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$90+ Direct flights from Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — SYD
14 Feb — 21 Feb1
1 adult
1 adult, Economy, 0 bags

Direct flights from Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Ontario
Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 15 January 2026.

Fri 27/221:43
ONT
-
LAS
Nonstop1h 10m
Frontier
Sun 1/320:21
LAS
-
ONT
Nonstop1h 08m
Frontier
Deal found 15/1$115
Wed 18/215:15
ONT
-
LAS
Nonstop1h 05m
Southwest
Tue 24/211:10
LAS
-
ONT
Nonstop1h 05m
Southwest
Deal found 14/1$230
Sun 8/221:00
ONT
-
LAS
Nonstop1h 05m
Southwest
Tue 10/211:10
LAS
-
ONT
Nonstop1h 05m
Southwest
Deal found 14/1$250
Mon 23/208:10
ONT
-
LAS
Nonstop1h 05m
Southwest
Mon 23/221:00
LAS
-
ONT
Nonstop1h 05m
Southwest
Deal found 13/1$256
Sat 7/205:30
ONT
-
LAS
Nonstop1h 05m
Southwest
Mon 9/221:00
LAS
-
ONT
Nonstop1h 05m
Southwest
Deal found 14/1$275
Sun 19/405:30
ONT
-
LAS
Nonstop1h 05m
Southwest
Tue 21/408:45
LAS
-
ONT
Nonstop1h 05m
Southwest
Deal found 14/1$290
Fri 6/205:40
ONT
-
LAS
Nonstop1h 05m
Southwest
Sun 8/212:45
LAS
-
ONT
Nonstop1h 05m
Southwest
Deal found 13/1$295
Thu 7/517:05
ONT
-
LAS
Nonstop1h 10m
Southwest
Sat 9/507:40
LAS
-
ONT
Nonstop1h 00m
Southwest
Deal found 14/1$316
Fri 13/219:15
ONT
-
LAS
Nonstop1h 05m
Southwest
Tue 17/219:30
LAS
-
ONT
Nonstop1h 00m
Southwest
Deal found 12/1$344
Thu 30/405:30
ONT
-
LAS
Nonstop1h 05m
Southwest
Sun 3/507:30
LAS
-
ONT
Nonstop1h 00m
Southwest
Deal found 14/1$359
Sat 23/505:30
ONT
-
LAS
Nonstop1h 05m
Southwest
Sun 24/512:05
LAS
-
ONT
Nonstop1h 05m
Southwest
Deal found 13/1$375
Fri 20/321:55
ONT
-
LAS
Nonstop1h 05m
Southwest
Sun 22/307:45
LAS
-
ONT
Nonstop1h 05m
Southwest
Deal found 13/1$389

Find direct flights from Ontario within your budget

 
Use the slider to find direct flights from Ontario within your budget. Price data is based on user searches made on Cheapflights. Over the past seven days, Cheapflights users made 647,157 searches. This data was last updated on 15 January 2026.

Fly to

Sydney

Route

Depart

Return

Price

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Fri 27/2

21:43-22:53

Nonstop1h 10m

Las Vegas Harry Reid Intl

Sun 1/3

20:21-21:29

Nonstop1h 08m

$115

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Wed 18/2

15:15-16:20

Nonstop1h 05m

Las Vegas Harry Reid Intl

Tue 24/2

11:10-12:15

Nonstop1h 05m

$230

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Sun 8/2

21:00-22:05

Nonstop1h 05m

Las Vegas Harry Reid Intl

Tue 10/2

11:10-12:15

Nonstop1h 05m

$250

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Mon 23/2

08:10-09:15

Nonstop1h 05m

Las Vegas Harry Reid Intl

Mon 23/2

21:00-22:05

Nonstop1h 05m

$256

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Sat 7/2

05:30-06:35

Nonstop1h 05m

Las Vegas Harry Reid Intl

Mon 9/2

21:00-22:05

Nonstop1h 05m

$275

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Tue 28/4

06:15-07:25

Nonstop1h 10m

Las Vegas Harry Reid Intl

Tue 5/5

08:45-09:50

Nonstop1h 05m

$290

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Mon 11/5

05:30-06:35

Nonstop1h 05m

Las Vegas Harry Reid Intl

Wed 13/5

18:30-19:35

Nonstop1h 05m

$290

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Fri 6/2

05:40-06:45

Nonstop1h 05m

Las Vegas Harry Reid Intl

Sun 8/2

12:45-13:50

Nonstop1h 05m

$295

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Fri 20/2

05:30-06:35

Nonstop1h 05m

Las Vegas Harry Reid Intl

Sun 22/2

22:20-23:20

Nonstop1h 00m

$295

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Sun 19/4

05:30-06:35

Nonstop1h 05m

Las Vegas Harry Reid Intl

Wed 22/4

21:10-22:10

Nonstop1h 00m

$316

Flights are sorted by cheapest return flights first.

Deals found on 13/1

Showing 1-10 of 23 results
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Best time to book a flight from Ontario

Have a flexible travel schedule? Discover the best time to fly from Ontario with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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