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Flights to Marathon

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Looking for a cheap last-minute deal or the best return flight to Marathon? Find our lowest prices on one-way and return tickets to the easiest airport right here.

Flying to Marathon

The things to know before you go.
Fly intoKey West International Airport
Distance to Marathon69.9 km
Cheapest flight foundC$214
Cheapest month to flyMay

Find the cheapest time to fly to Marathon

Flexible on travel dates? Find the cheapest month – or even day – to catch a flight to Marathon.
Mar.
from C$329
Apr.
from C$223
May
from C$214
Jun.
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Jul.
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Aug.
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Sep.
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Oct.
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Nov.
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Dec.
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Jan.
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Feb.
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Frequently asked questions

Currently, there are no airlines that fly direct to Marathon. But we found flights with one or more stops from C$442.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Marathon but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
No airlines currently offer direct flights between Canada and Marathon. Most routes have one or more stops.
The best price we found for a return flight to Marathon is C$442. This is an estimate based on information collected from different airlines and travel providers flying to Key West International Airport over the last 4 days and is subject to change and availability.
The cheapest airport near Marathon is Key West International – which is 69.9 km away from the centre of Marathon. We've found flights into this airport from C$442.
After crunching the numbers on our flight calendar, we found that the cheapest date to fly to Key West International Airport, the closest airport to Marathon is Sunday, April 19, 2026.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Marathon is around 40 days in advance, so don’t leave your flight to the last minute.
Key West International Airport is the best option, and is around 69.9km from Marathon.
The average temperature in Marathon in March is around 23°C. The warmest month in Marathon is typically August, which averages 30°C. The coolest month is January, with temperatures averaging 21°C. The rainiest month is June, and it usually rains the least in January.
Currently, the cheapest airline that flies to Key West International Airport - the closest airport to Marathon - Porter Airlines.
Key West International Airport is 69.9km from Marathon which is approximately 1 hour and 5 minutes driving time. Check out the options for car hire at Key West International Airport.

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