Cheap Flights from Jacksonville (JAX) to Marathon (MTH)

Popular airlines from Jacksonville International Airport (JAX) to Marathon, FL (MTH-Florida Keys Marathon)

Frequently asked questions

How much does a flight from Jacksonville Intl. Airport (JAX) to Marathon, FL (MTH-Florida Keys Marathon) cost?
Snag a cheap one-way flight or cheap return flight from Jacksonville Intl. Airport (JAX) 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 Jacksonville Intl. Airport (JAX) to Marathon, FL (MTH-Florida Keys Marathon)?
Traveling in may help you find better deals, as it's the cheapest month for flights between JAX and MTH. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Jacksonville Intl. Airport (JAX) to Marathon, FL (MTH-Florida Keys Marathon)?
To find the cheapest airline flying from JAX to MTH, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Jacksonville Intl. Airport (JAX) to Marathon, FL (MTH-Florida Keys Marathon)?
Direct flights from Jacksonville Intl. Airport (JAX) to Marathon, FL (MTH-Florida Keys Marathon) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from JAX to MTH?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Jacksonville Intl. Airport (JAX) to Marathon, FL (MTH-Florida Keys Marathon)?
Book a flight from Jacksonville Intl. Airport (JAX) to Marathon, FL (MTH-Florida Keys Marathon) that leaves before 3 PM to reduce the risk of delays and cancellations. Later departures are on average 22% more likely to be canceled.**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 Jacksonville Intl. Airport (JAX) to Marathon, FL (MTH-Florida Keys Marathon) last-minute?
Holding off until just before your departure to book your flight from JAX to MTH often results in higher prices. While it's possible to find some last-minute offers, there's no guarantee. Allow some flexibility in your schedule for a better chance of snagging a bargain.
Can I cancel or change the date of my flight from Jacksonville Intl. Airport (JAX) to Marathon, FL (MTH-Florida Keys Marathon)?
In most cases, you can reschedule or cancel your JAX to MTH flight. However, additional fees 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 more details, visit our Customer Service portal.

Travel information

Origin airport
Jacksonville Intl.
Destination airport
Florida Keys Marathon
Distance
400 mi

Book with confidence

Jacksonville to Marathon Flights

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

 

The best time to book a flight from Jacksonville to Marathon

Sunday is one of the best days to book for cheap flights from Jacksonville 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 Jacksonville 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 Jacksonville 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 Jacksonville 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 Jacksonville 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.

 

Jacksonville to Marathon Flights

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*Available to One Key members.