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.

cached prices · United States fares · USD

Flights from Ottawa (YOW) to London (LHR)

The cheapest one-way fare from Ottawa to London we have seen is $286 USD, departing Nov 7 (found Sep 19): WestJet WS 611, 1 stop, 15h30m.

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

Cheapest seen · One wayfound Sep 19

$286 USD

WestJet WS 611 · Nov 7 · 1 stop · 15h30m

Continue on the seller's site — $286

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.

Round trip: search live prices →

See more dates →

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, Nov 2026 is the cheapest we hold at $286 USD and Oct 2026 the most expensive at $348 USD — a spread of 22%.

Nonstop fares are held for 3 of the 8 departure dates seen; carriers seen: Air Canada, P3, Porter, WestJet.

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

London runs 5 hours ahead of Ottawa.

by month

Cheapest by month

Oct 2026
$348 USD
checked Sep 25
Nov 2026
$286 USD
checked Sep 25

by date

Cheapest one-way by date

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

Nov 7 · 16:20 YOW
WS6111 stop · 15h30m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
$286 USD
Continue on the seller's site — $286
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.
Oct 16 · 20:15 YOW
WS6191 stop · 34h50m
found Sep 25 · baggage and fare rules are shown by the seller — this price is the cached fare only
$348 USD
Continue on the seller's site — $348
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 · 06:10 YOW
WS6111 stop · 25h40m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
$386 USD
Continue on the seller's site — $386
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 · 18:55 YOW
PD2771 stop · 36h55m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
$394 USD
Continue on the seller's site — $394
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 · 17:40 YOW
PD21622 stops · 18h50m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
$411 USD
Continue on the seller's site — $411
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 · 17:40 YOW
PD21622 stops · 16h50m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
$419 USD
Continue on the seller's site — $419
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 · 10:35 YOW
P323312 stops · 22h45m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
$464 USD
Continue on the seller's site — $464
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 · 07:00 YOW
PD1502 stops · 24h40m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
$466 USD
Continue on the seller's site — $466
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 · 18:50 YOW
AC888Nonstop · 6h40m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
$699 USD
Continue on the seller's site — $699
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 · 21:40 YOW
AC888Nonstop · 6h40m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
$769 USD
Continue on the seller's site — $769
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.

All 11 cached dates

Nov 7 · 18:50 YOW
AC888Nonstop · 6h40m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
$769 USD
Continue on the seller's site — $769
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
P3
Porter
WestJet

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 $286 USD, departing Nov 7 (found Sep 19): WestJet WS 611, 1 stop, 15h30m.
Is there a nonstop flight from Ottawa to London?: Nonstop fares are held for 3 of the 8 departure dates seen; carriers seen: Air Canada, P3, Porter, WestJet.
Which month is cheapest to fly from Ottawa to London?: By month, Nov 2026 is the cheapest we hold at $286 USD and Oct 2026 the most expensive at $348 USD — a spread of 22%.
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

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

More from Ottawa

Other destinations with a cached fare from this origin, cheapest first.

More to London

Other origins with a cached fare to this destination, cheapest first.