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Cheap flights to Ontario from C$ 101

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 27/4. 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.
WAS — ONT
2 Apr — 9 Apr1
1 adult
Tue 2/4
Tue 9/4

Flights to Ontario in 2024

Find the latest flights to Ontario in 2024, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 593,932 searches and data was last updated on 28 March 2024.

Popular in

December

Cheapest in

September

Average price

C$ 512

Round-trip from

C$ 280

One-way from

C$ 170
High demand for flights, 6% potential price rise
Best time to find cheap flights, 3% potential price drop
Average for round-trip flights in March 2024
From Toronto to Los Angeles
One-way flight from Toronto to Ontario (ONT)

Cheap flights to Ontario in March & April 2024

Discover affordable flights and deals to Ontario in March and April 2024. In the last 7 days, Cheapflights users made a total of 593,932 searches and data was last updated on 28 March 2024.
Check out some of the flights available from low prices to Ontario in March and April 2024. If these prices don't match your budget, be sure to check back soon for more deals.
Tue 30/41:53 p.m.DTW - ONT
1 stop8h 54mFrontier
Sat 11/510:57 p.m.ONT - DTW
1 stop11h 16mFrontier
Deal found 28/3C$ 163
Tue 30/46:55 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Thu 2/56:00 a.m.ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 27/3C$ 200
Sat 20/47:12 p.m.BUF - ONT
1 stop14h 19mFrontier
Sat 4/57:26 a.m.ONT - BUF
1 stop7h 46mFrontier
Deal found 27/3C$ 202
Tue 23/42:20 p.m.SEA - ONT
Nonstop2h 40mDelta
Sat 27/42:00 p.m.ONT - SEA
Nonstop2h 55mDelta
Deal found 26/3C$ 213
Sat 27/46:55 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Tue 30/47:00 a.m.ONT - SEA
1 stop4h 41mAlaska Airlines
Deal found 26/3C$ 226
Wed 17/47:00 a.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Wed 24/46:00 a.m.ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 27/3C$ 227
Thu 18/49:26 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Thu 25/47:00 a.m.ONT - SEA
1 stop5h 42mAlaska Airlines
Deal found 27/3C$ 239
Fri 26/411:00 a.m.DTW - ONT
1 stop22h 26mFrontier
Thu 2/510:59 p.m.ONT - DTW
1 stop10h 54mFrontier
Deal found 26/3C$ 239
Sat 27/41:32 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Tue 30/46:00 a.m.ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 26/3C$ 247

Ontario 2024 flight deals

Explore flight deals for Ontario in 2024, offering the best prices and options to suit your preferences. In the last 7 days, Cheapflights users made a total of 593,932 searches and data were last updated on 28 March 2024.
These are some of the best deals we've found on flights to Ontario in 2024 at this time. If these deals don't appeal to you, be sure to come back soon for more options.
Sat 18/59:00 a.m.SEA - ONT
1 stop7h 02mFrontier
Sun 19/510:32 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 137
Sat 1/69:00 a.m.SEA - ONT
1 stop7h 02mFrontier
Sun 2/610:34 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 143
Sat 1/61:57 p.m.SEA - ONT
Nonstop2h 44mFrontier
Sun 2/610:34 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 144
Wed 15/59:55 a.m.SEA - ONT
1 stop12h 05mFrontier
Tue 21/510:04 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 152
Tue 30/41:53 p.m.DTW - ONT
1 stop8h 54mFrontier
Sat 11/510:57 p.m.ONT - DTW
1 stop11h 16mFrontier
Deal found 28/3C$ 163
Fri 17/59:04 p.m.SEA - ONT
1 stop12h 00mFrontier
Tue 21/510:04 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 166
Wed 15/59:55 a.m.SEA - ONT
1 stop12h 05mFrontier
Mon 20/510:14 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 167
Wed 15/59:55 a.m.SEA - ONT
1 stop12h 05mFrontier
Sun 19/510:32 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 173
Tue 30/46:55 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Thu 2/56:00 a.m.ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 27/3C$ 200

Flights to Ontario departing soon

Discover available last-minute flight options to Ontario, providing immediate availability and potentially lower prices. In the last 7 days, Cheapflights users made a total of 593,932 searches and data was last updated on 28 March 2024.
Have a look at some of the best last-minute flights available departing to Ontario. It's recommended that you verify the details of your last-minute flight before booking.
Thu 4/42:55 p.m.SEA - ONT
1 stop6h 57mAlaska Airlines
Wed 17/46:00 a.m.ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 27/3C$ 334
Wed 3/46:47 a.m.SEA - ONT
Nonstop2h 38mAlaska Airlines
Wed 10/46:00 a.m.ONT - SEA
Nonstop2h 50mAlaska Airlines
Deal found 27/3C$ 390
Wed 3/46:47 a.m.SEA - ONT
Nonstop2h 38mAlaska Airlines
Wed 10/46:30 a.m.ONT - SEA
1 stop3h 52mAlaska Airlines
Deal found 27/3C$ 402
Wed 3/411:22 a.m.SEA - ONT
1 stop6h 20mAlaska Airlines
Wed 10/46:30 a.m.ONT - SEA
1 stop3h 52mAlaska Airlines
Deal found 27/3C$ 416
Thu 4/42:55 p.m.SEA - ONT
1 stop6h 57mAlaska Airlines
Mon 8/47:59 p.m.ONT - SEA
Nonstop2h 49mAlaska Airlines
Deal found 27/3C$ 429
Thu 4/49:25 p.m.SEA - ONT
Nonstop2h 34mAlaska Airlines
Wed 10/45:32 p.m.ONT - SEA
Nonstop2h 49mAlaska Airlines
Deal found 27/3C$ 438
Thu 4/42:55 p.m.SEA - ONT
1 stop6h 57mAlaska Airlines
Mon 8/46:30 a.m.ONT - SEA
1 stop6h 12mAlaska Airlines
Deal found 27/3C$ 443
Thu 4/49:25 p.m.SEA - ONT
Nonstop2h 34mAlaska Airlines
Wed 10/46:30 a.m.ONT - SEA
1 stop3h 52mAlaska Airlines
Deal found 27/3C$ 450
Thu 4/49:25 p.m.SEA - ONT
Nonstop2h 34mAlaska Airlines
Mon 8/45:32 p.m.ONT - SEA
Nonstop2h 49mAlaska Airlines
Deal found 27/3C$ 465

One-way flights to Ontario

Explore one-way flight options to Ontario for greater flexibility in your travel plans. Find up-to-date pricing and availability for one-way flights. In the last 7 days, Cheapflights users made a total of 593,932 searches and data was last updated on 28 March 2024.
Choose from one of these one-way flights departing to Ontario. Those seeking round-trip flights to Ontario should utilize the search form at the top of the page.
Sat 27/47:55 a.m.SEA - ONT
Nonstop2h 45mDelta
Deal found 27/3C$ 101
Thu 25/410:04 p.m.SEA - ONT
1 stop8h 22mFrontier
Deal found 27/3C$ 107
Mon 22/49:26 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 27/3C$ 114
Wed 8/57:00 a.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 26/3C$ 121
Thu 25/47:00 a.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 27/3C$ 148
Mon 27/59:26 p.m.SEA - ONT
Nonstop2h 32mAlaska Airlines
Deal found 27/3C$ 162
Sun 26/54:25 p.m.SEA - ONT
1 stop5h 30mAlaska Airlines
Deal found 27/3C$ 174
Wed 10/410:30 a.m.SEA - ONT
Nonstop2h 42mDelta
Deal found 27/3C$ 182
Tue 23/410:00 a.m.BLI - ONT
1 stop11h 57mMultiple Airlines
Deal found 26/3C$ 185

Direct flights to Ontario

Thu 16/52:32 p.m.SEA - ONT
Nonstop2h 44mFrontier
Tue 21/510:04 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 106
Sat 18/51:57 p.m.SEA - ONT
Nonstop2h 44mFrontier
Sun 19/510:32 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 111
Thu 16/52:32 p.m.SEA - ONT
Nonstop2h 44mFrontier
Mon 20/510:14 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 121
Thu 16/52:32 p.m.SEA - ONT
Nonstop2h 44mFrontier
Sun 19/510:32 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 126
Sat 1/61:57 p.m.SEA - ONT
Nonstop2h 44mFrontier
Sun 2/610:34 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 27/3C$ 144
Tue 30/46:55 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Thu 2/56:00 a.m.ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 27/3C$ 200
Tue 23/47:55 a.m.SEA - ONT
Nonstop2h 45mDelta
Sat 27/45:40 p.m.ONT - SEA
Nonstop2h 53mDelta
Deal found 28/3C$ 213
Sat 4/57:55 a.m.SEA - ONT
Nonstop2h 44mDelta
Tue 14/56:50 a.m.ONT - SEA
Nonstop3h 00mDelta
Deal found 27/3C$ 220
Wed 17/46:55 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Wed 24/46:00 a.m.ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 27/3C$ 227

Find flights to Ontario within your budget

Locate flights to Ontario that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 593,932 searches and data was last updated on 28 March 2024.

Fly from

Any airport

Budget

C$ 143 - C$ 497

Route

Depart

Return

Price

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 1/6

1 stop7h 02m

Ontario

Sun 2/6

Nonstop2h 53m

C$ 143

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 1/6

Nonstop2h 44m

Ontario

Sun 2/6

Nonstop2h 53m

C$ 144

Detroit Metropolitan Wayne CountyOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 30/4

1 stop8h 54m

Ontario

Sat 11/5

1 stop11h 16m

C$ 163

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 30/4

Nonstop2h 33m

Ontario

Thu 2/5

Nonstop2h 45m

C$ 200

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 20/4

1 stop14h 19m

Ontario

Sat 4/5

1 stop7h 46m

C$ 202

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 23/4

Nonstop2h 45m

Ontario

Thu 2/5

Nonstop2h 54m

C$ 213

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 4/5

Nonstop2h 44m

Ontario

Tue 14/5

Nonstop3h 00m

C$ 220

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 27/4

Nonstop2h 33m

Ontario

Tue 30/4

1 stop4h 41m

C$ 226

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 13/5

1 stop9h 44m

Ontario

Mon 20/5

1 stop8h 02m

C$ 497

Flights are sorted by cheapest first

Deals found on 27/3

Average price of flights to Ontario by month

Plan your trip to Ontario by taking into account the cheapest months to travel. The average price of a one-way flight to Ontario is currently C$ 144 while a round-trip flight costs C$ 223. Price data was last updated on 24 March 2024.

Currently, September is the cheapest month in which you can book a flight to Ontario (average of C$ 241). Flying to Ontario in August will prove the most costly (average of C$ 539). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

January

C$ 412

February

C$ 466

March

C$ 497

April

C$ 558

May

C$ 715

June

C$ 670

July

C$ 632

August

C$ 732

September

C$ 327

October

C$ 515

November

C$ 651

December

C$ 519

Temperature and rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average temperature and rainfall totals by month.

LAX

Temperature

14 - 23 °C

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

When is the best time to book a flight to Ontario?

Use this chart to determine the optimal time to book a round-trip flight to Ontario. Price data was last updated on 28 January 2024.
The best time to book flights to Ontario is 75 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

When is the cheapest time to fly to Ontario?

Use this chart to determine the cheapest time to fly round-trip to Ontario. Price data was last updated on 24 March 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Users looking for the lowest fares to Ontario should consider flying on Friday mornings, when prices are typically cheapest. Budget-minded travellers will want to avoid Monday afternoons, when prices are usually at their highest.
Search Deals

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 28 March 2024.
Read through reviews of airlines servicing Ontario, such as United Airlines, American Airlines and WestJet Encore. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,127 reviews

Crew

8.6

Entertainment

7.4

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

8.1
Very good
9,127 reviews
8.1
Very good
9,127 reviews

Crew

8.6

Entertainment

7.4

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

8.1
Very good
11,418 reviews
8.1
Very good
9,127 reviews

Crew

8.6

Entertainment

7.4

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

7.9
Good
1,691 reviews
8.1
Very good
9,127 reviews

Crew

8.6

Entertainment

7.4

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

7.4
Good
11,481 reviews
8.1
Very good
9,127 reviews

Crew

8.6

Entertainment

7.4

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

7.3
Good
15,202 reviews
8.1
Very good
9,127 reviews

Crew

8.6

Entertainment

7.4

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

  • How long is the flight to Ontario, CA?

    There are numerous options when flying from Canada to Ontario, California, and a vast number of those options to Ontario International Airport (ONT) have only one stop. Typically speaking, one can expect that the total travel time to be anywhere from 5h to 10h, give or take a few minutes, depending on how many stops are made. For example, a flight from Calgary international airport may take 5h 1m with a stop in SFO, while another set of flights leaving from Montreal might only take 8h 48m with two stops. For travelers who opt to take their time, or may want to enjoy what another city has to offer, there are many choices that spread the entire trip to around 20 hours.

  • Where can you get direct flights to Ontario, California from?

    Many of the major cities in Canada offer direct flights to Ontario, California, such as Montreal, Toronto, and Vancouver. Typically, these flights are with major carriers such as Air Canada and American Airlines, and because they are direct flights, one can expect that the travel time is much faster than other options, and are usually completed in only a few hours or less.

  • How do you get from the Ontario International Airport to the city centre?

    The Ontario International Airport (ONT) is at the center of the city. Due to this, it is easy to use public transportation to get where one would like to be, or to arrange for a taxi pick up. Like most taxis in the United States, they are easily found curbside and are readily recognizable. Some will also provide the ability to prebook before arrival. One will also find plenty of car rental options with major companies at the airport near baggage claim.

  • What are some things to do in Ontario?

    Ontario is a large city in California, a little east of Los Angeles, and because of this, there are plenty of fun and exciting things that one can do. For example, the Planes of Fame Air Museum is a popular choice for those who want to see some history and experience a number of aviation exhibits that both educate and inspire. On a similar note, the Ontario Museum of History and Art is also very popular. There are a number of recreational parks to enjoy, as well as numerous restaurants, shops, and entertainment venues that cater to a wide variety of patrons and visitors.

  • Do I need a passport or visa to fly to Ontario, CA?

    Generally speaking, Canadian citizens do not need a visa to visit anywhere in the United States, only a valid passport. This assumes that the person coming from Canada into the United States is not there to work or study. In those cases, a visa is required. Fortunately, both visas and passports are easily obtained after a small amount of paperwork and a few days to a few weeks wait for processing depending on circumstances.

  • What does ONT mean?

    Great question - ONT just means Ontario Airport. Now you’ll know what this unique code and ones like it mean when you look for flights!

  • What airport do you fly into for flights to Ontario?

    Ontario (ONT), located 4.9 km from the city centre, is the airport you fly into when you book flights to Ontario.

See more FAQs

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