Dayton (DAY) to Dulles (IAD)
Flight time
≈ 1h 32m
Bearing
98° E
Dayton (DAY) to Dulles (IAD) is 367 miles (590 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
Look up a route, or build a trip
Change the airports, or add stops for a multi-leg trip.
What actually flies DAY–IAD
Filed traffic dataIn June 2026, CommuteAir operated the most departures, one of 2 carriers flying nonstop DAY–IAD; the Embraer ERJ-145 was the most common aircraft at 93% of departures; flights ran 87% full.
Departures
167
June 2026
Seats
8,350
both directions
Passengers
7,230
both directions
Load factor
86.6%
RPM ÷ ASM
Who flies DAY–IAD?
CommuteAir operated the most nonstop DAY–IAD departures in June 2026 (155), one of 2 carriers on the route.
- C5
155 departures · 7,750 seats
Share of departures92.8%87.1%
Load
- G7
12 departures · 600 seats
Share of departures7.2%80.7%
Load
What plane flies DAY–IAD?
In June 2026, the Embraer ERJ-145 flew 93% of DAY–IAD departures — more than any other aircraft type.
- Embraer ERJ-145
155 departures · 87.1% load
92.8% - Bombardier CRJ-550
12 departures · 80.7% load
7.2%
How has DAY–IAD traffic changed?
Nonstop DAY–IAD departures fell from 169 in July 2025 to 167 in June 2026.
Monthly nonstop DAY–IAD traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
July 2025
169 departures · 7,592 passengers
89.6%
Load
August 2025
185 departures · 7,653 passengers
82.7%
Load
September 2025
181 departures · 7,603 passengers
83.9%
Load
October 2025
182 departures · 7,094 passengers
78.0%
Load
November 2025
150 departures · 5,729 passengers
76.4%
Load
December 2025
150 departures · 6,343 passengers
84.6%
Load
January 2026
130 departures · 5,139 passengers
78.9%
Load
February 2026
115 departures · 4,776 passengers
81.9%
Load
March 2026
130 departures · 5,641 passengers
85.1%
Load
April 2026
146 departures · 6,309 passengers
85.8%
Load
May 2026
181 departures · 7,525 passengers
83.2%
Load
June 2026
167 departures · 7,230 passengers
86.6%
Load
By direction
Each direction is filed separately — they rarely match.
IAD → DAY
87.2% full
84 departures · 3,664 passengers
DAY → IAD
85.9% full
83 departures · 3,566 passengers
Nonstop DAY–IAD 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 Dayton (DAY) from Dulles (IAD)?
DAY to IAD is 367 miles (590 km / 319 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from DAY to IAD?
A nonstop covers the 367-mile great-circle distance in roughly 1h 32m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies DAY–IAD?
In June 2026, the Embraer ERJ-145 flew the largest share of departures (92.8%), followed by the Bombardier CRJ-550 (7.2%).
What mileage do I earn flying DAY–IAD?
Distance-based programs credit off the 367-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
Keep exploring
Every route below is its own page.
Popular long-haul routes