Cheap flights from Ottawa to London from C$880 YOW → LGW, LHR, LTN

Found recently, and the cheapest we hold

It is also the cheapest return we hold, of any age.

What have prices looked like?

Over 35 days, 24 Sept to 11 Nov, the cheapest return we saw each day was C$928 (US$651) to C$1,306 (US$916).

At C$1,306 (US$916), the cheapest return found recently is at the high end of that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 30-night return fares leaving within 3 days of 15 Jun 2027 to compare.

Every date we hold

1 fares on 1 departure dates

Found recently, and the cheapest we hold

What have prices looked like?

Over 36 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was C$408 (US$286) to C$1,176 (US$825).

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

Yes. Among one-way fares leaving within 3 days of 27 Dec, 28 Dec costs C$787 (US$552): C$93 (US$65) less than the cheapest found recently.

Porter Airlines Canada · Ottawa/Macdonald-Cartier International Airport (YOW) → London Gatwick Airport (LGW) · 1 stop · found 3 days ago

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Every date we hold

7 fares on 6 departure dates

Return

The cheapest fares were 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (35 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Fares 30 to 59 days before departure were typically 8% lower than 14 to 29 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (36 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Ottawa to London?

The cheapest return found recently is C$1,306 (US$916) with WestJet, 15 Jun 2027 to 15 Jul 2027, found 6 days ago.

How much is a one-way flight from Ottawa to London?

The cheapest one-way found recently is C$880 (US$617) with Porter Airlines Canada, 27 Dec, found 2 days ago. The cheapest one-way we hold, of any age, is C$773 (US$542) with Air Canada, 27 Dec, found 3 days ago. The cheapest one-way fare on each of 6 departure dates is usually C$800 (US$561) to C$989 (US$694).

How far ahead should I book a flight from Ottawa to London?

In 35 days of prices between 24 Sept and 11 Nov, return fares were cheapest 0 to 6 days before departure. In 36 days of prices between 24 Sept and 11 Nov, one-way fares 30 to 59 days before departure were typically 8% lower than 14 to 29 days before departure.

How long is the flight from Ottawa to London?

The cheapest one-way found recently, with Porter Airlines Canada on 27 Dec, takes 15 h 55 min with 1 stop.

Which airlines have the cheapest flights from Ottawa to London?

Between 20 Dec and 28 Dec, Porter Airlines Canada has the cheapest one-way on 5 of the 6 departure dates we hold, and Air Canada on 1.