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 July 2026, United Airlines operated the most departures, one of 2 carriers flying nonstop CUN–IAD; the Boeing 737 MAX 9 was the most common aircraft at 72% of departures; flights ran 96% full.
Departures
127
July 2026
Seats
22,748
both directions
Passengers
21,904
both directions
Load factor
96.3%
RPM ÷ ASM
Who flies CUN–IAD?
United Airlines operated the most nonstop CUN–IAD departures in July 2026 (126), one of 2 carriers on the route.
- UA
126 departures · 22,554 seats
Share of departures99.2%96.3%
Load
- DL
1 departures · 194 seats
Share of departures0.8%97.4%
Load
What plane flies CUN–IAD?
In July 2026, the Boeing 737 MAX 9 flew 72% of CUN–IAD departures — more than any other aircraft type.
- Boeing 737 MAX 9
92 departures · 96.5% load
72.4% - Boeing 737-900ER
34 departures · 95.7% load
26.8% - Airbus A321neo
1 departures · 97.4% load
0.8%
How has CUN–IAD traffic changed?
Nonstop CUN–IAD departures rose from 98 in August 2025 to 127 in July 2026.
Monthly nonstop CUN–IAD traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
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
June 2026
120 departures · 19,595 passengers
91.2%
Load
July 2026
127 departures · 21,904 passengers
96.3%
Load
By direction
Each direction is filed separately — they rarely match.
CUN → IAD
95.8% full
64 departures · 10,994 passengers
IAD → CUN
96.8% full
63 departures · 10,910 passengers
Nonstop CUN–IAD 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
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 July 2026, the Boeing 737 MAX 9 flew the largest share of departures (72.4%), followed by the Boeing 737-900ER (26.8%).
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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