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$241 Cheap Flights to Portmarnock

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Popular airlines to Portmarnock

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How much is the cheapest flight to Portmarnock?

Prices were available within the past 7 days and start at $241 for one-way flights and $492 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Scandinavian Airlines
TAP Portugal
JetBlue Airways
American Airlines

Alternative airports near Portmarnock

Prices were available within the past 7 days. Prices and availability are subject to change.

Find the cheapest month to fly from Columbus (CMH) to Dublin (DUB)

From $688 - $807 per traveler.

What you need to know for your flight to Portmarnock

Flights to Portmarnock at a glance

Traveling to Portmarnock is easy; you can choose from a variety of airlines, including both full-service and budget options. Compare travel times to find the best fit for your plans and budget, whether you're looking for cheap flights to Portmarnock or the cheapest flight available.

  • Major airport near Portmarnock: Dublin Airport (DUB)
  • Flights per week: 1,950+ flights arriving at Portmarnock airport
  • Number of airlines that fly to Portmarnock: around 45+ carriers

Popular airport near Portmarnock

Portmarnock, a charming destination, is perfect for outdoor enthusiasts, sports lovers, and family vacations. Visitors are drawn to its rich culture, athletic activities, romantic spots, and family-friendly attractions. The city is conveniently served by Dublin Airport, making it easily accessible for travelers.

  • Dublin Airport (DUB): Situated approximately 4 miles from Portmarnock, this airport facilitates both domestic and international travel, linking to around 2 domestic cities and over 225 international destinations. Passengers have the option to enhance their experience by selecting premium economy or business class seating for greater comfort, subject to the airlines and routes. Notable airlines operating here include Aer Lingus, Ryanair, and United.

Top routes to Portmarnock

  • London (LGW/LHR/LCY/LTN/STN) to Portmarnock (DUB), with one-way flight options from around $25
  • Boston (BOS) to Portmarnock (DUB), with one-way airfare from around $170
  • New York (JFK/LGA) to Portmarnock (DUB), with one-way flight options from around $170
  • Newark (EWR) to Portmarnock (DUB), with one-way flights starting at around $170
  • Edinburgh (EDI) to Portmarnock (DUB), with one-way flight options from around $25

Cheapest routes to Portmarnock

  • Tirana (TIA) to Portmarnock (DUB), with low one-way fares from around $20
  • Killarney (KIR) to Portmarnock (DUB), with budget one-way fares from around $20
  • Luxembourg (LUX) to Portmarnock (DUB), with affordable one-way prices from around $25
  • Newcastle (NCL) to Portmarnock (DUB), with budget one-way fares from around $25
  • London (LGW/LHR/LCY/LTN/STN) to Portmarnock (DUB), with budget one-way fares from around $25

*Flight times and fares vary by season and availability and are based on one-way routes

Top airlines with flights to Portmarnock

  • Aer Lingus: Operating flights to Dublin Airport (DUB), Aer Lingus represents approximately 27% of the arrivals at Portmarnock. The average fare for a one-way ticket is around $330. Depending on the route, travelers may find options for premium economy and business class service.
  • Ryanair: Ryanair services Dublin Airport (DUB) and accounts for roughly 16% of Portmarnock arrivals. Passengers can expect an average one-way fare of about $90, making it a budget-friendly choice.
  • United: With flights to Dublin Airport (DUB), United captures around 12% of arrivals to Portmarnock. The average fare for a one-way journey is approximately $420, with premium economy and business class available depending on the specific route.
  • American Airlines: Flying into Dublin Airport (DUB), American Airlines is responsible for about 11% of arrivals at Portmarnock. The typical one-way fare is around $480, and options for premium economy and business class may be offered based on the route.
  • Delta: Delta operates flights to Dublin Airport (DUB) and holds around 8% of the arrivals at Portmarnock. The average fare for a one-way ticket is approximately $440, with premium service options like premium economy and business class available depending on the itinerary.

Best time to fly to Portmarnock

The most popular months for travelers to fly to Portmarnock are March, April, and July, when peak temperatures in Portmarnock can reach up to 59.2°F in July. If you prefer quieter travel, consider November, the least busy time to visit with temperatures around 46.8°F and typically the lowest average one-way fare (around $274), roughly 14% cheaper than the yearly average. Looking for additional cheaper months to fly? October, March, and January offer average one-way fares of around $282, making them good options for flexible travelers.

calendar iconMonthtemperature iconTemperaturerain iconPrecipitationmostly cloudy iconCloudinesscrowd level iconDemandprice iconAverage one-way Fare
January41.9°F (5.5°C)Light RainMostly CloudyLow$286
February42.6°F (5.9°C)Light RainMostly CloudyAverage$289
March43.9°F (6.6°C)Light RainMostly CloudyHigh$285
April46.8°F (8.2°C)Light RainMostly CloudyHigh$318
May51.4°F (10.8°C)Light RainMostly CloudyAverage$348
June56.3°F (13.5°C)Light RainMostly CloudyAverage$397
July59.2°F (15.1°C)Light RainMostly CloudyHigh$344
August58.6°F (14.8°C)Light RainMostly CloudyAverage$327
September55.9°F (13.3°C)Light RainMostly CloudyAverage$326
October52.3°F (11.3°C)Light RainMostly CloudyAverage$279
November46.8°F (8.2°C)Light RainMostly CloudyLow$274
December43.5°F (6.4°C)Light RainMostly CloudyLow$360

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

How to save money on a flight to Portmarnock

Getting some of the best deals on flights to Portmarnock is all about timing and flexibility. Here are some key tips to help you save:

  1. Compare flight options—use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  2. Set up price alerts—as an Expedia member you can use Price Tracking to receive notifications when flight prices change.
  3. Bundle and save—book a flight and unlock a hotel deal on Expedia*, or explore our Portmarnock hotel and flight deals.
  4. Think about luggage-nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your baggage allowance before confirming your booking to avoid excess baggage fees at the airport.
  5. Earn miles—you can earn airline miles when you book your Portmarnock flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in Portmarnock

Portmarnock welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach Portmarnock efficiently:

  • Public transportation: From Dublin Airport, several important transport options are easily accessible by car. Dublin Howth Junction Station, a train station, is located about 4.9 miles from the airport, while Phibsborough Tram Stop, a metro station, is around 6.2 miles away. If you're heading to the waterfront, 3Arena Seaport, a seaport, is approximately 6.7 miles from the airport.
  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Portmarnock, with private rides that can be arranged in advance.
  • Car rental: Renting a car in Portmarnock is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in Portmarnock on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.

Where to stay in and around Portmarnock

  • Dublin: A vibrant metropolis, Dublin is a cultural hub rich in history and modern attractions, making it a prime destination for family vacations and city explorations. Located nearby, Portmarnock offers easy access to Dublin's highlights, including the serene St. Stephen's Green, the prestigious Trinity College, and the bustling Grafton Street. With a mix of educational venues, shopping areas, and sports facilities, Dublin invites travelers to immerse themselves in its lively atmosphere and diverse activities.
  • Rush: Located 14 miles drive away from Portmarnock, Rush is a charming city that provides visitors with a delightful blend of outdoor activities and cultural experiences. Families will appreciate the local history museum and the stunning Malahide Castle. The picturesque Malahide Beach is perfect for a relaxing day by the sea, while O'Connell Street offers a lively urban scene. Whether you're exploring the local golf courses or enjoying waterfront views, Rush has something for everyone.
  • Donabate: Situated 4 miles drive away from Portmarnock, Donabate is a delightful seaside destination known for its beautiful beaches and historic sites. This city boasts family-friendly attractions, including the nearby Malahide Castle, which is ideal for a romantic outing or cultural exploration. With golf courses and an inviting beach atmosphere, Donabate provides visitors an opportunity to unwind while engaging with the local culture. The scenic landscape and vibrant community make it a great spot for a day trip.

Tips for short-haul flights to Portmarnock

For quick getaways, efficiency is key. Here is how to make your short-haul journey smoother:

  • Pack light and skip checked bags—when flying with budget airlines, traveling with just a carry-on is often more economical. Optimize space by using mini toiletries, wearing your heaviest clothing, and coordinating outfits efficiently. This approach also allows you to bypass the baggage claim line upon arrival.
  • Bring your own entertainment—short-haul flights frequently lack in-flight entertainment options. Download your favorite TV shows, movies, music, or podcasts ahead of time, and consider bringing a book to keep yourself entertained. Remember to fully charge your devices before you board.
  • Arrive at the airport in plenty of time—for short or domestic flights, it's advisable to arrive at least 1.5 to 2 hours before departure, taking into account potential traffic and security lines.
  • Bring your own snacks and water—pack your own snacks and a refillable water bottle to stay hydrated and save money at the airport.

Tips for long-haul flights to Portmarnock

Flying long-haul sometimes requires extra planning to ensure a comfortable journey:

  • Select your seat in advance—for long-haul flights, choosing your seat is crucial for comfort. Full-service airlines often provide free seat selection once online check-in opens, typically 24 to 48 hours before your flight. Some airlines may allow you to select your seat even earlier.
  • Arrive at the airport in plenty of time—make sure to arrive at least 3 hours before departure for international flights to accommodate check-in, security, and immigration procedures.
  • Relax at the airport—if time permits, take a moment to explore the shops, grab a coffee, or unwind at the gate or in a departure lounge if you have access. Most airports offer free and accessible Wi-Fi.
  • Adjust to the new time zone mid-flight—begin syncing your body clock by changing your watch and sleep schedule to align with your destination's time zone. Try to rest or stay awake during the flight according to the local time at your arrival destination to help minimize jet lag.

Frequently asked questions

What month is the cheapest to fly to Portmarnock?
The cheapest month to fly to Portmarnock is February when demand is low. Off-peak months are often when you'll find cheap flights. To save money, steer clear of flying during school breaks and major holidays.
Which US cities fly direct to Portmarnock?
There are 16 US cities you're able to fly to Portmarnock nonstop from. Explore your options by using the "Direct flights only" filter on Expedia and find the best departure point for you. Here are some of the major cities to take off from:
  • Boston
  • New York
  • Newark
  • Washington
  • Chicago
How to find a cheap flight to Portmarnock?
Book early for the best chance of scoring cheap flights to Portmarnock. Also, consider visiting during off-peak months like December and January. If you leave on a Thursday, you can save 16% on average compared to departing on a Sunday.* Save time checking every day and track your flight prices using the Expedia app. We'll let you know when fares drop.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to Portmarnock?
It's possible to get good deals on last-minute flights to Portmarnock, especially if your travel arrangements are flexible. Think about jetting out of a different hub, changing your trip dates or choosing an alternative airline to get a cheap flight to Portmarnock.
How far in advance should I book a flight to Portmarnock?
For some of the best deals on domestic journeys, book your flight to Portmarnock 28 days ahead of your travel dates. For international flights, it's two to four months in advance. This increases your chances of securing the departure dates and seats you want.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to Portmarnock?
You can generally get cheap flights to Portmarnock on a Sunday. Travelers can save about 8% on average compared to those who book on a Friday, which is often the most expensive day to purchase tickets.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to Portmarnock?
You can choose from a good range of airlines that service Portmarnock. A few of the most popular are:
  • Aer Lingus - 464 flights to Portmarnock each month, including 464 flights to Dublin Airport (DUB) per month.
  • United Airlines - 117 flights to Portmarnock each month, including 117 flights to Dublin Airport (DUB) per month.
  • Delta Air Lines - 91 flights to Portmarnock each month, including 91 flights to Dublin Airport (DUB) per month.
Can I save money by booking a Portmarnock trip package?
Book a Portmarnock flight and hotel package deal on Expedia, and you can enjoy significant savings. It's a breeze to bundle your hotel and flight, and you can even add activities and car rentals to create your own personalized Portmarnock vacation. Plus, there's nothing like the convenience of booking everything in the same place.
Can I change or cancel my flight to Portmarnock?
It's usually possible to change or cancel your flight to Portmarnock. Many airlines allow you to cancel flights for free within 24 hours of making your booking. However, some flights are non-refundable, and airlines may offer you a credit toward future travel instead of a direct refund. To get cheap flights to Portmarnock with flexible change policies, select "Changes included" or "No cancel fee" when you search. Looking for more information? Head to our Customer Service Portal.

*Flight schedules are subject to change.

*Available to One Key members.

Book with confidence

Tips to find the cheapest flights to Portmarnock

The cheapest day to fly

Get started finding a cheap flight to Portmarnock on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

The cheapest month to fly

February is the cheapest month to fly to Portmarnock. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to Portmarnock. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute.

The most affordable time to book a flight

Typically, a Sunday can be the cheapest time to book a flight to Portmarnock, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation.

The cheapest round-trip tickets to Portmarnock

The lowest price for round-trip flights to Portmarnock in 2026 starts from from $492, while one-way tickets start from from $241. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to Portmarnock. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Portmarnock

American Airlines, Icelandair, JetBlue Airways, British Airways, Air Canada, Scandinavian Airlines, TAP Portugal are just some of the airlines that can typically offer cheap tickets to Portmarnock. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to Portmarnock and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for Portmarnock, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to Portmarnock. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.

Save with a package

With Expedia's amazing package deals, you could save hundreds of dollars by booking your Portmarnock plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving.

Date flexibility for the cheapest flights to Portmarnock

If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to Portmarnock.

Stopover savings

The cheapest tickets to Portmarnock are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Portmarnock. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.

Get Expedia's Price Drop Protection

Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference*. This gives you peace of mind that you're getting one of the cheapest flights to Portmarnock for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.

*Terms apply.

Use our Price Tracking feature

Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to Portmarnock. Simply download the free Expedia app to your smart device and activate Portmarnock flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.

Book with Expedia

As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to Portmarnock. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Tips to find the cheapest flights to Portmarnock

Travel information

Destination airport
Dublin
Destination airport IATA code
DUB
Destination city name
Dublin
Roundtrip price
$492

Trending flights to Portmarnock

Prices were available within the past 7 days and start at $241 for one-way flights and $492 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair

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