St. LouistoWashingtonFlight Time
STL–IAD · Nonstop
St. Louis (St. Louis Lambert International Airport) to Washington (Washington Dulles International Airport).
The estimated flight time from St. Louis (STL) to Washington (IAD) is about 2h 1m, covering 694 miles. United Airlines flies the route nonstop with 2/day departures, from 08:43 to 12:55 local time.
Plan this routeAt a glance
| Est. flight time | Distance | Route type | Captured freq. | Market |
|---|---|---|---|---|
| ~2h 1m Estimated from great-circle distance — no tracked flights yet. | 694 mi | Nonstop | 2/day From the current provider sample; confirm live timetables before booking. | Domestic |
Airlines on this route
Nonstop airlines from St. Louis to Washington
United Airlines operates 2/day flights from STL to IAD. Departures leave from Terminal 1 at STL.
- First departure
- 08:43
- Last departure
- 12:55
- Cadence
- 2 departures/day
- Scheduled departure times
- 2
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| United Airlines | 2/day | Bombardier CRJ, Canadair Regional Jet · Terminal 1 |
Aircraft on this route
Flying the other way?
IAD to STL flights — 2/day on 1 airline →Methodology: airline, aircraft, terminal, and departure-time details come from a full week of published airline schedules for STL, refreshed on a rolling basis. Frequency uses 14 scheduled departures across 7 observed days; flight time is estimated from flying distance until this route has enough tracked flights for an observed average.
Route FAQ
How long is the flight from St. Louis to Washington?
The estimated flight time from St. Louis (STL) to Washington (IAD) is about 2h 1m, based on the 694-mile flying distance.
How far is St. Louis from Washington?
St. Louis (STL) to Washington (IAD) is about 694 miles by air.
Are there nonstop flights from St. Louis to Washington?
Yes. United Airlines flies nonstop from St. Louis (STL) to Washington (IAD), with 2/day departures.
Which airlines fly from St. Louis to Washington?
United Airlines flies nonstop from St. Louis (STL) to Washington (IAD).
What aircraft fly from St. Louis to Washington?
The STL–IAD route is flown with Bombardier CRJ, Canadair Regional Jet.
Route hubs
Nearby airport options
Near Washington
- DCA - WashingtonRonald Reagan Washington Ntl Airport · 24 mi from IADFlights to DCA
- BWI - BaltimoreBaltimore/Washington International Thurgood Marshall Airport · 45 mi from IADFlights to BWI
- RIC - RichmondRichmond International Airport · 100 mi from IADFlights to RIC