# Flights from Porto (OPO) to Montreal (YUL)

1 direct, 46 routes with 1 stop, 4593 with 2 stops. Straight-line distance 5138 km.

## Direct

Air Transat, Air Canada flies direct, about 5151 km.

## Shortest routes

- OPO → YUL · 5151 km · about 470 min · 0 stops
- OPO → BOS → YUL · 5469 km · about 635 min · 1 stop
- OPO → LIS → YUL · 5526 km · about 618 min · 1 stop
- OPO → PDL → YUL · 5546 km · about 590 min · 1 stop
- OPO → EWR → YUL · 5906 km · about 686 min · 1 stop
- OPO → MAD → YUL · 6005 km · about 650 min · 1 stop
- OPO → PHL → YUL · 6127 km · about 710 min · 1 stop
- OPO → DUB → YUL · 6153 km · about 620 min · 1 stop

## How to query this

- JSON: https://travel.buy-it.gr/api/v1/routes/OPO/YUL
- This page: https://travel.buy-it.gr/api/v1/routes/OPO/YUL.md
- HTML, English: https://travel.buy-it.gr/en/flights/OPO-YUL
- All routes: https://travel.buy-it.gr/api/search?from=OPO&to=YUL&maxStops=2
- Operating days for one leg: https://travel.buy-it.gr/api/leg?from=OPO&to=YUL
- Price a path on one date: https://travel.buy-it.gr/api/price?path=OPO,YUL&date=2026-10-10

Replace airport codes in any of those URLs. `path` is comma-separated IATA codes, 2 to 5 airports. `date` is YYYY-MM-DD. `carriers` is optional, legs joined by `|` and airlines inside a leg joined by `.`, for example `FR|LO`.

The first flight must leave on `date`. Each following flight may leave that same day or the next day, and must depart at least 90 minutes after the previous flight lands. A response with `partial: true` on a calendar lists days a source has seen. It does not prove the other days are empty.

No API key. Responses are JSON unless the URL ends in `.md`. Prices are euros. `total: null` means no fare was found for the first flight on that date.