Title: Cheap Flights from Portland (PDX) to Marathon (MTH) - Expedia.ca ![Marathon which includes swimming, tropical scenes and a sandy beach](https://images.trvl-media.com/place/2437/cc4c0572-7b75-47ab-8142-b235acf8743c.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/2437/cc4c0572-7b75-47ab-8142-b235acf8743c.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Portland (PDX) to Marathon (MTH) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Portland International Airport (PDX) to Marathon, FL (MTH-Florida Keys Marathon) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:pdx,to:mth,departure:30/10/2025TANYT&leg2=from:mth,to:pdx,departure:06/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet [](https://www.expedia.ca/Flights-Search?leg1=from:pdx,to:mth,departure:30/10/2025TANYT&leg2=from:mth,to:pdx,departure:06/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![Flair Airlines](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:pdx,to:mth,departure:30/10/2025TANYT&leg2=from:mth,to:pdx,departure:06/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:pdx,to:mth,departure:30/10/2025TANYT&leg2=from:mth,to:pdx,departure:06/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:pdx,to:mth,departure:30/10/2025TANYT&leg2=from:mth,to:pdx,departure:06/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:pdx,to:mth,departure:30/10/2025TANYT&leg2=from:mth,to:pdx,departure:06/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Porter Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_PD.svg) Porter Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:pdx,to:mth,departure:30/10/2025TANYT&leg2=from:mth,to:pdx,departure:06/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) Flight from Portland to Marathon (PDX - MTH) route information | Origin airport | Portland Intl. | | --- | --- | | Destination airport | Florida Keys Marathon | | Distance | 4336 km | ## Portland to Marathon Flights **The easy way to book your flights from Portland to Marathon**  With Expedia, it’s simple to find and book flights to Marathon from Portland 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 Portland to Marathon today, tomorrow, or this week.   **Save dollars with cheap flights from Portland Intl., PDX to Florida Keys Marathon, MTH**  Sort your search results by price to find great deals on your flight from Portland to Marathon—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Marathon from Portland 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 Portland**  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 PDX to MTH? > Round-trip flights between Portland Airport and MTH start from . This is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book now to avoid missing out. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Portland Intl. Airport (PDX) to MTH? > This can vary between airlines, as each has its own set of terms and conditions. Visit the [Customer Service Portal](https://www.expedia.ca/helpcenter), where you'll find instructions on how to cancel your flight online. ### How do I find cheap flights from Portland Intl. Airport (PDX) to MTH that have flexible change policies? > Flights from PDX to MTH offering flexible change policies are available with many airlines. Simply use our "No change fees" filter when searching. You'll only need to pay the cost difference between the two flights, without any extra fees to worry about. ### How far is the flight from PDX Airport to MTH? > With a flight distance of 4,400 kilometres between Portland and Marathon, this is a long-haul trip. Be sure to keep well hydrated and move around the cabin every now and then. ### Which airlines fly direct from PDX Airport to MTH? > Flying directly between Portland Airport and MTH isn't possible at the moment. However, you'll still be able to find a flight to Marathon with at least one stop. ### Are Portland Airport to MTH flight tickets cheaper when they're purchased at the last minute? > It is possible to nab an awesome last-minute deal from PDX Airport to MTH, but it's also possible to miss out altogether! As many airlines release seats up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to book when you spot a good bargain. Expedia compares carrier prices and updates flight deals often, so you can rest easy knowing you're always getting the latest offers. ## Explore a world of travel with Expedia - Flights ### Flights - [Flights from Cairo to Marathon](https://www.expedia.ca/lp/flights/178243/2437/cairo-to-marathon) - [Flights from Calgary to Marathon](https://www.expedia.ca/lp/flights/178245/2437/calgary-to-marathon) - [Flights from Columbus to Big Torch Key](https://www.expedia.ca/lp/flights/178251/553248635974614531/columbus-to-big-torch-key) - [Flights from Dallas to Marathon](https://www.expedia.ca/lp/flights/178253/2437/dallas-to-marathon) - [Flights from Detroit to Marathon](https://www.expedia.ca/lp/flights/178255/2437/detroit-to-marathon) - [Flights from New York to Ramrod Key](https://www.expedia.ca/lp/flights/178293/6156102/new-york-to-ramrod-key) - [Flights from Orlando to Cudjoe Key](https://www.expedia.ca/lp/flights/178294/3000430966/orlando-to-cudjoe-key) - [Flights from Ottawa to Marathon](https://www.expedia.ca/lp/flights/178296/2437/ottawa-to-marathon) - [Flights from Toronto to Islamorada](https://www.expedia.ca/lp/flights/178314/10768/toronto-to-islamorada) - [Flights from Toronto to Marathon](https://www.expedia.ca/lp/flights/178314/2437/toronto-to-marathon) - [Flights from Vancouver to Marathon](https://www.expedia.ca/lp/flights/178315/2437/vancouver-to-marathon) - [Flights from Paris to Cudjoe Key](https://www.expedia.ca/lp/flights/179898/3000430966/paris-to-cudjoe-key) - [Flights from Edmonton to Marathon](https://www.expedia.ca/lp/flights/180002/2437/edmonton-to-marathon) - [Flights from Kingston to Duck Key](https://www.expedia.ca/lp/flights/180034/184267/kingston-to-duck-key) - [Flights from Albany to Marathon](https://www.expedia.ca/lp/flights/277/2437/albany-to-marathon) - [Flights from Plattsburgh to Marathon](https://www.expedia.ca/lp/flights/2816/2437/plattsburgh-to-marathon) - [Flights from Tyler to Marathon](https://www.expedia.ca/lp/flights/3594/2437/tyler-to-marathon) - [Flights from Bedford to Marathon](https://www.expedia.ca/lp/flights/530/2437/bedford-to-marathon) - [Flights from Tada-U to Marathon](https://www.expedia.ca/lp/flights/553248635957385750/2437/tada-u-to-marathon) - [Flights from Milwaukee to Duck Key](https://www.expedia.ca/lp/flights/602647/184267/milwaukee-to-duck-key) - [Flights from Tampa to Islamorada](https://www.expedia.ca/lp/flights/602996/10768/tampa-to-islamorada) - [Flights from Naples to Marathon](https://www.expedia.ca/lp/flights/6034774/2437/naples-to-marathon) - [Flights from Ithaca to Marathon](https://www.expedia.ca/lp/flights/6056124/2437/ithaca-to-marathon) - [Flights from Owensboro to Marathon](https://www.expedia.ca/lp/flights/6059602/2437/owensboro-to-marathon) - [Flights from Winnipeg to Marathon](https://www.expedia.ca/lp/flights/6141041/2437/winnipeg-to-marathon) - [Flights from Beirut to Marathon](https://www.expedia.ca/lp/flights/6144605/2437/beirut-to-marathon) - [Flights from South Burlington to Marathon](https://www.expedia.ca/lp/flights/6739/2437/south-burlington-to-marathon) - [Flights from Corpus Christi to Marathon](https://www.expedia.ca/lp/flights/915/2437/corpus-christi-to-marathon) - [Flights from Cartagena to Marathon](https://www.expedia.ca/lp/flights/926/2437/cartagena-to-marathon) - [Flights from Palenque to Marathon](https://www.expedia.ca/lp/flights/9463/2437/palenque-to-marathon) - [Flights from Austin (AUS) to Key West (EYW)](https://www.expedia.ca/lp/flights/aus/eyw/austin-to-key-west) - [Flights from Boca Raton (BCT) to Key West (EYW)](https://www.expedia.ca/lp/flights/bct/eyw/boca-raton-to-key-west) - [Flights from Bangor (BGR) to Key West (EYW)](https://www.expedia.ca/lp/flights/bgr/eyw/bangor-to-key-west) - [Flights from Bemidji (BJI) to Key West (EYW)](https://www.expedia.ca/lp/flights/bji/eyw/bemidji-to-key-west) - [Flights from Branson (BKG) to Key West (EYW)](https://www.expedia.ca/lp/flights/bkg/eyw/branson-to-key-west) - [Flights from Bellingham (BLI) to Key West (EYW)](https://www.expedia.ca/lp/flights/bli/eyw/bellingham-to-key-west) - [Flights from Nashville (BNA) to Key West (EYW)](https://www.expedia.ca/lp/flights/bna/eyw/nashville-to-key-west) - [Flights from Boston (BOS) to Key West (EYW)](https://www.expedia.ca/lp/flights/bos/eyw/boston-to-key-west) - [Flights from Bartow (BOW) to Key West (EYW)](https://www.expedia.ca/lp/flights/bow/eyw/bartow-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 Belize City (BZE) to Key West (EYW)](https://www.expedia.ca/lp/flights/bze/eyw/belize-city-to-key-west) - [Flights from Charleston (CHS) to Key West (EYW)](https://www.expedia.ca/lp/flights/chs/eyw/charleston-to-key-west) - [Flights from Sault Ste. Marie (CIU) to Key West (EYW)](https://www.expedia.ca/lp/flights/ciu/eyw/sault-ste-marie-to-key-west) - [Flights from Charlotte (CLT) to Key West (EYW)](https://www.expedia.ca/lp/flights/clt/eyw/charlotte-to-key-west) - [Flights from Clearwater (CLW) to Key West (EYW)](https://www.expedia.ca/lp/flights/clw/eyw/clearwater-to-key-west) - [Flights from Cancun (CUN) to Key West (EYW)](https://www.expedia.ca/lp/flights/cun/eyw/cancun-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 Denver (DEN) to Key West (EYW)](https://www.expedia.ca/lp/flights/den/eyw/denver-to-key-west) - [Flights from Dallas (DFW) to Key West (EYW)](https://www.expedia.ca/lp/flights/dfw/eyw/dallas-to-key-west) - [Flights from Duluth (DLH) to Key West (EYW)](https://www.expedia.ca/lp/flights/dlh/eyw/duluth-to-key-west) - [Flights from Dunedin (DUD) to Key West (EYW)](https://www.expedia.ca/lp/flights/dud/eyw/dunedin-to-key-west) - [Flights from Kalispell (FCA) to Key West (EYW)](https://www.expedia.ca/lp/flights/fca/eyw/kalispell-to-key-west) - [Flights from Flint (FNT) to Key West (EYW)](https://www.expedia.ca/lp/flights/fnt/eyw/flint-to-key-west) - [Flights from Spokane (GEG) to Key West (EYW)](https://www.expedia.ca/lp/flights/geg/eyw/spokane-to-key-west) - [Flights from Grand Forks (GFK) to Key West (EYW)](https://www.expedia.ca/lp/flights/gfk/eyw/grand-forks-to-key-west) - [Flights from Niagara Falls (IAG) to Key West (EYW)](https://www.expedia.ca/lp/flights/iag/eyw/niagara-falls-to-key-west) - [Flights from Houston (IAH) to Key West (EYW)](https://www.expedia.ca/lp/flights/iah/eyw/houston-to-key-west) - [Flights from International Falls (INL) to Key West (EYW)](https://www.expedia.ca/lp/flights/inl/eyw/international-falls-to-key-west) - [Flights from Kissimmee (ISM) to Key West (EYW)](https://www.expedia.ca/lp/flights/ism/eyw/kissimmee-to-key-west) - [Flights from Las Vegas (LAS) to Key West (EYW)](https://www.expedia.ca/lp/flights/las/eyw/las-vegas-to-key-west) - [Flights from Los Angeles (LAX) to Key West (EYW)](https://www.expedia.ca/lp/flights/lax/eyw/los-angeles-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 Manila (MNL) to Key West (EYW)](https://www.expedia.ca/lp/flights/mnl/eyw/manila-to-key-west) - [Flights from Minot (MOT) to Key West (EYW)](https://www.expedia.ca/lp/flights/mot/eyw/minot-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 Minneapolis (MSP) to Key West (EYW)](https://www.expedia.ca/lp/flights/msp/eyw/minneapolis-to-key-west) - [Flights from New Orleans (MSY) to Key West (EYW)](https://www.expedia.ca/lp/flights/msy/eyw/new-orleans-to-key-west) - [Flights from Myrtle Beach (MYR) to Key West (EYW)](https://www.expedia.ca/lp/flights/myr/eyw/myrtle-beach-to-key-west) - [Flights from Nassau (NAS) to Key West (EYW)](https://www.expedia.ca/lp/flights/nas/eyw/nassau-to-key-west) - [Flights from Ocala (OCF) to Key West (EYW)](https://www.expedia.ca/lp/flights/ocf/eyw/ocala-to-key-west) - [Flights from Ogdensburg (OGS) to Key West (EYW)](https://www.expedia.ca/lp/flights/ogs/eyw/ogdensburg-to-key-west) - [Flights from Ontario (ONT) to Key West (EYW)](https://www.expedia.ca/lp/flights/ont/eyw/ontario-to-key-west) - [Flights from Chicago (ORD) to Key West (EYW)](https://www.expedia.ca/lp/flights/ord/eyw/chicago-to-key-west) - [Flights from Plattsburgh (PBG) to Key West (EYW)](https://www.expedia.ca/lp/flights/pbg/eyw/plattsburgh-to-key-west) - [Flights from Philadelphia (PHL) to Key West (EYW)](https://www.expedia.ca/lp/flights/phl/eyw/philadelphia-to-key-west) - [Flights from Pompano Beach (PPM) to Key West (EYW)](https://www.expedia.ca/lp/flights/ppm/eyw/pompano-beach-to-key-west) - [Flights from Presque Isle (PQI) to Key West (EYW)](https://www.expedia.ca/lp/flights/pqi/eyw/presque-isle-to-key-west) - [Flights from Raleigh (RDU) to Key West (EYW)](https://www.expedia.ca/lp/flights/rdu/eyw/raleigh-to-key-west) - [Flights from Richmond (RIC) to Key West (EYW)](https://www.expedia.ca/lp/flights/ric/eyw/richmond-to-key-west) - [Flights from Savannah (SAV) to Key West (EYW)](https://www.expedia.ca/lp/flights/sav/eyw/savannah-to-key-west) - [Flights from Orlando (SFB) to Key West (EYW)](https://www.expedia.ca/lp/flights/sfb/eyw/orlando-to-key-west) - [Flights from San Francisco (SFO) to Key West (EYW)](https://www.expedia.ca/lp/flights/sfo/eyw/san-francisco-to-key-west) - [Flights from Sault Ste. 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