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Cheap flights from Philadelphia to London from $417

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 2/23. 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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Find the cheapest flights from Philadelphia to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
4:25 pm - 9:18 pm
PHL
-
YXU
4h 53m
1 stop
Air Canada Logo
9:25 am - 3:44 pm
YXU
-
PHL
6h 19m
1 stop
$661Air Canada
Sun, Mar 29 - Sat, Apr 4
Air Canada Logo
4:25 pm - 9:18 pm
PHL
-
YXU
4h 53m
1 stop
Air Canada Logo
5:10 am - 2:46 pm
YXU
-
PHL
9h 36m
2 stops
$670Air Canada
Sun, Mar 29 - Sat, Apr 4
Air Canada Logo
7:25 am - 9:21 pm
PHL
-
YXU
13h 56m
1 stop
Air Canada Logo
9:40 am - 3:49 pm
YXU
-
PHL
6h 09m
1 stop
$673Air Canada
Tue, Mar 24 - Fri, Mar 27
Air Canada Logo
7:25 am - 5:05 pm
PHL
-
YXU
9h 40m
1 stop
Air Canada Logo
5:10 am - 2:47 pm
YXU
-
PHL
9h 37m
2 stops
$676Air Canada
Tue, Mar 24 - Fri, Mar 27
Air Canada Logo
10:05 am - 5:33 pm
PHL
-
YXU
7h 28m
2 stops
Air Canada Logo
6:00 am - 2:49 pm
YXU
-
PHL
8h 49m
2 stops
$679Air Canada
Mon, Jun 15 - Fri, Jun 19
Air Canada Logo
3:30 pm - 8:46 am
PHL
-
YXU
17h 16m
2 stops
Air Canada Logo
5:10 am - 2:47 pm
YXU
-
PHL
9h 37m
2 stops
$680Air Canada
Tue, Mar 24 - Fri, Mar 27
Air Canada Logo
9:15 am - 9:18 pm
PHL
-
YXU
12h 03m
1 stop
Air Canada Logo
5:40 pm - 10:43 pm
YXU
-
PHL
5h 03m
1 stop
$686Air Canada
Tue, Mar 31 - Tue, Apr 7
Air Canada Logo
9:15 am - 5:03 pm
PHL
-
YXU
7h 48m
1 stop
Air Canada Logo
5:10 am - 2:46 pm
YXU
-
PHL
9h 36m
2 stops
$695Air Canada
Tue, Mar 31 - Tue, Apr 7
Air Canada Logo
3:30 pm - 8:43 am
PHL
-
YXU
17h 13m
2 stops
Air Canada Logo
5:10 am - 2:46 pm
YXU
-
PHL
9h 36m
2 stops
$704Air Canada
Tue, Mar 31 - Tue, Apr 7
Air Canada Logo
3:30 pm - 8:43 am
PHL
-
YXU
17h 13m
2 stops
Air Canada Logo
5:10 am - 2:46 pm
YXU
-
PHL
9h 36m
2 stops
$734Air Canada
Sun, Mar 29 - Sat, Apr 4

Air Canada flights from Philadelphia to London, Ontario

Our best Air Canada deals on Philadelphia to London, Ontario flight tickets
Air Canada
Mar 29
PHL4:25 pmPhiladelphia
4h 53m
1 stop
YXU9:18 pmLondon
Apr 4
YXU9:25 amLondon
6h 19m
1 stop
PHL3:44 pmPhiladelphia
$661
Air Canada
Mar 29
PHL4:25 pmPhiladelphia
4h 53m
1 stop
YXU9:18 pmLondon
Apr 4
YXU5:10 amLondon
9h 36m
2 stops
PHL2:46 pmPhiladelphia
$670
Air Canada
Mar 24
PHL7:25 amPhiladelphia
13h 56m
1 stop
YXU9:21 pmLondon
Mar 27
YXU9:40 amLondon
6h 09m
1 stop
PHL3:49 pmPhiladelphia
$673

United Airlines flights from Philadelphia to London, Ontario

Our best United Airlines deals on Philadelphia to London, Ontario flight tickets
United Airlines
Apr 2
PHL4:25 pmPhiladelphia
4h 53m
1 stop
YXU9:18 pmLondon
Apr 9
YXU5:40 pmLondon
5h 03m
1 stop
PHL10:43 pmPhiladelphia
$747
United Airlines
Mar 2
PHL10:06 amPhiladelphia
11h 15m
2 stops
YXU9:21 pmLondon
Mar 4
YXU5:10 amLondon
9h 00m
2 stops
PHL2:10 pmPhiladelphia
$990

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 February 18, 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

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Sun 3/29

4:25 pm-9:18 pm

1 stop4h 53m

London

Sat 4/4

9:25 am-3:44 pm

1 stop6h 19m

$661

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Sun 3/29

4:25 pm-9:18 pm

1 stop4h 53m

London

Sat 4/4

5:10 am-2:46 pm

2 stops9h 36m

$670

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 3/24

7:25 am-9:21 pm

1 stop13h 56m

London

Fri 3/27

9:40 am-3:49 pm

1 stop6h 09m

$673

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 3/24

7:25 am-5:05 pm

1 stop9h 40m

London

Fri 3/27

5:10 am-2:47 pm

2 stops9h 37m

$676

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Mon 6/15

10:05 am-5:33 pm

2 stops7h 28m

London

Fri 6/19

6:00 am-2:49 pm

2 stops8h 49m

$679

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 3/24

3:30 pm-8:46 am

2 stops17h 16m

London

Fri 3/27

5:10 am-2:47 pm

2 stops9h 37m

$680

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 3/31

9:15 am-9:18 pm

1 stop12h 03m

London

Tue 4/7

5:40 pm-10:43 pm

1 stop5h 03m

$686

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 3/31

9:15 am-5:03 pm

1 stop7h 48m

London

Tue 4/7

5:10 am-2:46 pm

2 stops9h 36m

$695

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 3/31

3:30 pm-8:43 am

2 stops17h 13m

London

Tue 4/7

5:10 am-2:46 pm

2 stops9h 36m

$704

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Sun 3/29

3:30 pm-8:43 am

2 stops17h 13m

London

Sat 4/4

5:10 am-2:46 pm

2 stops9h 36m

$734

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 44% 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 46m

Direct flights

None
The fastest flight from Philadelphia to London, Ontario takes 4h 46m
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 46m.

  • 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
10,732 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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