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Montreal to Cancun flights in December 2026 from C$289 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$537 (US$377) with WestJet, 30 Dec – 11 Jan 2027, found 3 days ago. The cheapest one-way found recently is C$289 (US$203) with WestJet, 5 Dec, found 2 days ago.

Return

In December 2026, the cheapest return fare on each of 14 departure dates is usually C$533 (US$374) to C$774 (US$543). Across all 31 departure dates we hold on this route, it is usually C$520 (US$365) to C$672 (US$472). Of the 3 months with enough return fares to compare, December 2026 is usually the most expensive.

Cheapest return found recently

C$537 (US$377)

30 Dec – 11 Jan 2027 · WestJet

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

out 1 stop, back 1 stop

found 3 days ago

See prices for these datesCheck today's price

Cheapest we hold, of any age

C$509 (US$357)

3 Dec – 17 Dec · United Airlines

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

out 2 stops, back nonstop

found 6 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
3 Dec – 17 DecC$509 (US$357)United Airlinesout 2 stops, back nonstopfound 6 days agoSee prices for these dates
14 Dec – 19 DecC$514 (US$361)Air Canadaout 1 stop, back nonstopfound 8 days agoSee prices for these dates
13 Dec – 19 DecC$526 (US$369)Air Canadaout nonstop, back nonstopfound 7 days agoSee prices for these dates
12 Dec – 19 DecC$532 (US$373)WestJetout 1 stop, back nonstopfound 7 days agoSee prices for these dates
30 Dec – 11 Jan 2027C$537 (US$377)WestJetout 1 stop, back 1 stopfound 3 days agoSee prices for these dates

Every date we hold

14 departure dates

3 Dec – 17 Dec: C$509 (US$357), found 6 days ago12 Dec – 19 Dec: C$532 (US$373), found 7 days ago13 Dec – 19 Dec: C$526 (US$369), found 7 days ago14 Dec – 19 Dec: C$514 (US$361), found 8 days ago15 Dec – 7 Jan 2027: C$607 (US$426), found 7 days ago16 Dec – 7 Jan 2027: C$691 (US$485), found 7 days ago18 Dec – 28 Dec: C$909 (US$638), found 5 days ago19 Dec – 29 Dec: C$780 (US$547), found 5 days ago20 Dec – 30 Dec: C$847 (US$594), found 5 days ago21 Dec – 26 Dec: C$737 (US$517), found 3 days ago22 Dec – 26 Dec: C$757 (US$531), found 3 days ago25 Dec – 3 Jan 2027: C$1,076 (US$755), found 6 days ago28 Dec – 11 Jan 2027: C$641 (US$450), found 7 days ago30 Dec – 11 Jan 2027: C$537 (US$377), found 3 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
3 Dec – 17 DecC$509 (US$357)United AirlinesMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 2 stops, back nonstopfound 6 days agoSee prices for these dates
12 Dec – 19 DecC$532 (US$373)WestJetMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back nonstopfound 7 days agoSee prices for these dates
13 Dec – 19 DecC$526 (US$369)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out nonstop, back nonstopfound 7 days agoSee prices for these dates
14 Dec – 19 DecC$514 (US$361)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back nonstopfound 8 days agoSee prices for these dates
15 Dec – 7 Jan 2027C$607 (US$426)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
16 Dec – 7 Jan 2027C$691 (US$485)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
18 Dec – 28 DecC$909 (US$638)WestJetMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back nonstopfound 5 days agoSee prices for these dates
19 Dec – 29 DecC$780 (US$547)American AirlinesMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
20 Dec – 30 DecC$847 (US$594)American AirlinesMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back nonstopfound 5 days agoSee prices for these dates
21 Dec – 26 DecC$737 (US$517)WestJetMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
22 Dec – 26 DecC$757 (US$531)WestJetMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back nonstopfound 3 days agoSee prices for these dates
25 Dec – 3 Jan 2027C$1,076 (US$755)Air CanadaMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
28 Dec – 11 Jan 2027C$641 (US$450)WestJetMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
30 Dec – 11 Jan 2027C$537 (US$377)WestJetMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates

Which month looks cheapest?

January 2027 is the cheapest month — from C$392 (US$275).

November 2026From C$572 (US$401)2 departure dates20 Nov – 26 Nov · found 3 days agoSee prices for these dates
December 2026From C$509 (US$357)14 departure dates3 Dec – 17 Dec · found 6 days agoSee prices for these dates
January 2027From C$392 (US$275)Cheapest seen7 departure dates31 Jan 2027 – 6 Feb 2027 · found yesterdaySee prices for these datesEvery date in January 2027
February 2027From C$459 (US$322)7 departure dates10 Feb 2027 – 17 Feb 2027 · found 3 days agoSee prices for these datesEvery date in February 2027
June 2027From C$653 (US$458)1 departure date24 Jun 2027 – 3 Jul 2027 · found 4 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 7 departure dates is usually C$343 (US$241) to C$488 (US$343). Across all 9 departure dates we hold on this route, it is usually C$331 (US$232) to C$489 (US$343).

Cheapest one-way found recently

C$289 (US$203)

5 Dec · WestJet

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

1 stop

found 2 days ago

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
5 DecC$289 (US$203)WestJet1 stopfound 2 days agoOpen this trip
3 DecC$331 (US$232)United Airlines2 stopsfound 6 days agoOpen this trip
30 DecC$355 (US$249)WestJet1 stopfound 7 days agoOpen this trip
23 DecC$445 (US$312)Porter Airlines Canada1 stopfound 7 days agoOpen this trip
19 DecC$488 (US$342)American Airlines1 stopfound 6 days agoOpen this trip

Every date we hold

7 departure dates

3 Dec: C$331 (US$232), found 6 days ago5 Dec: C$289 (US$203), found 2 days ago17 Dec: C$489 (US$343), found 2 days ago19 Dec: C$488 (US$342), found 6 days ago23 Dec: C$445 (US$312), found 7 days ago27 Dec: C$527 (US$370), found 7 days ago30 Dec: C$355 (US$249), found 7 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
3 DecC$331 (US$232)United AirlinesMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)2 stopsfound 6 days agoOpen this trip
5 DecC$289 (US$203)WestJetMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)1 stopfound 2 days agoOpen this trip
17 DecC$489 (US$343)Porter Airlines CanadaSt. Hubert Airport (YHU) → Cancun International Airport (CUN)2 stopsfound 2 days agoOpen this trip
19 DecC$488 (US$342)American AirlinesMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)1 stopfound 6 days agoOpen this trip
23 DecC$445 (US$312)Porter Airlines CanadaSt. Hubert Airport (YHU) → Cancun International Airport (CUN)1 stopfound 7 days agoOpen this trip
27 DecC$527 (US$370)Porter Airlines CanadaSt. Hubert Airport (YHU) → Cancun International Airport (CUN)1 stopfound 7 days agoOpen this trip
30 DecC$355 (US$249)WestJetMontreal-Pierre Elliott Trudeau International Airport (YUL) → Cancun International Airport (CUN)1 stopfound 7 days agoOpen this trip

Which month looks cheapest?

February 2027 is the cheapest month — from C$232 (US$163).

November 2026From C$503 (US$353)1 departure date25 Nov · found 2 days agoOpen this trip
December 2026From C$289 (US$203)7 departure dates5 Dec · found 2 days agoOpen this trip
February 2027From C$232 (US$163)Cheapest seen1 departure date22 Feb 2027 · found 4 days agoOpen this tripEvery date in February 2027

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 2026-11-12, US dollars in brackets. Fares change, so check today's price before you book. How our prices work