Cheap flights from Ontario to Las Vegas

One-way fares from $18 · ONT → LAS · prices found by travellers in the last 48 hours

Compare all dates Las Vegas → Ontario
Cheapest fare
$18

Frontier Airlines · Wed, Nov 25

Cheapest month
November

from $18

Direct flights
Yes

Frontier Airlines and Southwest Airlines

Flight time
1h 05m

330 km

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Cheapest month to fly from Ontario to Las Vegas

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $18
  2. December 2026 $19
  3. January 2027 $26
  4. February 2027 $22
  5. March 2027 $63
  6. April 2027 $201
  7. May 2027 $188
  8. July 2027 $204
  9. September 2027 $331

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

Frontier Airlines
Depart08:15 Wed, Nov 25ONT → LAS 1h 06m · Direct
$18one way, per person
View deal
Frontier Airlines
Depart17:07 Wed, Nov 18ONT → LAS 1h 11m · Direct
$24one way, per person
View deal
Frontier Airlines
Depart10:35 Tue, Nov 17ONT → LAS 1h 07m · Direct
$43one way, per person
View deal
Frontier Airlines
Depart12:01 Thu, Nov 12ONT → LAS 3h 18m · 1 stop
$109one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to Las Vegas

Where to stay, what to do and getting around, from our travel partners.

Where to stay

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Getting around

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About flights from Ontario to Las Vegas

Ontario (ONT) and Las Vegas (LAS) are about 330 km apart. Direct flights take around 1h 05m, and recent direct fares were with Frontier Airlines and Southwest Airlines. Over the next few months, one-way fares start from $18, and November 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Ontario to Las Vegas?

The cheapest one-way fare we've seen recently is $18 with Frontier Airlines, departing Wednesday, November 25, 2026. Over the coming months, the lowest fare in each month ranges from $18 to $331.

What is the cheapest month to fly from Ontario to Las Vegas?

November 2026 currently has the lowest fares, from $18 one way.

Are there direct flights from Ontario to Las Vegas?

Yes. Recent direct fares were with Frontier Airlines and Southwest Airlines.

How long is the flight from Ontario to Las Vegas?

A direct flight takes about 1h 05m. Ontario and Las Vegas are around 330 km apart.

Which airlines fly from Ontario to Las Vegas?

Recent fares on this route were with Frontier Airlines, Southwest Airlines and United Airlines.

More cheap flights from Ontario

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