What’s the cost of a flight from Chicago O'Hare to Saint Mary's?

Prices vary based on date, airline, and availability. Compare several options if you're flying between Chicago and Saint Marys.

Choose a date to explore the best fares now.

If possible, avoid holiday periods: ticket prices tend to rise quickly and availability drops, especially on busy routes. Morning and evening flights are often in high demand too — book early to get a good fare.

Best airport options between Chicago and Saint Marys

If you're open to flying into or out of more than one airport, you’ll have more routes to compare.

• Airports in Chicago: Chicago is served by 3 airports - Midway, O'Hare, Rockford.
• Airports in Saint Marys: Saint Marys - Saint Mary's is the sole airport currently available.

Some airports offer extras like lounges, fast track, or self check-in — good to keep in mind. Comparing airports by services offered helps you balance cost and comfort.

Filter and compare flights from Chicago O'Hare to Saint Mary's

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Other popular destinations

Want more ideas for your trip to United States? Check these: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Advanced filters help you skip long layovers or inconvenient times. The “airlines” filter is handy if you want to collect miles or prefer a certain onboard experience.