Cheap Flights from Chicago (ORD) to Marathon (MTH)

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Marathon, FL (MTH-Florida Keys Marathon)

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Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Marathon, FL (MTH-Florida Keys Marathon) cost?
Lock in a cheap one-way flight or cheap return flight from O'Hare Intl. Airport (ORD) to Marathon, FL (MTH-Florida Keys Marathon) 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 Marathon, FL (MTH-Florida Keys Marathon)?
The cheapest month to fly from ORD to MTH is , when demand is low. Off-peak season is typically when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to Marathon, FL (MTH-Florida Keys Marathon)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from ORD to MTH. Then, sort your results by "Price (lowest to highest)" to snap up the best deal available.
How many flights per day from O'Hare Intl. Airport (ORD) to Marathon, FL (MTH-Florida Keys Marathon)?
You'll have to take a flight with a layover when traveling from O'Hare Intl. Airport (ORD) to Marathon, FL (MTH-Florida Keys Marathon). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from ORD to MTH?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary based on various factors, including the time of year and carrier.*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 Marathon, FL (MTH-Florida Keys Marathon)?
To land at Marathon, FL (MTH-Florida Keys Marathon) without delays, pick a flight that leaves 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.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Marathon, FL (MTH-Florida Keys Marathon) last-minute?
Waiting until just before your departure to book a ticket from ORD to MTH generally means paying more. While you might find some last-minute discounts, they're not always guaranteed. Keep your travel schedule open for a better chance of snagging a bargain.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Marathon, FL (MTH-Florida Keys Marathon)?
You can usually cancel or reschedule your ORD to MTH flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
O'Hare Intl.
Destination airport
Florida Keys Marathon
Distance
1254 mi

Book with confidence

Chicago to Marathon Flights

The cheapest times to fly from Chicago to Marathon

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 Marathon are during the month of . You can find some of the cheapest flights from Chicago to Marathon with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Marathon

Sunday is one of the best days to book for cheap flights from Chicago to Marathon: 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 Marathon

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 Marathon in 2025. 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 Marathon 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 Marathon 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.

 

Chicago to Marathon Flights

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*Available to One Key members.