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Flights from Ontario to London
There are no direct flights from Ontario to London. The fastest way is one stop via Denver or San Francisco, about 12h 09m door to door (207 connections a week on current schedules).
No direct flights · 6 connection options From 12h 09m Prices checked 14 days ago
Ontario to London at a glance
Cheapest returnUS$821Tue 13 Apr – Fri 16 AprFastest journey12h 09mVia Denver, on current schedules
Nonstop flightsNoneConnect via Denver or San Francisco
Best ways to fly from Ontario to London
Ranked by how easy the connection is: one airline or alliance first (bags and connection protected), then the quickest self-transfer options.
1Search
ONT Denver (DEN) LON
Leg 1: Frontier Airlines, Southwest Airlines, United Airlines · Leg 2: British Airways, United Airlines
Tue13:30 ONT16:31 DEN1h 29m connection18:00 DEN09:39 LONUnited Airlines
2Search
ONT San Francisco (SFO) LON
Leg 1: Frontier Airlines, United Airlines · Leg 2: British Airways, United Airlines, Virgin Atlantic
Wed14:45 ONT15:57 SFO1h 03m connection17:00 SFO11:06 LONUnited Airlines
3Search
ONT Dallas (DFW) LON
Leg 1: American Airlines, Frontier Airlines · Leg 2: American Airlines, British Airways
Sun14:30 ONT19:17 DFW1h 13m connection20:30 DFW11:16 LONAmerican Airlines
4Search
ONT Seattle (SEA) LON
Leg 1: Alaska Airlines, Frontier Airlines, SkyWest · Leg 2: Alaska Airlines, British Airways, Delta Air Lines
Tue17:45 ONT20:11 SEA1h 34m connection21:45 SEA14:40 LONAlaska Airlines
5Search
ONT Phoenix (PHX) LON
Leg 1: American Airlines, Southwest Airlines · Leg 2: American Airlines, British Airways
Sun19:15 ONT20:17 PHX2h 58m connection23:15 PHX16:37 LONAmerican Airlines + British Airways
6Search
ONT Atlanta (ATL) LON
Leg 1: Delta Air Lines · Leg 2: British Airways, Delta Air Lines, Virgin Atlantic
Wed12:30 ONT19:28 ATL2h 32m connection22:00 ATL10:52 LONDelta Air Lines
Connections are computed from flights actually flown over the last 8 weeks, with at least 45 minutes to change on one airline and 2 hours on separate tickets. Times are local. The search shows live itineraries and exact times.
Good to know
- Distance
- 8,725 km5,418 miles
- Journey time
- 12h 09mon current schedules
- Time difference
- +8hLondon vs Ontario
- Currency in London
- GBP
- Airports
- ONT → LGW, LHR, STN
Flights from Ontario to London: questions answered
Are there direct flights from Ontario to London?
No. There is no nonstop service, so you will connect, most easily in Denver, San Francisco and Dallas. Some connections are on one airline or alliance, so your bags and connection are protected on a single ticket.
How long is the flight from Ontario to London?
With one connection the journey usually takes around 12h 09m, depending on the layover. The straight-line distance is 8,725 km.
Where do you change planes between Ontario and London?
The best connecting points are Denver (DEN), San Francisco (SFO), Dallas (DFW) and Seattle (SEA). Frontier Airlines flies both legs via Denver, so you can book it as one ticket.
Which airports serve Ontario and London?
Ontario: Ontario International Airport (ONT). London: London Gatwick Airport (LGW), London Heathrow Airport (LHR), London Stansted Airport (STN) and London Luton Airport (LTN).
What is the time difference between Ontario and London?
London is 8 hours ahead of Ontario.
