Cheapest return flights from Baltimore (BWI) to Porto (OPO), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
22 Sep 29 Sep Icelandair
08 Sep 15 Sep Icelandair
16 Sep 23 Sep Icelandair
19 Sep 26 Sep Icelandair
12 Sep 19 Sep Icelandair
09 Sep 16 Sep Icelandair
06 Sep 13 Sep Icelandair
02 Sep 09 Sep Icelandair
13 Sep 20 Sep Icelandair
14 Sep 21 Sep Icelandair
30 Sep 07 Oct Delta
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deals for one-way flights from Baltimore to Porto in September.

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Updated Jul 11, 2026.

About these fares

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