Dulles (IAD) to Miami (MIA)
Flight time
≈ 2h 39m
Bearing
191° S
Dulles (IAD) to Miami (MIA) is 923 miles (1,486 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAD–MIA
Filed traffic dataIn May 2026, United Airlines operated the most departures, one of 4 carriers flying nonstop IAD–MIA; the Boeing 737-900ER was the most common aircraft at 39% of departures; flights ran 79% full.
Departures
94
May 2026
Seats
16,340
both directions
Passengers
12,979
both directions
Load factor
79.4%
RPM ÷ ASM
Who flies IAD–MIA?
United Airlines operated the most nonstop IAD–MIA departures in May 2026 (89), one of 4 carriers on the route.
- UA
89 departures · 15,697 seats
Share of departures94.7%80.0%
Load
- AA
2 departures · 344 seats
Share of departures2.1%85.5%
Load
- DL
2 departures · 144 seats
Share of departures2.1%94.4%
Load
- WL
1 departures · 155 seats
Share of departures1.1%0.0%
Load
What plane flies IAD–MIA?
In May 2026, the Boeing 737-900ER flew 39% of IAD–MIA departures — more than any other aircraft type.
- Boeing 737-900ER
37 departures · 80.7% load
39.4% - Boeing 737 MAX 9
34 departures · 85.2% load
36.2% - Boeing 737 MAX 8
17 departures · 66.0% load
18.1% - Boeing 737-800
3 departures · 89.1% load
3.2% - Boeing 757-200
2 departures · 94.4% load
2.1% - McDonnell Douglas DC-9
1 departures · 0.0% load
1.1%
How has IAD–MIA traffic changed?
Nonstop IAD–MIA departures fell from 117 in June 2025 to 94 in May 2026.
Monthly nonstop IAD–MIA traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
117 departures · 16,142 passengers
81.8%
Load
July 2025
106 departures · 15,562 passengers
82.3%
Load
August 2025
108 departures · 15,509 passengers
78.4%
Load
September 2025
98 departures · 12,740 passengers
73.2%
Load
October 2025
103 departures · 13,794 passengers
74.7%
Load
November 2025
96 departures · 13,951 passengers
82.2%
Load
December 2025
118 departures · 18,627 passengers
85.6%
Load
January 2026
147 departures · 21,487 passengers
82.9%
Load
February 2026
128 departures · 17,520 passengers
80.1%
Load
March 2026
138 departures · 19,362 passengers
83.4%
Load
April 2026
139 departures · 19,207 passengers
78.2%
Load
May 2026
94 departures · 12,979 passengers
79.4%
Load
By direction
Each direction is filed separately — they rarely match.
IAD → MIA
75.3% full
47 departures · 6,068 passengers
MIA → IAD
83.5% full
47 departures · 6,911 passengers
Nonstop IAD–MIA traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Dulles (IAD) from Miami (MIA)?
IAD to MIA is 923 miles (1,486 km / 802 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAD to MIA?
A nonstop covers the 923-mile great-circle distance in roughly 2h 39m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAD–MIA?
In May 2026, the Boeing 737-900ER flew the largest share of departures (39.4%), followed by the Boeing 737 MAX 9 (36.2%).
What mileage do I earn flying IAD–MIA?
Distance-based programs credit off the 923-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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