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Cheap Flights to Marathon

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      Travellers and cabin class, 1 Adult, Economy

      Compare Marathon flights across hundreds of providers

      Find the cheapest month or even day of the year to fly to Marathon

      Book the best Marathon fare with no extra fees

      Flight deals to Marathon

      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.
      Key West.569 € per passenger.Departing Tue, 15 Sep, returning Mon, 21 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Dublin on Tue, 15 Sep, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Mon, 21 Sep, arriving in Dublin.Price includes taxes and charges.From 569 €, select.
      Key West.575 € per passenger.Departing Mon, 28 Sep, returning Mon, 5 Oct.Return flight with Air France.Outbound indirect flight with Air France, departs from Dublin on Mon, 28 Sep, arriving in Key West International.Inbound indirect flight with Air France, departs from Key West International on Mon, 5 Oct, arriving in Dublin.Price includes taxes and charges.From 575 €, select.
      Key West.576 € per passenger.Departing Thu, 3 Dec, returning Thu, 10 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Dublin on Thu, 3 Dec, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Thu, 10 Dec, arriving in Dublin.Price includes taxes and charges.From 576 €, select.
      Key West.577 € per passenger.Departing Wed, 14 Oct, returning Wed, 21 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Dublin on Wed, 14 Oct, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Wed, 21 Oct, arriving in Dublin.Price includes taxes and charges.From 577 €, select.
      Key West.637 € per passenger.Departing Sat, 30 Jan, returning Sat, 6 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Dublin on Sat, 30 Jan, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Sat, 6 Feb, arriving in Dublin.Price includes taxes and charges.From 637 €, select.
      Key West.637 € per passenger.Departing Sun, 14 Feb, returning Sun, 21 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Dublin on Sun, 14 Feb, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Sun, 21 Feb, arriving in Dublin.Price includes taxes and charges.From 637 €, select.
      Key West.638 € per passenger.Departing Fri, 15 Jan, returning Sat, 23 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Dublin on Fri, 15 Jan, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Sat, 23 Jan, arriving in Dublin.Price includes taxes and charges.From 638 €, select.
      Key West.692 € per passenger.Departing Thu, 6 May, returning Mon, 10 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Dublin on Thu, 6 May, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Mon, 10 May, arriving in Dublin.Price includes taxes and charges.From 692 €, select.
      Key West.723 € per passenger.Departing Mon, 31 Aug, returning Mon, 7 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Dublin on Mon, 31 Aug, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Mon, 7 Sep, arriving in Dublin.Price includes taxes and charges.From 723 €, select.
      Key West.1.258 € per passenger.Departing Sun, 27 Dec, returning Sat, 2 Jan.Return flight with American Airlines.Outbound indirect flight with American Airlines, departs from Dublin on Sun, 27 Dec, arriving in Key West International.Inbound indirect flight with American Airlines, departs from Key West International on Sat, 2 Jan, arriving in Dublin.Price includes taxes and charges.From 1.258 €, select.
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      Flying to Marathon

      The things to know before you go.
      Fly intoKey West International Airport
      Distance to Marathon70.0 km
      Cheapest flight found569 €
      Cheapest month to flySeptember

      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.
      Aug
      Find prices
      Sep
      from 569 €
      Oct
      from 577 €
      Nov
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      Dec
      from 576 €
      Jan
      from 638 €
      Feb
      from 637 €
      Mar
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      Apr
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      May
      from 692 €
      Jun
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      Jul
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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 569 €.
      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 Ireland and Marathon. Most routes have one or more stops.
      The best price we found for a return flight to Marathon is 569 €. 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 70.0 km away from the centre of Marathon. We've found flights into this airport from 569 €.
      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 Tuesday, 15 September 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 70.0km from Marathon.
      The average temperature in Marathon in August is around 29°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 - Delta.
      Key West International Airport is 70.0km from Marathon which is approximately 1 hour and 6 minutes driving time. Check out the options for car hire at Key West International Airport.

      Plan your trip to Marathon