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Direct flights from Dulles to Saint Louis

Airlines Schedules Nearby airports that offer flights to STL

IAD - STL route map All flights from IAD to STL non-stop. There are direct flights from Washington Dulles International (IAD), Virginia, USA to Saint Louis Airport (STL), Missouri, USA with United Airlines. 13 weekly departures are currently scheduled on this route. Departure times range from 08:20 to 18:00 depending on the schedule period. The flight distance is 698 miles (1123 km). Flight time ranges from 2 hours and 21 minutes to 2 hours and 35 minutes.

IAD
Washington Dulles
USADulles , USA
STL
Saint Louis Airport
USASaint Louis , USA
IAD
Washington Dulles
USADulles , USA
Saint Louis Airport
USASaint Louis , USA
STL
Flight time 2h 21min to 2h 35min
Updated Sep 28, 2026
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Airlines with non-stop routes:

United Airlines Star Alliance

Departure times vary between 08:20 and 18:00
S
M
T
W
T
F
S
Sun
Mon
Tue
Wed
Thu
Fri
Sat
13 flights/week
13 flights/week
Weekday-labels: HAS FLIGHTS UPCOMING NO FLIGHTS
View all flight dates
Flight schedule from Dulles to Saint Louis with United Airlines

This is a weekly direct flight schedule for United Airlines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.

 
Flight
Mon
Oct 26
Tue
Oct 27
Wed
Oct 28
Thu
Oct 29
Fri
Oct 30
Sat
Oct 31
Sun
Nov 1
UA4427
08:40
08:40
08:40
08:40
08:40
08:40
08:40
UA4527
17:55
17:55
17:55
17:55
17:55
17:55
17:55

The timetable & schedule information was updated at 2026-09-28

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Dulles to Saint Louis scheduled departures

Select a date to see every published non-stop departure between IAD and STL.

Wednesday
Wed
Oct 28
2 flights(2)
Thursday
Thu
Oct 29
2 flights(2)
Friday
Fri
Oct 30
2 flights(2)
Saturday
Sat
Oct 31
2 flights(2)
Sunday
Sun
Nov 01
2 flights(2)
Monday
Mon
Nov 02
2 flights(2)
Tuesday
Tue
Nov 03
2 flights(2)
Time
Airline
Flight
08:40
United Airlines United Airlines
UA4427
17:55
United Airlines United Airlines
UA4527
08:40
United Airlines United Airlines
UA4427
17:55
United Airlines United Airlines
UA4527
08:40
United Airlines United Airlines
UA4427
17:55
United Airlines United Airlines
UA4527
08:40
United Airlines United Airlines
UA4427
17:55
United Airlines United Airlines
UA4527
08:40
United Airlines United Airlines
UA4427
17:55
United Airlines United Airlines
UA4527
08:40
United Airlines United Airlines
UA4427
17:55
United Airlines United Airlines
UA4527
08:40
United Airlines United Airlines
UA4427
17:55
United Airlines United Airlines
UA4527
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IAD-STL flight route
Route map from Dulles, IAD to Saint Louis, STL. The distance is 698 miles or 1123 km.
Dulles - Saint Louis direct flight map
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IAD - STL route facts

  • Distance
    698 miles (1123 km)
  • Flight time
    2 hours and 21 minutes to 2 hours and 35 minutes
  • Airline
    United United
  • Airline alliances
    Star Alliance
  • Cabins
    Economy First
  • Hub airports
    IAD (Secondary hub.)
  • Arrival terminals
    Terminal 1
  • Aircraft
    Canadair (Bombardier) Regional Jet 550 and Embraer 175 (Enhanced Winglets)

Route FAQ

United Airlines operates non-stop flights from IAD to STL with 13 weekly departures.

Scheduled flight time from IAD to STL ranges from 2 hours and 21 minutes to 2 hours and 35 minutes. The route covers 698 miles (1123 km).

13 weekly departures are currently scheduled on this route, with published departure times ranging from 08:20 to 18:00 depending on the schedule period.

Arrival terminal: Terminal 1.

Economy and First are currently scheduled on non-stop flights for this route.
Nearby airports that offer flights to Saint Louis (STL)
From Reagan National (DCA)

63 flights per week

Direct flights from Dulles to MO, USA
From Dulles to Kansas City

MCI Kansas City International Airport
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