Washington (DCA) to Houston (IAH)
Flight time
≈ 3h 13m
Bearing
245° SW
Washington (DCA) to Houston (IAH) is 1,206 miles (1,942 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies DCA–IAH
Filed traffic dataIn July 2026, United Airlines operated the most departures, one of 2 carriers flying nonstop DCA–IAH; the Airbus A319 was the most common aircraft at 30% of departures; flights ran 81% full.
Departures
535
July 2026
Seats
64,836
both directions
Passengers
52,459
both directions
Load factor
80.9%
RPM ÷ ASM
Who flies DCA–IAH?
United Airlines operated the most nonstop DCA–IAH departures in July 2026 (388), one of 2 carriers on the route.
- UA
388 departures · 55,116 seats
Share of departures72.5%80.1%
Load
- OH
147 departures · 9,720 seats
Share of departures27.5%85.5%
Load
What plane flies DCA–IAH?
In July 2026, the Airbus A319 flew 30% of DCA–IAH departures — more than any other aircraft type.
- Airbus A319
158 departures · 77.2% load
29.5% - Bombardier CRJ-700
132 departures · 86.8% load
24.7% - Boeing 737 MAX 8
89 departures · 76.4% load
16.6% - Boeing 737-700
66 departures · 90.5% load
12.3% - Boeing 737-800
48 departures · 85.4% load
9.0% - Airbus A320
25 departures · 78.8% load
4.7% - Bombardier CRJ-900
15 departures · 75.7% load
2.8% - Airbus A321neo
2 departures · 49.8% load
0.4%
How has DCA–IAH traffic changed?
Nonstop DCA–IAH departures rose from 412 in August 2025 to 535 in July 2026.
Monthly nonstop DCA–IAH traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
412 departures · 43,776 passengers
73.5%
Load
September 2025
545 departures · 43,025 passengers
61.7%
Load
October 2025
581 departures · 51,429 passengers
71.4%
Load
November 2025
525 departures · 46,278 passengers
67.1%
Load
December 2025
543 departures · 51,244 passengers
73.3%
Load
January 2026
527 departures · 40,620 passengers
62.4%
Load
February 2026
506 departures · 42,121 passengers
66.7%
Load
March 2026
553 departures · 52,997 passengers
76.7%
Load
April 2026
565 departures · 48,668 passengers
69.7%
Load
May 2026
570 departures · 52,518 passengers
74.0%
Load
June 2026
538 departures · 52,430 passengers
77.8%
Load
July 2026
535 departures · 52,459 passengers
80.9%
Load
By direction
Each direction is filed separately — they rarely match.
DCA → IAH
81.3% full
271 departures · 26,268 passengers
IAH → DCA
80.5% full
264 departures · 26,191 passengers
Nonstop DCA–IAH traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Washington (DCA) from Houston (IAH)?
DCA to IAH is 1,206 miles (1,942 km / 1,048 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from DCA to IAH?
A nonstop covers the 1,206-mile great-circle distance in roughly 3h 13m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies DCA–IAH?
In July 2026, the Airbus A319 flew the largest share of departures (29.5%), followed by the Bombardier CRJ-700 (24.7%).
What mileage do I earn flying DCA–IAH?
Distance-based programs credit off the 1,206-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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