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Cheap flights from Boston to Southampton from £326

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOU
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 7 November 2025.

Sun 7/1217:10BOS - SOU
1 stop10h 35mAer Lingus
Sun 14/1209:30SOU - BOS
1 stop14h 25mAer Lingus
Deal found 6/11£419
Sun 7/1210:15BOS - SOU
3 stops24h 20mMultiple Airlines
Sun 14/1220:10SOU - BOS
2 stops22h 15mMultiple Airlines
Deal found 6/11£444
Sun 7/1206:05BOS - SOU
2 stops21h 05mDelta
Sun 14/1209:30SOU - BOS
2 stops18h 04mDelta
Deal found 6/11£554
Sun 7/1220:50BOS - SOU
1 stop15h 35mKLM
Sun 14/1209:30SOU - BOS
1 stop14h 25mKLM
Deal found 7/11£583
Mon 29/1221:20BOS - SOU
1 stop9h 35mAer Lingus
Fri 9/120:10SOU - BOS
1 stop22h 45mAer Lingus
Deal found 5/11£664
Thu 11/1221:20BOS - SOU
1 stop30h 25mAer Lingus
Sun 14/1220:10SOU - BOS
1 stop22h 40mAer Lingus
Deal found 5/11£669
Sat 20/1221:30BOS - SOU
2 stops41h 10mAer Lingus
Sat 27/1209:30SOU - BOS
2 stops29h 27mAer Lingus
Deal found 5/11£1,081
Sat 27/1217:20BOS - SOU
1 stop10h 25mAer Lingus
Sun 4/120:10SOU - BOS
1 stop22h 45mAer Lingus
Deal found 4/11£1,198

Cheap 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 7 November 2025.

Round-trip from

£419

One-way from

£326

Popular in

July

Cheapest in

February

Average price

£609
Aer Lingus
  • Aer Lingus
  • 7/12-14/12
  • 2 total stops
  • 25h 00m total
  • Boston to Southampton
Search Deals
Delta
  • Delta
  • 17/11
  • 1 total stop
  • 15h 10m total
  • Boston to Southampton
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£71 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 7 November 2025.
Use the filters below to find and compare flights from Boston to Southampton that are best for you.

Fly from

Boston

Fly to

Southampton

Route

Depart

Return

Price

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sun 7/12

17:10-08:45

1 stop10h 35m

Southampton Eastleigh

Sun 14/12

09:30-18:55

1 stop14h 25m

£419

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sun 7/12

21:20-14:05

2 stops35h 45m

Southampton Eastleigh

Sun 14/12

09:30-18:55

1 stop14h 25m

£512

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sun 7/12

05:29-08:10

2 stops21h 41m

Southampton Eastleigh

Sun 14/12

09:30-18:55

1 stop14h 25m

£547

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sun 7/12

20:50-17:25

1 stop15h 35m

Southampton Eastleigh

Sun 14/12

09:30-18:55

1 stop14h 25m

£583

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sun 29/3

18:40-08:50

1 stop9h 10m

Southampton Eastleigh

Wed 1/4

09:20-16:30

1 stop12h 10m

£621

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Tue 18/11

19:10-17:00

1 stop16h 50m

£326

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Mon 17/11

20:50-17:00

1 stop15h 10m

£326

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Wed 19/11

20:50-08:05

1 stop30h 15m

£326

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sun 21/12

21:30-11:55

2 stops33h 25m

£396

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 16/4

21:25-19:30

1 stop17h 05m

£402

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 14 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Boston to Southampton

What is the cheapest month to book a flight from Boston to Southampton?

Currently, August is the cheapest month in which you can book a flight from Boston to Southampton (average of £238). Flying from Boston to Southampton in June is currently the most expensive (average of £428). 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.

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 10h 35m. 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.

  • What is the cheapest month to book a flight from Boston to Southampton?

    Currently, August is the cheapest month in which you can book a flight from Boston to Southampton (average of £238). Flying from Boston to Southampton in June is currently the most expensive (average of £428). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boston to Southampton

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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How does Cheapflights help users find flights from Boston to Southampton?

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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