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Cheap flights from Pennsylvania to London from $258

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pennsylvania to London departing on 6/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Pennsylvania to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
10:30 am - 2:58 pm
LGA
-
YXU
4h 28m
1 stop
Air Canada Logo
5:10 am - 10:56 am
YXU
-
LGA
5h 46m
1 stop
$570Air Canada
Thu, Jun 4 - Fri, Jun 12
Air Canada Logo
11:00 am - 2:58 pm
EWR
-
YXU
3h 58m
1 stop
Air Canada Logo
5:10 am - 10:20 am
YXU
-
EWR
5h 10m
1 stop
$570Air Canada
Thu, Jun 4 - Fri, Jun 12
Air Canada Logo
4:00 pm - 9:40 pm
LGA
-
YXU
5h 40m
1 stop
Air Canada Logo
5:10 am - 9:29 am
YXU
-
LGA
4h 19m
1 stop
$571Air Canada
Thu, Jul 2 - Thu, Jul 9
Air Canada Logo
12:55 pm - 5:45 pm
EWR
-
YXU
4h 50m
1 stop
Air Canada Logo
10:05 am - 1:37 pm
YXU
-
EWR
3h 32m
1 stop
$571Air Canada
Thu, Jul 2 - Thu, Jul 9
Multiple Airlines Logo
8:25 pm - 1:50 pm
LGA
-
YXU
17h 25m
2 stops
Multiple Airlines Logo
2:40 pm - 7:25 pm
YXU
-
LGA
28h 45m
2 stops
$572Multiple Airlines
Mon, Jun 15 - Sun, Jun 21
Multiple Airlines Logo
8:25 pm - 1:50 pm
LGA
-
YXU
17h 25m
2 stops
Multiple Airlines Logo
2:40 pm - 7:25 pm
YXU
-
LGA
28h 45m
2 stops
$596Multiple Airlines
Mon, Jun 15 - Sun, Jun 21
WestJet Logo
5:30 pm - 5:20 am
JFK
-
YXU
11h 50m
1 stop
WestJet Logo
6:10 am - 4:35 pm
YXU
-
JFK
10h 25m
1 stop
$731WestJet
Sat, Sep 5 - Thu, Sep 10
WestJet Logo
5:30 pm - 5:20 am
JFK
-
YXU
11h 50m
1 stop
WestJet Logo
6:10 am - 4:35 pm
YXU
-
JFK
10h 25m
1 stop
$741WestJet
Sat, Sep 5 - Thu, Sep 10
United Airlines Logo
4:05 pm - 9:38 pm
IAD
-
YXU
5h 33m
1 stop
United Airlines Logo
10:05 am - 3:24 pm
YXU
-
IAD
5h 19m
1 stop
$794United Airlines
Sun, Jun 14 - Sun, Jun 21
United Airlines Logo
8:41 pm - 2:58 pm
PHL
-
YXU
18h 17m
2 stops
United Airlines Logo
5:10 am - 10:09 am
YXU
-
PHL
4h 59m
1 stop
$862United Airlines
Mon, Jun 15 - Sun, Jun 21

United Airlines flights from Pennsylvania to London, Ontario

Our best United Airlines deals on Pennsylvania to London, Ontario flight tickets
United Airlines
Sep 5
EWR8:29 pmNewark
18h 26m
2 stops
YXU2:55 pmLondon
Sep 10
YXU6:20 pmLondon
4h 10m
1 stop
EWR10:30 pmNewark
$752
United Airlines
Sep 25
DCA11:00 amWashington, D.C. Reagan-National
3h 55m
1 stop
YXU2:55 pmLondon
Sep 27
YXU6:20 pmLondon
4h 14m
1 stop
DCA10:34 pmWashington, D.C. Reagan-National
$764
United Airlines
Sep 3
DCA11:00 amWashington, D.C. Reagan-National
3h 55m
1 stop
YXU2:55 pmLondon
Sep 7
YXU6:20 pmLondon
4h 11m
1 stop
DCA10:31 pmWashington, D.C. Reagan-National
$779

WestJet flights from Pennsylvania to London, Ontario

Our best WestJet deals on Pennsylvania to London, Ontario flight tickets
WestJet
Sep 5
JFK5:30 pmNew York John F Kennedy Intl
11h 50m
1 stop
YXU5:20 amLondon
Sep 10
YXU6:10 amLondon
10h 25m
1 stop
JFK4:35 pmNew York John F Kennedy Intl
$731
WestJet
Sep 5
JFK5:30 pmNew York John F Kennedy Intl
11h 50m
1 stop
YXU5:20 amLondon
Sep 10
YXU6:10 amLondon
10h 25m
1 stop
JFK4:35 pmNew York John F Kennedy Intl
$741
WestJet
Jun 13
JFK5:30 pmNew York John F Kennedy Intl
11h 50m
1 stop
YXU5:20 amLondon
Jun 16
YXU2:40 pmLondon
25h 55m
2 stops
JFK4:35 pmNew York John F Kennedy Intl
$790

momondo Fare Finder

 
Customize your flight search to find flights from Pennsylvania 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 19, 2026.
Use the filters below to find and compare flights from Pennsylvania to London, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Thu 6/4

10:30 am-2:58 pm

1 stop4h 28m

London

Fri 6/12

5:10 am-10:56 am

1 stop5h 46m

$570

NewarkLondon

EWR - YXU

EWRYXU

Newark

Thu 6/4

11:00 am-2:58 pm

1 stop3h 58m

London

Fri 6/12

5:10 am-10:20 am

1 stop5h 10m

$570

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Thu 7/2

4:00 pm-9:40 pm

1 stop5h 40m

London

Thu 7/9

5:10 am-9:29 am

1 stop4h 19m

$571
Quickest round-trip

NewarkLondon

EWR - YXU

EWRYXU

Newark

Thu 7/2

12:55 pm-5:45 pm

1 stop4h 50m

London

Thu 7/9

10:05 am-1:37 pm

1 stop3h 32m

$571

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Mon 6/15

8:25 pm-1:50 pm

2 stops17h 25m

London

Sun 6/21

2:40 pm-7:25 pm

2 stops28h 45m

$572

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Mon 6/15

8:25 pm-1:50 pm

2 stops17h 25m

London

Sun 6/21

2:40 pm-7:25 pm

2 stops28h 45m

$596

New YorkLondon

JFK - YXU

JFKYXU

New York John F Kennedy Intl

Sat 9/5

5:30 pm-5:20 am

1 stop11h 50m

London

Thu 9/10

6:10 am-4:35 pm

1 stop10h 25m

$731

New YorkLondon

JFK - YXU

JFKYXU

New York John F Kennedy Intl

Sat 9/5

5:30 pm-5:20 am

1 stop11h 50m

London

Thu 9/10

6:10 am-4:35 pm

1 stop10h 25m

$741

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 6/14

4:05 pm-9:38 pm

1 stop5h 33m

London

Sun 6/21

10:05 am-3:24 pm

1 stop5h 19m

$794

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Mon 6/15

8:41 pm-2:58 pm

2 stops18h 17m

London

Sun 6/21

5:10 am-10:09 am

1 stop4h 59m

$862

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 Pennsylvania 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 Pennsylvania to London?

Air Canada, United Airlines, and WestJet are the most popular carriers operating from Pennsylvania to London

What airlines fly to London, Ontario?

Air Canada, American Airlines and United Airlines are the top three most popular airlines that fly to London, Ontario from Pennsylvania according to our data. Air Canada is the first choice among our users, with 39% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 4 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.

Cheap Pennsylvania to London, Ontario flight deals and tips

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

Fastest flight time

3h 55m

Direct flights

None
The fastest flight from Pennsylvania to London, Ontario takes 3h 55m
There are no direct flights from Pennsylvania to London, Ontario. There are no popular flight routes from Pennsylvania to London, Ontario.
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Frequently asked questions about flying from Pennsylvania to London, Ontario

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

    Prices for flights from Pennsylvania to London Airport are refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Pennsylvania 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 Pennsylvania to London?

Finding the right flight to London from Pennsylvania is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. All flights to London from Pennsylvania on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Pennsylvania 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 Pennsylvania 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 Pennsylvania 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
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