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Cheap flights from Boston to London from $211

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 8/13. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Boston to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:10 am - 5:20 am
BOS
-
YXU
22h 10m
3 stops
Multiple Airlines Logo
2:40 pm - 9:05 am
YXU
-
BOS
18h 25m
2 stops
$595Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
6:30 pm - 5:20 am
BOS
-
YXU
10h 50m
1 stop
Multiple Airlines Logo
2:40 pm - 9:05 am
YXU
-
BOS
18h 25m
2 stops
$600Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
4:45 pm - 5:20 am
BOS
-
YXU
12h 35m
2 stops
Multiple Airlines Logo
2:40 pm - 9:05 am
YXU
-
BOS
18h 25m
2 stops
$643Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
7:10 am - 5:20 am
BOS
-
YXU
22h 10m
3 stops
Multiple Airlines Logo
8:40 pm - 7:50 pm
YXU
-
BOS
23h 10m
3 stops
$672Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Air Canada Logo
4:55 pm - 9:40 pm
BOS
-
YXU
4h 45m
1 stop
Air Canada Logo
10:05 am - 4:05 pm
YXU
-
BOS
6h 00m
1 stop
$696Air Canada
Tue, Sep 29 - Wed, Sep 30
WestJet Logo
6:30 pm - 5:20 am
BOS
-
YXU
10h 50m
1 stop
WestJet Logo
8:40 pm - 10:20 pm
YXU
-
BOS
25h 40m
1 stop
$699WestJet
Mon, Aug 24 - Fri, Aug 28
Air Canada Logo
10:50 am - 2:50 pm
BOS
-
YXU
4h 00m
1 stop
Air Canada Logo
10:05 am - 6:07 pm
YXU
-
BOS
8h 02m
2 stops
$704Air Canada
Tue, Sep 29 - Wed, Sep 30
Air Canada Logo
5:50 am - 2:50 pm
BOS
-
YXU
9h 00m
2 stops
Air Canada Logo
3:30 pm - 9:26 pm
YXU
-
BOS
5h 56m
2 stops
$713Air Canada
Tue, Sep 29 - Wed, Sep 30
WestJet Logo
7:25 am - 5:20 am
BOS
-
YXU
21h 55m
1 stop
WestJet Logo
8:40 pm - 5:40 pm
YXU
-
BOS
21h 00m
1 stop
$719WestJet
Tue, Aug 18 - Tue, Aug 25
Air Canada Logo
12:30 pm - 5:42 pm
BOS
-
YXU
5h 12m
1 stop
Air Canada Logo
10:05 am - 4:03 pm
YXU
-
BOS
5h 58m
1 stop
$730Air Canada
Fri, Jul 17 - Fri, Jul 24

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Air Canada flights from Boston to London, Ontario

Our best Air Canada deals on Boston to London, Ontario flight tickets
Air Canada
Sep 29
BOS4:55 pmBoston Logan Intl
4h 45m
1 stop
YXU9:40 pmLondon
Sep 30
YXU10:05 amLondon
6h 00m
1 stop
BOS4:05 pmBoston Logan Intl
$696
Air Canada
Sep 29
BOS10:50 amBoston Logan Intl
4h 00m
1 stop
YXU2:50 pmLondon
Sep 30
YXU10:05 amLondon
8h 02m
2 stops
BOS6:07 pmBoston Logan Intl
$704
Air Canada
Sep 29
BOS5:50 amBoston Logan Intl
9h 00m
2 stops
YXU2:50 pmLondon
Sep 30
YXU3:30 pmLondon
5h 56m
2 stops
BOS9:26 pmBoston Logan Intl
$713

WestJet flights from Boston to London, Ontario

Our best WestJet deals on Boston to London, Ontario flight tickets
WestJet
Aug 24
BOS6:30 pmBoston Logan Intl
10h 50m
1 stop
YXU5:20 amLondon
Aug 28
YXU8:40 pmLondon
25h 40m
1 stop
BOS10:20 pmBoston Logan Intl
$699
WestJet
Aug 18
BOS7:25 amBoston Logan Intl
21h 55m
1 stop
YXU5:20 amLondon
Aug 25
YXU8:40 pmLondon
21h 00m
1 stop
BOS5:40 pmBoston Logan Intl
$719
WestJet
Jul 9
BOS7:25 amBoston Logan Intl
12h 25m
1 stop
YXU7:50 pmLondon
Jul 13
YXU5:55 pmLondon
23h 45m
1 stop
BOS5:40 pmBoston Logan Intl
$1,681

momondo Fare Finder

 
Customize your flight search to find flights from Boston to London, Ontario 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 July 7, 2026.
Use the filters below to find and compare flights from Boston to London, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Tue 8/18

7:10 am-5:20 am

3 stops22h 10m

London

Tue 8/25

2:40 pm-9:05 am

2 stops18h 25m

$595

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Tue 8/18

6:30 pm-5:20 am

1 stop10h 50m

London

Tue 8/25

2:40 pm-9:05 am

2 stops18h 25m

$600

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Tue 8/18

4:45 pm-5:20 am

2 stops12h 35m

London

Tue 8/25

2:40 pm-9:05 am

2 stops18h 25m

$643

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Tue 8/18

7:10 am-5:20 am

3 stops22h 10m

London

Tue 8/25

8:40 pm-7:50 pm

3 stops23h 10m

$672
Quickest round-trip

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Tue 9/29

4:55 pm-9:40 pm

1 stop4h 45m

London

Wed 9/30

10:05 am-4:05 pm

1 stop6h 00m

$696

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Mon 8/24

6:30 pm-5:20 am

1 stop10h 50m

London

Fri 8/28

8:40 pm-10:20 pm

1 stop25h 40m

$699

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Tue 9/29

10:50 am-2:50 pm

1 stop4h 00m

London

Wed 9/30

10:05 am-6:07 pm

2 stops8h 02m

$704

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Tue 9/29

5:50 am-2:50 pm

2 stops9h 00m

London

Wed 9/30

3:30 pm-9:26 pm

2 stops5h 56m

$713

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Tue 8/18

7:25 am-5:20 am

1 stop21h 55m

London

Tue 8/25

8:40 pm-5:40 pm

1 stop21h 00m

$719

BostonLondon

BOS - YXU

BOSYXU

Boston Logan Intl

Fri 7/17

12:30 pm-5:42 pm

1 stop5h 12m

London

Fri 7/24

10:05 am-4:03 pm

1 stop5h 58m

$730

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Boston to London, Ontario

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 London?

WestJet and Air Canada are the most popular carriers operating from Boston Logan Intl to London

What airlines fly to London, Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to London, Ontario from Boston according to our data. Air Canada is the first choice among our users, with 71% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 6 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.

When to book flights from Boston to London, Ontario

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

Cheap Boston to London, Ontario (BOS to YXU) flight deals and tips

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

Fastest flight time

4h 00m

Direct flights

None
The fastest flight from Boston to London, Ontario takes 4h 00m
There are no direct flights from Boston to London, Ontario. There are no popular flight routes from Boston to London, Ontario.
Search flight deals

Frequently asked questions about flying from Boston to London, Ontario

  • How far is Boston Logan Intl to London by plane?

    There are 518.0 mi between Boston Logan Intl and London. Typically, this will take 4h 00m by plane in normal conditions.

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

    Prices for flights from Boston Logan Intl Airport to London Airport are updated daily.

  • How old do you have to be to fly from Boston Logan Intl Airport to London 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 London Airport.

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

    The travel and health documents required for your trip to London Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend
Port Stanley

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to London for you.

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

momondo does allow users to show only those flights to London 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 London?

momondo helps you find the best flight between Boston and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to London from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your London, Ontario trip

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