Cheap Flights from Marathon (MTH) to St. Thomas (STT)

Popular airlines from Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Frequently asked questions

How much does a flight from Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT) cost?
Grab a cheap one-way flight or cheap return flight from Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT)?
Flying in may help you find better deals, as it's the cheapest month for flights between MTH and STT. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT)?
To find the cheapest airline flying from MTH to STT, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT)?
Direct flights from Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from MTH to STT?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can change depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT)?
To avoid possible delays on the Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT) route, aim to travel before 3 PM. Later flights have a 22% higher chance of being 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 Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT) last-minute?
Last-minute bookings from MTH to STT are usually more expensive. To lock in the cheapest rates, start searching for flights early. That said, if you're flexible with your travel dates, you may find a cheap fare just before your departure.
Is it cheaper to book a MTH to STT flight and hotel package?
Compared with arranging hotels and flights separately, booking a MTH to STT flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place takes the hassle out of travel planning. Just pick your flights and select from our extensive range of hotels, then personalize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Marathon, FL (MTH-Florida Keys Marathon) to Cyril E. King Airport (STT)?
If you reserved your MTH to STT flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

Travel information

Origin airport
Florida Keys Marathon
Destination airport
Cyril E. King
Distance
1122 mi

Book with confidence

Marathon to St. Thomas Flights

The cheapest times to fly from Marathon to St. Thomas

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

 

The best time to book a flight from Marathon to St. Thomas

Sunday is one of the best days to book for cheap flights from Marathon to St. Thomas: 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 Marathon to St. Thomas

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 Marathon to St. Thomas 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 Marathon to St. Thomas 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 Marathon to St. Thomas 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.

 

Marathon to St. Thomas Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

Explore a world of travel with Expedia