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Cheap flights from Philadelphia to London from $287

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to London departing on 9/13. 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 Philadelphia to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
10:50 am - 2:50 pm
PHL
-
YXU
4h 00m
1 stop
Air Canada Logo
6:20 pm - 10:46 pm
YXU
-
PHL
4h 26m
1 stop
$797Air Canada
Wed, Sep 2 - Wed, Sep 2
Air Canada Logo
10:05 am - 5:43 pm
PHL
-
YXU
7h 38m
2 stops
Air Canada Logo
6:20 pm - 10:46 pm
YXU
-
PHL
4h 26m
1 stop
$806Air Canada
Thu, Sep 10 - Thu, Sep 17
Air Canada Logo
4:20 pm - 9:40 pm
PHL
-
YXU
5h 20m
1 stop
Air Canada Logo
6:20 pm - 10:46 pm
YXU
-
PHL
4h 26m
1 stop
$808Air Canada
Wed, Oct 7 - Sat, Oct 10
Air Canada Logo
10:05 am - 5:43 pm
PHL
-
YXU
7h 38m
2 stops
Air Canada Logo
5:40 am - 2:47 pm
YXU
-
PHL
9h 07m
2 stops
$814Air Canada
Thu, Sep 10 - Thu, Sep 17
Air Canada Logo
10:05 am - 5:43 pm
PHL
-
YXU
7h 38m
2 stops
Air Canada Logo
5:40 am - 2:47 pm
YXU
-
PHL
9h 07m
2 stops
$815Air Canada
Thu, Sep 10 - Thu, Sep 17
Air Canada Logo
4:20 pm - 9:40 pm
PHL
-
YXU
5h 20m
1 stop
Air Canada Logo
3:30 pm - 9:32 pm
YXU
-
PHL
6h 02m
2 stops
$816Air Canada
Wed, Oct 7 - Mon, Oct 12
Air Canada Logo
10:50 am - 2:50 pm
PHL
-
YXU
4h 00m
1 stop
Air Canada Logo
5:40 am - 3:41 pm
YXU
-
PHL
10h 01m
1 stop
$822Air Canada
Thu, Sep 10 - Thu, Sep 17
Air Canada Logo
3:25 pm - 9:40 pm
PHL
-
YXU
6h 15m
2 stops
Air Canada Logo
3:30 pm - 9:32 pm
YXU
-
PHL
6h 02m
2 stops
$825Air Canada
Wed, Oct 7 - Mon, Oct 12
Air Canada Logo
10:50 am - 2:50 pm
PHL
-
YXU
4h 00m
1 stop
Air Canada Logo
10:05 am - 3:41 pm
YXU
-
PHL
5h 36m
1 stop
$832Air Canada
Tue, Aug 25 - Tue, Sep 1
Air Canada Logo
10:05 am - 5:42 pm
PHL
-
YXU
7h 37m
2 stops
Air Canada Logo
6:20 pm - 10:46 pm
YXU
-
PHL
4h 26m
1 stop
$840Air Canada
Tue, Aug 25 - Tue, Sep 1

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Air Canada flights from Philadelphia to London, Ontario

Our best Air Canada deals on Philadelphia to London, Ontario flight tickets
Air Canada
Sep 2
PHL10:50 amPhiladelphia
4h 00m
1 stop
YXU2:50 pmLondon
Sep 2
YXU6:20 pmLondon
4h 26m
1 stop
PHL10:46 pmPhiladelphia
$797
Air Canada
Sep 10
PHL10:05 amPhiladelphia
7h 38m
2 stops
YXU5:43 pmLondon
Sep 17
YXU6:20 pmLondon
4h 26m
1 stop
PHL10:46 pmPhiladelphia
$806
Air Canada
Oct 7
PHL4:20 pmPhiladelphia
5h 20m
1 stop
YXU9:40 pmLondon
Oct 10
YXU6:20 pmLondon
4h 26m
1 stop
PHL10:46 pmPhiladelphia
$808

United Airlines flights from Philadelphia to London, Ontario

Our best United Airlines deals on Philadelphia to London, Ontario flight tickets
United Airlines
Sep 16
PHL4:20 pmPhiladelphia
5h 20m
1 stop
YXU9:40 pmLondon
Sep 23
YXU5:40 amLondon
4h 31m
1 stop
PHL10:11 amPhiladelphia
$905
United Airlines
Sep 2
PHL6:25 amPhiladelphia
8h 25m
2 stops
YXU2:50 pmLondon
Sep 2
YXU6:20 pmLondon
4h 26m
1 stop
PHL10:46 pmPhiladelphia
$915
United Airlines
Sep 2
PHL6:25 amPhiladelphia
8h 25m
2 stops
YXU2:50 pmLondon
Sep 2
YXU6:20 pmLondon
15h 18m
2 stops
PHL9:38 amPhiladelphia
$930

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia 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 August 4, 2026.
Use the filters below to find and compare flights from Philadelphia to London, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Wed 9/2

10:50 am-2:50 pm

1 stop4h 00m

London

Wed 9/2

6:20 pm-10:46 pm

1 stop4h 26m

$797

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 9/10

10:05 am-5:43 pm

2 stops7h 38m

London

Thu 9/17

6:20 pm-10:46 pm

1 stop4h 26m

$806

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Wed 10/7

4:20 pm-9:40 pm

1 stop5h 20m

London

Sat 10/10

6:20 pm-10:46 pm

1 stop4h 26m

$808

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 9/10

10:05 am-5:43 pm

2 stops7h 38m

London

Thu 9/17

5:40 am-2:47 pm

2 stops9h 07m

$814

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 9/10

10:05 am-5:43 pm

2 stops7h 38m

London

Thu 9/17

5:40 am-2:47 pm

2 stops9h 07m

$815

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Wed 10/7

4:20 pm-9:40 pm

1 stop5h 20m

London

Mon 10/12

3:30 pm-9:32 pm

2 stops6h 02m

$816

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 9/10

10:50 am-2:50 pm

1 stop4h 00m

London

Thu 9/17

5:40 am-3:41 pm

1 stop10h 01m

$822

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Wed 10/7

3:25 pm-9:40 pm

2 stops6h 15m

London

Mon 10/12

3:30 pm-9:32 pm

2 stops6h 02m

$825

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 8/25

10:50 am-2:50 pm

1 stop4h 00m

London

Tue 9/1

10:05 am-3:41 pm

1 stop5h 36m

$832

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 8/25

10:05 am-5:42 pm

2 stops7h 37m

London

Tue 9/1

6:20 pm-10:46 pm

1 stop4h 26m

$840

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Philadelphia 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 Philadelphia to London?

Air Canada is the most popular carrier operating from Philadelphia 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 Philadelphia according to our data. Air Canada is the first choice among our users, with 46% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 8 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 Philadelphia to London, Ontario

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

Cheap Philadelphia to London, Ontario (PHL to YXU) flight deals and tips

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

Fastest flight time

4h 00m

Direct flights

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

Frequently asked questions about flying from Philadelphia to London, Ontario

  • How far is Philadelphia to London by plane?

    A flight from Philadelphia to London will travel around 377.5 mi. A reasonable flight in good conditions will take 4h 00m.

  • When did momondo last update prices for flights from Philadelphia Airport to London Airport?

    Prices for flights from Philadelphia Airport to London Airport were last updated today.

  • How old do you have to be to fly from Philadelphia Airport to London Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Philadelphia Airport to London Airport.

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

    The necessary travel and health documents for your London 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.

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 Philadelphia to London?

It is quick and easy to find Philadelphia to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Flights from Philadelphia to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Philadelphia to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Philadelphia.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Philadelphia and alert you when they change.

An easier way to manage your London, Ontario trip

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