HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portsmouth

Cheap flights from Boston (BOS) to Portsmouth, England

BOS — LHR
Nov 2 — Nov 91
Mon 11/2
Mon 11/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Portsmouth with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Boston to Portsmouth

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

January

Average price

$762
Provider with most accurate pricing for Boston Logan Intl-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-London (LON) flights.
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($150 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Insights

Everything you need to know about your flight from Boston to Portsmouth

What is the cheapest time of day to fly from BOS to P0R?

When flying from Boston to Portsmouth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Portsmouth

See what other customers who have flown with Aer Lingus from Boston to Portsmouth have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,811 reviews

Crew

8.1

Entertainment

7.0

Food

6.7

Comfort

7.2

Overall

7.3

Boarding

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

BOS - SNN

Seats were very uncomfortable and mine was falling apart. My entertainment system didn’t work at all, just a black screen. It was hot in the plane, the airflow alternated between room temperature and warm. The food was gross.
Aer Lingus
7.3
Good
1,811 reviews
Aer Lingus
7.3
Good
1,811 reviews

Crew

8.1

Entertainment

7.0

Food

6.7

Comfort

7.2

Overall

7.3

Boarding

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

BOS - SNN

Seats were very uncomfortable and mine was falling apart. My entertainment system didn’t work at all, just a black screen. It was hot in the plane, the airflow alternated between room temperature and warm. The food was gross.

Related info for your journey

  • What airport do you fly from for flights from Boston to Portsmouth?

    If you book a flight to Portsmouth from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 0 flights from Logan Intl to Portsmouth per day from 16 different airlines.

  • What are the most reliable airlines from Boston to Portsmouth?

    Before booking your flight to Portsmouth from Boston, check out the most reliable airlines to get you to your destination on time: Gulf Air (95%), KLM (87%), SAUDIA( 87%).

  • What are the cheapest flights from Boston to Portsmouth?

    While on average a flight from Boston to Portsmouth is generally $2,558, our data shows the cheapest flight currently is $291. When looking at the most popular route, (Boston Logan Intl - Southampton Eastleigh), you can expect to pay $686 for that flight.

  • Can I find deals for flights from Boston to Portsmouth that include hotel bookings?

    Yes. In addition to deals on Boston to Portsmouth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Portsmouth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Portsmouth.

  • Can I find deals for business class flights from Boston to Portsmouth?

    Yes. Cheapflights offers flight deals from Boston to Portsmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Boston to Portsmouth

AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$352Average$860FlexibilityNo cancel feeOn-time79%
Virgin AtlanticCheapest$410Average$810FlexibilityNo cancel feeOn-time72%
IcelandairCheapest$429Average$669FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$448Average$836FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$449Average$823FlexibilityNo cancel feeOn-time62%
LufthansaCheapest$466Average$734FlexibilityNo cancel feeOn-time76%
FinnairCheapest$479Average$708FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$479Average$754FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$481Average$720FlexibilityNo cancel feeOn-time77%
KLMCheapest$494Average$791FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.