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Cheap flights from Philadelphia to London from $341

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 5/15. 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

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Find the cheapest flights from Philadelphia to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
10:45 am - 2:55 pm
PHL
-
YXU
4h 10m
1 stop
Air Canada Logo
9:30 am - 3:41 pm
YXU
-
PHL
6h 11m
1 stop
$725Air Canada
Thu, Jul 9 - Sun, Jul 12
Air Canada Logo
10:05 am - 5:45 pm
PHL
-
YXU
7h 40m
2 stops
Air Canada Logo
5:10 am - 10:04 am
YXU
-
PHL
4h 54m
1 stop
$734Air Canada
Wed, Jul 8 - Sat, Jul 18
Air Canada Logo
10:05 am - 5:45 pm
PHL
-
YXU
7h 40m
2 stops
Air Canada Logo
12:20 pm - 9:34 pm
YXU
-
PHL
9h 14m
2 stops
$743Air Canada
Wed, Jul 8 - Fri, Jul 17
Air Canada Logo
9:15 am - 9:19 pm
PHL
-
YXU
12h 04m
1 stop
Air Canada Logo
5:40 pm - 10:43 pm
YXU
-
PHL
5h 03m
1 stop
$750Air Canada
Tue, Apr 28 - Wed, Apr 29
Air Canada Logo
9:15 am - 9:19 pm
PHL
-
YXU
12h 04m
1 stop
Air Canada Logo
5:10 am - 2:46 pm
YXU
-
PHL
9h 36m
2 stops
$759Air Canada
Tue, Apr 28 - Wed, Apr 29
Air Canada Logo
3:25 pm - 8:55 am
PHL
-
YXU
17h 30m
2 stops
Air Canada Logo
3:30 pm - 9:34 pm
YXU
-
PHL
6h 04m
2 stops
$767Air Canada
Thu, Jul 9 - Fri, Jul 17
United Airlines Logo
7:00 am - 11:45 am
PHL
-
YXU
4h 45m
1 stop
United Airlines Logo
6:20 pm - 10:46 pm
YXU
-
PHL
4h 26m
1 stop
$822United Airlines
Fri, Jul 10 - Mon, Jul 20
United Airlines Logo
6:10 am - 2:55 pm
PHL
-
YXU
8h 45m
2 stops
United Airlines Logo
6:20 pm - 10:46 pm
YXU
-
PHL
4h 26m
1 stop
$832United Airlines
Fri, Jul 10 - Wed, Jul 15
United Airlines Logo
4:20 pm - 9:38 pm
PHL
-
YXU
5h 18m
1 stop
United Airlines Logo
9:30 am - 12:59 am
YXU
-
PHL
15h 29m
2 stops
$838United Airlines
Sun, May 3 - Sun, May 10
Air Canada Logo
10:33 am - 9:19 pm
PHL
-
YXU
10h 46m
2 stops
Air Canada Logo
5:10 am - 2:46 pm
YXU
-
PHL
9h 36m
2 stops
$841Air Canada
Tue, Apr 28 - Wed, Apr 29

Air Canada flights from Philadelphia to London, Ontario

Our best Air Canada deals on Philadelphia to London, Ontario flight tickets
Air Canada
Jul 9
PHL10:45 amPhiladelphia
4h 10m
1 stop
YXU2:55 pmLondon
Jul 12
YXU9:30 amLondon
6h 11m
1 stop
PHL3:41 pmPhiladelphia
$725
Air Canada
Jul 8
PHL10:05 amPhiladelphia
7h 40m
2 stops
YXU5:45 pmLondon
Jul 18
YXU5:10 amLondon
4h 54m
1 stop
PHL10:04 amPhiladelphia
$734
Air Canada
Jul 8
PHL10:05 amPhiladelphia
7h 40m
2 stops
YXU5:45 pmLondon
Jul 17
YXU12:20 pmLondon
9h 14m
2 stops
PHL9:34 pmPhiladelphia
$743

United Airlines flights from Philadelphia to London, Ontario

Our best United Airlines deals on Philadelphia to London, Ontario flight tickets
United Airlines
Jul 10
PHL7:00 amPhiladelphia
4h 45m
1 stop
YXU11:45 amLondon
Jul 20
YXU6:20 pmLondon
4h 26m
1 stop
PHL10:46 pmPhiladelphia
$822
United Airlines
Jul 10
PHL6:10 amPhiladelphia
8h 45m
2 stops
YXU2:55 pmLondon
Jul 15
YXU6:20 pmLondon
4h 26m
1 stop
PHL10:46 pmPhiladelphia
$832
United Airlines
May 3
PHL4:20 pmPhiladelphia
5h 18m
1 stop
YXU9:38 pmLondon
May 10
YXU9:30 amLondon
15h 29m
2 stops
PHL12:59 amPhiladelphia
$838

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 March 24, 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

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 7/9

10:45 am-2:55 pm

1 stop4h 10m

London

Sun 7/12

9:30 am-3:41 pm

1 stop6h 11m

$725

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Wed 7/8

10:05 am-5:45 pm

2 stops7h 40m

London

Sat 7/18

5:10 am-10:04 am

1 stop4h 54m

$734

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Wed 7/8

10:05 am-5:45 pm

2 stops7h 40m

London

Fri 7/17

12:20 pm-9:34 pm

2 stops9h 14m

$743

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 4/28

9:15 am-9:19 pm

1 stop12h 04m

London

Wed 4/29

5:40 pm-10:43 pm

1 stop5h 03m

$750

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 4/28

9:15 am-9:19 pm

1 stop12h 04m

London

Wed 4/29

5:10 am-2:46 pm

2 stops9h 36m

$759

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 7/9

3:25 pm-8:55 am

2 stops17h 30m

London

Fri 7/17

3:30 pm-9:34 pm

2 stops6h 04m

$767
Quickest round-trip

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Fri 7/10

7:00 am-11:45 am

1 stop4h 45m

London

Mon 7/20

6:20 pm-10:46 pm

1 stop4h 26m

$822

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Fri 7/10

6:10 am-2:55 pm

2 stops8h 45m

London

Wed 7/15

6:20 pm-10:46 pm

1 stop4h 26m

$832

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Sun 5/3

4:20 pm-9:38 pm

1 stop5h 18m

London

Sun 5/10

9:30 am-12:59 am

2 stops15h 29m

$838

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 4/28

10:33 am-9:19 pm

2 stops10h 46m

London

Wed 4/29

5:10 am-2:46 pm

2 stops9h 36m

$841

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
1
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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 and United Airlines are the most popular carriers 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 43% 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 45m

Direct flights

None
The fastest flight from Philadelphia to London, Ontario takes 4h 45m
There are no direct flights from Philadelphia to London, Ontario. There are no popular flight routes from Philadelphia to London, Ontario.
Search flight deals

  • 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 45m.

  • 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 many operators does momondo search for flights from Philadelphia Airport to London Airport?

  • 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.

  • What is the most popular airline from Philadelphia to London, Ontario?

Best airlines flying from Philadelphia to London, Ontario

Compare and see reviews for airlines that fly from Philadelphia to London, Ontario with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $549Free CancellationRating
7.1
10,836 reviews
Search Air Canada flights

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.

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