Houston to Dulles (IAH–IAD) — Airlines, Schedules & Connections
No flights match your filters.
No nonstop flights on this route. connecting options below.
IAH–IAD is served by 2 airlines with nonstop service. United Airlines and Frontier lead the route. The flight covers 1,189 miles in approximately 2h 39m. Beyond nonstop, 202 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines Also: AV, CA, EK, LX, NZ, SN | 50 | 320, 738, 739, 73G, B39M | 2h39-3h19 | Star Alliance | AV, CA, EK, LX, NZ, SN | |
| F9 Frontier | 0 | – | – | – | – |
Weekly Schedule Pattern
Connection Landscape
Other ways to reach Dulles from Houston
| Metric | IAH→IAD | HOU→IAD | CLL→IAD |
|---|---|---|---|
| Distance from IAH | – | 24 mi | 74 mi |
| Nonstop airlines | 2 | 12 | 1 |
| Weekly flights | 94 | 5 | 1 |
| Flight time | 2h 39m | 2h 37m | 3h 12m |
| Departure OTP | 85% | – | – |
Travel Essentials
IAH: CDT · IAD: EDT
When it's 6:00 PM in Houston, it's 7:00 PM in Dulles.
IAH has no direct rail link to downtown Houston. The IAH Express bus runs from Houston Amtrak/Greyhound station via Park & Ride to Terminal C (60–90 min, $1.25 with METRO Q card). This is the only transit option; Houston's rail network does not reach the airport.Taxis from downtown Houston cost $50–70 and take 40–60 minutes. Ride-hails (Uber, Lyft) are typically $35–55. IAH sits 23 miles north of downtown on the North Freeway (I-45); traffic is heavy during morning and evening rush. Remote economy parking lots serve all terminals via shuttle.
Silver Line Metro runs from Washington Dulles Airport station to Metro Center in about 65 minutes (~$7). The route bypasses I-66 and I-495 congestion entirely. Washington Flyer coach also runs to Wiehle-Reston East station ($6, 15 min) for Metro connection.Taxis and ride-shares to downtown DC cost $55–80 and take 35–55 minutes depending on traffic. Car rental facilities are on-site. Dulles is 27 miles west of the Capitol; it is farther than either DCA or BWI from central DC.
Humid continental climate. Summers are hot and muggy (30–36°C) with frequent afternoon thunderstorms that cause delays June through August. Winters bring cold temperatures (−3 to 5°C) with snow and ice. The Virginia suburbs accumulate more snow than downtown DC, and ice storms are the primary disruption risk.
Dulles sits at higher elevation in Virginia's piedmont and sees more winter precipitation than DCA. Spring and fall are variable. Snowfall is possible into April. Thunderstorms begin from April through May.
IAH–IAD Quick Facts
Frequently Asked Questions
Flights from IAH to IAD
George Bush Intercontinental Airport (IAH) and Washington Dulles International Airport (IAD) are connected by nonstop service from Frontier and United Airlines. With 94 weekly departures, this is a heavily served route.
IAH to IAD Flight Duration and Schedule
Nonstop flight time from IAH to IAD ranges from 2 hours 39 minutes to 3 hours 19 minutes. The route covers a distance of 1,189 miles (1,913 km). There are approximately 94 weekly flights outbound and 119 return, totaling 213 flights per week in both directions.
Connecting Options and Alternatives
202 one-stop connections are available, with the fastest taking approximately 3 hours via MFE. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Houston (HOU), College Station (CLL) and Lake Charles (LCH).