Find the Cheapest Flights from Chicago to Portugal

Unlock the cheapest flights and the best airfares from Chicago to Portugal. Make your dream trip both memorable and affordable!

Mon, Sep 14CHI-LIS
Icelandair

oneway$378

Mon, Jul 6CHI-FAO
United Airlines

$700

Thu, Oct 22CHI-PDL
TAP Portugal

$878

Mon, Jun 8CHI-LIS
Air Canada

$953

Chicago to Portugal: Flight information

Cheapest flight found$378

Cheapest month to flySeptember

Most popular airlineIcelandair

Average flight duration19h 40m

Cheapest flight found

Sep 2026

$378

May 2026

$643

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