Cancún (CUN) to Dulles (IAD)
Flight time
≈ 3h 31m
Bearing
22° N
Cancún (CUN) to Dulles (IAD) is 1,357 miles (2,184 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies CUN–IAD
Filed traffic dataIn May 2026, United Airlines was the only carrier flying nonstop CUN–IAD; the Boeing 737 MAX 9 was the most common aircraft at 73% of departures; flights ran 88% full.
Departures
124
May 2026
Seats
22,196
both directions
Passengers
19,477
both directions
Load factor
87.8%
RPM ÷ ASM
Who flies CUN–IAD?
United Airlines was the only carrier to fly nonstop CUN–IAD in May 2026 (124 departures).
- UA
124 departures · 22,196 seats
Share of departures100.0%87.8%
Load
What plane flies CUN–IAD?
In May 2026, the Boeing 737 MAX 9 flew 73% of CUN–IAD departures — more than any other aircraft type.
- Boeing 737 MAX 9
91 departures · 86.2% load
73.4% - Boeing 737-900ER
33 departures · 92.0% load
26.6%
How has CUN–IAD traffic changed?
Nonstop CUN–IAD departures rose from 119 in June 2025 to 124 in May 2026.
Monthly nonstop CUN–IAD traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
119 departures · 18,536 passengers
87.0%
Load
July 2025
123 departures · 20,049 passengers
91.1%
Load
August 2025
98 departures · 16,525 passengers
94.2%
Load
September 2025
71 departures · 9,428 passengers
74.2%
Load
October 2025
124 departures · 17,384 passengers
78.3%
Load
November 2025
120 departures · 18,095 passengers
84.2%
Load
December 2025
179 departures · 25,863 passengers
80.7%
Load
January 2026
142 departures · 20,608 passengers
81.6%
Load
February 2026
113 departures · 17,166 passengers
85.2%
Load
March 2026
123 departures · 17,379 passengers
78.3%
Load
April 2026
120 departures · 18,093 passengers
84.2%
Load
May 2026
124 departures · 19,477 passengers
87.8%
Load
By direction
Each direction is filed separately — they rarely match.
CUN → IAD
90.6% full
62 departures · 10,052 passengers
IAD → CUN
84.9% full
62 departures · 9,425 passengers
Nonstop CUN–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
Cancún
MX
Cancún International Airport
Coordinates
21.04°N, 86.87°W
Hemisphere
N · W
Frequently asked
How far is Cancún (CUN) from Dulles (IAD)?
CUN to IAD is 1,357 miles (2,184 km / 1,180 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from CUN to IAD?
A nonstop covers the 1,357-mile great-circle distance in roughly 3h 31m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies CUN–IAD?
In May 2026, the Boeing 737 MAX 9 flew the largest share of departures (73.4%), followed by the Boeing 737-900ER (26.6%).
What mileage do I earn flying CUN–IAD?
Distance-based programs credit off the 1,357-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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