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Montreal to Cancun in December 2026 YHU, YUL → CUN

St. Hubert Airport (YHU), Montreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)

For departures in December 2026, the cheapest return found recently is C$686 (US$485) with Air Canada, 20 Dec – 31 Dec, found today. The cheapest one-way found recently is C$432 (US$305) with Porter Airlines Canada, 22 Dec, found yesterday.

Return

In December 2026, the cheapest return fare on each of 8 departure dates is usually C$591 (US$418) to C$773 (US$546). Across all 13 departure dates we hold on this route, it is usually C$568 (US$401) to C$761 (US$538).

Cheapest return found recently

C$686 (US$485)

20 Dec – 31 Dec · Air Canada

Montreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)

out nonstop, back nonstop

found today

See prices for these datesCheck today's price

Cheapest we hold, of any age

C$439 (US$310)

3 Dec – 20 Dec · Air Canada

Montreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)

out nonstop, back nonstop

found 3 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
3 Dec – 20 DecC$439 (US$310)Air Canadaout nonstop, back nonstopfound 3 days agoSee prices for these dates
5 Dec – 11 DecC$568 (US$401)United Airlinesout 2 stops, back 2 stopsfound 5 days agoSee prices for these dates
4 Dec – 7 DecC$599 (US$423)Air Canadaout nonstop, back nonstopfound 5 days agoSee prices for these dates
20 Dec – 31 DecC$686 (US$485)Air Canadaout nonstop, back nonstopfound todaySee prices for these dates
19 Dec – 30 DecC$761 (US$538)Air Canadaout nonstop, back nonstopfound yesterdaySee prices for these dates

Every date we hold

8 departure dates

3 Dec – 20 Dec: C$439 (US$310), found 3 days ago4 Dec – 7 Dec: C$599 (US$423), found 5 days ago5 Dec – 11 Dec: C$568 (US$401), found 5 days ago19 Dec – 30 Dec: C$761 (US$538), found yesterday20 Dec – 31 Dec: C$686 (US$485), found today21 Dec – 31 Dec: C$761 (US$538), found yesterday22 Dec – 31 Dec: C$808 (US$571), found today23 Dec – 26 Dec: C$923 (US$652), found 5 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
3 Dec – 20 DecC$439 (US$310)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out nonstop, back nonstopfound 3 days agoSee prices for these dates
4 Dec – 7 DecC$599 (US$423)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out nonstop, back nonstopfound 5 days agoSee prices for these dates
5 Dec – 11 DecC$568 (US$401)United AirlinesMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 2 stops, back 2 stopsfound 5 days agoSee prices for these dates
19 Dec – 30 DecC$761 (US$538)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out nonstop, back nonstopfound yesterdaySee prices for these dates
20 Dec – 31 DecC$686 (US$485)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out nonstop, back nonstopfound todaySee prices for these dates
21 Dec – 31 DecC$761 (US$538)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back nonstopfound yesterdaySee prices for these dates
22 Dec – 31 DecC$808 (US$571)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back nonstopfound todaySee prices for these dates
23 Dec – 26 DecC$923 (US$652)WestJetMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back nonstopfound 5 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from C$439 (US$310).

October 2026From C$610 (US$431)2 departure dates26 Oct – 2 Nov · found 6 days agoSee prices for these dates
November 2026From C$483 (US$341)2 departure dates19 Nov – 24 Nov · found 6 days agoSee prices for these dates
December 2026From C$439 (US$310)Cheapest seen8 departure dates3 Dec – 20 Dec · found 3 days agoSee prices for these dates
January 2027From C$524 (US$370)1 departure date2 Jan 2027 – 16 Jan 2027 · found 6 days agoSee prices for these dates

One-way

We hold one-way fares on only 2 departure dates in December 2026, too few to say what one usually costs.

Cheapest one-way found recently

C$432 (US$305)

22 Dec · Porter Airlines Canada

Montreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)

1 stop

found yesterday

Open this tripCheck today's price

It is also the cheapest one-way we hold, of any age.

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
22 DecC$432 (US$305)Porter Airlines Canada1 stopfound yesterdayOpen this trip
21 DecC$456 (US$322)WestJet1 stopfound yesterdayOpen this trip

Every date we hold

2 departure dates

21 Dec: C$456 (US$322), found yesterday22 Dec: C$432 (US$305), found yesterdayDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
21 DecC$456 (US$322)WestJetMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)1 stopfound yesterdayOpen this trip
22 DecC$432 (US$305)Porter Airlines CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)1 stopfound yesterdayOpen this trip

Which month looks cheapest?

January 2027 is the cheapest month — from C$386 (US$273).

December 2026From C$432 (US$305)2 departure dates22 Dec · found yesterdayOpen this trip
January 2027From C$386 (US$273)Cheapest seen1 departure date1 Jan 2027 · found yesterdayOpen this trip

Prices are what travelers' searches on Aviasales found in the last 7 days: the price the seller showed on Aviasales; bags may cost extra. Canadian dollars at the Bank of Canada rate of 2026-10-16, US dollars in brackets. Fares change, so check today's price before you book. How our prices work