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Portsmouth

$329+ Cheap flights from Boston (BOS) to Portsmouth, England

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LHR
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Boston to Portsmouth

Keep the following information in mind while searching for Boston to Portsmouth flight deals. Data was last updated September 17, 2025.

Round-trip from

$519
(Kiwi.com)

One-way from

$329
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$570
From Boston Logan Intl to Portsmouth
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One-way flight from Boston Logan Intl to Portsmouth
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Highest demand for flights based on searches. 14% potential increase in price ($105 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Boston to Portsmouth

Cheapest flights from Boston to Portsmouth
Explore the most affordable flight options available from Boston to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:10 pmBOS - SOU
1 stop10h 35mAer Lingus
Thu 11/69:30 amSOU - BOS
1 stop14h 25mAer Lingus
Deal found 9/15$519
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:10 pmBOS - SOU
1 stop10h 35mMultiple Airlines
Thu 11/68:10 pmSOU - BOS
2 stops53h 45mMultiple Airlines
Deal found 9/15$647
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:10 pmBOS - SOU
1 stop32h 00mDelta
Tue 12/25:30 pmSOU - BOS
1 stop24h 50mDelta
Deal found 9/15$685
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/238:50 pmBOS - SOU
1 stop15h 35mDelta
Mon 12/16:05 pmSOU - BOS
1 stop24h 15mDelta
Deal found 9/15$710
This Netflights deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:05 pmBOS - SOU
2 stops15h 00mVirgin Atlantic
Thu 11/68:50 amSOU - BOS
2 stops17h 25mVirgin Atlantic
Deal found 9/15$720
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:59 amBOS - SOU
2 stops17h 11mDelta
Tue 12/28:40 amSOU - BOS
2 stops16h 20mDelta
Deal found 9/15$724
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/254:50 pmBOS - SOU
1 stop10h 55mDelta
Thu 10/29:20 amSOU - BOS
1 stop12h 10mDelta
Deal found 9/16$735

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Portsmouth 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 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Boston to Portsmouth that are best for you.

Fly from

Boston

Fly to

Portsmouth

Route

Depart

Return

Price

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 10/30

6:10 pm-8:45 am

1 stop10h 35m

Southampton Eastleigh

Thu 11/6

9:30 am-6:55 pm

1 stop14h 25m

$519

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 10/30

6:10 pm-8:45 am

1 stop10h 35m

Southampton Eastleigh

Thu 11/6

8:10 pm-8:55 pm

2 stops53h 45m

$647

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Tue 11/25

7:10 pm-8:20 am

1 stop32h 10m

Southampton Eastleigh

Tue 12/2

5:30 pm-6:55 pm

1 stop30h 25m

$685

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sun 11/23

7:10 pm-8:10 am

1 stop32h 00m

Southampton Eastleigh

Tue 12/2

5:30 pm-1:20 pm

1 stop24h 50m

$685

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sun 11/23

8:50 pm-5:25 pm

1 stop15h 35m

Southampton Eastleigh

Mon 12/1

6:05 pm-1:20 pm

1 stop24h 15m

$710

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Tue 11/25

9:59 am-8:10 am

2 stops17h 11m

Southampton Eastleigh

Mon 12/1

6:05 pm-1:20 pm

1 stop24h 15m

$714

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Mon 11/24

1:00 pm-8:10 am

2 stops14h 10m

Southampton Eastleigh

Mon 12/1

6:05 pm-1:20 pm

1 stop24h 15m

$714

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 10/30

1:05 pm-8:05 am

2 stops15h 00m

Southampton Eastleigh

Thu 11/6

8:50 am-9:15 pm

2 stops17h 25m

$720

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Wed 3/11

10:20 pm-8:45 am

1 stop30h 25m

$329

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Wed 3/11

8:50 pm-6:30 pm

3 stops17h 40m

$366

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 12 results
1
2

Best time to book a flight from Boston to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Boston with our price prediction graph.
Estimated round-trip 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 Boston to Portsmouth

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

Currently, November is the cheapest month in which you can book a flight from Boston to Portsmouth (average of $661). Flying from Boston to Portsmouth in June is currently the most expensive (average of $1,097). 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 BOS to P0R?

Find hourly flight availability from Boston to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

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.

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

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

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

Weekly flight availability from Boston to Portsmouth

Explore weekly flight availability from Boston to Portsmouth. 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 September 17, 2025.

The most flights from BOS to P0R are scheduled on a Wednesday (36 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (23 on average).

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. 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 Portsmouth. Reviews last updated September 17, 2025.
See what other customers who have flown with Delta, KLM, and 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.
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,386 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Aer Lingus
7.2
Good
1,277 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Boston to Portsmouth. 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 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 19 different airlines.

  • How long is the flight from Boston to Portsmouth?

    For as low as $519, Aer Lingus can have you in Portsmouth from Boston in 10h 35m. There are 3228 mi between Boston and Portsmouth. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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: Aeromexico (100%), Gulf Air (87%), Air France( 84%).

  • What are the cheapest flights from Boston to Portsmouth?

    While on average a flight from Boston to Portsmouth is generally $1,829, our data shows the cheapest flight currently is $213. When looking at the most popular route, (Boston Logan Intl - Southampton Eastleigh), you can expect to pay $735 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.

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

    Currently, November is the cheapest month in which you can book a flight from Boston to Portsmouth (average of $661). Flying from Boston to Portsmouth in June is currently the most expensive (average of $1,097). 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

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Alternative routes for Boston to Portsmouth

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

Discover the top 10 airlines that operate flights from Boston to Portsmouth. 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 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$283Average$602FlexibilityNo cancel feeOn-time79%
TAP AIR PORTUGALCheapest$367Average$442FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$380Average$631FlexibilityNo cancel feeOn-time62%
PLAYCheapest$380Average$585FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$383Average$624FlexibilityNo cancel feeOn-time72%
KLMCheapest$383Average$714FlexibilityNo cancel feeOn-time75%
DeltaCheapest$387Average$837FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$391Average$586FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$392Average$624FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$393Average$657FlexibilityNo cancel feeOn-time77%

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