Cheapest one-way flights from Madrid to Boston in May from $322

AirHint found the following cheapest one-way flights from Madrid (MAD) to Boston (BOS) in May 2026 (see full year).

One-Way flights

11 May Iberia
22 May Iberia
15 May Iberia
11 May Finnair direct
05 May Iberia direct
14 May Iberia direct
28 May Iberia direct
25 May Iberia direct
27 May Iberia direct
12 May Iberia direct

Also check the deals for return flights from Madrid to Boston in May.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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