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Portsmouth

$232+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LHR
ago. 23 — ago. 301
sáb. 8/23
sáb. 8/30
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 agosto 18, 2025.

Round-trip from

$654
(Kiwi.com)

One-way from

$232
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,010
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. 10% potential increase in price ($114 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
dom. 9/145:30 pmBOS - SOU
1 stop10h 40mAer Lingus
dom. 9/219:10 amSOU - BOS
1 stop14h 35mAer Lingus
Deal found 8/17$654
This Trip.com deal was found by Cheapflights users on 8/17. 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.
dom. 9/145:05 pmBOS - SOU
2 stops21h 25mMultiple Airlines
dom. 9/219:10 amSOU - BOS
2 stops35h 45mMultiple Airlines
Deal found 8/17$672
This KLM deal was found by Cheapflights users on 8/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/106:45 pmBOS - SOU
1 stop17h 15mKLM
vie. 9/129:20 amSOU - BOS
2 stops14h 45mKLM
Deal found 8/17$732
This Delta deal was found by Cheapflights users on 8/16. 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.
dom. 8/178:15 pmBOS - SOU
1 stop16h 35mDelta
sáb. 8/309:20 amSOU - BOS
1 stop12h 15mDelta
Deal found 8/16$778
This Delta deal was found by Cheapflights users on 8/17. 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.
dom. 9/147:25 amBOS - SOU
2 stops20h 20mDelta
lun. 1/199:25 amSOU - BOS
1 stop33h 00mDelta
Deal found 8/17$782
This Delta deal was found by Cheapflights users on 8/16. 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.
dom. 9/146:45 pmBOS - SOU
1 stop9h 00mDelta
jue. 9/189:20 amSOU - BOS
2 stops14h 45mDelta
Deal found 8/16$788
This Delta deal was found by Cheapflights users on 8/17. 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.
mié. 9/101:08 pmBOS - SOU
2 stops14h 37mDelta
vie. 9/129:20 amSOU - BOS
2 stops19h 39mDelta
Deal found 8/17$792
This Delta deal was found by Cheapflights users on 8/17. 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.
vie. 9/124:50 pmBOS - SOU
1 stop10h 55mDelta
vie. 1/169:00 amSOU - BOS
1 stop14h 55mDelta
Deal found 8/17$820
This Delta deal was found by Cheapflights users on 8/17. 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.
mié. 9/101:08 pmBOS - SOU
2 stops14h 37mDelta
lun. 9/299:20 amSOU - BOS
1 stop12h 10mDelta
Deal found 8/17$824
This Delta deal was found by Cheapflights users on 8/17. 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.
lun. 9/156:45 pmBOS - SOU
1 stop9h 00mDelta
vie. 1/165:30 pmSOU - BOS
1 stop24h 55mDelta
Deal found 8/17$828
This KLM deal was found by Cheapflights users on 8/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/66:45 pmBOS - SOU
1 stop9h 00mKLM
dom. 10/199:20 amSOU - BOS
1 stop12h 10mKLM
Deal found 8/18$830

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 agosto 18, 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

dom. 9/14

5:30 pm-9:10 am

1 stop10h 40m

Southampton Eastleigh

dom. 9/21

9:10 am-6:45 pm

1 stop14h 35m

$654

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

dom. 9/14

5:05 pm-7:30 pm

2 stops21h 25m

Southampton Eastleigh

dom. 9/21

9:10 am-3:55 pm

2 stops35h 45m

$672

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

mié. 9/10

8:15 pm-5:00 pm

1 stop15h 45m

Southampton Eastleigh

vie. 9/12

9:20 am-7:05 pm

2 stops14h 45m

$732

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

dom. 9/14

8:15 pm-8:45 am

1 stop31h 30m

Southampton Eastleigh

dom. 1/18

5:45 pm-1:25 pm

1 stop24h 40m

$778

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

dom. 9/14

4:50 pm-8:45 am

1 stop10h 55m

Southampton Eastleigh

sáb. 1/17

9:25 am-1:25 pm

1 stop33h 00m

$778

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

dom. 9/14

6:45 pm-8:45 am

1 stop9h 00m

Southampton Eastleigh

vie. 9/19

9:20 am-4:30 pm

1 stop12h 10m

$778

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

dom. 9/14

6:45 pm-8:45 am

1 stop9h 00m

Southampton Eastleigh

mié. 9/17

9:20 am-4:30 pm

1 stop12h 10m

$778

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

dom. 9/14

6:45 pm-8:45 am

1 stop9h 00m

Southampton Eastleigh

mar. 1/20

5:30 pm-6:55 pm

1 stop30h 25m

$778

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

dom. 9/14

4:50 pm-8:45 am

1 stop10h 55m

Southampton Eastleigh

mié. 1/21

5:30 pm-1:25 pm

1 stop24h 55m

$778

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

mar. 10/7

9:40 pm-8:40 am

2 stops30h 00m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 16 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 agosto 18, 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 agosto 18, 2025.

The most flights from BOS to P0R are scheduled on a Monday (36 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (33 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 agosto 18, 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
7,981 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

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
1,385 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

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
1,220 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

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 $654, Aer Lingus can have you in Portsmouth from Boston in 10h 40m. 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 (88%), JetBlue( 87%).

  • What are the cheapest flights from Boston to Portsmouth?

    While on average a flight from Boston to Portsmouth is generally $1,770, our data shows the cheapest flight currently is $199. When looking at the most popular route, (Boston Logan Intl - Southampton Eastleigh), you can expect to pay $654 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 agosto 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$283Average$585FlexibilityNo cancel feeOn-time79%
TAP AIR PORTUGALCheapest$367Average$503FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$379Average$634FlexibilityNo cancel feeOn-time62%
PLAYCheapest$380Average$574FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$383Average$629FlexibilityNo cancel feeOn-time72%
KLMCheapest$385Average$731FlexibilityNo cancel feeOn-time75%
DeltaCheapest$387Average$839FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$391Average$590FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$392Average$626FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$423Average$522FlexibilityNo cancel feeOn-time77%

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