Find cheap flights from Porto Alegre to Chicago from $520

In the last 3 days, the lowest price for a flight from Porto Alegre to Chicago O'Hare Intl Airport was $520 for a one-way ticket and $1,008 for a round-trip.

Yes, you'll most likely have to show a valid passport before boarding the plane in Porto Alegre and on arrival in Chicago.

We unfortunately don’t have that data for this specific route.

oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Porto Alegre and Chicago, with Star Alliance being the most commonly used for this route.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Porto Alegre to Chicago.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Porto Alegre is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to Porto Alegre with another airline. Booking your flights between Porto Alegre and ORD can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from Porto Alegre up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.