cached prices · United States fares · USD

Flights from Ottawa (YOW) to London (LTN)

The cheapest one-way fare from Ottawa to London we have seen is $321 USD, departing Oct 16 (found Sep 25): British Airways BA 4171, 3 stops, 20h20m.

These are the fares the seller shows on its United States site, in USD; prices where you live may differ.

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Prices are the cached fare only; baggage and fare rules are shown by the seller.

about this route

Ottawa to London in numbers

By month, Oct 2026 is the cheapest we hold at $321 USD and Nov 2026 the most expensive at $416 USD — a spread of 30%.

No nonstop fare is held for the 8 departure dates seen — every row has at least one stop; carriers seen: Air Canada, British Airways, P3, Porter.

YOW serves Ottawa, Canada; LTN serves London, United Kingdom.

London runs 5 hours ahead of Ottawa.

by month

Cheapest by month

  • Oct 2026

    $321 USD

    checked Sep 25

  • Nov 2026

    $416 USD

    checked Sep 25

by date

Cheapest one-way by date

8 rows held, cheapest first — the cheapest nonstop and the cheapest with stops seen for each departure date.

  • Oct 16 · 16:00 YOW

    BA41713 stops · 20h20m

    found Sep 25 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $321 USD

    Continue on the seller's site — $321

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

  • Nov 3 · 14:00 YOW

    AC78693 stops · 18h45m

    found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $416 USD

    Continue on the seller's site — $416

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

  • Nov 8 · 17:40 YOW

    AC77762 stops · 15h30m

    found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $434 USD

    Continue on the seller's site — $434

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

  • Nov 5 · 12:45 YOW

    PD21582 stops · 20h20m

    found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $449 USD

    Continue on the seller's site — $449

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

  • Nov 4 · 15:15 YOW

    PD23452 stops · 21h05m

    found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $468 USD

    Continue on the seller's site — $468

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

  • Nov 7 · 10:35 YOW

    PD23312 stops · 16h30m

    found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $483 USD

    Continue on the seller's site — $483

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

  • Nov 2 · 15:15 YOW

    PD23453 stops · 20h40m

    found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $484 USD

    Continue on the seller's site — $484

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

  • Nov 1 · 15:15 YOW

    P323453 stops · 22h45m

    found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only

    $531 USD

    Continue on the seller's site — $531

    a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

carriers

Carriers seen on this corridor

  • Air Canada
  • British Airways
  • P3
  • Porter

Marketing carriers; the operating airline is shown by the seller.

questions

Questions

What is the cheapest fare from Ottawa to London?
The cheapest one-way fare from Ottawa to London we have seen is $321 USD, departing Oct 16 (found Sep 25): British Airways BA 4171, 3 stops, 20h20m.
Is there a nonstop flight from Ottawa to London?
No nonstop fare is held for the 8 departure dates seen — every row has at least one stop; carriers seen: Air Canada, British Airways, P3, Porter.
Which month is cheapest to fly from Ottawa to London?
By month, Oct 2026 is the cheapest we hold at $321 USD and Nov 2026 the most expensive at $416 USD — a spread of 30%.
How old is this price?
It is the cheapest fare we saw for that date. We look again at least once a day for the routes people search, and stop showing a price two days after we last saw it, so a price here can be up to four days old — the date beside it says when that was. The seller's page shows the price right now.
How does a2bflight rank results?
By price and duration only; commission never enters the order. Cheapest means cheapest among what the store holds for this corridor. A click that books may earn a2bflight a commission from the seller; the price you see is the seller's own. See how we rank and what we keep.

more routes

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Return: Flights from London (LTN) to Ottawa (YOW) →Every route from Ottawa →Every route to London →

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