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Cheap First Class flights to Philadelphia

LHR — PHL
5 Dec — 12 Dec1
1 adult
1 adult, First, 0 bags

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Cheap first class flights to Philadelphia in 2025

Find the latest flights to Philadelphia in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data were last updated on 5 November 2025.

Arrival Airport

Philadelphia Airport
Closest airport for this route
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Travel insights for first class flights from United Kingdom to Philadelphia

Get recent, data-driven insights about first class flights from United Kingdom to Philadelphia including ideal travel times, pricing trends, and more.

What is the cheapest month to book a First Class flight from United Kingdom to Philadelphia?

Currently, May is the cheapest month in which you can book a First Class flight from United Kingdom to Philadelphia (average of £1,740). Flying from United Kingdom to Philadelphia in August is currently the most expensive (average of £2,870). There are several factors that can impact the price of a flight, so comparing airlines, departure airports, and flight times can provide users with more options.

Frequently asked questions about Philadelphia first class tickets

Find answers to common questions related to first class tickets for flights to Philadelphia. Get information on booking, amenities, upgrade options, and more. This FAQ section was last updated on 5 November 2025.

  • How many premium cabins does Finnair have for flights to Philadelphia?

    Finnair has 3 premium cabins on its schedule for flights to Philadelphia: Prem Economy Class, Business Class and First Class. If you prefer to see more cabin class options, you can try switching up different departure and/or arrival dates.

  • What is the cheapest month to book a First Class flight from United Kingdom to Philadelphia?

    Currently, May is the cheapest month in which you can book a First Class flight from United Kingdom to Philadelphia (average of £1,740). Flying from United Kingdom to Philadelphia in August is currently the most expensive (average of £2,870). There are several factors that can impact the price of a flight, so comparing airlines, departure airports, and flight times can provide users with more options.

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