Dulles to St Louis (IAD–STL) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
IAD–STL is served by 3 airlines with nonstop service. United Airlines, avianca and Copa Airlines lead the route. The flight covers 695 miles in approximately 0h 50m. Beyond nonstop, 99 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines | 15 | CR7, E7W | 1h39-2h32 | Star Alliance | – | |
| AV avianca | 14 | CR5 | 2h33-2h38 | Star Alliance | – | |
| CM Copa Airlines | 14 | CR5, CR7 | 2h32-2h38 | Star Alliance | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach St Louis from Dulles
| Metric | IAD→STL | DCA→STL | BWI→STL |
|---|---|---|---|
| Distance from IAD | – | 23 mi | 45 mi |
| Nonstop airlines | 3 | 3 | 1 |
| Weekly flights | 44 | 85 | 50 |
| Flight time | 0h 50m | 1h | 2h 20m |
| Departure OTP | 62% | – | – |
Travel Essentials
IAD: EDT · STL: EDT
When it's 6:00 PM in Dulles, it's 6:00 PM in St Louis.
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).
IAD–STL Quick Facts
Frequently Asked Questions
Flights from IAD to STL
Washington Dulles International Airport (IAD) and St. Louis Lambert International Airport (STL) are connected by nonstop service from avianca, Copa Airlines and United Airlines. With 44 weekly departures, this is a heavily served route.
IAD to STL Flight Duration and Schedule
Nonstop flight time from IAD to STL ranges from 0 hours 50 minutes to 2 hours 38 minutes. The route covers a distance of 695 miles (1,118 km). There are approximately 44 weekly flights outbound and 37 return, totaling 81 flights per week in both directions.
Connecting Options and Alternatives
99 one-stop connections are available, with the fastest taking approximately 2 hours via SUS. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Washington (DCA) and Baltimore (BWI).