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Finnair flights from London to Philadelphia (LON - PHL)

LON — PHL
5 May — 12 May1
1 adult

Cheapflights users flying from London to Philadelphia on Finnair typically fly into Philadelphia and depart from London Heathrow. Select your dates above for pricing.

Finnair flights from London to Philadelphia in 2025

Find detailed information about Finnair flights from London to Philadelphia. Explore the options provided by Finnair to plan your journey from London to Philadelphia. Data last updated 30 April 2025.

One-way from

£478

Return from

£459

Popular in

August

Cheapest in

February

Average price (all airlines)

£559
Finnair
  • Finnair
  • 12/5
  • Nonstop
  • 7h 45m total
  • London to Philadelphia
Finnair
  • Finnair
  • 13/5-15/7
  • 2 total stops
  • 24h 25m total
  • London to Philadelphia
Highest demand for flights from London to Philadelphia; 9% potential price increase.
Best time to find cheap flights from London to Philadelphia; 2% potential price drop.
Average price for all London to Philadelphia flights (one-way and round-trip).
  • Can I get a flight from London to Philadelphia on Finnair for under £800?

    There are 1 flights available on Finnair from London to Philadelphia for under £800. These prices can change based on many factors including date and time. To find LON-PHL flight prices for your dates, click here.

  • How do most travelers feel about Finnair?

    Finnair has received a 7.4/10 rating from 8,696 Cheapflights user reviews. If you wish to plan your next trip from London to Philadelphia with Finnair, enter your preferred travel dates above!

Find Finnair flight deals from London to Philadelphia

Cheapest Finnair flights from London to Philadelphia
Explore the most affordable Finnair flight options available from London to Philadelphia. Find the lowest fares with prices last updated on 30 April 2025.

Tue 13/507:45LHR - PHL
1 stop13h 05mFinnair
Tue 15/713:55PHL - LHR
1 stop11h 20mFinnair
Deal found 29/4£459

Travel insights for Finnair flights from London to Philadelphia

Get recent, data-driven insights about Finnair flights from London to Philadelphia including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London to Philadelphia with Finnair?

Use this chart to determine the optimal time to book a return flight from London to Philadelphia. Price data was last updated on 25 April 2025.

Booking with Finnair 88 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Philadelphia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London to Philadelphia with Finnair?

Currently, the most affordable month to book a Finnair flight from London to Philadelphia in March, with an average price of £315. Conversely, traveling with Finnair from London to Philadelphia in June will be the most expensive, with an average cost of £428. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Weekly Finnair flight availability from London to Philadelphia

The most Finnair flights from LON to PHL are scheduled on a Monday (3 on average). You will have fewer Finnair flight options on Friday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Philadelphia ranges from 69.0 - 112.0 inches per month. July is typically the wettest month, when rainfall can reach 112.0 mm. February is typically the driest time to visit Philadelphia when rainfall is around 69.0 mm.

Temperature in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).

Best time to book a flight from London to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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Fly from London to Philadelphia on another airline

Consider alternative airlines that service the Philadelphia area. Flight routes are based on user searches made on Cheapflights and were last updated on 30 April 2025.

See what others are saying about Finnair

Read reviews and see what other travellers are saying about their experiences with Finnair. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing Finnair for your next flight. Reviews last updated 30 April 2025.
Finnair
7.6
Good
1,273 reviews
Overview

Boarding

7.6

Food

6.7

Comfort

7.4

Crew

8.1

Entertainment

6.9

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