AirHint found the following cheapest return flights from Ottawa (YOW) to Lisbon (LIS) in April 2026 (see full year).
Return flights
| 06 Apr - 21 Apr | Air Canada | ||
| 14 Apr - 29 Apr | Air Canada | ||
| 06 Apr - 22 Apr | Air Canada | ||
| 02 Apr - 06 Apr | Lufthansa |
Also check the deals for one-way flights from Ottawa to Lisbon in April.
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