Boston (BOS) to Cancún (CUN)
Flight time
≈ 4h 16m
Bearing
217° SW
Boston (BOS) to Cancún (CUN) is 1,737 miles (2,795 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BOS–CUN
Filed traffic dataIn July 2026, Delta Air Lines operated the most departures, one of 2 carriers flying nonstop BOS–CUN; the Boeing 737-800 was the most common aircraft at 51% of departures; flights ran 95% full.
Departures
122
July 2026
Seats
18,646
both directions
Passengers
17,692
both directions
Load factor
94.9%
RPM ÷ ASM
Who flies BOS–CUN?
Delta Air Lines operated the most nonstop BOS–CUN departures in July 2026 (62), one of 2 carriers on the route.
- DL
62 departures · 9,916 seats
Share of departures50.8%94.7%
Load
- B6
60 departures · 8,730 seats
Share of departures49.2%95.1%
Load
What plane flies BOS–CUN?
In July 2026, the Boeing 737-800 flew 51% of BOS–CUN departures — more than any other aircraft type.
- Boeing 737-800
62 departures · 94.7% load
50.8% - Airbus A220-300
45 departures · 94.6% load
36.9% - Airbus A320
15 departures · 96.3% load
12.3%
How has BOS–CUN traffic changed?
Nonstop BOS–CUN departures fell from 126 in August 2025 to 122 in July 2026.
Monthly nonstop BOS–CUN traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
126 departures · 21,018 passengers
93.6%
Load
September 2025
55 departures · 8,125 passengers
75.9%
Load
October 2025
70 departures · 12,230 passengers
89.4%
Load
November 2025
136 departures · 21,842 passengers
84.9%
Load
December 2025
226 departures · 33,823 passengers
79.5%
Load
January 2026
182 departures · 30,232 passengers
86.8%
Load
February 2026
165 departures · 27,520 passengers
89.6%
Load
March 2026
197 departures · 29,943 passengers
80.2%
Load
April 2026
203 departures · 30,519 passengers
80.5%
Load
May 2026
136 departures · 19,799 passengers
80.4%
Load
June 2026
120 departures · 16,185 passengers
80.6%
Load
July 2026
122 departures · 17,692 passengers
94.9%
Load
By direction
Each direction is filed separately — they rarely match.
BOS → CUN
95.8% full
62 departures · 9,079 passengers
CUN → BOS
93.9% full
60 departures · 8,613 passengers
Nonstop BOS–CUN 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 Boston (BOS) from Cancún (CUN)?
BOS to CUN is 1,737 miles (2,795 km / 1,509 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BOS to CUN?
A nonstop covers the 1,737-mile great-circle distance in roughly 4h 16m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BOS–CUN?
In July 2026, the Boeing 737-800 flew the largest share of departures (50.8%), followed by the Airbus A220-300 (36.9%).
What mileage do I earn flying BOS–CUN?
Distance-based programs credit off the 1,737-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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