Dulles (IAD) to Salt Lake City (SLC)
Flight time
≈ 4h 27m
Bearing
285° W
Dulles (IAD) to Salt Lake City (SLC) is 1,823 miles (2,935 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAD–SLC
Filed traffic dataIn July 2026, Delta Air Lines operated the most departures, one of 3 carriers flying nonstop IAD–SLC; the Boeing 737-800 was the most common aircraft at 52% of departures; flights ran 91% full.
Departures
122
July 2026
Seats
18,090
both directions
Passengers
16,375
both directions
Load factor
90.5%
RPM ÷ ASM
Who flies IAD–SLC?
Delta Air Lines operated the most nonstop IAD–SLC departures in July 2026 (62), one of 3 carriers on the route.
- DL
62 departures · 9,919 seats
Share of departures50.8%93.8%
Load
- UA
58 departures · 7,799 seats
Share of departures47.5%89.5%
Load
- SY
2 departures · 372 seats
Share of departures1.6%26.1%
Load
What plane flies IAD–SLC?
In July 2026, the Boeing 737-800 flew 52% of IAD–SLC departures — more than any other aircraft type.
- Boeing 737-800
64 departures · 91.3% load
52.5% - Boeing 737-700
47 departures · 93.8% load
38.5% - Boeing 737-900ER
4 departures · 74.4% load
3.3% - Boeing 737 MAX 8
3 departures · 78.5% load
2.5% - Boeing 737 MAX 9
3 departures · 78.6% load
2.5% - Airbus A319
1 departures · 64.3% load
0.8%
How has IAD–SLC traffic changed?
Nonstop IAD–SLC departures fell from 126 in August 2025 to 122 in July 2026.
Monthly nonstop IAD–SLC traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
126 departures · 17,375 passengers
87.7%
Load
September 2025
121 departures · 15,548 passengers
87.8%
Load
October 2025
125 departures · 15,524 passengers
84.8%
Load
November 2025
119 departures · 14,198 passengers
76.9%
Load
December 2025
89 departures · 11,852 passengers
81.7%
Load
January 2026
117 departures · 14,474 passengers
78.2%
Load
February 2026
108 departures · 13,292 passengers
84.4%
Load
March 2026
126 departures · 15,786 passengers
83.7%
Load
April 2026
120 departures · 16,004 passengers
81.5%
Load
May 2026
123 departures · 17,099 passengers
87.8%
Load
June 2026
119 departures · 16,061 passengers
85.6%
Load
July 2026
122 departures · 16,375 passengers
90.5%
Load
By direction
Each direction is filed separately — they rarely match.
IAD → SLC
90.6% full
61 departures · 8,192 passengers
SLC → IAD
90.4% full
61 departures · 8,183 passengers
Nonstop IAD–SLC 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 Salt Lake City (SLC)?
IAD to SLC is 1,823 miles (2,935 km / 1,585 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAD to SLC?
A nonstop covers the 1,823-mile great-circle distance in roughly 4h 27m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAD–SLC?
In July 2026, the Boeing 737-800 flew the largest share of departures (52.5%), followed by the Boeing 737-700 (38.5%).
What mileage do I earn flying IAD–SLC?
Distance-based programs credit off the 1,823-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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