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Portsmouth

$347+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LHR
Jul 3 — Jul 101
Fri 7/3
Fri 7/10
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 June 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/30. 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 9/611:35 pm
BOS
-
SOU
1 stop14h 15m
Multiple Airlines
Sat 9/197:25 pm
SOU
-
BOS
2 stops31h 20m
Multiple Airlines
Deal found 5/30$820
This Mytrip deal was found by Cheapflights users on 5/31. 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.
Wed 7/153:35 pm
BOS
-
SOU
2 stops22h 55m
Multiple Airlines
Wed 7/228:00 pm
SOU
-
BOS
2 stops25h 03m
Multiple Airlines
Deal found 5/31$874
This Trip.com deal was found by Cheapflights users on 5/29. 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 11/27:50 pm
BOS
-
SOU
2 stops18h 40m
Multiple Airlines
Thu 11/58:00 pm
SOU
-
BOS
2 stops26h 50m
Multiple Airlines
Deal found 5/29$900
This Mytrip deal was found by Cheapflights users on 6/2. 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 7/173:35 pm
BOS
-
SOU
2 stops22h 55m
Multiple Airlines
Fri 7/246:05 pm
SOU
-
BOS
3 stops25h 36m
Multiple Airlines
Deal found 6/2$952
This Trip.com deal was found by Cheapflights users on 5/29. 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 11/25:50 pm
BOS
-
SOU
1 stop9h 50m
Aer Lingus
Thu 11/58:00 pm
SOU
-
BOS
1 stop27h 55m
Aer Lingus
Deal found 5/29$954
This Mytrip deal was found by Cheapflights users on 5/29. 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 7/1310:40 am
BOS
-
SOU
2 stops27h 50m
Multiple Airlines
Mon 7/2012:20 pm
SOU
-
BOS
3 stops34h 47m
Multiple Airlines
Deal found 5/29$959
This Kiwi.com deal was found by Cheapflights users on 5/29. 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.
Wed 11/45:00 pm
BOS
-
SOU
2 stops18h 35m
Multiple Airlines
Sun 11/89:20 am
SOU
-
BOS
1 stop14h 35m
Multiple Airlines
Deal found 5/29$960
This Kiwi.com deal was found by Cheapflights users on 5/29. 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 11/15:50 pm
BOS
-
SOU
1 stop9h 50m
Multiple Airlines
Mon 11/27:55 pm
SOU
-
BOS
2 stops23h 45m
Multiple Airlines
Deal found 5/29$966
This Kiwi.com deal was found by Cheapflights users on 6/1. 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.
Sun 7/127:10 am
BOS
-
SOU
2 stops24h 25m
Multiple Airlines
Tue 7/289:15 am
SOU
-
BOS
1 stop10h 40m
Multiple Airlines
Deal found 6/1$972
This Kiwi.com deal was found by Cheapflights users on 5/29. 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 11/15:50 pm
BOS
-
SOU
1 stop9h 50m
Multiple Airlines
Fri 11/67:50 pm
SOU
-
BOS
2 stops23h 50m
Multiple Airlines
Deal found 5/29$977

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 June 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$820
(Kiwi.com)

One-way from

$347
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$892
Provider with most accurate pricing for Boston Logan Intl-London (LON) flight deals.
Search Deals
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. 20% potential increase in price ($158 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 3, 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

Mon 7/13

10:40 am-7:30 pm

2 stops27h 50m

Southampton Eastleigh

Mon 7/20

12:20 pm-6:07 pm

3 stops34h 47m

$959

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 8/6

4:45 pm-8:45 am

1 stop11h 00m

Southampton Eastleigh

Sun 8/16

5:30 pm-4:37 pm

1 stop28h 07m

$1,157

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sun 8/2

4:45 pm-5:35 pm

1 stop19h 50m

Southampton Eastleigh

Sun 8/9

5:30 pm-4:37 pm

1 stop28h 07m

$1,276
Quickest round-trip

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 8/6

4:45 pm-8:45 am

1 stop11h 00m

Southampton Eastleigh

Sun 8/16

9:15 am-10:43 pm

2 stops18h 28m

$1,282

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Tue 6/9

4:40 pm-8:35 am

1 stop10h 55m

Southampton Eastleigh

Mon 6/22

5:20 pm-1:05 pm

1 stop24h 45m

$1,378

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Mon 6/15

6:55 pm-4:50 pm

1 stop16h 55m

Southampton Eastleigh

Mon 6/22

5:20 pm-1:05 pm

1 stop24h 45m

$1,381

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Mon 6/15

4:40 pm-4:50 pm

1 stop19h 10m

Southampton Eastleigh

Mon 6/22

5:20 pm-1:05 pm

1 stop24h 45m

$1,381

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Wed 6/24

5:30 am-8:35 am

2 stops22h 05m

Southampton Eastleigh

Tue 7/7

6:05 pm-1:18 pm

1 stop24h 13m

$1,386
Cheapest one-way

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 7/16

8:10 pm-7:30 pm

2 stops42h 20m

$388

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 9/24

8:50 pm-11:45 am

3 stops33h 55m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/1

Showing 1-10 of 16 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 June 3, 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 June 3, 2026.

The most flights from BOS to P0R are scheduled on a Monday (36 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (25 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 June 3, 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
1,592 reviews

Crew

8.1

Overall

7.3

Boarding

7.4

Comfort

7.2

Entertainment

7.0

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.
Aer Lingus
7.3
Good
1,592 reviews
Aer Lingus
7.3
Good
1,592 reviews

Crew

8.1

Overall

7.3

Boarding

7.4

Comfort

7.2

Entertainment

7.0

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.

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 16 different airlines.

  • How long is the flight from Boston to Portsmouth?

    For as low as $1,157, KLM 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 (93%), Scandinavian Airlines (87%), Finnair( 86%).

  • What are the cheapest flights from Boston to Portsmouth?

    While on average a flight from Boston to Portsmouth is generally $2,035, our data shows the cheapest flight currently is $334. When looking at the most popular route, (Boston Logan Intl - Southampton Eastleigh), you can expect to pay $784 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 June 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$256Average$594FlexibilityNo cancel feeOn-time62%
TAP AIR PORTUGALCheapest$425Average$450FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$441Average$585FlexibilityNo cancel feeOn-time76%
FinnairCheapest$454Average$641FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$460Average$657FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$463Average$768FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$465Average$616FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$465Average$579FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$466Average$666FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$470Average$725FlexibilityNo cancel feeOn-time72%

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