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Cheap flights to Ontario from C$ 110

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 1/5. 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.
CMH — ONT
23 Apr — 30 Apr1
1 adult
Tue 23/4
Tue 30/4

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 506,061 searches and data was last updated on 18 April 2024.

Popular in

December

Cheapest in

September

Average price

C$ 487

Round-trip from

C$ 301

One-way from

C$ 170
High demand for flights, 6% potential price rise
Best time to find cheap flights, 4% potential price drop
Average for round-trip flights in April 2024
From Toronto to Los Angeles
One-way flight from Toronto to Ontario (ONT)

Cheap flights to Ontario in April & May 2024

Discover affordable flights and deals to Ontario in April and May 2024. In the last 7 days, Cheapflights users made a total of 506,061 searches and data was last updated on 18 April 2024.
Check out some of the flights available from low prices to Ontario in April and May 2024. If these prices don't match your budget, be sure to check back soon for more deals.
Tue 28/51:57 p.m.SEA - ONT
Nonstop2h 44mFrontier
Fri 31/510:24 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 17/4C$ 134
Tue 28/58:14 p.m.SEA - ONT
1 stop17h 20mFrontier
Fri 31/510:24 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 17/4C$ 167
Sat 4/57:12 p.m.BUF - ONT
1 stop7h 47mFrontier
Fri 10/512:55 a.m.ONT - BUF
1 stop14h 17mFrontier
Deal found 17/4C$ 204
Tue 28/58:14 p.m.SEA - ONT
1 stop17h 20mFrontier
Fri 31/511:04 p.m.ONT - SEA
1 stop9h 06mFrontier
Deal found 17/4C$ 214
Wed 8/51:53 p.m.DTW - ONT
1 stop11h 07mFrontier
Tue 14/58:48 p.m.ONT - DTW
1 stop13h 05mFrontier
Deal found 16/4C$ 224
Wed 1/510:50 a.m.DTW - ONT
1 stop22h 36mFrontier
Sun 5/57:31 a.m.ONT - DTW
1 stop23h 24mFrontier
Deal found 17/4C$ 235
Sat 11/57:25 a.m.SEA - ONT
Nonstop2h 39mDelta
Wed 15/56:50 a.m.ONT - SEA
Nonstop3h 00mDelta
Deal found 17/4C$ 244
Wed 15/57:25 a.m.SEA - ONT
Nonstop2h 39mDelta
Tue 21/56:42 p.m.ONT - SEA
Nonstop3h 02mDelta
Deal found 18/4C$ 247
Mon 6/57:02 p.m.BUF - ONT
1 stop14h 24mFrontier
Fri 10/512:55 a.m.ONT - BUF
1 stop14h 17mFrontier
Deal found 17/4C$ 259

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 506,061 searches and data were last updated on 18 April 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.
Tue 28/51:57 p.m.SEA - ONT
Nonstop2h 44mFrontier
Fri 31/510:24 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 17/4C$ 134
Tue 28/58:14 p.m.SEA - ONT
1 stop17h 20mFrontier
Fri 31/510:24 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 17/4C$ 167
Sun 25/87:51 p.m.SEA - ONT
1 stop13h 15mFrontier
Sat 31/810:06 a.m.ONT - SEA
Nonstop2h 47mFrontier
Deal found 17/4C$ 177
Fri 7/61:57 p.m.SEA - ONT
Nonstop2h 44mFrontier
Sun 9/611:56 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 17/4C$ 182
Sat 4/57:12 p.m.BUF - ONT
1 stop7h 47mFrontier
Fri 10/512:55 a.m.ONT - BUF
1 stop14h 17mFrontier
Deal found 17/4C$ 204
Tue 28/58:14 p.m.SEA - ONT
1 stop17h 20mFrontier
Fri 31/511:04 p.m.ONT - SEA
1 stop9h 06mFrontier
Deal found 17/4C$ 214
Wed 8/51:53 p.m.DTW - ONT
1 stop11h 07mFrontier
Tue 14/58:48 p.m.ONT - DTW
1 stop13h 05mFrontier
Deal found 16/4C$ 224
Sun 25/87:51 p.m.SEA - ONT
1 stop13h 15mFrontier
Sat 31/87:30 a.m.ONT - SEA
1 stop13h 41mFrontier
Deal found 17/4C$ 226
Fri 7/63:24 p.m.SEA - ONT
1 stop8h 18mFrontier
Sun 9/611:56 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 17/4C$ 229

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 506,061 searches and data was last updated on 18 April 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.
Wed 24/46:00 a.m.RNO - ONT
1 stop6h 12mDelta
Wed 1/55:45 a.m.ONT - RNO
1 stop6h 45mDelta
Deal found 17/4C$ 301
Thu 25/46:00 a.m.LGA - ONT
1 stop8h 22mDelta
Thu 25/410:00 p.m.ONT - LGA
1 stop7h 45mDelta
Deal found 17/4C$ 381
Tue 23/44:59 p.m.LGA - ONT
2 stops10h 00mDelta
Thu 25/410:00 p.m.ONT - LGA
1 stop8h 43mDelta
Deal found 17/4C$ 388
Wed 24/47:55 a.m.SEA - ONT
Nonstop2h 45mDelta
Sat 4/511:20 a.m.ONT - SEA
Nonstop2h 58mDelta
Deal found 17/4C$ 396
Thu 25/45:35 a.m.SEA - ONT
1 stop6h 37mDelta
Tue 30/411:20 a.m.ONT - SEA
Nonstop2h 59mDelta
Deal found 17/4C$ 408
Tue 23/412:00 p.m.LGA - ONT
1 stop10h 41mDelta
Thu 25/410:00 p.m.ONT - LGA
1 stop7h 45mDelta
Deal found 17/4C$ 408
Fri 26/46:00 p.m.LGA - ONT
1 stop7h 57mDelta
Mon 6/510:00 p.m.ONT - LGA
1 stop7h 42mDelta
Deal found 17/4C$ 410
Wed 24/45:35 a.m.SEA - ONT
1 stop6h 37mDelta
Wed 1/51:20 p.m.ONT - SEA
1 stop5h 40mDelta
Deal found 17/4C$ 422
Fri 26/49:26 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Sun 28/46:00 a.m.ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 18/4C$ 424

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 506,061 searches and data was last updated on 18 April 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.
Wed 1/510:00 p.m.LGA - ONT
1 stop12h 47mFrontier
Deal found 17/4C$ 110
Wed 8/53:23 p.m.SEA - ONT
Nonstop2h 39mDelta
Deal found 18/4C$ 123
Mon 27/58:00 p.m.SEA - ONT
1 stop20h 40mFrontier
Deal found 17/4C$ 126
Wed 17/77:00 p.m.PDX - ONT
1 stop4h 43mDelta
Deal found 18/4C$ 135
Tue 7/55:34 p.m.RNO - ONT
1 stop6h 09mDelta
Deal found 16/4C$ 135
Mon 27/56:32 a.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 18/4C$ 149
Mon 13/56:00 a.m.RNO - ONT
1 stop6h 13mDelta
Deal found 17/4C$ 149
Sun 12/59:26 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 18/4C$ 150
Tue 30/46:00 a.m.RNO - ONT
1 stop6h 12mDelta
Deal found 17/4C$ 150

Direct flights to Ontario

Tue 28/51:57 p.m.SEA - ONT
Nonstop2h 44mFrontier
Fri 31/510:24 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 17/4C$ 134
Fri 7/61:57 p.m.SEA - ONT
Nonstop2h 44mFrontier
Sun 9/611:56 a.m.ONT - SEA
Nonstop2h 53mFrontier
Deal found 17/4C$ 182
Sun 25/81:53 p.m.SEA - ONT
Nonstop2h 37mFrontier
Sat 31/810:06 a.m.ONT - SEA
Nonstop2h 47mFrontier
Deal found 17/4C$ 214
Sun 18/81:53 p.m.SEA - ONT
Nonstop2h 37mFrontier
Sun 25/810:06 a.m.ONT - SEA
Nonstop2h 47mFrontier
Deal found 17/4C$ 235
Sat 11/57:25 a.m.SEA - ONT
Nonstop2h 39mDelta
Wed 15/56:50 a.m.ONT - SEA
Nonstop3h 00mDelta
Deal found 17/4C$ 244
Sat 11/57:55 p.m.SEA - ONT
Nonstop2h 43mDelta
Mon 13/56:42 p.m.ONT - SEA
Nonstop3h 02mDelta
Deal found 17/4C$ 272
Thu 9/51:32 p.m.SEA - ONT
Nonstop2h 33mAlaska Airlines
Thu 9/57:59 p.m.ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 17/4C$ 291
Thu 9/57:55 p.m.SEA - ONT
Nonstop2h 43mDelta
Mon 13/56:50 a.m.ONT - SEA
Nonstop3h 00mDelta
Deal found 17/4C$ 299
Thu 29/81:53 p.m.SEA - ONT
Nonstop2h 37mFrontier
Sun 1/910:06 a.m.ONT - SEA
Nonstop2h 47mFrontier
Deal found 17/4C$ 301

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 506,061 searches and data was last updated on 18 April 2024.

Fly from

Any airport

Budget

C$ 134 - C$ 380

Route

Depart

Return

Price

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 28/5

Nonstop2h 44m

Ontario

Fri 31/5

Nonstop2h 53m

C$ 134

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 28/5

1 stop17h 20m

Ontario

Fri 31/5

Nonstop2h 53m

C$ 167

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Fri 7/6

Nonstop2h 44m

Ontario

Sun 9/6

Nonstop2h 53m

C$ 182

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 4/5

1 stop7h 47m

Ontario

Fri 10/5

1 stop14h 17m

C$ 204

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 28/5

1 stop17h 20m

Ontario

Fri 31/5

1 stop9h 06m

C$ 214

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 11/5

Nonstop2h 43m

Ontario

Tue 14/5

Nonstop3h 01m

C$ 244

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Wed 15/5

Nonstop2h 39m

Ontario

Tue 21/5

Nonstop3h 02m

C$ 247

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 11/5

Nonstop2h 33m

Ontario

Mon 13/5

1 stop4h 41m

C$ 284

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 14/5

1 stop9h 44m

Ontario

Tue 4/6

1 stop8h 02m

C$ 380

Flights are sorted by cheapest first

Deals found on 17/4

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$ 136 while a round-trip flight costs C$ 228. Price data was last updated on 14 April 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$ 552). 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$ 418

February

C$ 473

March

C$ 573

April

C$ 454

May

C$ 614

June

C$ 672

July

C$ 625

August

C$ 762

September

C$ 333

October

C$ 523

November

C$ 661

December

C$ 527

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 14 April 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 Saturday mornings, 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 18 April 2024.
Read through reviews of airlines servicing Ontario, such as Alaska Airlines, Air Canada and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,098 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Overall

8.1

Crew

8.6

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

8.1
Very good
9,098 reviews
8.1
Very good
9,098 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Overall

8.1

Crew

8.6

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

8.1
Very good
11,104 reviews
8.1
Very good
9,098 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Overall

8.1

Crew

8.6

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

7.5
Good
3,010 reviews
8.1
Very good
9,098 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Overall

8.1

Crew

8.6

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

7.4
Good
11,346 reviews
8.1
Very good
9,098 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Overall

8.1

Crew

8.6

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

7.3
Good
14,963 reviews
8.1
Very good
9,098 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Overall

8.1

Crew

8.6

Reviews

1 / 10

We paid $161 for two exit row seats thinking there’d be extra leg room and not be cramped! The price we paid was a rip-off for these seats and the plane was extremely narrow and cramped. The male crew were okay but not super-friendly. When we picked up our luggage at baggage claim, someone ripped my luggage with a knife or blunt object and destroyed it!! I will be filling a claim for this and took pictures. I heard great reviews about this airline but am disappointed.

Related info for your journey

  • 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.

  • Can I find cheaper flights to Ontario if I am willing to have layovers?

    Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to Ontario on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ontario?

    Based on reviews from Cheapflights users, WestJet is rated the highest out of the airlines that fly to Ontario.

  • What is the cheapest airport to fly to in Ontario?

    Ontario Airport is currently the cheapest airport to fly to in Ontario. One-way flights to Ontario Airport typically cost C$ 29, while round-trip flights cost around C$ 79.

  • How much is a round-trip flight to Ontario?

    A round-trip flight to Ontario will typically cost around C$ 68, however they can be found for as little as C$ 57.

  • Where does the fastest flight to Ontario depart from?

    For those looking to save time traveling to Ontario, Vancouver offers the quickest one-way flight (5 hours 15 minutes).

  • Does Ontario Airport have rental cars?

    Yes. Those touching down at Ontario Airport can take advantage of the rental car services offered upon their arrival.

  • Are there hotels close to Ontario Airport?

    Yes. Ontario Airport has hotels nearby for those requiring accommodations. Ontario Gateway Hotel is the closest property to Ontario Airport (0.0 km away from Ontario Airport).

See more FAQs

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