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 June 2026, Delta Air Lines operated the most departures, one of 2 carriers flying nonstop IAD–SLC; the Boeing 737-800 was the most common aircraft at 64% of departures; flights ran 86% full.
Departures
119
June 2026
Seats
18,761
both directions
Passengers
16,061
both directions
Load factor
85.6%
RPM ÷ ASM
Who flies IAD–SLC?
Delta Air Lines operated the most nonstop IAD–SLC departures in June 2026 (61), one of 2 carriers on the route.
- DL
61 departures · 9,792 seats
Share of departures51.3%93.3%
Load
- UA
58 departures · 8,969 seats
Share of departures48.7%77.2%
Load
What plane flies IAD–SLC?
In June 2026, the Boeing 737-800 flew 64% of IAD–SLC departures — more than any other aircraft type.
- Boeing 737-800
76 departures · 88.4% load
63.9% - Boeing 737-700
22 departures · 83.8% load
18.5% - Boeing 737 MAX 9
9 departures · 79.7% load
7.6% - Boeing 737-900ER
8 departures · 73.1% load
6.7% - Boeing 737 MAX 8
3 departures · 80.7% load
2.5% - Airbus A321neo
1 departures · 90.7% load
0.8%
How has IAD–SLC traffic changed?
Nonstop IAD–SLC departures fell from 124 in July 2025 to 119 in June 2026.
Monthly nonstop IAD–SLC traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
July 2025
124 departures · 18,492 passengers
88.5%
Load
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
By direction
Each direction is filed separately — they rarely match.
SLC → IAD
83.6% full
60 departures · 7,919 passengers
IAD → SLC
87.6% full
59 departures · 8,142 passengers
Nonstop IAD–SLC traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 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 June 2026, the Boeing 737-800 flew the largest share of departures (63.9%), followed by the Boeing 737-700 (18.5%).
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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