded · 24 measured · Source: the US BTS 16:00 · 27.6 min · 1,310 recorded · 1,289 measured · Source: the US BTS 17:00 · 27.7 min · 234 recorded · 220 measured · Source: the US BTS 18:00 · 23.4 min · 642 recorded · 634 measured · Source: the US BTS 19:00 · 22.3 min · 1,244 recorded · 1,217 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 194 recorded · 182 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 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 · 15 · 15 recorded · 13 measured · Source: the US BTS 06:00 · 1,080 · 1,080 recorded · 1,051 measured · Source: the US BTS 07:00 · 743 · 743 recorded · 731 measured · Source: the US BTS 08:00 · 668 · 668 recorded · 651 measured · Source: the US BTS 09:00 · 692 · 692 recorded · 680 measured · Source: the US BTS 10:00 · 162 · 162 recorded · 157 measured · Source: the US BTS 11:00 · 952 · 952 recorded · 939 measured · Source: the US BTS 12:00 · 950 · 950 recorded · 944 measured · Source: the US BTS 13:00 · 243 · 243 recorded · 231 measured · Source: the US BTS 14:00 · 1,103 · 1,103 recorded · 1,095 measured · Source: the US BTS 15:00 · 24 · 24 recorded · 24 measured · Source: the US BTS 16:00 · 1,310 · 1,310 recorded · 1,289 measured · Source: the US BTS 17:00 · 234 · 234 recorded · 220 measured · Source: the US BTS 18:00 · 642 · 642 recorded · 634 measured · Source: the US BTS 19:00 · 1,244 · 1,244 recorded · 1,217 measured · Source: the US BTS 20:00 · 194 · 194 recorded · 182 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 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———
05:00Fewer than 200 measured departures—1315
06:0092.4%2.8 min1,0511,080
07:0092.3%1.4 min731743
08:0093.4%2.2 min651668
09:0084.6%8.0 min680692
10:00Fewer than 200 measured departures—157162
11:0086.4%7.5 min939952
12:0087.3%7.7 min944950
13:0070.6%15.7 min231243
14:0078.0%16.3 min1,0951,103
15:00Fewer than 200 measured departures—2424
16:0067.7%27.6 min1,2891,310
17:0060.5%27.7 min220234
18:0064.5%23.4 min634642
19:0070.9%22.3 min1,2171,244
20:00Fewer than 200 measured departures—182194
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 78.8% · 1,564 recorded · 1,521 measured · Source: the US BTS Tuesday · 83.2% · 1,560 recorded · 1,514 measured · Source: the US BTS Wednesday · 81.3% · 1,556 recorded · 1,536 measured · Source: the US BTS Thursday · 78.9% · 1,540 recorded · 1,527 measured · Source: the US BTS Friday · 78.6% · 1,539 recorded · 1,520 measured · Source: the US BTS Saturday · 83.6% · 1,008 recorded · 995 measured · Source: the US BTS Sunday · 77.9% · 1,489 recorded · 1,445 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 · 15.8 min · 1,564 recorded · 1,521 measured · Source: the US BTS Tuesday · 11.0 min · 1,560 recorded · 1,514 measured · Source: the US BTS Wednesday · 9.7 min · 1,556 recorded · 1,536 measured · Source: the US BTS Thursday · 14.2 min · 1,540 recorded · 1,527 measured · Source: the US BTS Friday · 17.3 min · 1,539 recorded · 1,520 measured · Source: the US BTS Saturday · 9.2 min · 1,008 recorded · 995 measured · Source: the US BTS Sunday · 14.9 min · 1,489 recorded · 1,445 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 · 1,564 · 1,564 recorded · 1,521 measured · Source: the US BTS Tuesday · 1,560 · 1,560 recorded · 1,514 measured · Source: the US BTS Wednesday · 1,556 · 1,556 recorded · 1,536 measured · Source: the US BTS Thursday · 1,540 · 1,540 recorded · 1,527 measured · Source: the US BTS Friday · 1,539 · 1,539 recorded · 1,520 measured · Source: the US BTS Saturday · 1,008 · 1,008 recorded · 995 measured · Source: the US BTS Sunday · 1,489 · 1,489 recorded · 1,445 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday78.8%15.8 min1,5211,564
Tuesday83.2%11.0 min1,5141,560
Wednesday81.3%9.7 min1,5361,556
Thursday78.9%14.2 min1,5271,540
Friday78.6%17.3 min1,5201,539
Saturday83.6%9.2 min9951,008
Sunday77.9%14.9 min1,4451,489

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 · 85.1% · 917 recorded · 844 measured · Source: the US BTS Feb · 79.3% · 869 recorded · 853 measured · Source: the US BTS Mar · 82.1% · 970 recorded · 950 measured · Source: the US BTS Apr · 83.6% · 969 recorded · 969 measured · Source: the US BTS May · 77.5% · 988 recorded · 979 measured · Source: the US BTS Jun · 69.7% · 947 recorded · 924 measured · Source: the US BTS Jul · 71.3% · 982 recorded · 949 measured · Source: the US BTS Aug · 75.4% · 414 recorded · 411 measured · Source: the US BTS Sep · 86.4% · 544 recorded · 544 measured · Source: the US BTS Oct · 85.7% · 818 recorded · 817 measured · Source: the US BTS Nov · 84.1% · 932 recorded · 916 measured · Source: the US BTS Dec · 83.2% · 906 recorded · 902 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 · 10.8 min · 917 recorded · 844 measured · Source: the US BTS Feb · 10.2 min · 869 recorded · 853 measured · Source: the US BTS Mar · 16.1 min · 970 recorded · 950 measured · Source: the US BTS Apr · 7.7 min · 969 recorded · 969 measured · Source: the US BTS May · 14.3 min · 988 recorded · 979 measured · Source: the US BTS Jun · 28.6 min · 947 recorded · 924 measured · Source: the US BTS Jul · 26.6 min · 982 recorded · 949 measured · Source: the US BTS Aug · 14.8 min · 414 recorded · 411 measured · Source: the US BTS Sep · 3.5 min · 544 recorded · 544 measured · Source: the US BTS Oct · 4.3 min · 818 recorded · 817 measured · Source: the US BTS Nov · 7.4 min · 932 recorded · 916 measured · Source: the US BTS Dec · 10.6 min · 906 recorded · 902 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 · 917 · 917 recorded · 844 measured · Source: the US BTS Feb · 869 · 869 recorded · 853 measured · Source: the US BTS Mar · 970 · 970 recorded · 950 measured · Source: the US BTS Apr · 969 · 969 recorded · 969 measured · Source: the US BTS May · 988 · 988 recorded · 979 measured · Source: the US BTS Jun · 947 · 947 recorded · 924 measured · Source: the US BTS Jul · 982 · 982 recorded · 949 measured · Source: the US BTS Aug · 414 · 414 recorded · 411 measured · Source: the US BTS Sep · 544 · 544 recorded · 544 measured · Source: the US BTS Oct · 818 · 818 recorded · 817 measured · Source: the US BTS Nov · 932 · 932 recorded · 916 measured · Source: the US BTS Dec · 906 · 906 recorded · 902 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan85.1%10.8 min844917
Feb79.3%10.2 min853869
Mar82.1%16.1 min950970
Apr83.6%7.7 min969969
May77.5%14.3 min979988
Jun69.7%28.6 min924947
Jul71.3%26.6 min949982
Aug75.4%14.8 min411414
Sep86.4%3.5 min544544
Oct85.7%4.3 min817818
Nov84.1%7.4 min916932
Dec83.2%10.6 min902906

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 78.6% 8,064
  • Delayed >15 min 19.4% 1,994
  • Cancelled 1.9% 198
  • 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

82
82 of 82
Flight numbersBy direction DeparturesOn time
UA697 DCA → IAH 601 94.5%
UA2224 IAH → DCA 578 67.2%
UA1627 IAH → DCA 561 62.3%
UA382 DCA → IAH 552 89.2%
UA1450 DCA → IAH 533 95.8%
UA654 IAH → DCA 525 80.0%
UA2311 IAH → DCA 427 85.7%
UA1381 DCA → IAH 410 79.6%
UA2472 IAH → DCA 319 75.9%
UA512 IAH → DCA 295 92.5%
UA1785 DCA → IAH 292 63.8%
UA1457 DCA → IAH 289 95.4%
UA1540 IAH → DCA 207 76.7%
UA2190 DCA → IAH 168 88.0%
UA625 IAH → DCA 127 72.2%
YX4779 DCA → IAH 120 76.7%
YX4790 IAH → DCA 118 91.4%
UA1077 DCA → IAH 108 86.8%
UA1678 DCA → IAH 107 68.9%
YX4766 IAH → DCA 84 93.6%
YX4694 DCA → IAH 83 74.7%
UA1915 IAH → DCA 74 61.4%
UA2218 IAH → DCA 74 71.6%
OH5247 IAH → DCA 71 90.9%
UA2313 DCA → IAH 67 82.1%
UA1143 DCA → IAH 58 94.8%
UA1181 IAH → DCA 55 74.6%
UA2306 DCA → IAH 55 85.2%
UA2080 IAH → DCA 52 90.4%
UA2606 DCA → IAH 51 96.1%
YX4743 IAH → DCA 50 78.3%
YX4743 DCA → IAH 50 95.7%
UA1282 IAH → DCA 49 77.1%
UA1807 DCA → IAH 49 79.2%
UA344 DCA → IAH 49 79.6%
YX4618 DCA → IAH 46 74.4%
YX4618 IAH → DCA 46 69.1%
OH5224 IAH → DCA 45 77.5%
OH5132 DCA → IAH 44 77.3%
OH5163 IAH → DCA 43 81.0%
OH5029 DCA → IAH 38 72.2%
OH5132 IAH → DCA 38 63.2%
YX4673 DCA → IAH 38 67.6%
YX4673 IAH → DCA 38 45.7%
OH5224 DCA → IAH 37 79.4%
OH5599 IAH → DCA 37 78.4%
OH5599 DCA → IAH 37 81.1%
UA1098 IAH → DCA 37 100.0%
UA1193 IAH → DCA 37 74.3%
UA1262 IAH → DCA 37 97.1%
UA2050 IAH → DCA 37 81.1%
UA229 DCA → IAH 37 69.4%
OH5639 IAH → DCA 36 54.6%
OH5639 DCA → IAH 36 62.9%
UA2047 IAH → DCA 36 97.2%
UA731 DCA → IAH 36 88.9%
UA743 DCA → IAH 36 75.0%
OH5598 IAH → DCA 35 69.7%
UA1067 DCA → IAH 35 88.6%
UA2140 IAH → DCA 35 77.1%
UA2263 IAH → DCA 35 80.0%
UA2296 IAH → DCA 35 58.8%
UA2332 IAH → DCA 35 48.6%
UA2621 DCA → IAH 35 60.0%
UA741 DCA → IAH 35 82.9%
OH5074 DCA → IAH 34 81.8%
UA1107 DCA → IAH 34 64.7%
UA2456 DCA → IAH 34 61.8%
YX4584 IAH → DCA 33 93.3%
UA1346 IAH → DCA 32 75.0%
UA1771 IAH → DCA 32 90.6%
UA2388 DCA → IAH 32 65.6%
UA2670 IAH → DCA 32 90.6%
UA351 DCA → IAH 32 81.3%
YX4441 IAH → DCA 32 75.9%
YX4520 DCA → IAH 32 82.8%
YX4584 DCA → IAH 32 96.6%
UA1413 DCA → IAH 31 83.3%
UA2017 IAH → DCA 31 90.0%
UA2850 IAH → DCA 31 96.8%
UA1128 IAH → DCA 30 76.7%
UA1755 DCA → IAH 30 48.3%

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 545 +34.9% 23 70.8%
June 2026 545 +43.8% 15 69.4%
May 2026 572 +40.5% 5 76.0%
April 2026 565 +39.9% 0 81.9%
March 2026 558 +42.3% 20 79.2%
February 2026 506 +45.8% 11 84.0%
January 2026 527 +66.2% 37 84.6%
December 2025 543 +51.3% 4 83.4%
November 2025 524 +33.7% 16 81.1%
October 2025 582 +147.7% 0 83.5%
September 2025 544 0 86.4%
August 2025 411 3 75.4%
July 2025 404 10 72.0%
June 2025 379 8 70.2%
May 2025 407 4 79.6%
April 2025 404 0 85.9%
March 2025 392 0 86.2%
February 2025 347 5 72.3%
January 2025 317 36 85.8%
December 2024 359 0 82.7%
November 2024 392 0 88.0%
October 2024 235 1 91.1%

How to read this chart

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