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Portsmouth

$345+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LHR
Aug 12 — Aug 191
Wed 8/12
Wed 8/19
1 adult, Economy
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Cheap 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 July 13, 2026.

This Trip.com deal was found by Cheapflights users on 7/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:00 pm
BOS
-
SOU
2 stops15h 30m
Multiple Airlines
Mon 8/319:20 am
SOU
-
BOS
2 stops14h 30m
Multiple Airlines
Deal found 7/9$726
This Mytrip deal was found by Cheapflights users on 7/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:00 pm
BOS
-
SOU
2 stops15h 30m
Multiple Airlines
Fri 8/289:20 am
SOU
-
BOS
2 stops14h 30m
Multiple Airlines
Deal found 7/10$769
This Kiwi.com deal was found by Cheapflights users on 7/9. 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.
Mon 8/245:25 pm
BOS
-
SOU
1 stop10h 15m
Aer Lingus
Mon 8/319:20 am
SOU
-
BOS
1 stop10h 35m
Aer Lingus
Deal found 7/9$844
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Fri 8/215:25 pm
BOS
-
SOU
1 stop10h 15m
Aer Lingus
Fri 8/289:20 am
SOU
-
BOS
1 stop10h 35m
Aer Lingus
Deal found 7/10$900
This Kiwi.com deal was found by Cheapflights users on 7/12. 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.
Sun 11/17:50 pm
BOS
-
SOU
2 stops16h 25m
Multiple Airlines
Mon 11/169:20 am
SOU
-
BOS
1 stop14h 35m
Multiple Airlines
Deal found 7/12$925
This Kiwi.com deal was found by Cheapflights users on 7/10. 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 7/3011:35 pm
BOS
-
SOU
1 stop15h 05m
Multiple Airlines
Fri 8/711:50 am
SOU
-
BOS
2 stops36h 25m
Multiple Airlines
Deal found 7/10$959
This Mytrip deal was found by Cheapflights users on 7/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:40 am
BOS
-
SOU
2 stops25h 10m
Multiple Airlines
Mon 8/177:55 pm
SOU
-
BOS
3 stops31h 43m
Multiple Airlines
Deal found 7/13$980

Find flight deals from Boston to Portsmouth

Keep the following information in mind while searching for Boston to Portsmouth flight deals. Data was last updated July 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$726
(Trip.com)

One-way from

$345
(Trip.com)

Popular in

June

Cheapest in

October

Average price

$806
Provider with most accurate pricing for Boston Logan Intl-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-London (LON) flights.
Search Deals
From Boston Logan Intl to Portsmouth
Search Deals
One-way flight from Boston Logan Intl to Portsmouth
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($210 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in July 2026
Search Deals

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 July 13, 2026.
Use the filters below to find and compare flights from Boston to Portsmouth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Tue 10/6

4:45 pm-8:45 am

1 stop11h 00m

Southampton Eastleigh

Mon 10/19

5:20 pm-1:15 pm

1 stop24h 55m

$1,070
Quickest round-trip

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Wed 10/7

4:45 pm-8:35 am

1 stop10h 50m

Southampton Eastleigh

Thu 10/15

9:05 am-4:36 pm

1 stop12h 31m

$1,070

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Wed 10/7

6:00 am-8:35 am

2 stops21h 35m

Southampton Eastleigh

Mon 10/19

5:20 pm-1:15 pm

1 stop24h 55m

$1,074

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Tue 10/6

9:10 am-8:45 am

2 stops18h 35m

Southampton Eastleigh

Tue 10/20

9:05 am-4:36 pm

1 stop12h 31m

$1,074

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Wed 11/18

9:55 am-8:10 am

2 stops17h 15m

Southampton Eastleigh

Wed 11/25

5:30 pm-1:25 pm

1 stop24h 55m

$1,075

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Wed 11/18

3:34 pm-5:00 pm

2 stops20h 26m

Southampton Eastleigh

Thu 11/26

5:30 pm-1:25 pm

1 stop24h 55m

$1,075

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Tue 10/6

9:15 pm-7:30 pm

1 stop17h 15m

Southampton Eastleigh

Sun 10/18

9:20 am-6:50 pm

1 stop14h 30m

$1,080

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Fri 8/7

11:53 am-8:45 am

2 stops15h 52m

Southampton Eastleigh

Fri 8/14

9:15 am-4:37 pm

1 stop12h 22m

$1,272

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 8/6

7:02 am-7:30 pm

2 stops31h 28m

Southampton Eastleigh

Sun 8/16

5:20 pm-10:48 am

2 stops46h 28m

$1,281

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Mon 8/24

5:25 pm-8:40 am

1 stop10h 15m

Southampton Eastleigh

Mon 9/7

8:00 pm-2:55 pm

1 stop23h 55m

$1,338

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Showing 1-10 of 18 resultsSorted by cheapest first
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 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 July 13, 2026.

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.

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 July 13, 2026.

The most flights from BOS to P0R are scheduled on a Friday (38 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (28 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 July 13, 2026.
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
1,666 reviews

Comfort

7.2

Crew

8.1

Entertainment

7.0

Overall

7.3

Boarding

7.4

Food

6.6

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
1,666 reviews
Aer Lingus
7.3
Good
1,666 reviews

Comfort

7.2

Crew

8.1

Entertainment

7.0

Overall

7.3

Boarding

7.4

Food

6.6

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

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 17 different airlines.

  • How long is the flight from Boston to Portsmouth?

    For as low as $1,070, Delta can have you in Portsmouth from Boston in 11h. There are 3228 mi between Boston and Portsmouth.

  • 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 (92%), JetBlue (85%), TAP AIR PORTUGAL( 85%).

  • What are the cheapest flights from Boston to Portsmouth?

    While on average a flight from Boston to Portsmouth is generally $2,718, our data shows the cheapest flight currently is $283. When looking at the most popular route, (Boston Logan Intl - Southampton Eastleigh), you can expect to pay $810 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

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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 July 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$256Average$632FlexibilityNo cancel feeOn-time62%
SWISSCheapest$320Average$875FlexibilityNo cancel feeOn-time79%
Virgin AtlanticCheapest$423Average$731FlexibilityNo cancel feeOn-time72%
TAP AIR PORTUGALCheapest$425Average$446FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$441Average$656FlexibilityNo cancel feeOn-time76%
FinnairCheapest$460Average$668FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$465Average$785FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$465Average$606FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$466Average$651FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$466Average$675FlexibilityNo cancel feeOn-time71%

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