4 hr 15 min is the shortest flight time from Cancún to Boston.

The cheapest days to fly are usually in September. Typical prices range from $165 to $245.

The best round-trip deal recently found on Google Flights from Cancún to Boston was with JetBlue from $214. The best one-way deal was with JetBlue from $138.

There are direct flights from Cancún to Boston on a daily basis.

JetBlue, Delta and American fly direct from Cancún to Boston.

The cheapest round-trip flight from Cancún to Boston starts at $214 from Thu, Sep 12 to Wed, Sep 18. The cheapest one-way flight starts at $138 and departs on Wed, Sep 11.

Boston is a year-round destination with a 4-season climate. Spring and fall feature generally mild weather, although snow sometimes falls in early spring (Apr). Summer can be humid. Foliage season (mid-Sep–Nov) attracts the largest crowds. Patriots Day (3rd Mon of Apr) commemorates the start of the Revolutionary War and coincides with the famed Boston Marathon. Summer festivals include Boston Harborfest, the city’s weeklong 4th of July party, and Italian-American celebrations in the North End (late Jul–Aug).

It's easy to use Google Flights to find the cheapest days to fly from Cancún to Boston.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.