Cheap Flights From Ontario Intl. Airport (ONT) To Harry Reid Intl. (LAS)

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Cheapest Flights from Ontario Intl. Airport (ONT) to Las Vegas (LAS)

The cheapest flights to Harry Reid Intl. found within the past 7 days were CA $324 round trip and CA $166 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Aug 13 - Wed, Aug 19
ONT
Ontario
LAS
Las Vegas
CA $324 Roundtrip, found 3 days ago
CA $324
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug 13 from Ontario to Las Vegas, returning Wed, Aug 19, priced at CA $324 found 3 days ago
Thu, Aug 13 - Wed, Aug 19
ONT
Ontario
LAS
Las Vegas
CA $370 Roundtrip, found 3 days ago
CA $370
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug 13 from Ontario to Las Vegas, returning Wed, Aug 19, priced at CA $370 found 3 days ago
Thu, Aug 13 - Wed, Aug 19
ONT
Ontario
LAS
Las Vegas
CA $375 Roundtrip, found 3 days ago
CA $375
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug 13 from Ontario to Las Vegas, returning Wed, Aug 19, priced at CA $375 found 3 days ago
Thu, Aug 13 - Wed, Aug 19
ONT
Ontario
LAS
Las Vegas
CA $392 Roundtrip, found 3 days ago
CA $392
Roundtrip
found 3 days ago
Select United flight, departing Thu, Aug 13 from Ontario to Las Vegas, returning Wed, Aug 19, priced at CA $392 found 3 days ago
Thu, Aug 13 - Wed, Aug 19
ONT
Ontario
LAS
Las Vegas
CA $415 Roundtrip, found 3 days ago
CA $415
Roundtrip
found 3 days ago
Select United flight, departing Thu, Aug 13 from Ontario to Las Vegas, returning Wed, Aug 19, priced at CA $415 found 3 days ago
Thu, Aug 13 - Wed, Aug 19
ONT
Ontario
LAS
Las Vegas
CA $418 Roundtrip, found 3 days ago
CA $418
Roundtrip
found 3 days ago
Select United flight, departing Thu, Aug 13 from Ontario to Las Vegas, returning Wed, Aug 19, priced at CA $418 found 3 days ago
Thu, Aug 13 - Mon, Aug 17
ONT
Ontario
LAS
Las Vegas
CA $419 Roundtrip, found 3 days ago
CA $419
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug 13 from Ontario to Las Vegas, returning Mon, Aug 17, priced at CA $419 found 3 days ago
Thu, Aug 13 - Wed, Aug 19
ONT
Ontario
LAS
Las Vegas
CA $426 Roundtrip, found 3 days ago
CA $426
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug 13 from Ontario to Las Vegas, returning Wed, Aug 19, priced at CA $426 found 3 days ago
Thu, Aug 13 - Wed, Aug 19
ONT
Ontario
LAS
Las Vegas
CA $436 Roundtrip, found 3 days ago
CA $436
Roundtrip
found 3 days ago
Select United flight, departing Thu, Aug 13 from Ontario to Las Vegas, returning Wed, Aug 19, priced at CA $436 found 3 days ago
Thu, Aug 13 - Wed, Aug 19
ONT
Ontario
LAS
Las Vegas
CA $458 Roundtrip, found 3 days ago
CA $458
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug 13 from Ontario to Las Vegas, returning Wed, Aug 19, priced at CA $458 found 3 days ago

Frequently asked questions

Are there direct flights from Los Angeles - Ontario Intl. Airport (ONT) to LAS?
If you'd like to get from ONT to LAS as fast as possible, you'll be glad to know multiple airlines offer direct flights. Choose your favorite seat with Southwest Airlines or Frontier Airlines.
What airlines fly from ONT to McCarran Intl. Airport (LAS)?
There are a number of airlines with direct flights from Ontario Airport to LAS. Southwest Airlines (WN) is one of the most reliable, and operates approximately 108 flights each month. If you want more options, look up the fares on offer from Frontier Airlines (F9). This airline has 43 flights each month. Between the two, there's no doubt you'll find the flight to suit your needs.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

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*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.