Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Philadelphia to London from $405

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 7/4. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Philadelphia to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
10:35 am - 2:55 pm
PHL
-
YXU
4h 20m
1 stop
Air Canada Logo
10:05 am - 3:41 pm
YXU
-
PHL
5h 36m
1 stop
$712Air Canada
Tue, Sep 29 - Fri, Oct 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
$721Air Canada
Tue, Sep 29 - Fri, Oct 2
Air Canada Logo
10:05 am - 5:43 pm
PHL
-
YXU
7h 38m
2 stops
Air Canada Logo
3:30 pm - 9:32 pm
YXU
-
PHL
6h 02m
2 stops
$730Air Canada
Tue, Sep 29 - Fri, Oct 2
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
$745Air Canada
Tue, Aug 25 - Sat, Aug 29
Air Canada Logo
4:20 pm - 9:40 pm
PHL
-
YXU
5h 20m
1 stop
Air Canada Logo
5:40 am - 2:49 pm
YXU
-
PHL
9h 09m
2 stops
$753Air Canada
Tue, Aug 25 - Sat, Aug 29
Air Canada Logo
3:25 pm - 9:40 pm
PHL
-
YXU
6h 15m
2 stops
Air Canada Logo
5:40 am - 2:49 pm
YXU
-
PHL
9h 09m
2 stops
$762Air Canada
Tue, Aug 25 - Sat, Aug 29
Air Canada Logo
6:00 am - 2:57 pm
PHL
-
YXU
8h 57m
1 stop
Air Canada Logo
10:05 am - 3:39 pm
YXU
-
PHL
5h 34m
1 stop
$769Air Canada
Thu, Jun 18 - Thu, Jun 25
Air Canada Logo
10:05 am - 9:37 pm
PHL
-
YXU
11h 32m
2 stops
Air Canada Logo
3:30 pm - 9:34 pm
YXU
-
PHL
6h 04m
2 stops
$792Air Canada
Fri, Jun 19 - Thu, Jun 25
United Airlines Logo
4:20 pm - 9:40 pm
PHL
-
YXU
5h 20m
1 stop
United Airlines Logo
6:20 pm - 10:46 pm
YXU
-
PHL
4h 26m
1 stop
$820United Airlines
Thu, Oct 1 - Sat, Oct 3
United Airlines Logo
6:15 am - 2:55 pm
PHL
-
YXU
8h 40m
2 stops
United Airlines Logo
6:20 pm - 10:46 pm
YXU
-
PHL
4h 26m
1 stop
$830United Airlines
Thu, Oct 1 - Sat, Oct 3

United Airlines flights from Philadelphia to London, Ontario

Our best United Airlines deals on Philadelphia to London, Ontario flight tickets
United Airlines
Oct 1
PHL4:20 pmPhiladelphia
5h 20m
1 stop
YXU9:40 pmLondon
Oct 3
YXU6:20 pmLondon
4h 26m
1 stop
PHL10:46 pmPhiladelphia
$820
United Airlines
Oct 1
PHL6:15 amPhiladelphia
8h 40m
2 stops
YXU2:55 pmLondon
Oct 3
YXU6:20 pmLondon
4h 26m
1 stop
PHL10:46 pmPhiladelphia
$830
United Airlines
Oct 1
PHL6:15 amPhiladelphia
15h 25m
2 stops
YXU9:40 pmLondon
Oct 3
YXU10:05 amLondon
11h 24m
2 stops
PHL9:29 pmPhiladelphia
$845

Air Canada flights from Philadelphia to London, Ontario

Our best Air Canada deals on Philadelphia to London, Ontario flight tickets
Air Canada
Sep 29
PHL10:35 amPhiladelphia
4h 20m
1 stop
YXU2:55 pmLondon
Oct 2
YXU10:05 amLondon
5h 36m
1 stop
PHL3:41 pmPhiladelphia
$712
Air Canada
Sep 29
PHL10:05 amPhiladelphia
7h 38m
2 stops
YXU5:43 pmLondon
Oct 2
YXU6:20 pmLondon
4h 26m
1 stop
PHL10:46 pmPhiladelphia
$721
Air Canada
Sep 29
PHL10:05 amPhiladelphia
7h 38m
2 stops
YXU5:43 pmLondon
Oct 2
YXU3:30 pmLondon
6h 02m
2 stops
PHL9:32 pmPhiladelphia
$730

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 May 23, 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

Tue 9/29

10:35 am-2:55 pm

1 stop4h 20m

London

Fri 10/2

10:05 am-3:41 pm

1 stop5h 36m

$712

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 9/29

10:05 am-5:43 pm

2 stops7h 38m

London

Fri 10/2

6:20 pm-10:46 pm

1 stop4h 26m

$721

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 9/29

10:05 am-5:43 pm

2 stops7h 38m

London

Fri 10/2

3:30 pm-9:32 pm

2 stops6h 02m

$730
Quickest round-trip

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 8/25

4:20 pm-9:40 pm

1 stop5h 20m

London

Sat 8/29

6:20 pm-10:46 pm

1 stop4h 26m

$745

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 8/25

4:20 pm-9:40 pm

1 stop5h 20m

London

Sat 8/29

5:40 am-2:49 pm

2 stops9h 09m

$753

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Tue 8/25

3:25 pm-9:40 pm

2 stops6h 15m

London

Sat 8/29

5:40 am-2:49 pm

2 stops9h 09m

$762

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 6/18

6:00 am-2:57 pm

1 stop8h 57m

London

Thu 6/25

10:05 am-3:39 pm

1 stop5h 34m

$769

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Fri 6/19

10:05 am-9:37 pm

2 stops11h 32m

London

Thu 6/25

3:30 pm-9:34 pm

2 stops6h 04m

$792

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 10/1

4:20 pm-9:40 pm

1 stop5h 20m

London

Sat 10/3

6:20 pm-10:46 pm

1 stop4h 26m

$820

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 10/1

6:15 am-2:55 pm

2 stops8h 40m

London

Sat 10/3

6:20 pm-10:46 pm

1 stop4h 26m

$830

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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?

United Airlines 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 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 05m

Direct flights

None
The fastest flight from Philadelphia to London, Ontario takes 4h 05m
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 05m.

  • 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 6/22
Mon 6/29
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada