Cheap flights from Houston to Dulles (IAH to IAD) from $809
Compare prices across airlines and find the best deals
Discover deals on Houston to Dulles flights
Typical range $809-$1,109•Cheapest found $809
Updated recentlyCompare prices across airlines and find the best deals
Compare prices across airlines to find the best deal. Prices can vary significantly.
Flying midweek or in off-peak seasons can save you up to 30% on airfare.
Booking 6+ weeks in advance typically offers the best prices.
Airlines operating flights from Houston to Dulles include American Airlines, Alaska Airlines, Frontier Airlines.
Book at the right time: For domestic routes like Houston to Dulles, the sweet spot is 3–5 weeks before departure. Booking too early can mean missing seat sales; too late means paying peak prices.
Shift your dates by a day or two: Mid-week departures (Tuesday–Wednesday) are almost always cheaper than weekend flights. Even shifting by one day can make a meaningful difference.
Weigh up connecting flights: Connecting flights on Houston to Dulles can be 20–40% cheaper than direct options. If you have time to spare, it's worth comparing.
Factor in baggage fees: Low-cost carriers on this route often advertise attractive base fares but charge separately for checked luggage. Always compare the all-in price — a $20 cheaper fare plus $50 baggage fee is no saving. American Airlines and Alaska Airlines may have different inclusions, so check each airline's fare conditions.
Search in private browsing: Some booking sites use cookies to track repeat searches and may show higher prices after multiple lookups. Use an incognito or private window — or just use Booked AI, which pulls live prices without any tracking markup.
The cheapest flights from Houston to Dulles start from $809, with typical prices ranging from $809 to $1,109.
The typical flight time from Houston to Dulles is approximately 7 hours and 9 minutes.
Airlines operating this route include American Airlines, Alaska Airlines, Frontier Airlines.
Prices sourced via Duffel and updated regularly. All fares shown are indicative one-way prices in AUD and may vary at time of booking. Booked AI is an IATA-accredited travel platform.