Dulles (IAD) to St Louis (STL)
Flight time
≈ 2h 11m
Bearing
273° W
Dulles (IAD) to St Louis (STL) is 694 miles (1,118 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAD–STL
Filed traffic dataIn July 2026, GoJet Airlines operated the most departures, one of 2 carriers flying nonstop IAD–STL; the Bombardier CRJ-550 was the most common aircraft at 99% of departures; flights ran 79% full.
Departures
121
July 2026
Seats
6,008
both directions
Passengers
4,760
both directions
Load factor
79.2%
RPM ÷ ASM
Who flies IAD–STL?
GoJet Airlines operated the most nonstop IAD–STL departures in July 2026 (120), one of 2 carriers on the route.
- G7
120 departures · 6,000 seats
Share of departures99.2%79.3%
Load
- 27Q
1 departures · 8 seats
Share of departures0.8%0.0%
Load
What plane flies IAD–STL?
In July 2026, the Bombardier CRJ-550 flew 99% of IAD–STL departures — more than any other aircraft type.
- Bombardier CRJ-550
120 departures · 79.3% load
99.2% - Bombardier BD-100-1A10 Challenger 300
1 departures · 0.0% load
0.8%
How has IAD–STL traffic changed?
Nonstop IAD–STL departures fell from 125 in August 2025 to 121 in July 2026.
Monthly nonstop IAD–STL traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
125 departures · 5,236 passengers
82.1%
Load
September 2025
117 departures · 4,920 passengers
82.5%
Load
October 2025
103 departures · 4,025 passengers
77.8%
Load
November 2025
119 departures · 4,719 passengers
79.3%
Load
December 2025
124 departures · 4,759 passengers
76.4%
Load
January 2026
118 departures · 4,343 passengers
73.6%
Load
February 2026
112 departures · 4,226 passengers
73.5%
Load
March 2026
125 departures · 4,848 passengers
76.0%
Load
April 2026
119 departures · 4,532 passengers
75.2%
Load
May 2026
124 departures · 4,766 passengers
75.3%
Load
June 2026
122 departures · 4,869 passengers
79.5%
Load
July 2026
121 departures · 4,760 passengers
79.2%
Load
By direction
Each direction is filed separately — they rarely match.
STL → IAD
78.2% full
62 departures · 2,391 passengers
IAD → STL
80.3% full
59 departures · 2,369 passengers
Nonstop IAD–STL traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Dulles (IAD) from St Louis (STL)?
IAD to STL is 694 miles (1,118 km / 603 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAD to STL?
A nonstop covers the 694-mile great-circle distance in roughly 2h 11m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAD–STL?
In July 2026, the Bombardier CRJ-550 flew the largest share of departures (99.2%), followed by the Bombardier BD-100-1A10 Challenger 300 (0.8%).
What mileage do I earn flying IAD–STL?
Distance-based programs credit off the 694-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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