JFK → LHR
New York — John F. Kennedy
Typical low
$420
Best months: Jan–Feb, Nov
Norse, British Airways, and Virgin fight on this route — winter sub-$450 is common.
Cheap flights to London.
5 US gateways tracked, from $420 round-trip. Live metasearch pricing via Aviasales (Expedia, Trip.com, Kiwi, Booking, Priceline — all in one click).
— US gateways, cheapest first
Where to fly from.
"Typical low" is the round-trip price floor we've actually tracked on each route — not the average, and not a promo. Click through for live fares.
BOS → LHR
Boston Logan
Typical low
$450
Best months: Jan–Feb
BA and Delta compete fiercely — sub-$500 is a regular sight.
ATL → LHR
Atlanta Hartsfield
Typical low
$460
Best months: Jan–Feb
Delta hub — sub-$500 lands a few times per year.
ORD → LHR
Chicago O'Hare
Typical low
$470
Best months: Jan–Feb, Nov
BA, American, Virgin hubbed here — sub-$500 is common.
SFO → LHR
San Francisco
Typical low
$540
Best months: Jan, Nov
BA, Virgin, and United all run direct.
— FAQ
Flying to London.
- How much does a flight to London cost?
- Typical-low round-trip fares to London start at $420 from New York — John F. Kennedy — that's the floor we've tracked, not the average. Most transatlantic US gateways land in the $420–$540 range in shoulder season. Live metasearch prices update when you click any "Search flights" button on this page.
- Which US airport has the cheapest flights to London?
- From our tracked routes, New York — John F. Kennedy (JFK) has the cheapest anchor fare at $420. Norse, British Airways, and Virgin fight on this route — winter sub-$450 is common.
- When is the best time to fly to London for cheap fares?
- Shoulder-season windows for London vary by gateway — the route table above lists each one. Broadly, late autumn (Oct–Nov) and deep winter (Jan–Feb) are the most reliable cheap windows for long-haul fares; summer peaks push prices 40–60% higher.
- Are flights to London direct or do I need connections?
- It depends on the origin — hubs like JFK, ORD, LAX, and EWR have direct long-haul service to most big destinations; smaller airports usually connect through those hubs. Aviasales (where every CTA on this page routes) shows direct-only filters and connection counts on the results page.
- How do the prices on this page compare to Google Flights?
- The "typical low" anchors here come from our editor's historical tracking, not real-time scraping. The CTAs route to Aviasales metasearch, which pulls live fares from Expedia, Trip.com, Kiwi, Booking, Priceline, and the airlines directly — usually matching or beating Google Flights on the same routes.