EUR/IE
Find cheap flights to Portsmouth, New Hampshire in 2026/2027 from €857 This is the cheapest return flight found to Portsmouth, New Hampshire from Ireland on FlightsFinder on June 7th 2026 at 21:37. This offer may no longer be available. Click the offer to check live prices & dates of travel.
Our Flight Finder compares the cheapest flights to Portsmouth, New Hampshire from the most established flight comparison sites.
Fly to Portsmouth, New Hampshire and visit sites like Strawbery Banke Museum, Water Country Water Park, Prescott Park & USS Albacore Museum.
1. Enter your search requirements for Portsmouth, New Hampshire
2. Compare the best Portsmouth, New Hampshire deals from top comparison engines
3. Book your Portsmouth, New Hampshire flight at the cheapest price
These economy flights were found on FlightsFinder from Ireland to Portsmouth, New Hampshire in the last few days. Prices subject to availability.
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These economy flights were found on FlightsFinder from Ireland to Portsmouth, New Hampshire in the last few days. Prices subject to availability.
No flights found for this month.
No flights found for this month.
No flights found for this month.
No flights found for this month.
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According to our data, August is on average the cheapest time to book flights to Portsmouth, New Hampshire.
You can get flights from €857 return.
According to our data, September is on average the most expensive time to book flights to Portsmouth, New Hampshire.
A return flight could set you back more than €1,424.
Located along the picturesque coastline of New Hampshire, Portsmouth seamlessly blends historic charm with a vibrant modern energy. This coastal city boasts a rich maritime heritage, evident in its well-preserved colonial architecture and bustling waterfront. Visitors can explore local boutiques, art galleries, and fine dining establishments in the vibrant downtown area, or unwind on the sandy shores of nearby beaches. With its inviting atmosphere, cultural attractions, and scenic views of the Piscataqua River, Portsmouth offers a delightful blend of history, culture, and natural beauty that captivates travelers from near and far.
A good price for a flight to Boston is €771 - €943.
The popular airports near Portsmouth, New Hampshire are: Portsmouth International Airport at Pease (PSM), Manchester-Boston Regional Airport (MHT), and Boston Logan International Airport (BOS).
The flight to Portsmouth, New Hampshire (PSM) is roughly 7 hours 2 minutes and 2,947 miles (4,742 kilometres) from Dublin, Ireland - Dublin International Airport (DUB).
The best way is to compare flights to Portsmouth, New Hampshire from leading comparison sites using our search engine dashboard.
We have currently found no direct flights to Portsmouth, New Hampshire.
Here is the average weather forecast in Portsmouth, New Hampshire by month:
• Jan: 0°C
• Feb: 0°C
• Mar: 5°C
• Apr: 11°C
• May: 18°C
• Jun: 23°C
• Jul: 26°C
• Aug: 25°C
• Sep: 21°C
• Oct: 15°C
• Nov: 9°C
• Dec: 1°C
The Portsmouth International Airport at Pease is located approximately 4 miles (6.4 km) from the city center of Portsmouth, New Hampshire.
Typically, flights are cheapest to Portsmouth, New Hampshire 2 months before departure.
Studies show flights to Portsmouth, New Hampshire are typically cheaper on Tuesdays and Wednesdays.
18.1 °C
Sun, 14 Jun 2026
Average Temperature
0°C
Jan
0°C
Feb
5°C
Mar
11°C
Apr
18°C
May
23°C
Jun
26°C
Jul
25°C
Aug
21°C
Sep
15°C
Oct
9°C
Nov
1°C
Dec
Dublin, Ireland - Dublin International Airport (DUB) to Portsmouth, New Hampshire (PSM)
Distance:
2,947 miles (4,742 kilometres)
Average flight time (direct 7 hours 2 minutes)
Shannon, Ireland - Shannon International Airport (SNN) to Portsmouth, New Hampshire (PSM)
Distance:
2,850 miles (4,587 kilometres)
Average flight time (direct 6 hours 50 minutes)
Knock, Ireland - Ireland West Airport (NOC) to Portsmouth, New Hampshire (PSM)
Distance:
2,838 miles (4,567 kilometres)
Average flight time (direct 6 hours 48 minutes)
Cork, Ireland - Cork International Airport (ORK) to Portsmouth, New Hampshire (PSM)
Distance:
2,881 miles (4,637 kilometres)
Average flight time (direct 6 hours 54 minutes)
Kerry, Ireland - Kerry Airport (KIR) to Portsmouth, New Hampshire (PSM)
Distance:
2,833 miles (4,560 kilometres)
Average flight time (direct 6 hours 47 minutes)
Donegal, Ireland - Donegal Airport (CFN) to Portsmouth, New Hampshire (PSM)
Distance:
2,842 miles (4,574 kilometres)
Average flight time (direct 6 hours 48 minutes)
Waterford, Ireland - Waterford Airport (WAT) to Portsmouth, New Hampshire (PSM)
Distance:
2,934 miles (4,721 kilometres)
Average flight time (direct 7 hours 1 minute)
From Dublin (DUB), Ireland to Boston, United States (PSM): €857
Depart: 11 Aug 2026 · Return: 22 Aug 2026 Price found 07 Jun 2026, 21:37
From Shannon (SNN), Ireland to Boston, United States (PSM): €1,260
Depart: 16 Jul 2026 · Return: 23 Jul 2026 Price found 12 Jun 2026, 16:28
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