Route brief · LIS → YUL
Lisbon → Montreal
$474
−15% vs typical
seasonal median $560 · difference $86
May 1 '27 – May 15 '27 · 14 nights
Air TransatNonstop
- Usual monthly lows
- $530–$558
- Board rank
- Stronger than 38%
- Route sample
- 4 observed months
Cached fare — the booking search re-prices live before you pay.
Destination briefYULMontrealFrench North America — cheap transatlantic fares in, and a summer festival calendar that never stops.Best windowJun–SepAirportsTrudeau (YUL)All routes into MontrealWhen this route gets cheap.
Cached-fare history: across 4 months, May is the cheapest for LIS → YUL. Best time to be there: Jun–Sep.
Fares bottom out in May around $474 and peak in September near $601 — a $127 spread across the 4 months we track. The cheapest itinerary we are tracking flies Air Transat nonstop and takes about 7.5 hours outbound, on a 14-night trip. At $474 for 5,239 km each way, that works out to about $45 per 1,000 km flown. That is above the $39 typical of medium-haul fares here. Across the 18 departure cities we track at a similar distance from Montreal, this fare ranks 4th — 32% above the $360 from Paris. That puts it in the cheaper half of the 10 routes of similar length we watch out of Lisbon, where the middle fare is $474.
The 2 days we hold a cached fare for
Tap a date → live search
The median cached fare across this calendar is 14% higher than when tracking began on Aug 8 — $507 then versus $580 now, across 3 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 $507, on Sep 16.
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.
Cheapest in May · around $474
15% below the $560 typical fare
Cheapest round-trip fare found per month · Lisbon → Montreal · cached-price history
Route facts
- Airports
- Humberto Delgado (LIS) ↔ Trudeau (YUL)
- Flight time
- ~7.5 hours outbound
- Distance
- ~5,239 km each way
- Typical price
- $560 round-trip (seasonal median)
- Airlines on the board
- Air Transat
- Itineraries
- Nonstop available
- Best months to visit
- Jun–Sep
LIS → YUL, answered.
Is $474 a good price for Lisbon to Montreal?
Only slightly. The seasonal median is around $560 round-trip and this fare is 15% under it, about $86. 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 Lisbon to Montreal?
Across 4 months of cached-fare history, May comes out cheapest on this route. The best months to actually be in Montreal are Jun–Sep — when those overlap, that's your window.
How far in advance should I book LIS → Montreal?
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, May comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from Lisbon to Montreal?
Yes — the current board includes nonstop fares (Air Transat). The outbound leg runs around 7.5 hours.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on September 1). 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 Montreal?
Lock the flight first — then compare stays for May 1 '27 – May 15 '27 · 14 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next LIS → YUL drop reaches you as soon as we find it.
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