Cheap Flights from Chicago (ORD) to St. Marys (STQ)

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to St. Marys, PA (STQ-St. Marys Municipal)

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Flights from Chicago (ORD) to St. Marys (STQ)
Origin airport
O'Hare Intl.
Destination airport
St. Marys Municipal
Distance
486 mi

Chicago to St. Marys Flights

The cheapest times to fly from Chicago to St. Marys

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to St. Marys are during the month of . You can find some of the cheapest flights from Chicago to St. Marys with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to St. Marys

Sunday is one of the best days to book for cheap flights from Chicago to St. Marys: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to St. Marys

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to St. Marys in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to St. Marys flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to St. Marys airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to St. Marys Municipal Airport (STQ) cost?
Grab a cheap one-way flight or cheap return flight from O'Hare Intl. Airport (ORD) to St. Marys Municipal Airport (STQ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to St. Marys Municipal Airport (STQ)?
is the cheapest month to fly from ORD to STQ. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to St. Marys Municipal Airport (STQ)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest ORD to STQ flight.
How many flights per day from O'Hare Intl. Airport (ORD) to St. Marys Municipal Airport (STQ)?
There aren't any daily nonstop flights from O'Hare Intl. Airport (ORD) to St. Marys Municipal Airport (STQ). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from ORD to STQ?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from O'Hare Intl. Airport (ORD) to St. Marys Municipal Airport (STQ)?
To land at St. Marys Municipal Airport (STQ) without delays, choose a flight that leaves from O'Hare Intl. Airport (ORD) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for St. Marys from O'Hare Intl. Airport (ORD)?
If you're taking a direct flight from O'Hare Intl. Airport (ORD) to St. Marys, University Park Airport (SCE) is the only airport you can land at.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to St. Marys Municipal Airport (STQ) last-minute?
Booking your plane ticket from ORD to STQ just before your journey is generally more expensive. However, if there's some wiggle room with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book an ORD to STQ flight and hotel package?
Booking an ORD to STQ flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Choose from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to St. Marys Municipal Airport (STQ)?
In most cases, you can cancel or modify your ORD to STQ flight. However, additional charges may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you want further details, head to our Customer Service portal.

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