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Cheap flights to Ontario from £54

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 21/4. 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
24 Mar — 31 Mar1
1 adult
Sun 24/3
Sun 31/3

Find deals on flights to Ontario by searching across hundreds of travel sites at once.

 
Cheapflights users frequently choose these airlines when searching for flights to Ontario, based on our search results.
Cheapflights users frequently choose these airlines when searching for flights to Ontario, based on our search results.
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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 905,048 searches and data was last updated on 19 March 2024.

Popular in

July

Cheapest in

February

Average price

£431

Return from

£293

One-way from

£470
High demand for flights, 19% potential price rise
Best time to find cheap flights, 3% potential price drop
Average for return flights in March 2024
From London to Los Angeles
One-way flight from London 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 905,048 searches and data was last updated on 19 March 2024.
These are some of the cheapest-priced fares users can find on flights departing to Ontario in March and April 2024. Be sure to check back soon as deals update often.
Wed 17/410:30SEA - ONT
Nonstop2h 42mDelta
Wed 24/414:00ONT - SEA
Nonstop2h 55mDelta
Deal found 19/3£108
Thu 28/311:03SFO - ONT
Nonstop1h 27mFrontier
Sat 30/312:55ONT - SFO
Nonstop1h 30mFrontier
Deal found 18/3£111
Wed 10/407:55SEA - ONT
Nonstop2h 45mDelta
Thu 2/514:00ONT - SEA
Nonstop2h 55mDelta
Deal found 18/3£115
Wed 10/407:55SEA - ONT
Nonstop2h 45mDelta
Tue 30/407:00ONT - SEA
Nonstop2h 55mDelta
Deal found 18/3£123
Fri 19/421:26SEA - ONT
Nonstop2h 33mAlaska Airlines
Sun 21/406:00ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 19/3£135
Sat 13/416:03SEA - ONT
1 stop5h 49mAlaska Airlines
Thu 18/419:59ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 18/3£138
Sat 13/406:47SEA - ONT
Nonstop2h 38mAlaska Airlines
Fri 19/410:29ONT - SEA
Nonstop2h 46mAlaska Airlines
Deal found 18/3£139
Mon 8/421:25SEA - ONT
Nonstop2h 34mAlaska Airlines
Thu 2/519:59ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 18/3£143
Fri 12/421:25SEA - ONT
Nonstop2h 34mAlaska Airlines
Wed 17/407:00ONT - SEA
1 stop4h 41mAlaska Airlines
Deal found 18/3£146

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 905,048 searches and data were last updated on 19 March 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 17/410:30SEA - ONT
Nonstop2h 42mDelta
Wed 24/414:00ONT - SEA
Nonstop2h 55mDelta
Deal found 19/3£108
Thu 28/311:03SFO - ONT
Nonstop1h 27mFrontier
Sat 30/312:55ONT - SFO
Nonstop1h 30mFrontier
Deal found 18/3£111
Wed 10/406:47SEA - ONT
Nonstop2h 38mAlaska Airlines
Fri 3/516:41ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 18/3£115
Wed 10/407:55SEA - ONT
Nonstop2h 45mDelta
Tue 30/407:00ONT - SEA
Nonstop2h 55mDelta
Deal found 18/3£123
Sat 22/612:24SFO - ONT
1 stop5h 42mFrontier
Tue 25/607:36ONT - SFO
Nonstop1h 26mFrontier
Deal found 18/3£130
Fri 19/421:26SEA - ONT
Nonstop2h 33mAlaska Airlines
Sun 21/406:00ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 19/3£135
Sat 13/412:25SEA - ONT
1 stop6h 02mAlaska Airlines
Wed 17/406:00ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 18/3£138
Sat 13/406:47SEA - ONT
Nonstop2h 38mAlaska Airlines
Fri 19/410:29ONT - SEA
Nonstop2h 46mAlaska Airlines
Deal found 18/3£139
Mon 8/421:25SEA - ONT
Nonstop2h 34mAlaska Airlines
Thu 2/519:59ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 18/3£143

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 905,048 searches and data was last updated on 19 March 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 28/311:03SFO - ONT
Nonstop1h 27mFrontier
Sat 30/312:55ONT - SFO
Nonstop1h 30mFrontier
Deal found 18/3£111
Thu 28/311:03SFO - ONT
Nonstop1h 27mFrontier
Sat 30/321:37ONT - SFO
1 stop9h 09mFrontier
Deal found 18/3£159
Thu 28/311:03SFO - ONT
Nonstop1h 27mFrontier
Fri 29/300:59ONT - SFO
1 stop17h 06mFrontier
Deal found 18/3£175
Wed 27/306:40SFO - ONT
1 stop4h 10mSouthwest
Wed 27/315:50ONT - SFO
1 stop6h 40mSouthwest
Deal found 18/3£207
Mon 25/319:50SEA - ONT
Nonstop2h 27mDelta
Wed 3/406:00ONT - SEA
Nonstop2h 47mDelta
Deal found 18/3£218
Fri 29/319:12SEA - ONT
1 stop4h 34mDelta
Mon 1/406:00ONT - SEA
Nonstop2h 47mDelta
Deal found 18/3£225
Fri 29/317:09SEA - ONT
1 stop6h 37mDelta
Mon 1/417:01ONT - SEA
1 stop7h 06mDelta
Deal found 18/3£232
Mon 25/313:59SEA - ONT
Nonstop2h 38mAlaska Airlines
Wed 27/310:39ONT - SEA
Nonstop2h 52mAlaska Airlines
Deal found 18/3£233
Wed 27/308:25SFO - ONT
Nonstop1h 34mUnited Airlines
Wed 27/318:22ONT - SFO
Nonstop1h 36mUnited Airlines
Deal found 18/3£236

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 905,048 searches and data was last updated on 19 March 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.
Sun 21/407:55SEA - ONT
Nonstop2h 45mDelta
Deal found 18/3£54
Mon 25/321:55SEA - ONT
1 stop23h 23mFrontier
Deal found 17/3£58
Sun 14/407:55SEA - ONT
Nonstop2h 45mDelta
Deal found 18/3£62
Sat 3/813:53SEA - ONT
Nonstop2h 37mFrontier
Deal found 17/3£71
Fri 2/813:53SEA - ONT
Nonstop2h 37mFrontier
Deal found 17/3£74
Tue 28/519:30ORD - ONT
1 stop15h 36mFrontier
Deal found 18/3£75
Wed 8/518:55SEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 16/3£77
Wed 8/519:55SEA - ONT
Nonstop2h 38mDelta
Deal found 18/3£78
Thu 18/421:26SEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 18/3£82

Direct flights to Ontario

Sat 22/605:15SFO - ONT
Nonstop1h 21mFrontier
Tue 25/607:36ONT - SFO
Nonstop1h 26mFrontier
Deal found 18/3£64
Wed 17/410:30SEA - ONT
Nonstop2h 42mDelta
Wed 24/414:00ONT - SEA
Nonstop2h 55mDelta
Deal found 19/3£108
Wed 10/406:47SEA - ONT
Nonstop2h 38mAlaska Airlines
Fri 3/516:41ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 18/3£115
Wed 10/407:55SEA - ONT
Nonstop2h 45mDelta
Tue 30/407:00ONT - SEA
Nonstop2h 55mDelta
Deal found 18/3£123
Fri 19/421:26SEA - ONT
Nonstop2h 33mAlaska Airlines
Sun 21/406:00ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 19/3£135
Sat 13/406:47SEA - ONT
Nonstop2h 38mAlaska Airlines
Fri 19/410:29ONT - SEA
Nonstop2h 46mAlaska Airlines
Deal found 18/3£139
Mon 8/421:25SEA - ONT
Nonstop2h 34mAlaska Airlines
Thu 2/519:59ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 18/3£143
Wed 10/416:31SEA - ONT
Nonstop2h 33mAlaska Airlines
Wed 17/417:00ONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 19/3£147
Tue 9/406:47SEA - ONT
Nonstop2h 38mAlaska Airlines
Mon 15/406:00ONT - SEA
Nonstop2h 50mAlaska Airlines
Deal found 18/3£151

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 905,048 searches and data was last updated on 19 March 2024.

Fly from

Any airport

Budget

£97 - £271

Route

Depart

Return

Price

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Tue 9/4

Nonstop1h 28m

Ontario

Mon 15/4

1 stop17h 02m

£97

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Wed 17/4

Nonstop2h 45m

Ontario

Sat 20/4

Nonstop2h 53m

£108

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Thu 28/3

Nonstop1h 27m

Ontario

Sat 30/3

Nonstop1h 30m

£111

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Wed 10/4

Nonstop2h 38m

Ontario

Fri 19/4

Nonstop2h 46m

£115

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Fri 26/4

Nonstop2h 45m

Ontario

Sat 4/5

Nonstop2h 53m

£123

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Sat 22/6

1 stop5h 42m

Ontario

Tue 25/6

Nonstop1h 26m

£130

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Wed 1/5

Nonstop2h 42m

Ontario

Tue 7/5

Nonstop2h 47m

£131

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Fri 19/4

Nonstop2h 33m

Ontario

Sat 20/4

Nonstop2h 45m

£135

Fort LauderdaleOntario

FLL - ONT

FLLONT

Fort Lauderdale

Fri 12/4

1 stop12h 42m

Ontario

Sun 14/4

1 stop11h 27m

£271

Flights are sorted by cheapest first

Deals found on 17/3

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 £70 while a return flight costs £136. Price data was last updated on 17 March 2024.

Currently, January is the cheapest month in which you can book a flight to Ontario (average of £0). Flying to Ontario in August will prove the most costly (average of £935). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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 17 March 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 Monday 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 19 March 2024.
Read reviews from past customers who have flown Virgin Atlantic, KLM 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
11,551 reviews

Food

7.5

Entertainment

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

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
11,551 reviews
8.1
Very Good
11,551 reviews

Food

7.5

Entertainment

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

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
1,720 reviews
8.1
Very Good
11,551 reviews

Food

7.5

Entertainment

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

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
1,376 reviews
8.1
Very Good
11,551 reviews

Food

7.5

Entertainment

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

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
4,921 reviews
8.1
Very Good
11,551 reviews

Food

7.5

Entertainment

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

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
762 reviews
8.1
Very Good
11,551 reviews

Food

7.5

Entertainment

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Overall

8.1

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.

  • 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.

Browse thousands of different options on Cheapflights for your next trip

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Find flights to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario.

Can Cheapflights find flights to Ontario with no change fees?

Yes, we can. To see specific flights to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Ontario flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.