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Cheap flights to Marathon

Compare Marathon flights across hundreds of providers

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

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Flight deals to Marathon

Looking for a cheap last-minute deal or the best roundtrip flight to Marathon? Find our lowest prices on one-way and roundtrip tickets to the most convenient airport right here.
Key West.$67 per passenger.Departing Mon, Apr 27, returning Fri, May 1.Round-trip flight with Breeze Airways.Outbound direct flight with Breeze Airways departing from Tampa International on Mon, Apr 27, arriving in Key West International.Inbound direct flight with Breeze Airways departing from Key West International on Fri, May 1, arriving in Tampa International.Price includes taxes and charges.From $67, select.
Key West.$67 per passenger.Departing Sun, Apr 19, returning Fri, Apr 24.Round-trip flight with Breeze Airways.Outbound direct flight with Breeze Airways departing from Tampa International on Sun, Apr 19, arriving in Key West International.Inbound direct flight with Breeze Airways departing from Key West International on Fri, Apr 24, arriving in Tampa International.Price includes taxes and charges.From $67, select.
Key West.$70 per passenger.Departing Tue, Mar 31, returning Fri, Apr 3.Round-trip flight with Breeze Airways.Outbound direct flight with Breeze Airways departing from Tampa International on Tue, Mar 31, arriving in Key West International.Inbound direct flight with Breeze Airways departing from Key West International on Fri, Apr 3, arriving in Tampa International.Price includes taxes and charges.From $70, select.
Key West.$74 per passenger.Departing Mon, Mar 23, returning Thu, Mar 26.Round-trip flight with Breeze Airways.Outbound direct flight with Breeze Airways departing from Tampa International on Mon, Mar 23, arriving in Key West International.Inbound direct flight with Breeze Airways departing from Key West International on Thu, Mar 26, arriving in Tampa International.Price includes taxes and charges.From $74, select.
Key West.$76 per passenger.Departing Mon, Jun 29, returning Fri, Jul 10.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Orlando Sanford on Mon, Jun 29, arriving in Key West International.Inbound direct flight with Allegiant Air departing from Key West International on Fri, Jul 10, arriving in Orlando Sanford.Price includes taxes and charges.From $76, select.
Key West.$76 per passenger.Departing Sun, May 3, returning Thu, May 7.Round-trip flight with Breeze Airways.Outbound direct flight with Breeze Airways departing from Tampa International on Sun, May 3, arriving in Key West International.Inbound direct flight with Breeze Airways departing from Key West International on Thu, May 7, arriving in Tampa International.Price includes taxes and charges.From $76, select.
Key West.$76 per passenger.Departing Mon, Jun 22, returning Thu, Jun 25.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Orlando Sanford on Mon, Jun 22, arriving in Key West International.Inbound direct flight with Allegiant Air departing from Key West International on Thu, Jun 25, arriving in Orlando Sanford.Price includes taxes and charges.From $76, select.
Key West.$80 per passenger.Departing Fri, Jul 3, returning Wed, Jul 8.Round-trip flight with Breeze Airways.Outbound direct flight with Breeze Airways departing from Tampa International on Fri, Jul 3, arriving in Key West International.Inbound direct flight with Breeze Airways departing from Key West International on Wed, Jul 8, arriving in Tampa International.Price includes taxes and charges.From $80, select.
Key West.$82 per passenger.Departing Fri, May 29, returning Mon, Jun 1.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Orlando Sanford on Fri, May 29, arriving in Key West International.Inbound direct flight with Allegiant Air departing from Key West International on Mon, Jun 1, arriving in Orlando Sanford.Price includes taxes and charges.From $82, select.
Key West.$83 per passenger.Departing Sun, Jul 26, returning Thu, Aug 6.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Orlando Sanford on Sun, Jul 26, arriving in Key West International.Inbound direct flight with Allegiant Air departing from Key West International on Thu, Aug 6, arriving in Orlando Sanford.Price includes taxes and charges.From $83, select.
Key West.$85 per passenger.Departing Mon, Aug 3, returning Thu, Aug 6.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Orlando Sanford on Mon, Aug 3, arriving in Key West International.Inbound direct flight with Allegiant Air departing from Key West International on Thu, Aug 6, arriving in Orlando Sanford.Price includes taxes and charges.From $85, select.
Key West.$89 per passenger.Departing Mon, Oct 12, returning Fri, Oct 16.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Orlando Sanford on Mon, Oct 12, arriving in Key West International.Inbound direct flight with Allegiant Air departing from Key West International on Fri, Oct 16, arriving in Orlando Sanford.Price includes taxes and charges.From $89, select.
Key West.$96 per passenger.Departing Mon, Sep 7, returning Fri, Sep 11.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from St. Pete–Clearwater International on Mon, Sep 7, arriving in Key West International.Inbound direct flight with Allegiant Air departing from Key West International on Fri, Sep 11, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From $96, select.
Key West.$116 per passenger.Departing Mon, Aug 31, returning Sun, Sep 13.Round-trip flight with Breeze Airways.Outbound direct flight with Breeze Airways departing from Orlando International on Mon, Aug 31, arriving in Key West International.Inbound direct flight with Breeze Airways departing from Key West International on Sun, Sep 13, arriving in Orlando International.Price includes taxes and charges.From $116, select.
Key West.$119 per passenger.Departing Wed, Nov 4, returning Sun, Nov 15.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from St. Pete–Clearwater International on Wed, Nov 4, arriving in Key West International.Inbound direct flight with Allegiant Air departing from Key West International on Sun, Nov 15, arriving in St. Pete–Clearwater International.Price includes taxes and charges.From $119, select.
Key West.$139 per passenger.Departing Fri, Oct 23, returning Thu, Nov 5.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Orlando Sanford on Fri, Oct 23, arriving in Key West International.Inbound direct flight with Allegiant Air departing from Key West International on Thu, Nov 5, arriving in Orlando Sanford.Price includes taxes and charges.From $139, select.

Flying to Marathon

The things to know before you go.
Fly intoKey West International Airport
Distance to Marathon43.4 miles
Average flight time2 hrs, 29 mins
Most popular airlineAmerican Airlines
Cheapest flight found$67
Cheapest month to flyApril

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 $74
Apr
from $67
May
from $76
Jun
from $76
Jul
from $80
Aug
from $85
Sep
from $96
Oct
from $89
Nov
from $119
Dec
from $304
Jan
from $287
Feb
from $404

Frequently asked questions

The average flight time to Marathon is 3 hours and 16 minutes. We've calculated this based on journeys to Key West International Airport.
American Airlines, Envoy Air, Republic Airways, Allegiant Air, Qatar Airways, United, Delta, and KLM all offer direct flights to Key West International Airport.
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.
Yes – you can fly direct to Key West International Airport and the average flight time is 2 hours and 32 minutes.
The best price we found for a roundtrip flight to Marathon is $67. This is an estimate based on information collected from different airlines and travel providers flying to Key West International Airport over the last four (4) days and is subject to change and availability.
The cheapest airport near Marathon is Key West International – which is 43.4 miles away from the center of Marathon. We've found flights to this airport from $67.
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 43.4 miles from Marathon.
The average temperature in Marathon in March is around 73°F. The warmest month in Marathon is typically August, which averages 85°F. The coolest month is January, with temperatures averaging 69°F. 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 – is Breeze Airways.
Key West International Airport is 43.4 miles from Marathon which is approximately 1 hour and 5 minutes driving time. Check out the options for car rental at Key West International Airport.