Dulles to Houston (IAD–IAH) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
IAD–IAH is served by 1 airline with nonstop service. United Airlines leads the route. The flight covers 1,189 miles in approximately 3h 25m. Beyond nonstop, 1-stop connecting options are also available.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines Also: AV, AZ, CA, EK, LX, NZ, SN | 56 | 320, 738, 739, 7M9, B38M | 3h09-3h45 | Star Alliance | AV, AZ, CA, EK, LX, NZ, SN |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach Houston from Dulles
| Metric | IAD→IAH | DCA→IAH | BWI→IAH |
|---|---|---|---|
| Distance from IAD | – | 23 mi | 45 mi |
| Nonstop airlines | 1 | 4 | 11 |
| Weekly flights | 123 | 120 | 86 |
| Flight time | 3h 25m | 3h 13m | 2h 52m |
| Departure OTP | 70% | – | – |
Travel Essentials
IAD: EDT · IAH: CDT
When it's 6:00 PM in Dulles, it's 5:00 PM in Houston.
WMATA Silver Line Metro now reaches Dulles directly; take Silver Line to Washington Dulles Airport station (about 65 min from Metro Center, ~$7). The connection opened in late 2022.Ride-shares from downtown DC run $35–60 and take 35–50 minutes via I-66 (longer during peak hours). Washington Flyer coach to Wiehle-Reston East Metro costs $6. The airport is 27 miles from downtown; taxis are expensive ($60–80).
No direct rail from IAH. The METRO bus 102 (IAH Express) runs to downtown Houston's transit center (60–90 min, $1.25). Taxis to downtown Houston cost $50–70. Ride-hails pick up at the designated Rideshare zones outside baggage claim on the lower level.IAH has five terminals (A–E) connected by an underground tunnel with trams. Terminal D handles international arrivals. Rental car agencies are in a consolidated facility adjacent to Terminal C; a free IAH Connector bus runs between terminals and the rental car center. The Galleria / Uptown area costs $35–50 by ride-hail.
Humid subtropical climate. Hot, humid, and wet for much of the year. Summers are brutal (33–38°C) with high humidity and near-daily afternoon thunderstorms. Severe storms with hail and high winds regularly cause ground stops from April through September. Houston's flooding risk is significant. Heavy rain events, including tropical system remnants, have flooded airport roads, cutting off surface access even when the airport itself remains operational.
Winters are mild (5–18°C) with occasional ice storms. These are rare but highly disruptive when they occur. Hurricane season (June–November) requires monitoring for Gulf storms. October through March has the best flying weather.
IAD–IAH Quick Facts
Frequently Asked Questions
Flights from IAD to IAH
Washington Dulles International Airport (IAD) and George Bush Intercontinental Airport (IAH) are connected by nonstop service from United Airlines. With 123 weekly departures, this is a heavily served route.
IAD to IAH Flight Duration and Schedule
Nonstop flight time from IAD to IAH is about 3 hours 25 minutes gate to gate. The route covers a distance of 1,189 miles (1,913 km). There are approximately 123 weekly flights outbound and 103 return, totaling 226 flights per week in both directions.
Connecting Options and Alternatives
1-stop connecting options are also available, commonly via Hartsfield Jackson Atlanta, McGhee Tyson and Charlotte Douglas. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Washington (DCA), Baltimore (BWI) and Charlottesville (CHO).