What is the cheapest month to fly from Boston to Porto?

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Boston (BOS) to Porto (OPO), with fares starting from $396.

What is the lowest current fare from BOS to OPO?

The lowest currently-listed fare from Boston (BOS) to Porto (OPO) is $396 on 2026-05-27.

Direct flights from BOS to OPO cover approximately 5,049 km (3,137 miles), with an estimated flight time of 5h 56m. Operating airlines: TP.

Cheapest current fares: $396 in May 2026, 5,049 km direct flight in ~5h 56m.

Last updated May 25, 2026 · By Flightmaps Editorial

Lowest available fare per calendar month from Boston (BOS) to Porto (OPO). Refreshed daily.

What is the cheapest month to fly from Boston to Porto?

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Boston (BOS) to Porto (OPO), with fares starting from $396.
What is the lowest current fare from BOS to OPO?

The lowest currently-listed fare from Boston (BOS) to Porto (OPO) is $396 on 2026-05-27.
How long is the flight from Boston to Porto?

Direct flights from BOS to OPO cover approximately 5,049 km (3,137 miles), with an estimated flight time of 5h 56m. Operating airlines: TP.

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