cached prices · United States fares · USD
The cheapest one-way fare from Ottawa to London we have seen is $324 USD, departing Oct 16 (found Sep 25): British Airways BA 4171, 3 stops, 24h35m.
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 25
$324 USD
British Airways BA 4171 · Oct 16 · 3 stops · 24h35m
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about this route
By month, Oct 2026 is the cheapest we hold at $324 USD and Nov 2026 the most expensive at $343 USD — a spread of 6%.
No nonstop fare is held for the 8 departure dates seen — every row has at least one stop; carriers seen: Air Canada, British Airways, Porter, WestJet.
YOW serves Ottawa, Canada; STN serves London, United Kingdom.
London runs 5 hours ahead of Ottawa.
by month
Oct 2026
$324 USD
checked Sep 25
Nov 2026
$343 USD
checked Sep 25
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 · 24h35m
found Sep 25 · baggage and fare rules are shown by the seller — this price is the cached fare only
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Nov 3 · 06:10 YOW
WS6112 stops · 33h40m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
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 · 06:10 YOW
WS6112 stops · 28h45m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
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
PD21623 stops · 25h05m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
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 · 10:50 YOW
AC77662 stops · 19h35m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
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 · 19h35m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
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 · 05:30 YOW
WS5893 stops · 29h10m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
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 · 17h50m
found Sep 19 · baggage and fare rules are shown by the seller — this price is the cached fare only
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
Marketing carriers; the operating airline is shown by the seller.
questions
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Return: Flights from London (STN) to Ottawa (YOW) →Every route from Ottawa →Every route to London →
Other destinations with a cached fare from this origin, cheapest first.
Other origins with a cached fare to this destination, cheapest first.