Is there a nonstop flight from Houston (IAH) to Washington (IAD)?

Yes. United operates a nonstop IAH–IAD service year-round.

How often do flights leave IAH for IAD?

About 5× daily — 36.6 departures a week in August 2026, compared with 27.8 a week in February 2026.

How much does a nonstop IAH to IAD flight cost?

Half of tickets sold on this route were between $175 and $375 one way, with a median of $250. Based on 2,180 ticket records in the US DOT fare survey for Q2 2025.

Nonstop route

Houston to Washington nonstop

Yes: United flies direct from Houston (IAH) to Washington (IAD) about 5 times a day, year-round.

IAHHouston

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IADWashington

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5× daily36.6 flights a week

Year-roundflown 12 of the last 12 months

$175–$375typical one-way · median $250 · US DOT Q2 2025

1,190miles · about 3 hr

Route detail

Houston to Washington in numbers

Measured from US DOT filings, not estimated from distance.

Distance and flight time: 1,190 miles nonstop, about 3 hr gate to gate. Flight time is an estimate from the great-circle distance; the filings carry distance, not scheduled elapsed time.
Seasonality: Flew every month of the last year: busiest in September 2025 (45 flights a week), quietest in February 2026 (28 flights a week).
Sep 2025: 45 flights a week
Oct 2025: 41 flights a week
Nov 2025: 35 flights a week
Dec 2025: 32 flights a week
Jan 2026: 28 flights a week
Feb 2026: 28 flights a week
Mar 2026: 32 flights a week
Apr 2026: 34 flights a week
May 2026: 37 flights a week
Jun 2026: 42 flights a week
Jul 2026: 36 flights a week
Aug 2026: 37 flights a week
Flights a week by month, Sep 2025 to Aug 2026, from US DOT on-time filings.
Who operates the flights: United is the only carrier filing this pair.
Fares: Half of the 2,180 tickets in the US DOT fare survey for Q2 2025 sold between $175 and $375 one way, median $250. The survey runs a couple of quarters behind, so read it as the shape of the route's pricing rather than today's quote.
Jul to Sep (Q3 2024): median $250 one way, middle half $175 to $375, 1,678 tickets
Oct to Dec (Q4 2024): median $250 one way, middle half $175 to $375, 2,194 tickets
Jan to Mar (Q1 2025): median $250 one way, middle half $175 to $375, 1,643 tickets
Apr to Jun (Q2 2025): median $250 one way, middle half $175 to $375, 2,180 tickets
Fares held steady through the year: a median of $250 one way in every quarter of the DOT ticket survey (Q3 2024 to Q2 2025). Bars show the middle half of one-way fares; the mark is the median.

Flying the other way? Washington to Houston nonstop.

Also nonstop from Houston (IAH)

Busiest other routes out of the same airport

Chicago (ORD) about 18 times a day
Dallas/Fort Worth (DFW) about 15 times a day
Atlanta (ATL) about 13 times a day
Denver (DEN) about 13 times a day
Los Angeles (LAX) about 12 times a day
New York (LGA) about 11 times a day
Fort Lauderdale (FLL) about 9 times a day
Newark (EWR) about 9 times a day

All 140 nonstop destinations from IAH

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