Cheapest return flights from Chicago to Porto in January from 408€

AirHint found the following cheapest return flights from Chicago (MDW) to Porto (OPO) in January 2026 (see full year).

Return flights

28 Jan - 04 Feb KLM
21 Jan - 28 Jan KLM
27 Jan - 03 Feb KLM
20 Jan - 27 Jan KLM
07 Jan - 14 Jan Delta
11 Jan - 18 Jan KLM
30 Jan - 06 Feb KLM
09 Jan - 16 Jan KLM
19 Jan - 26 Jan KLM
23 Jan - 30 Jan KLM
26 Jan - 02 Feb Air France
15 Jan - 22 Jan KLM
29 Jan - 05 Feb KLM
18 Jan - 25 Jan Delta
22 Jan - 29 Jan Delta
25 Jan - 01 Feb Delta
31 Jan - 07 Feb KLM

Also check the deals for one-way flights from Chicago to Porto in January.

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