flight_takeoff PHL → LHR

Cheap Flights from Philadelphia to London

Compare fares on the ultra-long-haul flight from Philadelphia to London — a northeastbound route of about 3,536 miles, typically flown nonstop in around 7h 35m.

straighten

Distance

3,536 mi

5,691 km

schedule

Est. flight time

7h 35m

nonstop

flight

Nonstop service

Available

4 carriers

language

Time difference

5 hours ahead

London

Flying from Philadelphia to London

Flights from Philadelphia International Airport (PHL) to London Heathrow Airport (LHR) cover roughly 3,536 miles (5,691 km) on a northeastbound heading, a nonstop flight of about 7h 35m. The route crosses 5 time zones — London is 5 hours ahead of Philadelphia. It's served by 4 airlines. As an international route, make sure your passport is valid and allow extra time for customs and immigration on arrival.

Lets Fly Travel compares live fares across hundreds of airlines to find the best deal on this route — and every booking is reviewed by a real travel agent before ticketing.

Airlines on this route

Carriers that have operated nonstop service between PHL and LHR include:

flightAmerican Airlines flightBritish Airways flightFinnair flightIberia Airlines

Airline availability and fares change over time — search your dates for current options.

Best time to fly Philadelphia to London

Fare patterns and travel conditions vary by season. Here's what to expect on the PHL–LHR route throughout the year.

Jan–Feb

Winter is often off-peak for London — expect fewer crowds and lower fares on the PHL–LHR route. Book early for spring breaks.

Mar–May

Spring brings pleasant weather to many destinations. Fares on the Philadelphia–London route can spike around school holidays — compare a few nearby dates.

Jun–Aug

Peak summer travel season. Philadelphia to London fares are typically at their highest. Book at least 6–8 weeks ahead and consider mid-week departures.

Sep–Oct

Shoulder season is often the sweet spot: good weather, thinner crowds, and more competitive fares on the PHL–LHR route.

Nov–Dec

Thanksgiving and Christmas drive fare spikes. If you're flying Philadelphia to London for the holidays, book as early as possible.

flight_land Arriving at

London Heathrow Airport

London is served by London Heathrow Airport (IATA: LHR , ICAO: EGLL). The airport is located in United Kingdom. As an international arrival, allow additional time for customs and immigration.

IATA Code

LHR

Flight Time

~7h 35m

Distance

3,536 mi

tips_and_updates Arrival tips

›Check in online to save time at the airport.
›Arrive 3 hours before departure.
›Carry a valid passport and check visa requirements.
›Compare fares across several nearby dates for best value.

Philadelphia to London — FAQs

How long is the flight from Philadelphia to London? expand_more

A nonstop flight from Philadelphia (PHL) to London (LHR) takes approximately 7h 35m, covering a distance of about 3536 miles (5691 km). Actual flight time varies with aircraft, routing and winds.

Which airlines fly from Philadelphia to London? expand_more

Airlines that have operated nonstop service on the PHL–LHR route include American Airlines, British Airways, Finnair, Iberia Airlines. Use our search to compare current carriers, schedules and fares.

Is there a nonstop flight from Philadelphia to London? expand_more

Yes. The PHL–LHR route has nonstop service. Nonstop availability can vary by season and day of week, so check live results for your dates.

How far is London from Philadelphia? expand_more

The distance from Philadelphia (PHL) to London (LHR) is about 3536 miles (5691 km) as the crow flies.

What is the time difference between Philadelphia and London? expand_more

London is 5 hours ahead of Philadelphia. Factor the time change into your arrival and connection planning.

When is the best time to book flights from Philadelphia to London? expand_more

For international trips like Philadelphia to London, booking roughly 2–6 months ahead and flying mid-week (Tuesday/Wednesday) tends to surface the lowest fares. Set up a search early and compare a few date options.

Do I need a passport to fly from Philadelphia to London? expand_more

Yes. Flights from Philadelphia to London are international, so you'll need a valid passport — and possibly a visa, depending on your nationality and London's entry requirements. Check the destination's current entry rules before you travel.