St. Louis Lambert International Airport
St. Louis, United StatesSTL / KSTL
Major airport · 88 direct destinations · 4 runways · longest runway 11,020 ft
53 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
St. Louis → Dulles
STL
St. LouisSt. Louis Lambert International Airport
St. LouisSt. Louis Lambert International AirportIADDullesWashington Dulles International Airport
DullesWashington Dulles International Airport- Distance
- 695 mi
- Estimated flight time
- ~1h 55m
Dulles is currently 1 hour ahead of St. Louis.
Observed nonstop
How often does this route fly?
Frequency
A couple of times a day
On average around 2 flights a day, observed from October 2025 to September 2026.
- 2
- flights per day
- 2
- busiest month · Oct
- 1 hr 34 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 2Jan2026
- 2Feb
- 2Mar
- 2Apr
- 2May
- 2Jun
- 2Jul
- 2Aug
- 2Sep
- 2Oct2025
- 2Nov
- 2Dec
Airlines
Who flies it
GoJet Airlines LLCall year
Red Barn Operationswinter
Arizona Express Airlinesnow and then
American Airlinesnow and then
Through the day
Departure times
Local time in St. Louis. Most departures between 08:00 and 11:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 2.1Mon
- 2.3Tue
- 2.2Wed
- 2.1Thu
- 2.2Fri
- 1.9Sat
- 2.3Sun
Fleet
Aircraft observed
- Bombardier CRJ700CRJ785%
- Cessna Citation LatitudeC68A2%
- Bombardier Challenger 600CL602%
- Embraer Phenom 300E55P2%
- Cessna Citation ExcelC56X1%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 2 | 63 |
|
| February 2026 | 2 | 63 |
|
| March 2026 | 2 | 69 |
|
| April 2026 | 2 | 69 |
|
| May 2026 | 2 | 64 |
|
| June 2026 | 2 | 68 |
|
| July 2026 | 2 | 64 |
|
| August 2026 | 2 | 63 |
|
| September 2026 | 2 | 67 |
|
| October 2025 | 2 | 61 |
|
| November 2025 | 2 | 63 |
|
| December 2025 | 2 | 63 |
|
Airlines observed on this route
From observed callsign routes on STL-IAD - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from St. Louis: 88.
- Direct destinations observed from Dulles: 171.
The airports on this route
Washington Dulles International Airport
Dulles, United StatesIAD / KIAD
International hub · 171 direct destinations · 4 runways · longest runway 11,499 ft
72 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from St. Louis to Dulles
The observed direct connection between St. Louis Lambert International Airport (STL) and Washington Dulles International Airport (IAD) covers approximately 695 mi. The estimated flight time is around 1h 55m. American Airlines, Arizona Express Airlines, GoJet Airlines LLC and Red Barn Operations have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is St. Louis from Dulles by air?
- The great-circle distance between St. Louis Lambert International Airport and Washington Dulles International Airport is approximately 695 mi.
- How long is the flight from St. Louis to Dulles?
- Based on the distance, the estimated flight time is about 1h 55m. This is an estimate, not a schedule.
- Is there a direct connection from St. Louis to Dulles?
- Yes, a direct connection between STL and IAD has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: American Airlines, Arizona Express Airlines, GoJet Airlines LLC and Red Barn Operations.
- How often is there a flight from St. Louis to Dulles?
- On average around 2 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 777 observed flights. Mainly GoJet Airlines LLC, Red Barn Operations, Arizona Express Airlines. That is an observation, not a timetable.
- What is the current time difference between St. Louis and Dulles?
- Dulles is currently 1 hour ahead of St. Louis.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.