$301 Find cheap flights from Saint John to Chicago

In the last 3 days, the lowest price for a flight from Saint John to Chicago O'Hare Intl Airport was $301 for a one-way ticket and $535 for a round-trip.

Yes, you’ll need a passport to travel to Chicago from Saint John.

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

Star Alliance is the only airline alliance operating flights between Saint John and Chicago.

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 Saint John to Chicago.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Saint John 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 Saint John with another airline. Booking your flights between Saint John 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 Saint John up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.