01 · How to read this calendar
Transatlantic CAD demand
Cells describe typical CAD demand pressure on YYZ–LHR, not guaranteed prices. Soft months still spike around half-term holidays, Christmas and major London events.
Air Canada, British Airways and Virgin Atlantic fly YYZ–LHR nonstop, about 46 departures a week in the early October 2026 schedule, with Air Canada running 3–4 a day. Eastbound flights are scheduled at roughly 7 hours to 7 hours 20 minutes, mostly evening departures that land the next morning. The westbound return is about 8 hours.
Trip.com is useful for London hotels once dates lock; Redtag.ca packages appear more often on sun routes than on LHR, so flight-only is the usual pattern here.
02 · Month grid
YYZ → LHR fare pressure
Shoulder months are the classic Canadian play for London value.
January
SofterPost-holiday thaw
Mid-to-late January often eases after holiday VFR.
February
SofterDeep winter value
Outside half-terms, a quieter CAD window.
March
MixedBreak ripple
Ontario March Break can firm some banks.
April
MixedSpring shoulder
Easter spikes; mid-month can soften.
May
FirmerEarly summer ramp
Demand climbs into summer; book earlier.
June
PeakHigh summer start
Expect firmer CAD fares and fuller cabins.
July
PeakPeak summer
Expensive for many travellers; book early.
August
PeakLate summer
Still firm; last weeks can ease slightly.
September
EasingBack-to-school shift
Mid-month often starts to soften in CAD.
October
SofterAutumn value
A classic shoulder bargain window.
November
SofterLate autumn value
Often calm before December holiday banks.
December
PeakHoliday London
Christmas / New Year — book ahead.
03 · Midweek vs weekend
Transatlantic CAD levers
Tuesday and Wednesday eastbounds frequently undercut Friday leisure banks. Sunday westbound returns into YYZ can be pricey.
If you can overnight midweek in London, CAD totals often improve versus weekend-only trips.
04 · Booking tips
CAD habits for LHR
Start 2–4 months out for summer and Christmas. Shoulder months can be watched closer in.
Compare nonstop vs one-stop via Montréal or European hubs only if the CAD savings beat the lost day.
Shop in CAD and watch for fuel surcharge differences across carriers.
FAQ
Traveller questions
What is the cheapest month to fly YYZ to LHR?+
January–February and October–November often look softer outside holiday spikes. Always verify live CAD fares.
How long is Toronto to London Heathrow?+
Scheduled nonstops run about 7 hours to 7 hours 20 minutes eastbound (overnight) and about 8 hours westbound back to Pearson.
Should I connect via another hub?+
Only if savings are meaningful — a long connect can erase the CAD win.
Do I need a passport and ETA?+
Yes. Canadian citizens need a valid passport and a UK Electronic Travel Authorisation (ETA) for visits of up to 6 months. It costs £20. Apply only on GOV.UK or in the official UK ETA app (other websites may charge more). An ETA lasts two years or until your passport expires, whichever comes first, and it doesn’t guarantee entry. Other passports may have different rules.
Packages or flight-only?+
Flight-only via Travelpayouts is the usual LHR pattern; use Trip.com for hotels once dates lock.
Sources
Schedules checked 4–6 October 2026. Airlines change schedules and fees, so confirm with the airline or the official source before you book.