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FLIGHT SAVINGS

How to save on flights from Toronto to London

Our analysis of past searches finds effective ways to save on flights from Toronto to London. If flights to London seem too expensive right now, these alternative booking strategies can help you get a cheaper fare. Our data shows savings of 15–30% on this route.

Content

    YTO
    LON

Book a YTO-LON roundtrip that costs less

Airlines often price the Toronto to London round-trip below the one-way, so you buy the pair and never fly the return. That is a spare return, a form of throwaway ticketing, and nothing is skipped mid-ticket: your checked bag and your outbound are unaffected. When the fare allows it, you can also reschedule or cancel the extra return.

StrategySpare return
Success ratehigh
Typical savings15–30%
Checked bagYes ✔️

Examples

  • Iberia, British Airways · Economy

    Jul 31 · 5:10 pm - 12:00 pm +1

    YYZ - LHR

    1 stop
    13h50m

    $968

    Spare return

    • Depart

      Fri, Jul 31

        • YYZ - LHR

    • Return

      Tue, Sep 29

      Spare return

        • LHR - YYZ

  • Porter Airlines, British Airways · Economy

    Apr 20 · 5:00 pm - 9:40 am +1

    YYZ - LHR

    1 stop
    11h40m

    $966

    Spare return

  • American Airlines · Economy

    Feb 28 · 6:17 pm - 10:25 am +1

    YYZ - LHR

    1 stop
    11h8m

    $771

    Spare return

Fly to a cheaper city and stop in London

A ticket to a city beyond London, routed through it, sometimes costs less than the London ticket itself. You get off at the layover and skip the last flight, a hidden city (or skiplagging). It is the one method here that leaves part of the ticket unflown, so travel with a carry-on, and it cannot be used on a round-trip: a missed segment cancels everything after it. Airlines tend to curb this practice, avoid doing it too often.

StrategyHidden city
Success ratemedium
Typical savings10–25%
Checked bagNo ❌

Examples

  • Iberia · Economy

    Jul 9 · 6:05 pm - 6:15 am +1

    YYZ - LHR

    Direct
    7h10m

    $971

    Hidden city

    • Thu, Jul 9

        • YYZ - LHR

        • LHR - CDG

        • Spare flight

  • United · Economy

    Jun 17 · 6:00 pm - 9:20 am +1

    YYZ - LHR

    1 stop
    10h20m

    $1,229

    Hidden city

  • KLM · Economy

    Sep 5 · 10:30 pm - 10:40 am +1

    YYZ - LHR

    Direct
    7h10m

    $724

    Hidden city

Return to another city and stop in Toronto

Instead of the Toronto to London round-trip, you book one multicity ticket: Toronto to London, then London to a third city with a stop in Toronto, where you get off and skip the last flight. That hidden return gives you the same round-trip for less. As with a hidden city, a segment goes unflown: travel with a carry-on, and avoid doing it too often.

StrategyHidden return
Success ratelow
Typical savings0–15%
Checked bagNo ❌

Examples

  • Air Transat, Porter Airlines · Economy

    Tue, Sep 22 · Sat, Oct 3

    YTZ - LGW

    1 stop
    /Direct
    10h
    /8h

    $573

    Hidden return
    Continue

    • Trip 1

      Tue, Sep 22

        • YTZ - LGW

    • Trip 2

      Sat, Oct 3

        • LGW - YYZ

        • YYZ - YUL

        • Spare flight

  • Air France, KLM · Business

    Sun, Jun 28 · Tue, Jul 7

    YYZ - LHR

    Direct
    /Direct
    7h15m
    /7h50m

    $5,038

    Hidden return

  • Iberia · Business

    Tue, Mar 24 · Thu, Apr 9

    YYZ - LHR

    Direct
    /Direct
    7h5m
    /8h5m

    $2,458

    Hidden return

Combine your trip with other upcoming flights

  • YTO
    LON
  • YTO

If you have other trips coming up, try combining them with the London one. Our multisearch engine searches several trips at once and finds ticket arrangements that cost less than the sum of their parts, such as nested or back-to-back tickets. The other trip can be to London again or somewhere else entirely, and it can be months away.

Questions about saving on flights to London

Can I buy a round-trip to London and not fly the return?

Yes, that is a spare return: nothing on the ticket is cancelled, you simply forfeit the return. On this route the round-trip priced below the one-way on most searches, saving 15–30%.

Is a hidden-city ticket safe on flights to London?

Safe enough with two rules: carry-on only, since a checked bag travels to the ticketed destination, and not too often, since airlines curb it. On this route a hidden city ticket routed through London priced below the London fare on a good share of searches, saving 10–25%.

Can I use a hidden-city ticket on a round trip to London?

Not on a plain round-trip: skipping a segment cancels everything after it, so you would lose the return. What works is a hidden return, one multicity ticket from Toronto to London and then from London to a third city routed through Toronto, where you get off. On this route it beat the round-trip fare on a minority of searches, saving 0–15%.

Is an open-jaw ticket cheaper than a one-way to London?

Not on this route so far: across our searches from Toronto to London, no open-jaw priced below the plain one-way, so no spare multicity to report.

These saving methods are found automatically by our flight search engine. For the full picture of the strategies and their trade-offs, see our guide to Airglitch booking strategies.

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Updated on September 4, 2026