Dulles (IAD) to Reykjavík (KEF)
Flight time
≈ 6h 23m
Bearing
34° NE
Dulles (IAD) to Reykjavík (KEF) is 2,793 miles (4,495 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAD–KEF
Filed traffic dataIn July 2026, Icelandair operated the most departures, one of 2 carriers flying nonstop IAD–KEF; the Boeing 737 MAX 8 was the most common aircraft at 42% of departures; flights ran 83% full.
Departures
148
July 2026
Seats
25,056
both directions
Passengers
20,735
both directions
Load factor
82.8%
RPM ÷ ASM
Who flies IAD–KEF?
Icelandair operated the most nonstop IAD–KEF departures in July 2026 (90), one of 2 carriers on the route.
- FI
Icelandair
90 departures · 14,848 seats
Share of departures60.8%90.9%
Load
- UA
58 departures · 10,208 seats
Share of departures39.2%71.0%
Load
What plane flies IAD–KEF?
In July 2026, the Boeing 737 MAX 8 flew 42% of IAD–KEF departures — more than any other aircraft type.
- Boeing 737 MAX 8
62 departures · 89.6% load
41.9% - Boeing 757-200
58 departures · 71.0% load
39.2% - Boeing 737-900
28 departures · 93.5% load
18.9%
How has IAD–KEF traffic changed?
Nonstop IAD–KEF departures rose from 124 in August 2025 to 148 in July 2026.
Monthly nonstop IAD–KEF traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
124 departures · 16,403 passengers
82.4%
Load
September 2025
99 departures · 11,261 passengers
57.6%
Load
October 2025
80 departures · 9,645 passengers
67.0%
Load
November 2025
62 departures · 8,840 passengers
79.6%
Load
December 2025
61 departures · 6,336 passengers
55.0%
Load
January 2026
61 departures · 7,654 passengers
77.3%
Load
February 2026
57 departures · 6,507 passengers
63.6%
Load
March 2026
63 departures · 8,717 passengers
77.7%
Load
April 2026
58 departures · 8,405 passengers
80.5%
Load
May 2026
21 departures · 1,834 passengers
49.6%
Load
June 2026
138 departures · 17,193 passengers
74.1%
Load
July 2026
148 departures · 20,735 passengers
82.8%
Load
By direction
Each direction is filed separately — they rarely match.
IAD → KEF
85.5% full
74 departures · 10,709 passengers
KEF → IAD
80.0% full
74 departures · 10,026 passengers
Nonstop IAD–KEF 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
Reykjavík
IS
Keflavik International Airport
Coordinates
63.98°N, 22.61°W
Hemisphere
N · W
Frequently asked
How far is Dulles (IAD) from Reykjavík (KEF)?
IAD to KEF is 2,793 miles (4,495 km / 2,427 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAD to KEF?
A nonstop covers the 2,793-mile great-circle distance in roughly 6h 23m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAD–KEF?
In July 2026, the Boeing 737 MAX 8 flew the largest share of departures (41.9%), followed by the Boeing 757-200 (39.2%).
What mileage do I earn flying IAD–KEF?
Distance-based programs credit off the 2,793-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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