Exceptional1 stop · 17.5h
BOS to BKKThailand
Bangkok
$506
usually $1,140
−56%
Most monthly lows $915–$1,187. Cheaper than every other month on record (5).
- Travel dates
- 7 Mar '27 – 17 Apr '27 · 41 nights
- Airline
Turkish Airlines· $18 per 1,000 km
Flights · BOS → CUN
Boston to Cancún
Best fare, round trip
$357
−18%
below its usual $435
you keep $78
Found
- Depart
- Mon 2 Nov
- Return
- Wed 11 Nov
- Stay
- 9 nights
- Flight
- 1 stop · 5h
- Airline
Aeroméxico
Most of this route’s monthly lows fall between $385 and $436. The drop beats 50% of measured fares on the board, over 4 observed months.
Cached fare — the booking search re-prices live before you pay.
MexicoCancúnCaribbean blue, Mayan ruins, cenotes — the highest deal-frequency beach route in the Americas.Best windowDec–AprAirportsCancún (CUN)Every route into CancúnFare seasonality
When this route gets cheap.
Fares bottom out in November around $328 and peak in February near $436, 33% dearer, across the 4 months we track. The cheapest itinerary we are tracking makes one stop and takes about 5 hours outbound, on a 9-night trip — ticketed under Aeroméxico, which on a connecting fare need not operate every leg. At $357 for 2,779 km each way, that works out to about $64 per 1,000 km flown. That is above the $43 per 1,000 km typical of medium-haul fares here. Across the 6 departure cities we track at a similar distance from Cancún, this fare ranks 4th — 29% above the $276 from Toronto. That puts it in the cheaper half of the 7 routes of similar length we watch out of Boston, where the middle fare is $357. The best time to be in Cancún: Dec–Apr.
The 5 days we hold a cached fare for
Press a date to compare its fares
The median cached fare across this calendar is 22% higher than when tracking began on 8 Aug — $455 then versus $557 now, across 20 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $321, on 16 Nov.
These are the only days we have a cached price for on this route so far — not the only days it flies. The search above covers any date.
Cached fares · checked 15 Oct 2026
Cheapest in Nov, around $328
25% below the $435 typical fare
$328Nov, the cheapest month. Compare November fares.$436Dec, around the usual price. Compare December fares.$385Jan ’27, below the usual price. Compare January fares.$436Feb, around the usual price. Compare February fares.
CheapestBelow usualUsualAbove usualPress a month to compare its fares
Cheapest round-trip fare found each month, Boston to Cancún, from cached prices.
Route facts
- Airports
- Logan (BOS) ↔ Cancún (CUN)
- Flight time
- ≈5 hours outbound
- Distance
- ≈2,779 km each way
- Typical price
- $435 round-trip (seasonal median)
- Airlines on the board
- Aeroméxico
- Itineraries
- Connections on current fares
- Best months to visit
- Dec–Apr
Good to know
BOS → CUN, answered.
Is $357 a good price for Boston to Cancún?
Only slightly. The seasonal median is around $435 round-trip and this fare is 18% under it. We do not call a drop notable until 20%, so this is an ordinary price for the route rather than a reason to hurry.
What is the cheapest month to fly from Boston to Cancún?
Across 4 months of cached-fare history, Nov comes out cheapest on this route. The best months to actually be in Cancún are Dec–Apr — when those overlap, that's your window.
How far in advance should I book BOS → Cancún?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. What we can measure is which month is cheap: across 4 months of cached fares, Nov comes out lowest on this route. Our guide Why flight prices change covers what does move a fare.
Are there nonstop flights from Boston to Cancún?
The current cheapest fares involve a connection, ticketed under Aeroméxico. We hold no nonstop fare on this route right now, which does not mean none flies — search your exact dates to see what does.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on 17 October). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Cancún?
Lock the flight first — then compare stays for 2–11 Nov · 9 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next BOS → CUN drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
Related routes on the board.
Rare1 stop · 17h
BOS to TYOJapan
Tokyo
$910
usually $1,730
−47%
Most monthly lows $1,262–$1,730. Cheaper than every other month on record (3).
GreatNonstop · 8.5h
BOS to ISTTürkiye
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$518
usually $800
−35%
Most monthly lows $760–$892. Cheaper than every other month on record (8).
RareNonstop · 11h
LON to CUNUnited Kingdom
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$479
usually $860
−44%
Most monthly lows $718–$886. Cheaper than every other month on record (7).
Rare1 stop · 5h
DFW to CUNUnited States
Dallas
$228
usually $380
−40%
Most monthly lows $335–$380. Cheaper than every other month on record (3).
Good1 stop · 10.5h
SAO to CUNBrazil
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$450
usually $630
−29%
Most monthly lows $540–$661. Cheaper than every other month on record (7).
