For quick access to Center City, SEPTA's Airport Line is efficient and operates from 5:00 a.m. to midnight.

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | Gurufare 3 stars |
Round-trip from | $607 (Mytrip) |
One-way from | $206 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $898 |
Good round-trip deal | $726 or less |
Good one-way deal | $448 or less |
Fly from
Fly to
Route
Depart
Return
Price
PhiladelphiaLondon
PHL - LTN
PHLLTN
Philadelphia
Mon 1/12
3:30 pm-8:10 pm
2 stops23h 40m
London Luton
Tue 1/20
8:50 pm-2:47 pm
3 stops22h 57m
PhiladelphiaLondon
PHL - LGW
PHLLGW
Philadelphia
Fri 1/16
5:30 am-10:00 am
1 stop23h 30m
London Gatwick
Mon 1/19
2:00 pm-3:41 pm
2 stops30h 41m
PhiladelphiaLondon
PHL - STN
PHLSTN
Philadelphia
Sun 1/11
3:30 pm-2:00 pm
2 stops17h 30m
London Stansted
Tue 1/20
8:10 am-2:47 pm
2 stops35h 37m
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Tue 1/6
7:45 pm-6:40 am
1 stop29h 55m
London Heathrow
Thu 1/15
8:30 am-4:05 pm
1 stop12h 35m
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Mon 1/12
6:02 am-9:20 am
2 stops22h 18m
London Heathrow
Tue 1/20
6:40 am-9:16 pm
3 stops19h 36m
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Fri 1/23
6:02 am-2:35 pm
3 stops27h 33m
London Heathrow
Fri 1/30
7:05 am-10:50 pm
3 stops20h 45m
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Sun 1/11
6:02 am-9:20 am
2 stops22h 18m
London Heathrow
Tue 1/20
6:40 am-9:16 pm
3 stops19h 36m
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Mon 1/12
1:30 pm-6:55 am
1 stop12h 25m
London Heathrow
Tue 1/20
9:20 am-6:23 pm
1 stop14h 03m
PhiladelphiaLondon
PHL - STN
PHLSTN
Philadelphia
Wed 3/25
7:50 am-10:50 pm
3 stops35h 00m
London Stansted
Mon 3/30
10:00 pm-3:44 pm
2 stops22h 44m
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Sat 5/2
3:15 pm-6:30 am
1 stop10h 15m
London Heathrow
Thu 5/7
8:25 am-7:30 pm
1 stop16h 05m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, November is the cheapest month in which you can book a flight from Philadelphia to London (average of $282). Flying from Philadelphia to London in June is currently the most expensive (average of $534). 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.
A simple way to save on the total cost of your ticket is to fly from Philadelphia to London at noon. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight in the afternoon.
Travelers seeking maximum savings on their Philadelphia to London flight should consider departing on Thursday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from PHL to LON are scheduled on a Monday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 on average).
Dublin (DUB) – chosen by Cheapflights users on 90% of 1-stop itineraries from Philadelphia to London on Cheapflights.
Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $687.
Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 9h 35m.
Flights via Atlanta (ATL) offer the fastest connection on this route, with an average layover time of 1h 38m.
Entertainment
Comfort
Crew
Boarding
Overall
Food
Reviews
Anonymous,May 2025
FRA - DFW
Entertainment
Comfort
Crew
Boarding
Overall
Food
Reviews
Anonymous,May 2025
FRA - DFW
Entertainment
Comfort
Crew
Boarding
Overall
Food
Reviews
Anonymous,May 2025
FRA - DFW
Entertainment
Comfort
Crew
Boarding
Overall
Food
Reviews
Anonymous,May 2025
FRA - DFW
Entertainment
Comfort
Crew
Boarding
Overall
Food
Reviews
Anonymous,May 2025
FRA - DFW
Entertainment
Comfort
Crew
Boarding
Overall
Food
Reviews
Anonymous,May 2025
FRA - DFW
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$503 | Average$638 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$505 | Average$834 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$508 | Average$729 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$514 | Average$778 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$522 | Average$792 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$560 | Average$936 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$578 | Average$785 | FlexibilityNo cancel fee | On-time77% |