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Portsmouth

$356+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LHR
Jun 27 — Jul 41
Sab 6/27
Sab 7/4
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 Mei 28, 2026.

This Mytrip deal was found by Cheapflights users on 5/24. 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.
Sen 7/138:50 pm
BOS
-
SOU
2 stops17h 40m
Multiple Airlines
Rab 7/299:20 am
SOU
-
BOS
2 stops17h 25m
Multiple Airlines
Deal found 5/24$889
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Jum 9/1110:05 am
BOS
-
SOU
2 stops42h 20m
Multiple Airlines
Min 9/279:20 am
SOU
-
BOS
1 stop10h 35m
Multiple Airlines
Deal found 5/25$901
This Mytrip deal was found by Cheapflights users on 5/23. 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.
Sen 7/135:25 pm
BOS
-
SOU
1 stop10h 15m
Aer Lingus
Rab 7/299:20 am
SOU
-
BOS
1 stop10h 35m
Aer Lingus
Deal found 5/23$941
This Mytrip deal was found by Cheapflights users on 5/25. 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.
Rab 6/175:10 am
BOS
-
SOU
3 stops33h 20m
Multiple Airlines
Sen 6/295:55 pm
SOU
-
BOS
3 stops44h 10m
Multiple Airlines
Deal found 5/25$967
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
Sel 12/85:50 pm
BOS
-
SOU
1 stop20h 40m
Aer Lingus
Sel 12/159:20 am
SOU
-
BOS
1 stop14h 35m
Aer Lingus
Deal found 5/26$980
This Orbitz deal was found by Cheapflights users on 5/23. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Kam 8/65:25 pm
BOS
-
SOU
1 stop10h 15m
Aer Lingus
Sen 8/249:20 am
SOU
-
BOS
1 stop10h 35m
Aer Lingus
Deal found 5/23$1,001
This Kiwi.com deal was found by Cheapflights users on 5/27. 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.
Rab 9/238:00 pm
BOS
-
SOU
2 stops18h 30m
Aer Lingus
Sab 10/39:20 am
SOU
-
BOS
1 stop10h 35m
Aer Lingus
Deal found 5/27$1,012

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 Mei 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$889
(Mytrip)

One-way from

$356
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$733
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. 19% potential increase in price ($151 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 Mei 28, 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

Sel 8/4

5:30 am-8:45 am

2 stops22h 15m

Southampton Eastleigh

Kam 8/13

6:05 pm-4:37 pm

1 stop27h 32m

$1,102
Quickest round-trip

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Kam 7/30

9:00 am-8:45 am

2 stops18h 45m

Southampton Eastleigh

Rab 8/12

9:15 am-4:37 pm

1 stop12h 22m

$1,102

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Kam 8/6

4:45 pm-8:45 am

1 stop11h 00m

Southampton Eastleigh

Min 8/16

5:30 pm-4:37 pm

1 stop28h 07m

$1,157

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sab 8/1

4:45 pm-8:45 am

1 stop11h 00m

Southampton Eastleigh

Min 8/16

5:30 pm-4:37 pm

1 stop28h 07m

$1,158

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Rab 8/5

4:45 pm-8:45 am

1 stop11h 00m

Southampton Eastleigh

Sen 8/17

6:05 pm-1:18 pm

1 stop24h 13m

$1,181

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sen 8/3

4:45 pm-8:45 am

1 stop11h 00m

Southampton Eastleigh

Sen 8/17

6:05 pm-1:18 pm

1 stop24h 13m

$1,181

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Min 7/19

4:40 pm-8:45 am

1 stop11h 05m

Southampton Eastleigh

Sel 7/21

6:05 pm-1:18 pm

1 stop24h 13m

$1,228

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Min 6/7

11:50 am-8:35 am

2 stops15h 45m

Southampton Eastleigh

Jum 6/19

9:05 am-11:14 pm

2 stops19h 09m

$1,286

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Jum 7/3

4:40 pm-8:45 am

1 stop11h 05m

Southampton Eastleigh

Min 7/5

5:30 pm-1:18 pm

1 stop24h 48m

$1,352
Cheapest one-way

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Rab 9/23

8:50 pm-8:45 am

3 stops30h 55m

$356

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/27

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 Mei 28, 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 Mei 28, 2026.

The most flights from BOS to P0R are scheduled on a Monday (39 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (24 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 Mei 28, 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
1,587 reviews

Boarding

7.4

Comfort

7.2

Crew

8.1

Overall

7.3

Food

6.7

Entertainment

7.0

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
1,587 reviews
Aer Lingus
7.3
Good
1,587 reviews

Boarding

7.4

Comfort

7.2

Crew

8.1

Overall

7.3

Food

6.7

Entertainment

7.0

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, Delta can have you in Portsmouth from Boston in 11h. 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: Scandinavian Airlines (98%), JetBlue (93%), TAP AIR PORTUGAL( 93%).

  • What are the cheapest flights from Boston to Portsmouth?

    While on average a flight from Boston to Portsmouth is generally $2,028, 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 $658 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 Mei 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$257Average$611FlexibilityNo cancel feeOn-time62%
TAP AIR PORTUGALCheapest$425Average$450FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$429Average$580FlexibilityNo cancel feeOn-time76%
FinnairCheapest$460Average$639FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$460Average$655FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$463Average$772FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$465Average$578FlexibilityNo cancel feeOn-time70%
IberiaCheapest$465Average$607FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$466Average$666FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$471Average$723FlexibilityNo cancel feeOn-time72%

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