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Cheap flights from Boston to Southampton from £440

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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOU
20 Jul — 27 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Southampton

Enter your travel dates to find the best prices.

Cheapest flights from Boston to Southampton
Explore the most affordable flight options available from Boston to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 June 2026.

Tue 4/817:25
BOS
-
SOU
1 stop9h 40m
Aer Lingus
Tue 11/809:15
SOU
-
BOS
1 stop10h 40m
Aer Lingus
Deal found 20/6£632
Tue 4/817:25
BOS
-
SOU
2 stops11h 50m
Multiple Airlines
Tue 11/809:15
SOU
-
BOS
1 stop10h 40m
Multiple Airlines
Deal found 20/6£655
Sat 1/820:50
BOS
-
SOU
2 stops30h 50m
Multiple Airlines
Mon 10/809:20
SOU
-
BOS
1 stop10h 35m
Multiple Airlines
Deal found 16/6£694
Mon 28/923:00
BOS
-
SOU
2 stops15h 30m
Multiple Airlines
Sat 3/1007:50
SOU
-
BOS
2 stops16h 00m
Multiple Airlines
Deal found 18/6£739
Sat 1/817:25
BOS
-
SOU
1 stop10h 10m
Aer Lingus
Mon 10/809:20
SOU
-
BOS
1 stop10h 35m
Aer Lingus
Deal found 16/6£748

Find flight deals from Boston to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Southampton (SOU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 20 June 2026.

Round-trip from

£632

One-way from

£440

Popular in

June

Cheapest in

October

Average price

£746
Aer Lingus
  • Aer Lingus
  • 4/8-11/8
  • 2 total stops
  • 20h 20m total
  • Boston to Southampton
Search Deals
Delta
  • Delta
  • 5/7
  • 1 total stop
  • 17h 35m total
  • Boston to Southampton
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£115 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Boston to Southampton 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 858,174 searches. Data last updated 20 June 2026.
Use the filters below to find and compare flights from Boston to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sun 22/11

20:55-08:10

1 stop30h 15m

Southampton Eastleigh

Mon 30/11

17:30-13:25

1 stop24h 55m

£806

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Fri 24/7

05:45-16:50

2 stops30h 05m

Southampton Eastleigh

Sun 26/7

14:45-18:07

3 stops32h 22m

£806

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Tue 6/10

16:45-08:45

1 stop11h 00m

Southampton Eastleigh

Sun 18/10

17:20-16:36

1 stop28h 16m

£812
Fastest return journey

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Mon 14/9

16:40-08:35

1 stop10h 55m

Southampton Eastleigh

Mon 16/11

08:40-19:01

1 stop15h 21m

£816

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Wed 2/9

20:25-16:50

1 stop15h 25m

Southampton Eastleigh

Mon 14/9

17:20-16:35

1 stop28h 15m

£816

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Fri 4/9

16:40-16:50

1 stop19h 10m

Southampton Eastleigh

Sun 13/9

09:15-16:35

1 stop12h 20m

£816

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Tue 6/10

12:00-08:45

2 stops15h 45m

Southampton Eastleigh

Sun 18/10

09:15-16:36

1 stop12h 21m

£816

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sat 19/9

16:40-08:45

1 stop11h 05m

Southampton Eastleigh

Sun 15/11

17:30-19:01

1 stop30h 31m

£816

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 17/9

11:00-08:35

2 stops16h 35m

Southampton Eastleigh

Tue 17/11

17:30-13:25

1 stop24h 55m

£817

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 17/9

11:00-16:50

2 stops24h 50m

Southampton Eastleigh

Wed 18/11

17:30-13:25

1 stop24h 55m

£817

Flights are sorted by cheapest return flights first.

Deals found on 16/6

Showing 1-10 of 19 resultsSorted by cheapest first
1
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Best time to book a flight from Boston to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Boston with our price prediction graph.
Estimated return 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.

Related info for your journey

Find useful and relevant information for your journey from Boston to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boston to Southampton?

    Departing from Boston to Southampton will take you 11h. The distance from Boston to Southampton is about 3228 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Boston to Southampton that include hotel bookings?

    Yes. In addition to deals on Boston to Southampton flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Boston to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Southampton.

  • Can I find deals for business class flights from Boston to Southampton?

    Yes. Cheapflights offers flight deals from Boston to Southampton 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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Cheapflights makes it easy to find Boston to Southampton flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Boston to Southampton?

Millions of users choose and trust Cheapflights to book the best flight deals from Boston to Southampton for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Boston to Southampton with no change fees?

Need flexible booking options for your flight to Southampton from Boston? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Boston to Southampton become cheaper?

Not ready to book yet? You can track prices for flights from Boston to Southampton on Cheapflights with our Price Alert feature and get notified when better prices are available.

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