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Portsmouth

$361+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LHR
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$669
(Delta)

One-way from

$361
(KLM)

Popular in

July

Cheapest in

January

Average price

$1,195
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. 15% potential increase in price ($176 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This Delta deal was found by Cheapflights users on 7/1. 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 8/176:45 pmBOS - SOU
1 stop9h 00mDelta
Tue 8/269:20 amSOU - BOS
1 stop14h 05mDelta
Deal found 7/1$669
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/155:30 pmBOS - SOU
1 stop10h 10mAer Lingus
Fri 8/229:40 amSOU - BOS
1 stop14h 05mAer Lingus
Deal found 7/1$743
This KLM deal was found by Cheapflights users on 7/1. 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.
Fri 7/114:45 pmBOS - SOU
1 stop11h 00mKLM
Sat 5/169:20 amSOU - BOS
1 stop12h 10mKLM
Deal found 7/1$761
This Virgin Atlantic deal was found by Cheapflights users on 7/1. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/118:15 pmBOS - SOU
1 stop15h 45mVirgin Atlantic
Sat 5/169:20 amSOU - BOS
2 stops19h 12mVirgin Atlantic
Deal found 7/1$771
This Mytrip deal was found by Cheapflights users on 7/2. 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 10/35:40 pmBOS - SOU
3 stops33h 55mMultiple Airlines
Fri 10/108:15 pmSOU - BOS
2 stops24h 20mMultiple Airlines
Deal found 7/2$902

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 3, 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

Sun 8/17

6:45 pm-8:45 am

1 stop9h 00m

Southampton Eastleigh

Tue 8/26

9:20 am-6:25 pm

1 stop14h 05m

$669

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Fri 8/15

5:30 pm-8:40 am

1 stop10h 10m

Southampton Eastleigh

Fri 8/22

9:40 am-6:45 pm

1 stop14h 05m

$743

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sat 8/16

4:50 pm-8:45 am

1 stop10h 55m

Southampton Eastleigh

Sat 8/23

5:35 pm-1:35 pm

1 stop25h 00m

$777

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Fri 10/3

5:40 pm-8:35 am

3 stops33h 55m

Southampton Eastleigh

Fri 10/10

8:15 pm-3:35 pm

2 stops24h 20m

$902

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Mon 10/6

4:50 pm-5:00 pm

1 stop19h 10m

$361

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Mon 10/6

12:55 pm-8:45 am

2 stops14h 50m

$366

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Mon 8/4

5:30 pm-8:40 am

1 stop10h 10m

$4,197

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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 $1,098). 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 July 3, 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 July 3, 2025.

The most flights from BOS to P0R are scheduled on a Wednesday (36 on average). You will have fewer flight options on Sunday, 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 July 3, 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
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
1,367 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
7.1
Good
1,144 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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.

  • What are the cheapest airlines to fly from Boston to Portsmouth one-way?

    For one-way options, check prices for KLM. According to our data, you can fly for as low as $361. Users have also found prices from $366 and $4,197 on Delta and Aer Lingus, respectively.

  • 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: JetBlue (95%), TAP AIR PORTUGAL (95%), KLM( 85%).

  • What are the cheapest flights from Boston to Portsmouth?

    While on average a flight from Boston to Portsmouth is generally $3,165, our data shows the cheapest flight currently is $263. When looking at the most popular route, (Boston Logan Intl - Southampton Eastleigh), you can expect to pay $669 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 $1,098). 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.

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$290Average$585FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$325Average$507FlexibilityNo cancel feeOn-time77%
PLAYCheapest$354Average$477FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$356Average$578FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$383Average$646FlexibilityNo cancel feeOn-time72%
KLMCheapest$387Average$736FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$391Average$608FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$393Average$653FlexibilityNo cancel feeOn-time70%
JetBlueCheapest$394Average$691FlexibilityNo cancel feeOn-time62%
DeltaCheapest$398Average$915FlexibilityNo cancel feeOn-timeN/A

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