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Cheap flights from Boston to London from $435

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to London departing on 6/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:00 pm - 7:40 pm
BOS
-
SOU
26h 40m
2 stops
Multiple Airlines Logo
9:30 am - 9:20 pm
SOU
-
BOS
15h 50m
2 stops
$593Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
10:15 am - 7:40 pm
BOS
-
SOU
29h 25m
3 stops
Multiple Airlines Logo
9:30 am - 9:20 pm
SOU
-
BOS
15h 50m
2 stops
$597Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Aer Lingus Logo
10:20 pm - 7:40 pm
BOS
-
SOU
17h 20m
1 stop
Aer Lingus Logo
9:30 am - 7:55 pm
SOU
-
BOS
14h 25m
1 stop
$639Aer Lingus
Thu, Mar 19 - Thu, Mar 26
Aer Lingus Logo
6:10 pm - 8:45 am
BOS
-
SOU
10h 35m
1 stop
Aer Lingus Logo
9:30 am - 7:55 pm
SOU
-
BOS
14h 25m
1 stop
$716Aer Lingus
Fri, Mar 20 - Fri, Mar 27
Multiple Airlines Logo
5:30 am - 7:40 pm
BOS
-
SOU
34h 10m
3 stops
Multiple Airlines Logo
12:00 pm - 2:10 pm
SOU
-
BOS
30h 10m
3 stops
$750Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
8:10 pm - 8:20 am
BOS
-
SOU
32h 10m
1 stop
Multiple Airlines Logo
5:30 pm - 6:30 pm
SOU
-
BOS
29h 00m
1 stop
$816Multiple Airlines
Sat, Mar 21 - Sat, Mar 28
Multiple Airlines Logo
6:10 pm - 8:45 am
BOS
-
SOU
10h 35m
1 stop
Multiple Airlines Logo
12:00 pm - 6:50 pm
SOU
-
BOS
34h 50m
2 stops
$860Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
1:00 pm - 3:35 pm
BOS
-
SOU
22h 35m
2 stops
Multiple Airlines Logo
9:30 am - 3:10 pm
SOU
-
BOS
33h 40m
2 stops
$861Multiple Airlines
Sat, Mar 21 - Sat, Mar 28
KLM Logo
5:15 pm - 8:20 am
BOS
-
SOU
35h 05m
2 stops
KLM Logo
5:30 pm - 6:30 pm
SOU
-
BOS
29h 00m
1 stop
$867KLM
Sat, Mar 21 - Sat, Mar 28
Multiple Airlines Logo
8:50 pm - 8:20 am
BOS
-
SOU
31h 30m
3 stops
Multiple Airlines Logo
5:30 pm - 6:50 pm
SOU
-
BOS
29h 20m
3 stops
$919Multiple Airlines
Sat, Mar 21 - Sat, Mar 28

Aer Lingus flights from Boston to Southampton

Our best Aer Lingus deals on Boston to Southampton flight tickets
Aer Lingus
Mar 19
BOS10:20 pmBoston Logan Intl
17h 20m
1 stop
SOU7:40 pmSouthampton Eastleigh
Mar 26
SOU9:30 amSouthampton Eastleigh
14h 25m
1 stop
BOS7:55 pmBoston Logan Intl
$639
Aer Lingus
Mar 20
BOS6:10 pmBoston Logan Intl
10h 35m
1 stop
SOU8:45 amSouthampton Eastleigh
Mar 27
SOU9:30 amSouthampton Eastleigh
14h 25m
1 stop
BOS7:55 pmBoston Logan Intl
$716
Aer Lingus
Apr 9
BOS5:20 pmBoston Logan Intl
10h 20m
1 stop
SOU8:40 amSouthampton Eastleigh
Apr 13
SOU8:00 pmSouthampton Eastleigh
23h 55m
1 stop
BOS2:55 pmBoston Logan Intl
$936

Delta flights from Boston to Southampton

Our best Delta deals on Boston to Southampton flight tickets
Delta
May 19
BOS9:05 amBoston Logan Intl
18h 30m
2 stops
SOU8:35 amSouthampton Eastleigh
May 30
SOU9:15 amSouthampton Eastleigh
14h 15m
1 stop
BOS6:30 pmBoston Logan Intl
$953
Delta
May 19
BOS9:05 amBoston Logan Intl
18h 30m
2 stops
SOU8:35 amSouthampton Eastleigh
May 30
SOU9:15 amSouthampton Eastleigh
14h 43m
2 stops
BOS6:58 pmBoston Logan Intl
$963
Delta
Jul 8
BOS8:25 pmBoston Logan Intl
16h 10m
1 stop
SOU5:35 pmSouthampton Eastleigh
Jul 27
SOU9:15 amSouthampton Eastleigh
12h 25m
1 stop
BOS4:40 pmBoston Logan Intl
$1,090

momondo Fare Finder

 
Customize 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, momondo users made 832,500 searches. Data last updated February 4, 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

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 3/19

1:00 pm-7:40 pm

2 stops26h 40m

Southampton Eastleigh

Thu 3/26

9:30 am-9:20 pm

2 stops15h 50m

$593

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 3/19

10:15 am-7:40 pm

3 stops29h 25m

Southampton Eastleigh

Thu 3/26

9:30 am-9:20 pm

2 stops15h 50m

$597

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 3/19

10:20 pm-7:40 pm

1 stop17h 20m

Southampton Eastleigh

Thu 3/26

9:30 am-7:55 pm

1 stop14h 25m

$639

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Fri 3/20

6:10 pm-8:45 am

1 stop10h 35m

Southampton Eastleigh

Fri 3/27

9:30 am-7:55 pm

1 stop14h 25m

$716

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 3/19

5:30 am-7:40 pm

3 stops34h 10m

Southampton Eastleigh

Thu 3/26

12:00 pm-2:10 pm

3 stops30h 10m

$750

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sat 3/21

8:10 pm-8:20 am

1 stop32h 10m

Southampton Eastleigh

Sat 3/28

5:30 pm-6:30 pm

1 stop29h 00m

$816

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Thu 3/19

6:10 pm-8:45 am

1 stop10h 35m

Southampton Eastleigh

Thu 3/26

12:00 pm-6:50 pm

2 stops34h 50m

$860

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sat 3/21

1:00 pm-3:35 pm

2 stops22h 35m

Southampton Eastleigh

Sat 3/28

9:30 am-3:10 pm

2 stops33h 40m

$861

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sat 3/21

5:15 pm-8:20 am

2 stops35h 05m

Southampton Eastleigh

Sat 3/28

5:30 pm-6:30 pm

1 stop29h 00m

$867

BostonSouthampton

BOS - SOU

BOSSOU

Boston Logan Intl

Sat 3/21

8:50 pm-8:20 am

3 stops31h 30m

Southampton Eastleigh

Sat 3/28

5:30 pm-6:50 pm

3 stops29h 20m

$919

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Boston to Southampton

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Boston Logan Intl to Southampton Eastleigh?

Aer Lingus and KLM are the most popular carriers operating from Boston Logan Intl to Southampton Eastleigh

What airlines fly to Southampton?

British Airways, Delta and Iberia are the top three most popular airlines that fly to Southampton from Boston according to our data. British Airways is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 17 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.

When to book flights from Boston to Southampton

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Southampton according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Southampton (BOS to SOU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Southampton

Fastest flight time

10h 15m

Direct flights

None
The fastest flight from Boston to Southampton takes 10h 15m
There are no direct flights from Boston to Southampton. There are no popular flight routes from Boston to Southampton.
Search flight deals

  • How far is Boston Logan Intl to Southampton Eastleigh by plane?

    A flight from Boston Logan Intl to Southampton Eastleigh will travel around 3229.1 mi. Flights usually cover this in 10h 15m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Southampton Eastleigh Airport?

    Prices for flights from Boston Logan Intl Airport to Southampton Eastleigh Airport were last updated today.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Southampton Eastleigh Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Southampton Eastleigh Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

    The necessary travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Boston to Southampton?

Best airlines flying from Boston to Southampton

Compare and see reviews for airlines that fly from Boston to Southampton with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $515Free CancellationRating
7.9
8,142 reviews
Search Delta flights
Aer LingusPriceFrom $698Free CancellationRating
7.2
1,444 reviews
Search Aer Lingus flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Southampton?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to Southampton. momondo saves you time and could save you money on your trip.

Can I find flights from Boston to Southampton with flexible booking policies on momondo?

momondo does allow users to show only those flights to Southampton from Boston which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Boston to Southampton?

momondo provides multiple filters to help you find the best flight to Southampton from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Boston to Southampton right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Boston to Southampton flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Southampton trip

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