Cheap Flights from Seattle (SEA) to Marathon (MTH)

Popular airlines from Seattle-Tacoma International Airport (SEA) to Marathon, FL (MTH-Florida Keys Marathon)

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Marathon, FL (MTH-Florida Keys Marathon) cost?
Grab a cheap one-way flight or cheap return flight from Seattle - Tacoma Intl. Airport (SEA) 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 Seattle - Tacoma Intl. Airport (SEA) to Marathon, FL (MTH-Florida Keys Marathon)?
is the most affordable month to fly from SEA to MTH. Planning your trip for the off-season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Marathon, FL (MTH-Florida Keys Marathon)?
To find the cheapest airline flying from SEA to MTH, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Marathon, FL (MTH-Florida Keys Marathon)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) 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 our filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to MTH?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a range of 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 Seattle - Tacoma Intl. Airport (SEA) to Marathon, FL (MTH-Florida Keys Marathon)?
To touch down at Marathon, FL (MTH-Florida Keys Marathon) on schedule, book a flight that leaves Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Seattle - Tacoma Intl. Airport (SEA) to Marathon, FL (MTH-Florida Keys Marathon) last-minute?
Holding off until just before your trip to book a ticket from SEA to MTH often results in higher prices. While you may come across some last-minute discounts, they're not always guaranteed. Keep your travel plans flexible for a better chance of scoring a bargain.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Marathon, FL (MTH-Florida Keys Marathon)?
Typically, it's possible to reschedule or cancel your SEA to MTH flight. However, if it's been more than 24 hours since booking, 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 details on our Customer Service portal.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Florida Keys Marathon
Distance
2739 mi

Book with confidence

Seattle to Marathon Flights

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

 

The best time to book a flight from Seattle to Marathon

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

 

Seattle to Marathon Flights

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*Available to One Key members.