Dulles (IAD) to Jacksonville (JAX)
Flight time
≈ 2h 04m
Bearing
204° SW
Dulles (IAD) to Jacksonville (JAX) is 631 miles (1,016 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAD–JAX
US DOT T-100 · filed dataIn April 2026, United Airlines operated the most departures, one of 2 carriers flying nonstop IAD–JAX; the Boeing 737-900ER was the most common aircraft at 44% of departures; flights ran 75% full.
Departures
136
April 2026
Seats
24,334
both directions
Passengers
18,342
both directions
Load factor
75.4%
passengers ÷ seats
Who flies IAD–JAX?
United Airlines operated the most nonstop IAD–JAX departures in April 2026 (120), one of 2 carriers on the route.
- UA
United Airlines
120 departures · 21,454 seats
Share of departures88.2%73.5%
Load
- G4
Allegiant Air
16 departures · 2,880 seats
Share of departures11.8%89.6%
Load
What plane flies IAD–JAX?
In April 2026, the Boeing 737-900ER flew 44% of IAD–JAX departures — more than any other aircraft type.
- Boeing 737-900ER
60 departures · 73.2% load
44.1% - Boeing 737 MAX 9
58 departures · 74.2% load
42.6% - Airbus A320
16 departures · 89.6% load
11.8% - Boeing 737 MAX 8
2 departures · 62.6% load
1.5%
How has IAD–JAX traffic changed?
Nonstop IAD–JAX departures fell from 197 in May 2025 to 136 in April 2026.
Monthly nonstop IAD–JAX traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
197 departures · 22,237 passengers
85.2%
Load
June 2025
197 departures · 19,443 passengers
83.2%
Load
July 2025
194 departures · 16,957 passengers
86.9%
Load
August 2025
194 departures · 15,750 passengers
81.7%
Load
September 2025
178 departures · 13,329 passengers
81.8%
Load
October 2025
186 departures · 15,212 passengers
78.0%
Load
November 2025
184 departures · 18,082 passengers
75.7%
Load
December 2025
170 departures · 17,064 passengers
77.0%
Load
January 2026
105 departures · 11,714 passengers
71.0%
Load
February 2026
104 departures · 13,082 passengers
74.2%
Load
March 2026
189 departures · 25,441 passengers
76.4%
Load
April 2026
136 departures · 18,342 passengers
75.4%
Load
By direction
The DOT files each direction separately — they rarely match.
IAD → JAX
72.1% full
68 departures · 8,775 passengers
JAX → IAD
78.6% full
68 departures · 9,567 passengers
Nonstop IAD–JAX traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
The airports
Frequently asked
How far is Dulles (IAD) from Jacksonville (JAX)?
IAD to JAX is 631 miles (1,016 km / 549 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAD to JAX?
A nonstop covers the 631-mile great-circle distance in roughly 2h 04m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAD–JAX?
In April 2026, the Boeing 737-900ER flew the largest share of departures (44.1%), followed by the Boeing 737 MAX 9 (42.6%).
What mileage do I earn flying IAD–JAX?
Distance-based programs credit off the 631-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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