Cheap Flights from Marathon (MTH) to San Diego (SAN)

Popular airlines from Marathon, FL (MTH-Florida Keys Marathon) to San Diego Intl. Airport (SAN)

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Frequently asked questions

How much does a flight from Marathon, FL (MTH-Florida Keys Marathon) to San Diego Intl. Airport (SAN) cost?
Grab a cheap one-way flight or cheap return flight from Marathon, FL (MTH-Florida Keys Marathon) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Marathon, FL (MTH-Florida Keys Marathon) to San Diego Intl. Airport (SAN)?
Planning your getaway for is a great way to save, as it's the cheapest month for flights between MTH and SAN. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Marathon, FL (MTH-Florida Keys Marathon) to San Diego Intl. Airport (SAN)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from MTH to SAN. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Marathon, FL (MTH-Florida Keys Marathon) to San Diego Intl. Airport (SAN)?
There aren't any daily nonstop flights from Marathon, FL (MTH-Florida Keys Marathon) to San Diego Intl. Airport (SAN). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from MTH to SAN?
You'll generally find Tuesday the quietest day for flights, while Fridays are often 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 Marathon, FL (MTH-Florida Keys Marathon) to San Diego Intl. Airport (SAN)?
To arrive at San Diego Intl. Airport (SAN) on schedule, book a flight that leaves Marathon, FL (MTH-Florida Keys Marathon) 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 Marathon, FL (MTH-Florida Keys Marathon) to San Diego Intl. Airport (SAN) last-minute?
Last-minute bookings from MTH to SAN are usually more expensive. To secure the lowest prices, start looking for flights as soon as possible. That being said, if your travel plans are flexible, you may land a cheap fare right before your trip.
Is it cheaper to book a MTH to SAN flight and hotel package?
Compared with arranging flights and hotels separately, booking a MTH to SAN flight and hotel package with Expedia could lead to significant savings. What's more, managing everything in one place takes the hassle out of planning your trip. Simply pick your flights and select from our extensive range of hotels, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Marathon, FL (MTH-Florida Keys Marathon) to San Diego Intl. Airport (SAN)?
It's usually possible to reschedule or cancel your MTH to SAN flight. However, if the booking was 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 whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Florida Keys Marathon
Destination airport
San Diego Intl.
Distance
2247 mi

Book with confidence

Book with confidence

Marathon to San Diego Flights

The cheapest times to fly from Marathon to San Diego

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

 

The best time to book a flight from Marathon to San Diego

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

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 San Diego 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 Marathon to San Diego 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 San Diego 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 San Diego Flights

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Explore a world of travel with Expedia

*Available to One Key members.