AirHint found the following cheapest return flights from Ottawa (YOW) to Glasgow (GLA) in May 2026 (see full year).

Return flights

15 May - 20 May	WestJet
15 May - 25 May	WestJet
19 May - 26 May	WestJet
20 May - 27 May	WestJet
17 May - 26 May	WestJet
19 May - 27 May	WestJet
15 May - 24 May	WestJet
19 May - 03 Jun	WestJet
17 May - 25 May	WestJet
19 May - 25 May	WestJet
20 May - 26 May	WestJet
19 May - 02 Jun	WestJet
19 May - 12 Jun	WestJet
20 May - 12 Jun	WestJet
20 May - 02 Jun	WestJet
27 May - 09 Jun	WestJet
12 May - 07 Jun	WestJet
11 May - 07 Jun	WestJet
27 May - 10 Jun	WestJet
18 May - 02 Jun	WestJet

Also check the deals for one-way flights from Ottawa to Glasgow 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.

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Cheapest return flights from Ottawa to Glasgow in May from $509

Return flights