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Cheap flights to Ontario from £51

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/5. 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.
BOS — ONT
22 Apr — 29 Apr1
1 adult
Mon 22/4
Mon 29/4

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 895,763 searches and data was last updated on 17 April 2024.

Popular in

July

Cheapest in

February

Average price

£454

Return from

£268

One-way from

£518
High demand for flights, 19% potential price rise
Best time to find cheap flights, 3% potential price drop
Average for return flights in April 2024
From London to Los Angeles
One-way flight from London 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 895,763 searches and data was last updated on 17 April 2024.
These are some of the cheapest-priced fares users can find on flights departing to Ontario in April and May 2024. Be sure to check back soon as deals update often.
Tue 7/500:58SFO - ONT
1 stop23h 01mFrontier
Fri 10/507:58ONT - SFO
Nonstop1h 27mFrontier
Deal found 17/4£114
Fri 17/505:15SFO - ONT
Nonstop1h 24mFrontier
Sat 25/517:41ONT - SFO
1 stop4h 26mFrontier
Deal found 17/4£127
Thu 25/412:45ORD - ONT
1 stop11h 24mFrontier
Tue 30/420:48ONT - ORD
1 stop12h 41mFrontier
Deal found 16/4£128
Tue 7/500:58SFO - ONT
1 stop23h 01mFrontier
Fri 10/518:55ONT - SFO
1 stop16h 28mFrontier
Deal found 17/4£131
Mon 6/507:00SEA - ONT
Nonstop2h 33mAlaska Airlines
Wed 15/517:00ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 15/4£137
Wed 8/510:15SFO - ONT
Nonstop1h 29mFrontier
Thu 9/500:56ONT - SFO
1 stop23h 02mFrontier
Deal found 17/4£137
Sat 11/518:55SEA - ONT
Nonstop2h 33mAlaska Airlines
Tue 14/517:00ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 17/4£142
Mon 6/516:31SEA - ONT
Nonstop2h 33mAlaska Airlines
Wed 15/507:00ONT - SEA
1 stop4h 41mAlaska Airlines
Deal found 15/4£145
Tue 14/518:55SEA - ONT
Nonstop2h 33mAlaska Airlines
Wed 15/507:00ONT - SEA
1 stop4h 41mAlaska Airlines
Deal found 16/4£149

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 895,763 searches and data were last updated on 17 April 2024.
Check out some of the best flight deals to Ontario in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Wed 8/516:19SFO - ONT
1 stop5h 38mFrontier
Fri 10/522:29ONT - SFO
2 stops12h 54mFrontier
Deal found 17/4£88
Wed 8/514:40SFO - ONT
2 stops7h 20mFrontier
Fri 10/522:29ONT - SFO
2 stops12h 54mFrontier
Deal found 17/4£92
Tue 7/500:58SFO - ONT
1 stop23h 01mFrontier
Fri 10/507:58ONT - SFO
Nonstop1h 27mFrontier
Deal found 17/4£114
Fri 17/505:15SFO - ONT
Nonstop1h 24mFrontier
Sat 25/517:41ONT - SFO
1 stop4h 26mFrontier
Deal found 17/4£127
Thu 25/412:45ORD - ONT
1 stop11h 24mFrontier
Tue 30/420:48ONT - ORD
1 stop12h 41mFrontier
Deal found 16/4£128
Tue 7/500:58SFO - ONT
1 stop23h 01mFrontier
Fri 10/518:55ONT - SFO
1 stop16h 28mFrontier
Deal found 17/4£131
Mon 6/507:00SEA - ONT
Nonstop2h 33mAlaska Airlines
Wed 15/517:00ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 15/4£137
Wed 8/510:15SFO - ONT
Nonstop1h 29mFrontier
Thu 9/500:56ONT - SFO
1 stop23h 02mFrontier
Deal found 17/4£137
Sat 11/518:55SEA - ONT
Nonstop2h 33mAlaska Airlines
Tue 14/517:00ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 17/4£142

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 895,763 searches and data was last updated on 17 April 2024.
Have a look at some of the best last-minute flights available departing to Ontario. Make sure to double check the price, time, and destination to confirm all are correct.
Thu 25/412:45ORD - ONT
1 stop11h 24mFrontier
Tue 30/420:48ONT - ORD
1 stop12h 41mFrontier
Deal found 16/4£128
Thu 25/418:27ORD - ONT
1 stop7h 29mFrontier
Mon 29/400:59ONT - ORD
1 stop21h 57mFrontier
Deal found 16/4£160
Fri 26/421:26SEA - ONT
Nonstop2h 33mAlaska Airlines
Fri 31/520:09ONT - SEA
Nonstop2h 41mAlaska Airlines
Deal found 15/4£210
Fri 26/419:50ORD - ONT
1 stop6h 09mDelta
Tue 7/513:20ONT - ORD
1 stop6h 12mDelta
Deal found 16/4£218
Thu 25/413:32SEA - ONT
Nonstop2h 33mAlaska Airlines
Mon 6/519:59ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 16/4£231
Thu 25/407:00SEA - ONT
Nonstop2h 33mAlaska Airlines
Tue 30/407:00ONT - SEA
1 stop4h 41mAlaska Airlines
Deal found 16/4£238
Wed 24/405:35SEA - ONT
1 stop6h 37mDelta
Wed 1/513:20ONT - SEA
1 stop5h 40mDelta
Deal found 17/4£246
Fri 26/413:13SEA - ONT
Nonstop2h 33mAlaska Airlines
Mon 29/406:00ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 16/4£247
Sat 27/418:55SEA - ONT
Nonstop2h 33mAlaska Airlines
Tue 7/517:00ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 16/4£251

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 895,763 searches and data was last updated on 17 April 2024.
Consider booking one of these one-way flights heading to Ontario. Users can also find round-trip Ontario flights by using the search form above.
Thu 9/514:40SFO - ONT
2 stops7h 29mFrontier
Deal found 17/4£64
Thu 25/422:04SEA - ONT
1 stop8h 22mFrontier
Deal found 17/4£67
Wed 29/520:25SEA - ONT
1 stop12h 15mFrontier
Deal found 16/4£68
Wed 8/500:58SFO - ONT
1 stop22h 58mFrontier
Deal found 17/4£68
Tue 14/513:32SEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 17/4£71
Thu 25/422:04SEA - ONT
1 stop8h 22mFrontier
Deal found 16/4£72
Sat 27/423:59SFO - ONT
1 stop9h 30mFrontier
Deal found 15/4£72
Sat 25/517:40OAK - ONT
Nonstop1h 20mSouthwest
Deal found 17/4£81
Sun 28/421:35SFO - ONT
1 stop9h 28mFrontier
Deal found 16/4£84

Direct flights to Ontario

Wed 8/510:15SFO - ONT
Nonstop1h 29mFrontier
Fri 10/507:58ONT - SFO
Nonstop1h 27mFrontier
Deal found 17/4£51
Fri 17/505:15SFO - ONT
Nonstop1h 24mFrontier
Sat 25/507:39ONT - SFO
Nonstop1h 28mFrontier
Deal found 17/4£59
Mon 6/507:00SEA - ONT
Nonstop2h 33mAlaska Airlines
Wed 15/517:00ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 15/4£137
Sat 11/518:55SEA - ONT
Nonstop2h 33mAlaska Airlines
Tue 14/517:00ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 17/4£142
Sat 11/507:25SEA - ONT
Nonstop2h 39mDelta
Mon 13/518:42ONT - SEA
Nonstop3h 02mDelta
Deal found 17/4£158
Thu 9/513:32SEA - ONT
Nonstop2h 33mAlaska Airlines
Thu 9/519:59ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 16/4£169
Thu 9/507:25SEA - ONT
Nonstop2h 39mDelta
Mon 13/518:42ONT - SEA
Nonstop3h 02mDelta
Deal found 17/4£174
Tue 30/419:59SEA - ONT
Nonstop2h 41mDelta
Tue 7/514:13ONT - SEA
Nonstop2h 57mDelta
Deal found 16/4£178
Thu 16/516:42SEA - ONT
Nonstop2h 32mAlaska Airlines
Thu 23/510:00ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 16/4£182

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 895,763 searches and data was last updated on 17 April 2024.

Fly from

Any airport

Budget

£88 - £273

Route

Depart

Return

Price

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Wed 8/5

1 stop5h 38m

Ontario

Fri 10/5

2 stops12h 54m

£88

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Wed 8/5

2 stops7h 20m

Ontario

Fri 10/5

2 stops12h 54m

£92

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Tue 7/5

1 stop23h 01m

Ontario

Fri 10/5

Nonstop1h 27m

£114

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Mon 6/5

Nonstop2h 33m

Ontario

Wed 15/5

Nonstop2h 38m

£137

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 11/5

Nonstop2h 33m

Ontario

Tue 14/5

Nonstop2h 38m

£142

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 11/5

Nonstop2h 39m

Ontario

Mon 13/5

Nonstop3h 00m

£158

Phoenix Sky Harbor IntlOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 2/5

Nonstop1h 05m

Ontario

Thu 2/5

Nonstop1h 05m

£199

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Mon 29/4

Nonstop1h 34m

Ontario

Sun 5/5

Nonstop1h 28m

£200

Fort LauderdaleOntario

FLL - ONT

FLLONT

Fort Lauderdale

Fri 17/5

1 stop9h 54m

Ontario

Mon 20/5

1 stop9h 53m

£273

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 £72 while a return flight costs £156. Price data was last updated on 14 April 2024.

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 return flight to Ontario. Price data was last updated on 28 January 2024.
The price you pay for your flight to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 36 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

When is the cheapest time to fly to Ontario?

Use this chart to determine the cheapest time to fly return to Ontario. Price data was last updated on 14 April 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Users looking for the lowest fares to Ontario should consider flying on Wednesday mornings, when prices are typically cheapest. Budget-minded travellers will want to avoid Tuesday at midday, 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 17 April 2024.
Read reviews from past customers who have flown United Airlines, American Airlines and British Airways to Ontario. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very Good
11,136 reviews

Crew

8.6

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

8.1
Very Good
11,136 reviews
8.1
Very Good
11,136 reviews

Crew

8.6

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

7.9
Good
1,643 reviews
8.1
Very Good
11,136 reviews

Crew

8.6

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

7.8
Good
1,388 reviews
8.1
Very Good
11,136 reviews

Crew

8.6

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

7.7
Good
749 reviews
8.1
Very Good
11,136 reviews

Crew

8.6

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

7.7
Good
4,678 reviews
8.1
Very Good
11,136 reviews

Crew

8.6

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

Ontario airport overview

At just 3.7km (2.3 miles) east of downtown Ontario, Ontario International Airport  is a small but well-equipped alternative to Los Angeles Airport and John Wayne Airport for passengers flying to California.

The number of flights to Ontario International Airport has been declining steadily in recent years (there were 4.8 million passengers in 2010, but the terminals are built to handle twice that) – some say due to the lack of direct flights to major destinations, in comparison with other airports nearby. However, those who use the airport agree that it is a convenient alternative, well connected to nearby air fields and towns, easy to get in and out of, clean and with good basic facilities.

Related info for your journey

  • What does ONT mean?

    This is defined as Ontario Airport (ONT). Codes like ONT are often used to just call airports uniquely.

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

    If you book a flight to Ontario, you will be flying into Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

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

    Yes, flights with stopovers 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, Virgin Atlantic is rated the highest out of the airlines that fly to Ontario.

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

    null is currently the cheapest airport to fly to in Ontario. One-way flights to null typically cost null, while return flights cost around null.

  • Where does the fastest flight to Ontario depart from?

    For those looking to save time traveling to Ontario, London offers the quickest one-way flight (13 hours 22 minutes).

  • Which airport is closest to Venice Beach?

    If being close to Ontario is important to you, you’ll want to land at Los Angeles Airport.

  • Does Ontario Airport have car hire?

    Yes. Those touching down at Ontario Airport can take advantage of the car hire 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 mi away from Ontario Airport).

See more FAQs

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