Lisbon (LIS) to Montreal (YUL) flight deal in economy from $525

Thursday, August 20th, 2026

3 round-trip options

Returning
Tue, Aug 25, 20265 Day Trip
$661 USD
Returning
Wed, Aug 26, 20266 Day Trip
$666 USD
Returning
Sat, Aug 29, 20269 Day Trip
$664 USD