Cheapest return flights from Washington to Porto in March from 387€

AirHint found the following cheapest return flights from Washington (DCA) to Porto (OPO) in March 2026 (see full year).

Return flights

24 Mar - 31 Mar Air Canada
03 Mar - 10 Mar Iberia
04 Mar - 11 Mar Iberia
10 Mar - 17 Mar Iberia
11 Mar - 18 Mar Iberia
09 Mar - 16 Mar Iberia
01 Mar - 08 Mar Iberia
02 Mar - 09 Mar United
05 Mar - 12 Mar United
16 Mar - 23 Mar Iberia
25 Mar - 01 Apr Air Canada
31 Mar - 07 Apr Air Canada
26 Mar - 02 Apr jetBlue
30 Mar - 06 Apr KLM
29 Mar - 05 Apr jetBlue
28 Mar - 04 Apr Air Canada
27 Mar - 03 Apr jetBlue

Also check the deals for one-way flights from Washington to Porto in March.

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