Cheapest return BWI–OPO flights, June

AirHint found the following cheapest return flights from Baltimore (BWI) to Porto (OPO) in June 2026 (see full year).

Return flights

29 Jun - 13 Jul Icelandair
28 Jun - 12 Jul Icelandair
10 Jun - 17 Jun Icelandair
09 Jun - 16 Jun Delta
23 Jun - 07 Jul Delta
30 Jun - 14 Jul Delta
24 Jun - 08 Jul Delta
22 Jun - 09 Jul Delta
12 Jun - 19 Jun Frontier Airlines
15 Jun - 20 Jun Icelandair
15 Jun - 22 Jun Delta
16 Jun - 30 Jun Delta
17 Jun - 01 Jul Delta
15 Jun - 29 Jun Delta
22 Jun - 06 Jul Delta
20 Jun - 29 Jun Icelandair
18 Jun - 02 Jul Spirit Airlines
05 Jun - 14 Jun Delta
21 Jun - 05 Jul Spirit Airlines
04 Jun - 14 Jun Icelandair

Also check the deals for one-way flights from Baltimore to Porto in June.

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