Cheapest one-way flights from Ontario to Madrid in May from $538

Best time to book flights for Ontario (ONT) to Madrid (MAD) flights at AirHint

AirHint found the following cheapest one-way flights from Ontario (ONT) to Madrid (MAD) in May 2025 (see full year).

One-Way flights

24 May jetBlue
29 May Avianca
27 May Avianca
10 May Frontier Airlines
31 May Avianca
15 May Frontier Airlines
11 May British Airways
30 May Frontier Airlines
22 May Frontier Airlines
28 May British Airways

Also check the deals for return flights from Ontario to Madrid in May.

Skyscanner

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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