Cheap flights from London Heathrow Airport to Pennsylvania from £375
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Pennsylvania departing on 9/12. 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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Fly from
Fly to
Route
Depart
Return
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Thu 26/11
06:50-14:39
2 stops12h 49m
Philadelphia
Thu 3/12
09:15-07:10
2 stops16h 55m
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Mon 9/11
15:00-22:56
1 stop12h 56m
Philadelphia
Mon 16/11
10:30-07:10
2 stops15h 40m
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Wed 2/12
07:30-21:39
2 stops19h 09m
Philadelphia
Sat 12/12
06:00-09:10
2 stops22h 10m
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Wed 16/12
07:30-18:59
2 stops16h 29m
Philadelphia
Tue 5/1
06:15-07:10
2 stops43h 55m
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Wed 25/11
06:25-14:55
1 stop13h 30m
Philadelphia
Wed 2/12
18:35-06:35
Nonstop7h 00m
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Sun 1/11
09:50-16:10
1 stop11h 20m
Philadelphia
Sat 21/11
17:40-10:10
1 stop11h 30m
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Wed 25/11
10:35-13:45
Nonstop8h 10m
Philadelphia
Wed 2/12
18:35-06:35
Nonstop7h 00m
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Thu 29/10
09:50-17:10
1 stop11h 20m
Philadelphia
Mon 2/11
17:40-10:10
1 stop11h 30m
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Wed 25/11
09:20-11:48
1 stop31h 28m
Philadelphia
Wed 2/12
19:33-06:55
1 stop30h 22m
LondonPhiladelphia
LHR London Heathrow - PHL Philadelphia
LHRPHL
London Heathrow
Thu 5/11
09:20-09:37
1 stop29h 17m
Philadelphia
Sat 14/11
15:35-06:55
1 stop10h 20m
See travel insights to Pennsylvania from
How to get the cheapest flight ticket from London Heathrow Airport to Pennsylvania
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 Pennsylvania?
In general, February is the cheapest month to fly from London Heathrow Airport to Pennsylvania. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £592. If you don’t want to visit Pennsylvania in February, then you should wait until March to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £604.
What is the cheapest day to depart on your flight to Pennsylvania?
According to our data, Tuesday is the cheapest day to fly to Pennsylvania from London Heathrow Airport. The lowest ticket price found for a Tuesday departure recently was £662. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Pennsylvania is Sunday, with ticket prices averaging around £731.
What is the cheapest time of day to depart on your flight to Pennsylvania?
Flying to Pennsylvania from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as £696 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to Pennsylvania is at midday when prices are around £698.
What is the cheapest London Heathrow to Pennsylvania flight route?
Fly from London Heathrow to Philadelphia for the best London Heathrow - Pennsylvania flight prices
How far in advance should I book a flight from London Heathrow Airport to Pennsylvania?
You are more likely to see cheaper flights to Pennsylvania from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Pennsylvania for around £698 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Pennsylvania from London Heathrow Airport for as low as £582 on momondo.
What cabin class options are available on London Heathrow Airport to Pennsylvania flights?
There are 4 cabin classes available to choose from on London Heathrow Airport to Pennsylvania flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from London Heathrow to Pennsylvania?
JetBlue and United Airlines are the most popular carriers operating from London Heathrow to Pennsylvania
Which airlines fly to Pennsylvania?
British Airways, Aer Lingus and Finnair are the top three most popular airlines that fly to Pennsylvania from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 66% of people opting to fly with this airline when travelling to Pennsylvania. Keep in mind that there are 10 different airlines that fly to Pennsylvania on a routine basis, so you have a few additional options to choose from.
How many flights depart from London Heathrow Airport to Pennsylvania on average per day?
As of October 2026, 20 flights take off from London Heathrow Airport and land in Pennsylvania each day. The most common flight departure time for this route is 13:00, with 75% of daily flights taking off in the afternoon.
How many flights depart from London Heathrow Airport to Pennsylvania on average per week?
As of October 2026, 142 flights take off from London Heathrow Airport and land in Pennsylvania each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.
Cheap London Heathrow Airport to Pennsylvania flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Pennsylvania
Frequently asked questions about flying from London Heathrow Airport to Pennsylvania
When did momondo last update prices for flights from London Heathrow Airport to Pennsylvania?
Prices for flights from London Heathrow Airport to Pennsylvania refresh daily.
How many operators does momondo search for flights from London Heathrow Airport to Pennsylvania?
There are 10 operators available for flights from London Heathrow Airport to Pennsylvania as of October 2026.
How old do you have to be to fly from London Heathrow Airport to Pennsylvania?
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 London Heathrow Airport to Pennsylvania.
What documentation or ID do you need to fly to Pennsylvania?
The necessary travel and health documents for your Pennsylvania 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 plane model from London Heathrow Airport to Pennsylvania?
momondo data reveals that the most frequently booked plane model on the route from London Heathrow Airport to Pennsylvania is Airbus A350-1000, representing 29.12% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 29.09%, Boeing 787-8 Dreamliner at 11.62%, and Boeing 777 at 7.89%.
Best airlines flying from London Heathrow Airport to Pennsylvania
Compare and see reviews for airlines that fly from London Heathrow Airport to Pennsylvania with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £258 | Free Cancellation | Rating 7.5 694 reviews | |||
| PriceFrom £425 | Free Cancellation | Rating 7.1 3,048 reviews | |||
| PriceFrom £454 | Free Cancellation | Rating 7.6 1,421 reviews | |||
| PriceFrom £459 | Free Cancellation | Rating 7.0 3,247 reviews | |||
| PriceFrom £470 | Free Cancellation | Rating 7.3 1,825 reviews | |||
| PriceFrom £471 | Free Cancellation | Rating 7.0 12,159 reviews | |||
| PriceFrom £498 | Free Cancellation | Rating 7.4 10,353 reviews | |||
| PriceFrom £500 | Free Cancellation | Rating 6.7 8,260 reviews | |||
| PriceFrom £522 | Free Cancellation | Rating 6.8 8,274 reviews | |||
| PriceFrom £563 | Free Cancellation | Rating 6.9 758 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Pennsylvania?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Pennsylvania. momondo saves you time and could save you money on your trip.
Can I find flights from London to Pennsylvania with flexible booking policies on momondo?
All flight searches from London to Pennsylvania on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from London to Pennsylvania?
Once you have performed a search for London to Pennsylvania flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from London to Pennsylvania right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Pennsylvania, momondo offers a useful price alert feature which will track prices for flights to Pennsylvania from London and alert you when they change.