Cheapest return flights from Ontario to Las Vegas in May from 57€

AirHint found the following cheapest return flights from Ontario (ONT) to Las Vegas (LAS) in May 2026 (see full year).

Return flights

12 May - 13 May Frontier Airlines direct
06 May - 08 May Frontier Airlines direct
24 May - 27 May Frontier Airlines direct
18 May - 20 May Frontier Airlines direct
03 May - 08 May Frontier Airlines direct
02 May - 04 May Frontier Airlines direct
03 May - 04 May Frontier Airlines direct
20 May - 20 May Frontier Airlines direct
04 May - 11 May Frontier Airlines direct
03 May - 10 May Frontier Airlines direct
31 May - 04 Jun Southwest Airlines
30 May - 01 Jun Southwest Airlines
30 May - 07 Jun Southwest Airlines
28 May - 07 Jun Southwest Airlines

Also check the deals for one-way flights from Ontario to Las Vegas in May.

Powered by

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.

Book a cheap hotel in Las Vegas

Cheap car rent in Las Vegas

Feel free to contact us with any feedback or request another flight research.