HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portsmouth

$57+ Cheap flights from Portsmouth

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — JFK
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

What to know about flights from Portsmouth

Discover essential information about flights departing from Portsmouth, including flight schedules, destinations, airlines operating at the Portsmouth airport, and any specific guidelines or requirements for travelers. Please note that the information is based on the most recent updates available. Data last updated March 10, 2026.

Cheapest airline

Ryanair
On average, Ryanair currently has the cheapest one-way flight from Portsmouth (avg. price of $153).
Search Deals

Find flights from Portsmouth

Cheapest flights from Portsmouth
Explore the most affordable flight options available from Portsmouth. Find the lowest fares based on data from user searches, with prices last updated on March 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/5. 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 4/137:20 pm
SOU
-
BOS
1 stop30h 45m
Multiple Airlines
Mon 4/208:50 pm
BOS
-
SOU
2 stops15h 50m
Multiple Airlines
Deal found 3/5$587
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Sat 4/189:20 am
SOU
-
LAX
1 stop17h 05m
Aer Lingus
Sat 4/258:10 pm
LAX
-
SOU
1 stop15h 20m
Aer Lingus
Deal found 3/6$605
This British Airways deal was found by Cheapflights users on 3/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:50 am
SOU
-
ATH
2 stops27h 35m
British Airways
Wed 5/204:15 pm
ATH
-
SOU
2 stops19h 10m
British Airways
Deal found 3/7$628
This Booking.com deal was found by Cheapflights users on 3/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:20 am
SOU
-
EWR
2 stops34h 39m
Multiple Airlines
Mon 4/275:45 pm
EWR
-
SOU
2 stops20h 45m
Multiple Airlines
Deal found 3/7$634
This British Airways deal was found by Cheapflights users on 3/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:50 am
SOU
-
ATH
2 stops27h 35m
British Airways
Mon 5/187:30 pm
ATH
-
SOU
2 stops24h 10m
British Airways
Deal found 3/7$639
This British Airways deal was found by Cheapflights users on 3/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:50 am
SOU
-
ATH
2 stops17h 25m
British Airways
Tue 5/196:30 pm
ATH
-
SOU
2 stops20h 25m
British Airways
Deal found 3/7$640
This British Airways deal was found by Cheapflights users on 3/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:50 am
SOU
-
ATH
2 stops27h 35m
British Airways
Sun 5/174:55 pm
ATH
-
SOU
2 stops18h 30m
British Airways
Deal found 3/7$643
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Sun 4/199:20 am
SOU
-
LAX
1 stop17h 05m
Aer Lingus
Sun 4/268:10 pm
LAX
-
SOU
1 stop15h 20m
Aer Lingus
Deal found 3/9$644
This British Airways deal was found by Cheapflights users on 3/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:35 pm
SOU
-
ATH
2 stops21h 15m
British Airways
Mon 5/188:50 pm
ATH
-
SOU
2 stops22h 50m
British Airways
Deal found 3/7$651
This British Airways deal was found by Cheapflights users on 3/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:50 am
SOU
-
ATH
2 stops17h 25m
British Airways
Sun 5/174:55 pm
ATH
-
SOU
2 stops18h 30m
British Airways
Deal found 3/7$655
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 4/229:20 am
SOU
-
JFK
1 stop15h 00m
Aer Lingus
Wed 4/294:55 pm
JFK
-
SOU
1 stop10h 45m
Aer Lingus
Deal found 3/8$655
This British Airways deal was found by Cheapflights users on 3/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:50 am
SOU
-
ATH
2 stops27h 35m
British Airways
Sat 5/166:20 pm
ATH
-
SOU
2 stops28h 25m
British Airways
Deal found 3/7$660

Find flights from Portsmouth within your budget

 
Find flights departing from Portsmouth that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on March 10, 2026. In the last 7 days, Cheapflights users made a total of 2,558,603 searches

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sat 4/18

9:20 am-6:25 pm

1 stop17h 05m

Los Angeles Los Angeles

Sat 4/25

8:10 pm-7:30 pm

1 stop15h 20m

$607

SouthamptonBoston

SOU - BOS

SOUBOS

Southampton Eastleigh

Mon 4/13

7:20 pm-9:05 pm

1 stop30h 45m

Boston Logan Intl

Mon 4/20

5:25 pm-8:40 am

1 stop10h 15m

$627

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Wed 5/6

6:50 am-2:10 am

2 stops17h 20m

Athens Eleftherios V.

Wed 5/20

2:05 pm-9:25 am

2 stops21h 20m

$640

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Tue 4/7

7:55 pm-3:20 pm

2 stops17h 25m

Athens Eleftherios V.

Tue 4/21

8:00 pm-2:45 pm

2 stops20h 45m

$660

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Mon 5/4

6:20 pm-2:10 am

2 stops29h 50m

Athens Eleftherios V.

Sat 5/16

6:20 pm-8:45 pm

2 stops28h 25m

$672

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Mon 4/27

6:20 pm-5:35 pm

2 stops21h 15m

Athens Eleftherios V.

Fri 5/1

5:20 pm-11:45 am

2 stops20h 25m

$672

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Mon 4/6

7:55 pm-2:10 am

2 stops28h 15m

Athens Eleftherios V.

Mon 4/20

8:50 pm-2:45 pm

2 stops19h 55m

$677

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Sun 4/19

9:20 am-7:20 pm

1 stop15h 00m

New York John F Kennedy Intl

Sun 4/26

4:55 pm-8:40 am

1 stop10h 45m

$682

SouthamptonSplit

SOU - SPU

SOUSPU

Southampton Eastleigh

Sun 6/7

2:50 pm-10:55 am

2 stops19h 05m

Split

Tue 6/16

7:35 pm-12:05 pm

2 stops17h 30m

$692

SouthamptonSplit

SOU - SPU

SOUSPU

Southampton Eastleigh

Mon 6/8

2:25 pm-6:35 pm

2 stops27h 10m

Split

Tue 6/16

7:35 pm-12:05 pm

2 stops17h 30m

$707

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Portsmouth

Have a flexible travel schedule? Discover the best time to fly from Portsmouth 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.

Travel insights for flights from Portsmouth

Get recent, data-driven insights about flights from Portsmouth including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Portsmouth?

Currently, August is the cheapest month in which you can book a flight from Portsmouth (average of $130). Flying from Portsmouth in July will prove the most costly (average of $455). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

When is the cheapest time to fly from Portsmouth?

Use this chart to determine the cheapest time to fly round-trip from Portsmouth to John F Kennedy Intl. Price data was last updated on February 21, 2026.

Those who are seeking the cheapest fare on flights departing from Portsmouth would be wise to consider leaving during Sunday evenings when prices are typically at their lowest. When considering other options, price-conscious travelers should avoid Friday mornings when fares are usually the most expensive.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Related info for your journey

Access useful and relevant information related to your journey from Portsmouth. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated March 10, 2026.

  • What is the cheapest airport to fly out of Portsmouth?

    Barranquilla E Cortissoz airport offers the cheapest routes to Fort Lauderdale, from $22; whereas Istanbul airport is typically cheaper if you're flying to Dubai, from $23. It's best to make sure you are flexible on dates to find the cheapest possible flight options for your journey.

  • What is the cheapest month to fly from Portsmouth?

    August is currently the cheapest month to fly from Portsmouth. At this moment in time July is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.

  • Where are the cheapest places to fly to from Portsmouth?

    Check out the cheapest flights from Portsmouth to embark to:
    Fly from Barranquilla to Medellín from $22 round trip
    Fly from Istanbul to Ankara from $23 round trip
    Fly from Cheongju to Jeju City from $24 round trip
    Fly from Medellín to Cartagena from $30 round trip
    Fly from Medellín to Bogotá from $31 round trip

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights