Title: Cheap Flights from Portsmouth (PSM) to Shannon (SNN) - Expedia.ca ![Adobe](https://images.trvl-media.com/place/3229/c184ea28-b6d2-406d-b2b3-64d892371946.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/3229/c184ea28-b6d2-406d-b2b3-64d892371946.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Portsmouth (PSM) to Shannon (SNN) - [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 Portsmouth, NH (PSM-Portsmouth Intl.) to Shannon Airport (SNN) - ![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:psm,to:snn,departure:07/11/2025TANYT&leg2=from:snn,to:psm,departure:14/11/2025TANYT&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:psm,to:snn,departure:07/11/2025TANYT&leg2=from:snn,to:psm,departure:14/11/2025TANYT&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:psm,to:snn,departure:07/11/2025TANYT&leg2=from:snn,to:psm,departure:14/11/2025TANYT&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:psm,to:snn,departure:07/11/2025TANYT&leg2=from:snn,to:psm,departure:14/11/2025TANYT&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:psm,to:snn,departure:07/11/2025TANYT&leg2=from:snn,to:psm,departure:14/11/2025TANYT&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:psm,to:snn,departure:07/11/2025TANYT&leg2=from:snn,to:psm,departure:14/11/2025TANYT&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:psm,to:snn,departure:07/11/2025TANYT&leg2=from:snn,to:psm,departure:14/11/2025TANYT&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) ## Frequently asked questions ### How much is a flight from Portsmouth Intl. Airport (PSM) to Shannon Airport? > Start packing your suitcase, because round-trip journeys between Portsmouth Intl. Airport at Pease and SNN start from . That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book today to nab the best deal. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Portsmouth Intl. Airport at Pease to SNN? > Each air carrier has its own set of terms and conditions. If you do decide to cancel, follow the instructions on our [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from PSM to Shannon Airport (SNN) that have flexible change policies? > Plenty of airlines will allow you to move your flight without charging a fee. All you pay is the difference in the ticket price. When searching for Portsmouth Intl. Airport (PSM) to Shannon Airport (SNN) flights, you'll see a "No change fees" box for you to tick. ### How far is the flight from PSM to Shannon Airport? > The distance is around 4,600 kilometres, so pack your carry-on bag with all the items you need to make your journey comfortable. Wondering what to take on board your Portsmouth to Shannon flight? Earplugs, a sleep mask and a neck pillow are among the essentials. ### Which airlines fly direct from PSM to Shannon Airport? > Unfortunately, there are no airlines that fly direct between Portsmouth Intl. Airport at Pease and SNN. You'll need to book a flight with one or more stops. ### Are PSM to Shannon Airport flight tickets cheaper when they're purchased at the last minute? > Booking your trip from Portsmouth Intl. Airport (PSM) to SNN at the last minute could save you some cash. However, you might miss out on a flight altogether! If you'd prefer not to take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains as far ahead as 12 months in advance. If your preferred carrier hasn't released tickets yet, check back often as deals are updated on Expedia all the time. ## Travel information | Origin airport | Portsmouth Intl. | | --- | --- | | Destination airport | Shannon | | Distance | 4560 km | ## Book with confidence ### Portsmouth to Shannon Flights **The easy way to book your flights from Portsmouth to Shannon**  With Expedia, it’s simple to find and book flights to Shannon from Portsmouth 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 Shannon, 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 Portsmouth to Shannon today, tomorrow, or this week.   **Save dollars with cheap flights from Portsmouth Intl., PSM to Shannon, SNN**  Sort your search results by price to find great deals on your flight from Portsmouth to Shannon—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Shannon from Portsmouth 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 Shannon   - 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 Shannon from Portsmouth**  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 Shannon with Expedia today. \*Available to Expedia members.