How much is a flight from Saint Mary's to Chicago O'Hare?

There’s no fixed price — fares between Saint Marys and Chicago can vary a lot by day or time.

Pick a travel date to see today’s available fares.

Flying during the week can be more affordable, as weekend flights tend to be pricier. Also consider demand and availability: the last remaining seats often come at higher fares!

Which departure and arrival airports are available?

Between Saint Marys and Chicago, flight options may depend on the combination of airports available.

• Airports in Saint Marys: Only Saint Marys - Saint Mary's is currently in operation.
• Airports in Chicago: Chicago is served by 3 airports - Midway, O'Hare, Rockford.

Sometimes flying into a nearby city can be more cost-effective. When a city has multiple airports, it’s worth comparing different flight combinations.

Adjust your flight filters for Saint Mary's – Chicago O'Hare

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Other popular destinations

Planning a trip to United States? These cities are popular too: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Sorting options let you see the most affordable flights first. Some results may include extra fees shown only at checkout — always read carefully to see what’s included.