AirHint found the following cheapest return flights from Ottawa (YOW) to London (LTN)
in May 2025 (see full year ).
Return flights
29 May
- 12 Jun
Porter Airlines (Canada) Ltd
$ 865
29 May
- 17 Jun
Porter Airlines (Canada) Ltd
$ 866
24 May
- 30 May
Porter Airlines (Canada) Ltd
$ 874
19 May
- 22 May
Porter Airlines (Canada) Ltd
$ 956
08 May
- 22 May
Porter Airlines (Canada) Ltd
$ 1083
13 May
- 19 May
Porter Airlines (Canada) Ltd
$ 1115
03 May
- 12 May
Air Transat
$ 1188
17 May
- 20 May
Porter Airlines (Canada) Ltd
$ 1228
08 May
- 14 May
Porter Airlines (Canada) Ltd
$ 1232
07 May
- 15 May
Porter Airlines (Canada) Ltd
$ 1260
05 May
- 12 May
Lufthansa
$ 1264
22 May
- 27 May
Porter Airlines (Canada) Ltd
$ 1285
Also check the deals for one-way flights from Ottawa to London in May .
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers.
Only the cheapest flights are offered.
Select a price to book and secure these cheap prices.
