Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Philadelphia to London Heathrow Airport from £177

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 Heathrow Airport departing on 30/1. 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

Deals available from 900+ travel sites.

'This year, momondo is the #1 place for airfares on the internet.'
Voted winner of Europe's Best Travel App 2023
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise 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.

Find the cheapest flights from Philadelphia to London

Cheap return flights

These are some of the best return flight deals from Philadelphia to London that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Philadelphia to London.

Cheap last-minute flights

Planning a quick getaway from Philadelphia to London? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Philadelphia to London

Find recent round-trip train or bus tickets from Philadelphia to London.

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
11:10 - 05:55PHL-LHR
13h 45m1 stop
08:25 - 19:07LHR-PHL
15h 42m1 stop
£375JetBlue
Find Deal
Tue, 21 Jan - Tue, 28 Jan
10:59 - 05:55PHL-LHR
13h 56m1 stop
08:25 - 16:43LHR-PHL
13h 18m1 stop
£396JetBlue
Find Deal
Sat, 18 Jan - Fri, 24 Jan
11:10 - 05:55PHL-LHR
13h 45m1 stop
08:25 - 19:07LHR-PHL
15h 42m1 stop
£409JetBlue
Find Deal
Mon, 13 Jan - Thu, 23 Jan
15:58 - 11:30PHL-LHR
14h 32m1 stop
15:15 - 10:24LHR-PHL
48h 09m2 stops
Sun, 26 Jan - Wed, 29 Jan
06:00 - 06:50PHL-LHR
19h 50m1 stop
15:15 - 10:24LHR-PHL
48h 09m2 stops
Wed, 22 Jan - Wed, 29 Jan
22:20 - 09:20PHL-LHR
7h 00mdirect
07:55 - 15:30LHR-PHL
12h 35m1 stop
£554Iberia
Find Deal
Tue, 25 Mar - Wed, 2 Apr
21:21 - 09:20PHL-LHR
6h 59mdirect
06:30 - 16:40LHR-PHL
15h 10m1 stop
£555British Airways
Find Deal
Mon, 13 Jan - Thu, 23 Jan
18:40 - 06:35PHL-LHR
6h 55mdirect
06:30 - 16:35LHR-PHL
15h 05m1 stop
£557British Airways
Find Deal
Wed, 12 Feb - Wed, 19 Feb
21:21 - 09:20PHL-LHR
6h 59mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£559Iberia
Find Deal
Wed, 12 Feb - Wed, 19 Feb
20:35 - 12:40PHL-LHR
11h 05m1 stop
13:25 - 19:05LHR-PHL
10h 40m1 stop
£618Aer Lingus
Find Deal
Thu, 17 Apr - Sun, 27 Apr
06:00 - 14:25PHL-LHR
27h 25m2 stops
Thu, 30 Jan
06:00 - 14:25PHL-LHR
27h 25m2 stops
Tue, 4 Feb
06:00 - 14:25PHL-LHR
27h 25m2 stops
Thu, 30 Jan
11:10 - 05:55PHL-LHR
13h 45m1 stop
£184JetBlue
Find Deal
Tue, 21 Jan
11:10 - 05:55PHL-LHR
13h 45m1 stop
£204JetBlue
Find Deal
Sun, 26 Jan
08:05 - 12:50PHL-LHR
23h 45m3 stops
£282WestJet
Find Deal
Mon, 3 Feb
18:40 - 06:35PHL-LHR
6h 55mdirect
£369British Airways
Find Deal
Sun, 26 Jan
18:40 - 06:35PHL-LHR
6h 55mdirect
£372British Airways
Find Deal
Sun, 19 Jan
21:21 - 09:20PHL-LHR
6h 59mdirect
£377Iberia
Find Deal
Mon, 20 Jan
18:30 - 06:40PHL-LHR
7h 10mdirect
£452Iberia
Find Deal
Tue, 13 May
18:18 - 05:55PHL-LHR
30h 37m1 stop
08:25 - 19:07LHR-PHL
15h 42m1 stop
£855JetBlue
Find Deal
Thu, 19 Dec - Fri, 17 Jan
08:15 - 05:55PHL-LHR
16h 40m1 stop
08:25 - 17:33LHR-PHL
14h 08m1 stop
£857JetBlue
Find Deal
Fri, 20 Dec - Wed, 25 Dec
08:15 - 05:55PHL-LHR
16h 40m1 stop
08:25 - 19:07LHR-PHL
15h 42m1 stop
£949JetBlue
Find Deal
Fri, 20 Dec - Fri, 10 Jan
13:37 - 21:40PHL-LHR
27h 03m2 stops
18:40 - 20:59LHR-PHL
31h 19m2 stops
£1,011
Find Deal
Mon, 23 Dec - Tue, 31 Dec
06:05 - 10:05PHL-LHR
23h 00m3 stops
14:50 - 14:50LHR-PHL
29h 00m3 stops
£1,033
Find Deal
Thu, 19 Dec - Fri, 17 Jan
13:40 - 08:15PHL-LHR
13h 35m1 stop
13:10 - 16:20LHR-PHL
8h 10mdirect
£1,055British Airways
Find Deal
Mon, 23 Dec - Tue, 31 Dec
18:45 - 22:30PHL-LHR
22h 45m1 stop
15:40 - 16:55LHR-PHL
30h 15m1 stop
£1,100British Airways
Find Deal
Sun, 22 Dec - Tue, 31 Dec
18:55 - 08:25PHL-LHR
32h 30m2 stops
11:55 - 19:56LHR-PHL
13h 01m1 stop
£1,345Iberia
Find Deal
Mon, 23 Dec - Tue, 31 Dec
21:15 - 09:20PHL-LHR
7h 05mdirect
10:35 - 19:29LHR-PHL
13h 54m1 stop
£1,537Iberia
Find Deal
Mon, 23 Dec - Thu, 2 Jan
21:10 - 16:50PHL-LHR
14h 40m1 stop
08:50 - 17:33LHR-PHL
13h 43m2 stops
£1,704Aer Lingus
Find Deal
Thu, 19 Dec - Sun, 22 Dec
21:21 - 09:20PHL-LHR
6h 59mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£567British Airways
Find Deal
Tue, 4 Feb - Tue, 11 Feb
21:21 - 09:20PHL-LHR
6h 59mdirect
10:15 - 13:30LHR-PHL
8h 15mdirect
£568Iberia
Find Deal
Tue, 4 Feb - Wed, 12 Feb
22:20 - 09:20PHL-LHR
7h 00mdirect
14:45 - 18:55LHR-PHL
8h 10mdirect
£569British Airways
Find Deal
Tue, 11 Mar - Thu, 27 Mar
19:35 - 07:45PHL-LHR
7h 10mdirect
09:45 - 12:30LHR-PHL
7h 45mdirect
£569Iberia
Find Deal
Tue, 22 Apr - Wed, 30 Apr
18:40 - 06:35PHL-LHR
6h 55mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£573British Airways
Find Deal
Tue, 21 Jan - Tue, 28 Jan
18:40 - 06:35PHL-LHR
6h 55mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£579Iberia
Find Deal
Tue, 14 Jan - Tue, 21 Jan
18:40 - 06:35PHL-LHR
6h 55mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£583Finnair
Find Deal
Tue, 25 Feb - Wed, 5 Mar
18:40 - 06:35PHL-LHR
6h 55mdirect
10:15 - 13:30LHR-PHL
8h 15mdirect
£584Finnair
Find Deal
Sun, 12 Jan - Tue, 21 Jan
21:21 - 09:20PHL-LHR
6h 59mdirect
13:10 - 16:20LHR-PHL
8h 10mdirect
£591American Airlines
Find Deal
Tue, 14 Jan - Tue, 21 Jan
21:21 - 09:20PHL-LHR
6h 59mdirect
10:15 - 13:20LHR-PHL
8h 05mdirect
£592American Airlines
Find Deal
Wed, 12 Feb - Wed, 19 Feb

British Airways flights from Philadelphia to London Heathrow Airport

Our best British Airways deals on Philadelphia to London Heathrow Airport flight tickets
British Airways
13 Jan
PHL21:21Philadelphia
6h 59m
LHR09:20London Heathrow
23 Jan
LHR06:30London Heathrow
15h 10m
1 stop
PHL16:40Philadelphia
British Airways
12 Feb
PHL18:40Philadelphia
6h 55m
LHR06:35London Heathrow
19 Feb
LHR06:30London Heathrow
15h 05m
1 stop
PHL16:35Philadelphia
British Airways
12 Jan
PHL18:40Philadelphia
6h 55m
LHR06:35London Heathrow
22 Jan
LHR10:40London Heathrow
11h 00m
1 stop
PHL16:40Philadelphia

JetBlue flights from Philadelphia to London Heathrow Airport

Our best JetBlue deals on Philadelphia to London Heathrow Airport flight tickets
JetBlue
21 Jan
PHL11:10Philadelphia
13h 45m
1 stop
LHR05:55London Heathrow
28 Jan
LHR08:25London Heathrow
15h 42m
1 stop
PHL19:07Philadelphia
JetBlue
18 Jan
PHL10:59Philadelphia
13h 56m
1 stop
LHR05:55London Heathrow
24 Jan
LHR08:25London Heathrow
13h 18m
1 stop
PHL16:43Philadelphia
JetBlue
13 Jan
PHL11:10Philadelphia
13h 45m
1 stop
LHR05:55London Heathrow
23 Jan
LHR08:25London Heathrow
15h 42m
1 stop
PHL19:07Philadelphia

See travel insights to London from

How to get the cheapest flight ticket from Philadelphia to London Heathrow Airport

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 month to fly to London Heathrow Airport?

In general, October is the cheapest month to fly from Philadelphia to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £572. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Philadelphia averaging around £578.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Philadelphia is on a Sunday. momondo users have found tickets for Sunday departures for as low as £606. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Wednesday is £725.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is at midday. momondo users have found flights departing from Philadelphia to London Heathrow Airport at midday for as low as £572. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £690 on average. Flights to London Heathrow Airport from Philadelphia in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Philadelphia to London Heathrow flight route?

Fly from Philadelphia to London Heathrow for the best Philadelphia - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

Most flyers found that booking tickets 56 days in advance of their planned departure date is the best time to get cheap flights to London Heathrow Airport. During this timeframe, flight prices are around £682. However, in the past 72 hours, people saw flights from Philadelphia for as low as £422.

What cabin class options are available on Philadelphia to London Heathrow flights?

There are 3 cabin classes available to choose from on Philadelphia to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to London Heathrow Airport flights?

You could potentially save up to 49% on your flight if you consider stops on a Philadelphia to London Heathrow Airport flight.

How have Philadelphia to London Heathrow Airport flight prices changed over time?

As of December 2024, prices for Philadelphia to London Heathrow Airport flights are approximately 1% cheaper when compared to flights at the same time last year.

When to book flights from Philadelphia to London Heathrow Airport

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

Cheap Philadelphia to London Heathrow Airport (PHL to LHR) flight deals and tips

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

Best price found

£177

Fastest flight time

6h 55m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Philadelphia in the past 72 hours is £177. The best return flight deal from Philadelphia to London Heathrow Airport found on momondo in the last 72 hours is £375.
The fastest flight from Philadelphia to London Heathrow Airport takes 6h 55m
Direct flights go from Philadelphia to London Heathrow Airport every day.

  • How far is Philadelphia to London Heathrow by plane?

    The distance between Philadelphia and London Heathrow is about 3526.0 mi. In terms of flight time, this usually takes a little over 6h 55m.

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

    Prices for flights from Philadelphia Airport to London Heathrow Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to London Heathrow Airport.

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

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Philadelphia to London Heathrow Airport?

  • What is the most popular airline from Philadelphia to London Heathrow Airport?


Best airlines flying from Philadelphia to London Heathrow Airport

Compare and see reviews for airlines that fly from Philadelphia to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom £460Free CancellationRating
7.0
2,655 reviews
Search Iberia flights
British AirwaysPriceFrom £483Free CancellationRating
6.6
6,817 reviews
Search British Airways flights
JetBluePriceFrom £497Free CancellationRating
7.4
3,274 reviews
Search JetBlue flights
Aer LingusPriceFrom £522Free CancellationRating
7.1
1,078 reviews
Search Aer Lingus flights
  • Aer Lingus Flights From Philadelphia to London Heathrow Airport

    Aer Lingus flies from Philadelphia to London Heathrow Airport around 7 times per week, with 1,078 momondo users rating the airline 7.1/10. The cheapest Aer Lingus deal from Philadelphia to London Heathrow Airport in the last 72 hours was £662 (round-trip), much lower than the average airfare cost of £875 for Aer Lingus flights on this route.

  • Iberia Flights From Philadelphia to London Heathrow Airport

    The best Iberia deal for Philadelphia to London Heathrow Airport flight tickets found on momondo in the last 72 hours was £583, round-trip. It should be noted that an average Iberia flight deal for this route in this time was higher, at £769 round-trip. Iberia operates 14 flights out of Philadelphia into London Heathrow Airport in an average week, so prices vary by time and availability. 2,655 Iberia reviews by users on momondo have scored the airline at 7.0/10.


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?

momondo provides multiple filters to help you find the best flight to London from Philadelphia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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 Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Tue 24/12
Tue 31/12
Email me momondo's favourite deals

Find better results for your trip to London