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Cheap flights from Portsmouth to Boston from £549

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOS
17 Jul — 24 Jul1
1 adult

Cheap flight deals from Portsmouth to Boston

Keep the following information in mind while searching for Portsmouth to Boston flight deals. Data was last updated 12 July 2025.

Round-trip from

£549

Popular in

August

Cheapest in

September

Average price

£549
24/8-31/8
  • 24/8-31/8
  • 4 total stops
  • 46h 20m total
  • Portsmouth to Boston
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£36 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from Portsmouth to Boston

Cheapest flights from Portsmouth to Boston
Explore the most affordable flight options available from Portsmouth to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 July 2025.

Sun 24/809:10SOU - BOS
2 stops31h 25mMultiple Airlines
Sun 31/823:35BOS - SOU
2 stops14h 55mMultiple Airlines
Deal found 10/7£549
Sun 24/817:35SOU - BOS
1 stop28h 00mKLM
Sun 31/820:15BOS - SOU
1 stop31h 35mKLM
Deal found 10/7£610
Sun 17/809:20SOU - BOS
1 stop12h 15mDelta
Fri 22/820:00BOS - SOU
2 stops16h 00mDelta
Deal found 10/7£750
Sat 26/709:40SOU - BOS
1 stop14h 05mBritish Airways
Sat 27/917:30BOS - SOU
1 stop10h 05mBritish Airways
Deal found 11/7£1,164
Sun 27/709:20SOU - BOS
1 stop12h 10mVirgin Atlantic
Wed 30/720:15BOS - SOU
1 stop16h 35mVirgin Atlantic
Deal found 12/7£1,448

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 12 July 2025.
Use the filters below to find and compare flights from Portsmouth to Boston that are best for you.

Fly from

Portsmouth

Fly to

Boston

Route

Depart

Return

Price

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Sun 24/8

09:10-11:35

2 stops31h 25m

Boston Logan Intl

Sun 31/8

23:35-19:30

2 stops14h 55m

£549

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Sun 24/8

17:35-16:35

1 stop28h 00m

Boston Logan Intl

Sun 31/8

20:15-08:50

1 stop31h 35m

£610

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Sun 17/8

09:20-16:35

1 stop12h 15m

Boston Logan Intl

Fri 22/8

20:00-17:00

2 stops16h 00m

£750

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Sat 26/7

09:40-18:45

1 stop14h 05m

Boston Logan Intl

Sat 27/9

17:30-08:35

1 stop10h 05m

£1,164

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Sun 27/7

09:20-16:30

1 stop12h 10m

Boston Logan Intl

Wed 30/7

20:15-17:50

1 stop16h 35m

£1,448

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Mon 5/1

06:40-19:45

2 stops18h 05m

£1,022

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Sun 3/8

17:35-16:35

1 stop28h 00m

£1,453

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Best time to book a flight from Portsmouth to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Portsmouth with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Portsmouth to Boston?

Currently, October is the cheapest month in which you can book a flight from Portsmouth to Boston (average of £10). Flying from Portsmouth to Boston in July is currently the most expensive (average of £724). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Portsmouth to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 July 2025.

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

What is the cheapest day to fly from Portsmouth to Boston?

Use this chart to determine the cheapest time to fly return from Portsmouth to Boston. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Portsmouth to Boston flight should consider departing on Thursday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Portsmouth to Boston

Explore weekly flight availability from Portsmouth to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 12 July 2025.

The most flights from P0R to BOS are scheduled on a Monday (36 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (32 on average).

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated 12 July 2025.
Read through reviews of airlines operating flights from Portsmouth to Boston, such as Delta, KLM, andVirgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,952 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,952 reviews
Delta
8.0
Very Good
7,952 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,952 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Virgin Atlantic
7.4
Good
654 reviews
Delta
8.0
Very Good
7,952 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
British Airways
6.6
Okay
7,123 reviews
Delta
8.0
Very Good
7,952 reviews
Check prices

Crew

8.5

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Most people fly into Boston Logan Intl (BOS) if they book a flight to Boston from Portsmouth. On average, Logan Intl has 0 inbound flights from Portsmouth per day from 17 airlines. Boston Logan Intl is conveniently located just 2.6 mi from Boston’s city center.

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

    The top 3 most reliable airlines when flying from Portsmouth to Boston are KLM (92%), Air France (92%) and Delta (92%).

  • What are the cheapest flights from Portsmouth to Boston?

    The cheapest flight price from Portsmouth to Boston is £353. On average you can expect to pay £1,505. The most popular route, (Southampton Eastleigh - Boston Logan Intl), can usually be booked for £549.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Portsmouth to Boston?

    Currently, October is the cheapest month in which you can book a flight from Portsmouth to Boston (average of £10). Flying from Portsmouth to Boston in July is currently the most expensive (average of £724). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Portsmouth?

Book flights to Portsmouth if you plan to visit one of these locations
Burlington
Peabody
Cambridge
Somerville
Quincy
Chelmsford

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Alternative routes for Portsmouth to Boston

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Portsmouth to Boston

Discover the top 10 airlines that operate flights from Portsmouth to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 12 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£7Average£265FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
PLAYCheapest£260Average£348FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
TAP AIR PORTUGALCheapest£280Average£445FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£302Average£438FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£306Average£486FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapest£310Average£430FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£336Average£404FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£337Average£408FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£338Average£444FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air FranceCheapest£338Average£426FlexibilityNo cancel feeOn-time77%
Search Air France flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to Boston?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Portsmouth to Boston. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Boston?

Cheapflights simply makes it quick and affordable to book flights from Portsmouth to Boston by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Portsmouth to Boston with no change fees?

Yes! Cheapflights helps users easily find flights from Portsmouth to Boston with no change fees.

Can Cheapflights notify me if prices for flights from Portsmouth to Boston become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Boston from Portsmouth today and book when prices fit your budget.

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