---
title: "Cheap Flights from Philadelphia (PHL) to Marathon (MTH)"
description: "Cheap Flights from Philadelphia (PHL) to Marathon (MTH) start at for one-way and for round trip. Earn your airline miles on top of our rewards!"
canonical: "https://www.expedia.ca/lp/flights/phl/mth/philadelphia-to-marathon"
language: en-CA
market: CA
currency: CAD
prices_as_of: 2026-11-14T03:37:53Z
---

# Cheap Flights from Philadelphia (PHL) to Marathon (MTH)
![A thatched-roof building labeled 'Aquarium Encounters' with a sign indicating 'No Parking Any Time'.](https://images.trvl-media.com/place/2437/faa8da08-0530-4ab5-b8a5-0f5f969d7bc0.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

## Popular airlines from Philadelphia International Airport (PHL) to Marathon, FL (MTH-Florida Keys Marathon)

[Air Canada](https://www.expedia.ca/Flights-Search?leg1=from:PHL,to:MTH,departure:28/11/2026TANYT&leg2=from:MTH,to:PHL,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}])

[WestJet](https://www.expedia.ca/Flights-Search?leg1=from:PHL,to:MTH,departure:28/11/2026TANYT&leg2=from:MTH,to:PHL,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}])

[Flair Airlines](https://www.expedia.ca/Flights-Search?leg1=from:PHL,to:MTH,departure:28/11/2026TANYT&leg2=from:MTH,to:PHL,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}])

[American Airlines](https://www.expedia.ca/Flights-Search?leg1=from:PHL,to:MTH,departure:28/11/2026TANYT&leg2=from:MTH,to:PHL,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}])

[United](https://www.expedia.ca/Flights-Search?leg1=from:PHL,to:MTH,departure:28/11/2026TANYT&leg2=from:MTH,to:PHL,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}])

[Delta](https://www.expedia.ca/Flights-Search?leg1=from:PHL,to:MTH,departure:28/11/2026TANYT&leg2=from:MTH,to:PHL,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}])

[Porter Airlines](https://www.expedia.ca/Flights-Search?leg1=from:PHL,to:MTH,departure:28/11/2026TANYT&leg2=from:MTH,to:PHL,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}])

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## Book with confidence

### Philadelphia to Marathon Flights

#### The easy way to book your flights from Philadelphia to Marathon

With Expedia, it’s simple to find and book flights to Marathon from Philadelphia whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Florida Keys Marathon, too.

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Philadelphia to Marathon today, tomorrow, or this week.

#### Save dollars with cheap flights from Philadelphia Intl., PHL to Florida Keys Marathon, MTH

Sort your search results by price to find great deals on your flight from Philadelphia to Marathon—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Marathon from Philadelphia currently is just rising to .

Here are more money-saving tips:

- Fly in when flight prices are normally at their lowest
- Book about a month to 6 weeks before you travel for the best prices to Marathon
- Avoid peak season and weekends when flights can cost more
- Early morning and late-night flights are sometimes cheaper, so try varying your travel times
- One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!

#### Reasons to choose Expedia for your flight to Marathon from Philadelphia

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Marathon with Expedia today.

## Frequently Asked Questions

### How much is a flight from Philadelphia Intl. Airport (PHL) to MTH?

The lowest price advertised for a round-trip flight between Philadelphia Airport and MTH is . But you better act soon. This figure is based on fares quoted within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

### Do I need to pay a cancellation fee if I cancel my flight from Philadelphia Intl. Airport (PHL) to MTH?

Each airline has its own set of terms and conditions. If you decide to cancel your escape, visit our [Customer Service Portal](https://www.expedia.ca/helpcenter).

### How do I find cheap flights from PHL to MTH that have flexible change policies?

Select our "No change fees" filter to find flexible travel options for your flight from Philadelphia Intl. Airport (PHL) to MTH. This allows you to snag a fantastic price ahead of time and still have the freedom to reschedule without any additional fees. Keep in mind that you'll need to cover the fare difference.

### How far is the flight from PHL to MTH?

Expect to be cruising at altitude for a while, as the flight distance from Philadelphia to Marathon is 1,750 kilometres. Create a playlist of your favourite tunes before you leave home to stay entertained during your flight.

### Which airlines fly direct from Philadelphia Intl. Airport (PHL) to MTH?

Unfortunately, there are no airlines that directly fly between Philadelphia Intl. Airport (PHL) and MTH. You'll need to book a flight with at least one stop.

### Are PHL to MTH flight tickets cheaper when they're purchased at the last minute?

It is possible to get an amazing last-minute deal from Philadelphia Airport to MTH, but it's also possible to miss out entirely! As many airlines release prices up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to book when you see a good bargain. Expedia compares carrier prices and updates flight deals all the time, so you can rest easy knowing you're always getting the latest offers.

## Travel information

| Origin airport      | Philadelphia International Airport |
| ------------------- | ---------------------------------- |
| Destination airport | Marathon, FL                       |
| Distance            | 1,770 km away                      |

## Explore a world of travel with Expedia

- [Flights](?equalTargetTab=tab-0)
- [Flights from Lancaster (LNS) to Marathon (MTH)](https://www.expedia.ca/lp/flights/lns/mth/lancaster-to-marathon)
- [Flights from Las Vegas (LAS) to Key West (EYW)](https://www.expedia.ca/lp/flights/las/eyw/las-vegas-to-key-west)
- [Flights from Panama City (ECP) to Marathon (MTH)](https://www.expedia.ca/lp/flights/ecp/mth/panama-city-to-marathon)
- [Flights from Charleston (CHS) to Key West (EYW)](https://www.expedia.ca/lp/flights/chs/eyw/charleston-to-key-west)
- [Flights from Ithaca (ITH) to Marathon (MTH)](https://www.expedia.ca/lp/flights/ith/mth/ithaca-to-marathon)
- [Flights from Ottawa (YOW) to Marathon (MTH)](https://www.expedia.ca/lp/flights/yow/mth/ottawa-to-marathon)
- [Flights from Charleston (CHS) to Marathon (MTH)](https://www.expedia.ca/lp/flights/chs/mth/charleston-to-marathon)
- [Flights from Detroit (DTT) to Marathon (MTH)](https://www.expedia.ca/lp/flights/dtt/mth/detroit-to-marathon)
- [Flights from Fort Lauderdale (FLL) to Marathon (MTH)](https://www.expedia.ca/lp/flights/fll/mth/fort-lauderdale-to-marathon)
- [Flights from Stuart (SUA) to Marathon (MTH)](https://www.expedia.ca/lp/flights/sua/mth/stuart-to-marathon)
- [Flights from Chicago (MDW) to Marathon (MTH)](https://www.expedia.ca/lp/flights/mdw/mth/chicago-to-marathon)
- [Flights from Nagoya (NGO) to Marathon (MTH)](https://www.expedia.ca/lp/flights/ngo/mth/nagoya-to-marathon)
- [Flights from Windsor (YQG) to Key West (EYW)](https://www.expedia.ca/lp/flights/yqg/eyw/windsor-to-key-west)
- [Flights from Tirana (TIA) to Marathon (MTH)](https://www.expedia.ca/lp/flights/tia/mth/tirana-to-marathon)
- [Flights from Brunswick (SSI) to Marathon (MTH)](https://www.expedia.ca/lp/flights/ssi/mth/brunswick-to-marathon)
- [Flights from Chicago (ORD) to Key West (EYW)](https://www.expedia.ca/lp/flights/ord/eyw/chicago-to-key-west)
- [Flights from Newark Liberty Intl. Airport (EWR) to Key West (EYW)](https://www.expedia.ca/lp/flights/ewr/eyw/newark-liberty-intl-airport-to-key-west)
- [Flights from West Palm Beach (PBI) to Marathon (MTH)](https://www.expedia.ca/lp/flights/pbi/mth/west-palm-beach-to-marathon)
- [Flights from Destin (DSI) to Marathon (MTH)](https://www.expedia.ca/lp/flights/dsi/mth/destin-to-marathon)
- [Flights from Birmingham (BHM) to Marathon (MTH)](https://www.expedia.ca/lp/flights/bhm/mth/birmingham-to-marathon)
- [Flights from Dallas (DFW) to Marathon (MTH)](https://www.expedia.ca/lp/flights/dfw/mth/dallas-to-marathon)
- [Flights from Elmira (ELM) to Marathon (MTH)](https://www.expedia.ca/lp/flights/elm/mth/elmira-to-marathon)
- [Flights from Grand Forks (GFK) to Marathon (MTH)](https://www.expedia.ca/lp/flights/gfk/mth/grand-forks-to-marathon)
- [Flights from Moncton (YQM) to Key West (EYW)](https://www.expedia.ca/lp/flights/yqm/eyw/moncton-to-key-west)
- [Flights from Toronto (YTO) to Marathon (MTH)](https://www.expedia.ca/lp/flights/yto/mth/toronto-to-marathon)
- [Flights from Jacksonville (JAX) to Key West (EYW)](https://www.expedia.ca/lp/flights/jax/eyw/jacksonville-to-key-west)
- [Flights from Clearwater (CLW) to Marathon (MTH)](https://www.expedia.ca/lp/flights/clw/mth/clearwater-to-marathon)
- [Flights from New Orleans (MSY) to Key West (EYW)](https://www.expedia.ca/lp/flights/msy/eyw/new-orleans-to-key-west)
- [Flights from Minneapolis (MSP) to Key West (EYW)](https://www.expedia.ca/lp/flights/msp/eyw/minneapolis-to-key-west)
- [Flights from Danbury (DXR) to Marathon (MTH)](https://www.expedia.ca/lp/flights/dxr/mth/danbury-to-marathon)
- [Flights from Cleveland (CLE) to Key West (EYW)](https://www.expedia.ca/lp/flights/cle/eyw/cleveland-to-key-west)
- [Flights from Québec (YQB) to Key West (EYW)](https://www.expedia.ca/lp/flights/yqb/eyw/quebec-to-key-west)
- [Flights from Niagara Falls (IAG) to Marathon (MTH)](https://www.expedia.ca/lp/flights/iag/mth/niagara-falls-to-marathon)
- [Flights from Seattle (SEA) to Marathon (MTH)](https://www.expedia.ca/lp/flights/sea/mth/seattle-to-marathon)
- [Flights from San Francisco (SFO) to Marathon (MTH)](https://www.expedia.ca/lp/flights/sfo/mth/san-francisco-to-marathon)
- [Flights from Philadelphia (PHL) to Key West (EYW)](https://www.expedia.ca/lp/flights/phl/eyw/philadelphia-to-key-west)
- [Flights from Naples (APF) to Marathon (MTH)](https://www.expedia.ca/lp/flights/apf/mth/naples-to-marathon)
- [Flights from Corpus Christi (CRP) to Marathon (MTH)](https://www.expedia.ca/lp/flights/crp/mth/corpus-christi-to-marathon)
- [Flights from London (LHR) to Marathon (MTH)](https://www.expedia.ca/lp/flights/lhr/mth/london-to-marathon)
- [Flights from Buffalo (BUF) to Marathon (MTH)](https://www.expedia.ca/lp/flights/buf/mth/buffalo-to-marathon)
- [Flights from Miami (MIA) to Marathon (MTH)](https://www.expedia.ca/lp/flights/mia/mth/miami-to-marathon)
- [Flights from Orlando (SFB) to Key West (EYW)](https://www.expedia.ca/lp/flights/sfb/eyw/orlando-to-key-west)
- [Flights from Fort Pierce (FPR) to Marathon (MTH)](https://www.expedia.ca/lp/flights/fpr/mth/fort-pierce-to-marathon)
- [Flights from Manchester (MHT) to Marathon (MTH)](https://www.expedia.ca/lp/flights/mht/mth/manchester-to-marathon)
- [Flights from Plattsburgh (PBG) to Key West (EYW)](https://www.expedia.ca/lp/flights/pbg/eyw/plattsburgh-to-key-west)
- [Flights from Charlotte (CLT) to Marathon (MTH)](https://www.expedia.ca/lp/flights/clt/mth/charlotte-to-marathon)
- [Flights from Grand Rapids (GRR) to Marathon (MTH)](https://www.expedia.ca/lp/flights/grr/mth/grand-rapids-to-marathon)
- [Flights from Charleston (CRW) to Marathon (MTH)](https://www.expedia.ca/lp/flights/crw/mth/charleston-to-marathon)
- [Flights from Nashville (BNA) to Marathon (MTH)](https://www.expedia.ca/lp/flights/bna/mth/nashville-to-marathon)
- [Flights from Dunedin (DUD) to Key West (EYW)](https://www.expedia.ca/lp/flights/dud/eyw/dunedin-to-key-west)
- [Flights from Vancouver (YVR) to Marathon (MTH)](https://www.expedia.ca/lp/flights/yvr/mth/vancouver-to-marathon)
- [Flights from Los Angeles (LAX) to Key West (EYW)](https://www.expedia.ca/lp/flights/lax/eyw/los-angeles-to-key-west)
- [Flights from Fort Lauderdale (FXE) to Marathon (MTH)](https://www.expedia.ca/lp/flights/fxe/mth/fort-lauderdale-to-marathon)
- [Flights from Jacksonville (OAJ) to Marathon (MTH)](https://www.expedia.ca/lp/flights/oaj/mth/jacksonville-to-marathon)
- [Flights from Toronto (YTZ) to Key West (EYW)](https://www.expedia.ca/lp/flights/ytz/eyw/toronto-to-key-west)
- [Flights from Baltimore (BWI) to Marathon (MTH)](https://www.expedia.ca/lp/flights/bwi/mth/baltimore-to-marathon)
- [Flights from Clearwater (CLW) to Key West (EYW)](https://www.expedia.ca/lp/flights/clw/eyw/clearwater-to-key-west)
- [Flights from Victoria (YYJ) to Key West (EYW)](https://www.expedia.ca/lp/flights/yyj/eyw/victoria-to-key-west)
- [Flights from Melbourne (MLB) to Key West (EYW)](https://www.expedia.ca/lp/flights/mlb/eyw/melbourne-to-key-west)
- [Flights from New York (LGA) to Marathon (MTH)](https://www.expedia.ca/lp/flights/lga/mth/new-york-to-marathon)
- [Flights from St. Petersburg (PIE) to Marathon (MTH)](https://www.expedia.ca/lp/flights/pie/mth/st-petersburg-to-marathon)
- [Flights from Chicago (ORD) to Marathon (MTH)](https://www.expedia.ca/lp/flights/ord/mth/chicago-to-marathon)
- [Flights from Chub Cay (CCZ) to Marathon (MTH)](https://www.expedia.ca/lp/flights/ccz/mth/chub-cay-to-marathon)
- [Flights from Montreal (YUL) to Marathon (MTH)](https://www.expedia.ca/lp/flights/yul/mth/montreal-to-marathon)
- [Flights from Key West (EYW) to Marathon (MTH)](https://www.expedia.ca/lp/flights/eyw/mth/key-west-to-marathon)
- [Flights from Orlando (MCO) to Marathon (MTH)](https://www.expedia.ca/lp/flights/mco/mth/orlando-to-marathon)
- [Flights from Roanoke (ROA) to Marathon (MTH)](https://www.expedia.ca/lp/flights/roa/mth/roanoke-to-marathon)
- [Flights from Tallahassee (TLH) to Marathon (MTH)](https://www.expedia.ca/lp/flights/tlh/mth/tallahassee-to-marathon)
- [Flights from Naples (NAP) to Key West (EYW)](https://www.expedia.ca/lp/flights/nap/eyw/naples-to-key-west)
- [Flights from Toronto (YYZ) to Marathon (MTH)](https://www.expedia.ca/lp/flights/yyz/mth/toronto-to-marathon)
- [Flights from Saskatoon (YXE) to Key West (EYW)](https://www.expedia.ca/lp/flights/yxe/eyw/saskatoon-to-key-west)
- [Flights from Orlando (ORL) to Marathon (MTH)](https://www.expedia.ca/lp/flights/orl/mth/orlando-to-marathon)
- [Flights from Lewisburg (LWB) to Marathon (MTH)](https://www.expedia.ca/lp/flights/lwb/mth/lewisburg-to-marathon)
- [Flights from Niagara Falls (IAG) to Key West (EYW)](https://www.expedia.ca/lp/flights/iag/eyw/niagara-falls-to-key-west)
- [Flights from London (LON) to Marathon (MTH)](https://www.expedia.ca/lp/flights/lon/mth/london-to-marathon)
- [Flights from Kansas City (MCI) to Marathon (MTH)](https://www.expedia.ca/lp/flights/mci/mth/kansas-city-to-marathon)
- [Flights from Detroit (DTW) to Marathon (MTH)](https://www.expedia.ca/lp/flights/dtw/mth/detroit-to-marathon)
- [Flights from Bangor (BGR) to Key West (EYW)](https://www.expedia.ca/lp/flights/bgr/eyw/bangor-to-key-west)
- [Flights from Washington (DCA) to Key West (EYW)](https://www.expedia.ca/lp/flights/dca/eyw/washington-to-key-west)
- [Flights from Wilmington (ILM) to Marathon (MTH)](https://www.expedia.ca/lp/flights/ilm/mth/wilmington-to-marathon)
- [Flights from Richmond (RIC) to Key West (EYW)](https://www.expedia.ca/lp/flights/ric/eyw/richmond-to-key-west)
- [Flights from Bangor (BGR) to Marathon (MTH)](https://www.expedia.ca/lp/flights/bgr/mth/bangor-to-marathon)
- [Flights from Toronto (YTO) to Key West (EYW)](https://www.expedia.ca/lp/flights/yto/eyw/toronto-to-key-west)
- [Flights from Kelowna (YLW) to Key West (EYW)](https://www.expedia.ca/lp/flights/ylw/eyw/kelowna-to-key-west)
- [Flights from Marco Island (MRK) to Key West (EYW)](https://www.expedia.ca/lp/flights/mrk/eyw/marco-island-to-key-west)
- [Flights from Burlington (BTV) to Key West (EYW)](https://www.expedia.ca/lp/flights/btv/eyw/burlington-to-key-west)
- [Flights from St. Louis (STL) to Marathon (MTH)](https://www.expedia.ca/lp/flights/stl/mth/st-louis-to-marathon)
- [Flights from Charlotte (CLT) to Key West (EYW)](https://www.expedia.ca/lp/flights/clt/eyw/charlotte-to-key-west)
- [Flights from Mobile (MOB) to Marathon (MTH)](https://www.expedia.ca/lp/flights/mob/mth/mobile-to-marathon)
- [Flights from Boston (BOS) to Marathon (MTH)](https://www.expedia.ca/lp/flights/bos/mth/boston-to-marathon)
- [Flights from Clarksburg (CKB) to Marathon (MTH)](https://www.expedia.ca/lp/flights/ckb/mth/clarksburg-to-marathon)
- [Flights from Myrtle Beach (MYR) to Marathon (MTH)](https://www.expedia.ca/lp/flights/myr/mth/myrtle-beach-to-marathon)
- [Flights from New York (JFK) to Marathon (MTH)](https://www.expedia.ca/lp/flights/jfk/mth/new-york-to-marathon)
- [Flights from Newark Liberty Intl. Airport (EWR) to Marathon (MTH)](https://www.expedia.ca/lp/flights/ewr/mth/newark-liberty-intl-airport-to-marathon)
- [Flights from Cincinnati (CVG) to Key West (EYW)](https://www.expedia.ca/lp/flights/cvg/eyw/cincinnati-to-key-west)
- [Flights from Tri-Cities (TRI) to Marathon (MTH)](https://www.expedia.ca/lp/flights/tri/mth/tri-cities-to-marathon)
- [Flights from Syracuse (SYR) to Marathon (MTH)](https://www.expedia.ca/lp/flights/syr/mth/syracuse-to-marathon)
- [Flights from Austin (AUS) to Key West (EYW)](https://www.expedia.ca/lp/flights/aus/eyw/austin-to-key-west)
- [Flights from Worcester (ORH) to Marathon (MTH)](https://www.expedia.ca/lp/flights/orh/mth/worcester-to-marathon)
- [Flights from Hilton Head Island (HHH) to Marathon (MTH)](https://www.expedia.ca/lp/flights/hhh/mth/hilton-head-island-to-marathon)

\*Available to Expedia members.

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