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Cheap flights to Ontario from £47

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/4. 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

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

 
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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 953,168 searches and data was last updated on 28 March 2024.

Popular in

July

Cheapest in

February

Average price

£435

Return from

£323

One-way from

£320
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 953,168 searches and data was last updated on 28 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.
Fri 26/410:15SFO - ONT
Nonstop1h 29mFrontier
Fri 3/507:58ONT - SFO
Nonstop1h 27mFrontier
Deal found 27/3£90
Sat 27/407:55SEA - ONT
Nonstop2h 45mDelta
Wed 1/517:40ONT - SEA
Nonstop2h 53mDelta
Deal found 27/3£116
Wed 24/410:30SEA - ONT
Nonstop2h 42mDelta
Sat 27/417:40ONT - SEA
Nonstop2h 53mDelta
Deal found 28/3£124
Fri 26/423:59SFO - ONT
1 stop13h 22mFrontier
Fri 3/507:58ONT - SFO
Nonstop1h 27mFrontier
Deal found 27/3£130
Sat 27/418:55SEA - ONT
Nonstop2h 33mAlaska Airlines
Tue 30/407:00ONT - SEA
1 stop4h 41mAlaska Airlines
Deal found 26/3£131
Tue 9/417:07PHX - ONT
1 stop4h 11mFrontier
Mon 22/400:59ONT - PHX
1 stop9h 44mFrontier
Deal found 27/3£131
Wed 17/407:00SEA - ONT
Nonstop2h 33mAlaska Airlines
Wed 24/406:00ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 27/3£132
Fri 26/412:23SFO - ONT
2 stops9h 06mFrontier
Fri 3/507:58ONT - SFO
Nonstop1h 27mFrontier
Deal found 27/3£134
Tue 9/422:01PHX - ONT
1 stop8h 25mFrontier
Tue 23/407:53ONT - PHX
2 stops10h 26mFrontier
Deal found 27/3£135

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 953,168 searches and data were last updated on 28 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.
Tue 9/413:45PHX - ONT
Nonstop1h 21mFrontier
Tue 23/412:39ONT - PHX
1 stop9h 41mFrontier
Deal found 27/3£80
Tue 9/413:45PHX - ONT
Nonstop1h 21mFrontier
Tue 23/407:53ONT - PHX
2 stops10h 26mFrontier
Deal found 27/3£84
Fri 26/410:15SFO - ONT
Nonstop1h 29mFrontier
Fri 3/507:58ONT - SFO
Nonstop1h 27mFrontier
Deal found 27/3£90
Sat 27/407:55SEA - ONT
Nonstop2h 45mDelta
Wed 1/517:40ONT - SEA
Nonstop2h 53mDelta
Deal found 27/3£116
Wed 24/407:55SEA - ONT
Nonstop2h 45mDelta
Wed 1/517:40ONT - SEA
Nonstop2h 53mDelta
Deal found 28/3£124
Mon 10/610:02SFO - ONT
1 stop5h 53mFrontier
Tue 11/607:36ONT - SFO
Nonstop1h 26mFrontier
Deal found 28/3£125
Sat 4/507:55SEA - ONT
Nonstop2h 44mDelta
Tue 14/506:50ONT - SEA
Nonstop3h 00mDelta
Deal found 27/3£128
Fri 26/423:59SFO - ONT
1 stop13h 22mFrontier
Fri 3/507:58ONT - SFO
Nonstop1h 27mFrontier
Deal found 27/3£130
Sun 9/600:58SFO - ONT
1 stop15h 39mFrontier
Tue 11/607:36ONT - SFO
Nonstop1h 26mFrontier
Deal found 28/3£131

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 953,168 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. Make sure to double check the price, time, and destination to confirm all are correct.
Fri 5/415:04SFO - ONT
Nonstop1h 28mFrontier
Sun 7/408:35ONT - SFO
Nonstop1h 33mFrontier
Deal found 28/3£173
Thu 4/414:55SEA - ONT
1 stop6h 57mAlaska Airlines
Wed 17/406:00ONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 27/3£195
Fri 5/414:52ORD - ONT
1 stop9h 57mDelta
Fri 12/422:00ONT - ORD
1 stop8h 19mDelta
Deal found 26/3£198
Thu 4/412:28ORD - ONT
2 stops12h 21mDelta
Tue 9/417:19ONT - ORD
1 stop5h 40mDelta
Deal found 26/3£202
Thu 4/412:28ORD - ONT
2 stops12h 21mDelta
Tue 9/405:45ONT - ORD
2 stops13h 36mDelta
Deal found 26/3£206
Fri 5/415:04SFO - ONT
Nonstop1h 28mFrontier
Sun 7/417:42ONT - SFO
1 stop17h 05mFrontier
Deal found 28/3£211
Wed 3/421:30SFO - ONT
Nonstop1h 34mUnited Airlines
Sun 7/406:00ONT - SFO
Nonstop1h 29mUnited Airlines
Deal found 27/3£221
Wed 3/406:47SEA - ONT
Nonstop2h 38mAlaska Airlines
Wed 10/406:00ONT - SEA
Nonstop2h 50mAlaska Airlines
Deal found 27/3£227
Wed 3/406:47SEA - ONT
Nonstop2h 38mAlaska Airlines
Wed 10/406:30ONT - SEA
1 stop3h 52mAlaska Airlines
Deal found 27/3£234

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 953,168 searches and data was last updated on 28 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.
Sat 27/407:55SEA - ONT
Nonstop2h 45mDelta
Deal found 27/3£59
Wed 17/407:55SEA - ONT
Nonstop2h 45mDelta
Deal found 26/3£67
Wed 8/507:00SEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 26/3£70
Sun 8/905:15SFO - ONT
Nonstop1h 21mFrontier
Deal found 27/3£82
Fri 26/416:31SEA - ONT
Nonstop2h 33mAlaska Airlines
Deal found 27/3£86
Fri 26/417:05SFO - ONT
1 stop5h 55mSouthwest
Deal found 27/3£90
Mon 27/521:26SEA - ONT
Nonstop2h 32mAlaska Airlines
Deal found 27/3£94
Thu 25/412:34FLL - ONT
1 stop12h 42mJetBlue
Deal found 28/3£94
Sat 27/405:00FSD - ONT
2 stops10h 12mDelta
Deal found 27/3£97

Direct flights to Ontario

Tue 9/413:45PHX - ONT
Nonstop1h 21mFrontier
Tue 23/420:48ONT - PHX
Nonstop1h 20mFrontier
Deal found 27/3£47
Mon 10/605:15SFO - ONT
Nonstop1h 21mFrontier
Tue 11/607:36ONT - SFO
Nonstop1h 26mFrontier
Deal found 28/3£54
Wed 4/905:15SFO - ONT
Nonstop1h 21mFrontier
Fri 6/907:36ONT - SFO
Nonstop1h 26mFrontier
Deal found 27/3£63
Fri 26/410:15SFO - ONT
Nonstop1h 29mFrontier
Fri 3/507:58ONT - SFO
Nonstop1h 27mFrontier
Deal found 27/3£90
Sat 27/407:55SEA - ONT
Nonstop2h 45mDelta
Wed 1/517:40ONT - SEA
Nonstop2h 53mDelta
Deal found 27/3£116
Wed 24/407:55SEA - ONT
Nonstop2h 45mDelta
Wed 1/517:40ONT - SEA
Nonstop2h 53mDelta
Deal found 28/3£124
Sat 4/507:55SEA - ONT
Nonstop2h 44mDelta
Tue 14/506:50ONT - SEA
Nonstop3h 00mDelta
Deal found 27/3£128
Wed 17/410:30SEA - ONT
Nonstop2h 42mDelta
Thu 25/411:20ONT - SEA
Nonstop2h 59mDelta
Deal found 27/3£132
Mon 6/519:59SEA - ONT
Nonstop2h 40mDelta
Tue 7/511:20ONT - SEA
Nonstop3h 01mDelta
Deal found 27/3£136

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 953,168 searches and data was last updated on 28 March 2024.

Fly from

Any airport

Budget

£80 - £217

Route

Depart

Return

Price

Phoenix Sky Harbor IntlOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 9/4

Nonstop1h 21m

Ontario

Tue 23/4

1 stop9h 41m

£80

Phoenix Sky Harbor IntlOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 9/4

Nonstop1h 21m

Ontario

Tue 23/4

2 stops10h 26m

£84

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Fri 26/4

Nonstop1h 29m

Ontario

Fri 3/5

Nonstop1h 27m

£90

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 30/4

Nonstop2h 33m

Ontario

Thu 2/5

Nonstop2h 45m

£116

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Tue 23/4

Nonstop2h 45m

Ontario

Sat 27/4

Nonstop2h 53m

£124

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

Sat 4/5

Nonstop2h 44m

Ontario

Tue 14/5

Nonstop3h 00m

£128

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Mon 29/4

Nonstop1h 37m

Ontario

Thu 2/5

Nonstop1h 29m

£154

San FranciscoOntario

SFO - ONT

SFOONT

San Francisco

Mon 29/4

1 stop4h 55m

Ontario

Thu 2/5

1 stop5h 20m

£188

Fort LauderdaleOntario

FLL - ONT

FLLONT

Fort Lauderdale

Wed 8/5

1 stop9h 54m

Ontario

Tue 14/5

1 stop11h 38m

£217

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 £82 while a return flight costs £131. Price data was last updated on 24 March 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 24 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 28 March 2024.
Read reviews from past customers who have flown Finnair, American Airlines and United Airlines to Ontario. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very Good
11,402 reviews

Comfort

7.9

Overall

8.1

Food

7.5

Entertainment

8.0

Boarding

8.2

Crew

8.6

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
11,402 reviews
8.1
Very Good
11,402 reviews

Comfort

7.9

Overall

8.1

Food

7.5

Entertainment

8.0

Boarding

8.2

Crew

8.6

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
1,684 reviews
8.1
Very Good
11,402 reviews

Comfort

7.9

Overall

8.1

Food

7.5

Entertainment

8.0

Boarding

8.2

Crew

8.6

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
1,379 reviews
8.1
Very Good
11,402 reviews

Comfort

7.9

Overall

8.1

Food

7.5

Entertainment

8.0

Boarding

8.2

Crew

8.6

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
4,840 reviews
8.1
Very Good
11,402 reviews

Comfort

7.9

Overall

8.1

Food

7.5

Entertainment

8.0

Boarding

8.2

Crew

8.6

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
755 reviews
8.1
Very Good
11,402 reviews

Comfort

7.9

Overall

8.1

Food

7.5

Entertainment

8.0

Boarding

8.2

Crew

8.6

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.

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