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 July 2026, United Airlines operated the most departures, one of 3 carriers flying nonstop IAD–MIA; the Boeing 737 MAX 9 was the most common aircraft at 72% of departures; flights ran 87% full.
Departures
71
July 2026
Seats
12,529
both directions
Passengers
10,951
both directions
Load factor
87.4%
RPM ÷ ASM
Who flies IAD–MIA?
United Airlines operated the most nonstop IAD–MIA departures in July 2026 (66), one of 3 carriers on the route.
- UA
66 departures · 11,788 seats
Share of departures93.0%87.3%
Load
- AA
4 departures · 724 seats
Share of departures5.6%89.8%
Load
- 24Q
Jet Story
1 departures · 17 seats
Share of departures1.4%41.2%
Load
What plane flies IAD–MIA?
In July 2026, the Boeing 737 MAX 9 flew 72% of IAD–MIA departures — more than any other aircraft type.
- Boeing 737 MAX 9
51 departures · 89.8% load
71.8% - Boeing 737-900ER
13 departures · 81.8% load
18.3% - Boeing 737-800
4 departures · 71.9% load
5.6% - Airbus A321
2 departures · 94.5% load
2.8% - Bombardier Global 6000
1 departures · 41.2% load
1.4%
How has IAD–MIA traffic changed?
Nonstop IAD–MIA departures fell from 108 in August 2025 to 71 in July 2026.
Monthly nonstop IAD–MIA traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
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
June 2026
63 departures · 9,338 passengers
84.6%
Load
July 2026
71 departures · 10,951 passengers
87.4%
Load
By direction
Each direction is filed separately — they rarely match.
MIA → IAD
87.8% full
38 departures · 5,965 passengers
IAD → MIA
87.0% full
33 departures · 4,986 passengers
Nonstop IAD–MIA 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 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 July 2026, the Boeing 737 MAX 9 flew the largest share of departures (71.8%), followed by the Boeing 737-900ER (18.3%).
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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