St Louis to Dulles (STL–IAD) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
STL–IAD is served by 2 airlines with nonstop service. United Airlines and GoJet Airlines lead the route. The flight covers 695 miles in approximately 1h 55m. Beyond nonstop, 150 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines Also: AV, CM, SN | 15 | 7M9, CR5, CR7 | 1h55-2h10 | Star Alliance | AV, CM, SN | |
| G7 GoJet Airlines | 1 | – | – | – | – |
Weekly Schedule Pattern
Connection Landscape
Other ways to reach Dulles from St Louis
| Metric | STL→IAD | SPI→IAD | DEC→IAD |
|---|---|---|---|
| Distance from STL | – | 84 mi | 110 mi |
| Nonstop airlines | 2 | 1 | 1 |
| Weekly flights | 43 | – | 1 |
| Flight time | 1h 55m | 2h 11m | 1h 26m |
| Departure OTP | 60% | – | – |
Travel Essentials
STL: CDT · IAD: EDT
When it's 6:00 PM in St Louis, it's 7:00 PM in Dulles.
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.
STL–IAD Quick Facts
Frequently Asked Questions
Flights from STL to IAD
St. Louis Lambert International Airport (STL) and Washington Dulles International Airport (IAD) are connected by nonstop service from GoJet Airlines and United Airlines. With 43 weekly departures, this is a heavily served route.
STL to IAD Flight Duration and Schedule
Nonstop flight time from STL to IAD ranges from 1 hours 55 minutes to 2 hours 13 minutes. The route covers a distance of 695 miles (1,118 km). There are approximately 43 weekly flights outbound and 59 return, totaling 102 flights per week in both directions.
Connecting Options and Alternatives
150 one-stop connections are available, with the fastest taking approximately 3 hours via CMI. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Springfield (SPI), Decatur (DEC) and Peoria (PIA).