Flights from Philadelphia to London
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From $531 · Prices update daily
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The quick answer
Compare Philadelphia to London flights across 800+ airlines for the lowest fare. Cheapest month to fly: October. Visa-free for US passport holders (Canada).
Price calendar — next 60 days
★ Cheapest: $531 on Thu, Oct 1 · VS
Recently observed fares · Final price confirmed at booking
Price calendar — Philadelphia to London
Month-by-month lowest fares. Green = cheapest dates.
Airlines flying Philadelphia to London
American AirlinesApproximate: $520-$1,100 economy round trip; Flagship Business roughly $2,800-$5,500+ seasonal — verify on Aviasales before booking
Direct · 7h 0m eastbound / 8h 10m-8h 40m westbound (jet-stream asymmetry)
British AirwaysApproximate: $540-$1,150 economy round trip; Club Suite roughly $3,000-$6,000+ seasonal — verify on Aviasales before booking
Direct · 6h 55m eastbound / 8h 15m-8h 45m westbound
American Airlines (summer-peak rotation)Approximate: $520-$1,100 economy round trip; tracks the primary AA fare ladder — verify on Aviasales before booking
Direct · 7h 0m eastbound / 8h 10m-8h 40m westbound
Flying to London? Compare from other US cities
Sometimes a nearby airport is cheaper. See London fares from other departure cities.
Canada essentials
🟡 eTA / ESTA required
UK ETA required for US passport holders — £20, stays up to 6 months
Full London visa guide →🆘 Emergency
911
💱 Currency
Canadian Dollar (C$)
🕐 Time zone
UTC−3.5 to −8
🗣️ Language
English, French
🔌 Plugs
Type A/B · 120V
🚗 Driving
Right side
💡 Tipping
Expected — 15–20%
📞 Dial code
+1
🏛️ US Embassy
Ottawa · +1 613-688-5335
Entry rules can change — always confirm with official sources before booking.
Stay connected in London
Skip roaming fees — get a local eSIM before you land. Works in 200+ countries and activates instantly, so you’re online the moment you touch down.
Travel insurance
Protect your Philadelphia to London trip against delays, cancellations, and medical emergencies. US travelers can compare plans from top insurers.
Airport transfer in London
Pre-book your ride into London. Fixed price, meet & greet, and a driver waiting at arrivals — no meter anxiety after a long flight.
Flight delayed or cancelled?
If your Philadelphia to London flight was delayed more than 3 hours or cancelled, you may be entitled to up to €600 in compensation under EU/UK rules — even if you flew a non-EU airline. Free to check, no win no fee.
More resources
Philadelphia to London — frequently asked
How much is a flight from Philadelphia to London?+
Fares start around $531 round-trip. Prices update daily across 800+ airlines.
What is the cheapest month to fly Philadelphia to London?+
October typically has the lowest fares.
Do US citizens need a visa for Canada?+
Visa-free for US passport holders for stays up to 6 months. Visa-free for US citizens; passport required.
What currency is used in Canada?+
The Canadian Dollar (CAD, C$). The emergency number is 911.
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