Atlanta (ATL) to Dulles (IAD)

534mi
859 km464 nm

Flight time

≈ 1h 52m

Bearing

45° NE

Atlanta (ATL) to Dulles (IAD) is 534 miles (859 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.

Route map: ATL → IADATLIAD

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What actually flies ATL–IAD

Filed traffic data

In May 2026, Delta Air Lines operated the most departures, one of 5 carriers flying nonstop ATL–IAD; the Airbus A320 was the most common aircraft at 26% of departures; flights ran 77% full.

Departures

809

May 2026

Seats

134,810

both directions

Passengers

103,375

both directions

Load factor

76.7%

RPM ÷ ASM

Who flies ATL–IAD?

Delta Air Lines operated the most nonstop ATL–IAD departures in May 2026 (410), one of 5 carriers on the route.

  • DL

    Delta Air Lines

    410 departures · 61,296 seats

    79.8%

    Load

  • UA

    United Airlines

    219 departures · 31,283 seats

    75.5%

    Load

  • F9

    Frontier Airlines

    178 departures · 41,986 seats

    73.0%

    Load

  • WN

    Southwest Airlines

    1 departures · 175 seats

    81.1%

    Load

  • YV

    Mesa Airlines

    1 departures · 70 seats

    75.7%

    Load

What plane flies ATL–IAD?

In May 2026, the Airbus A320 flew 26% of ATL–IAD departures — more than any other aircraft type.

How has ATL–IAD traffic changed?

Nonstop ATL–IAD departures rose from 703 in June 2025 to 809 in May 2026.

Monthly nonstop ATL–IAD traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.

  • June 2025

    703 departures · 80,052 passengers

    81.5%

    Load

  • July 2025

    689 departures · 82,365 passengers

    81.8%

    Load

  • August 2025

    702 departures · 80,012 passengers

    79.0%

    Load

  • September 2025

    680 departures · 72,554 passengers

    74.7%

    Load

  • October 2025

    725 departures · 83,942 passengers

    78.2%

    Load

  • November 2025

    671 departures · 72,631 passengers

    71.6%

    Load

  • December 2025

    666 departures · 77,844 passengers

    81.0%

    Load

  • January 2026

    542 departures · 55,532 passengers

    68.4%

    Load

  • February 2026

    522 departures · 58,854 passengers

    72.1%

    Load

  • March 2026

    602 departures · 69,315 passengers

    78.6%

    Load

  • April 2026

    713 departures · 79,769 passengers

    72.2%

    Load

  • May 2026

    809 departures · 103,375 passengers

    76.7%

    Load

By direction

Each direction is filed separately — they rarely match.

ATL → IAD

79.7% full

405 departures · 53,527 passengers

IAD → ATL

73.7% full

404 departures · 49,848 passengers

Nonstop ATL–IAD 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

ATL

Atlanta

US

Hartsfield Jackson Atlanta International Airport

Coordinates

33.64°N, 84.43°W

Hemisphere

N · W

IAD

Dulles

US

Washington Dulles International Airport

Coordinates

38.94°N, 77.46°W

Hemisphere

N · W

Frequently asked

How far is Atlanta (ATL) from Dulles (IAD)?

ATL to IAD is 534 miles (859 km / 464 nautical miles) measured great-circle — the shortest path over the surface of the Earth.

How long is the flight from ATL to IAD?

A nonstop covers the 534-mile great-circle distance in roughly 1h 52m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.

What plane flies ATL–IAD?

In May 2026, the Airbus A320 flew the largest share of departures (25.8%), followed by the Airbus A321neo (18.9%).

What mileage do I earn flying ATL–IAD?

Distance-based programs credit off the 534-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.

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