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₹ 8,488+ Cheap flights from Ontario

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/9. 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.
ONT — DEL
23 Aug — 30 Aug1
1 adult

What to know about flights from Ontario

Discover essential information about flights departing from Ontario, including flight schedules, destinations, airlines operating at the Ontario airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 18 August 2025.

Cheapest one-way flight

₹ 8,649

Cheapest round-trip flight

₹ 45,122

Cheapest airline

Frontier

Most popular destination

New York John F Kennedy Intl (JFK)

Good round-trip deal

₹ 9,220 or less
The cheapest one-way flight from Ontario is currently to New York John F Kennedy Intl.
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The cheapest round-trip flight from Ontario is currently to London Heathrow.
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On average, Frontier currently has the cheapest one-way flight from Ontario (avg. price of ₹ 7,271).
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New York John F Kennedy Intl (JFK) is currently the most popular flight destination from Ontario (average return price of ₹ 15,599).
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Price to beat on a round-trip flight from Ontario.
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Find flights from Ontario

Cheapest flights from Ontario
Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 18 August 2025.

Thu 2/1008:13ONT - SEA
Nonstop2h 58mFrontier
Mon 6/1012:30SEA - ONT
Nonstop2h 48mFrontier
Deal found 16/8₹ 12,601
Sat 13/917:40ONT - SEA
Nonstop2h 51mDelta
Sat 20/919:50SEA - ONT
Nonstop2h 50mDelta
Deal found 18/8₹ 15,489
Sat 27/915:06ONT - SEA
Nonstop2h 40mAlaska Airlines
Mon 29/907:55SEA - ONT
Nonstop2h 49mAlaska Airlines
Deal found 17/8₹ 16,364
Sat 20/911:50ONT - SEA
Nonstop2h 55mDelta
Sun 21/908:15SEA - ONT
Nonstop2h 54mDelta
Deal found 16/8₹ 16,452
Fri 26/919:40ONT - SEA
Nonstop2h 50mHawaiian Airlines
Mon 29/907:55SEA - ONT
Nonstop2h 49mHawaiian Airlines
Deal found 17/8₹ 17,239
Tue 16/914:45ONT - SEA
1 stop8h 25mSouthwest
Tue 23/911:10SEA - ONT
2 stops6h 20mSouthwest
Deal found 17/8₹ 17,677
Mon 15/907:10ONT - SEA
1 stop7h 16mAlaska Airlines
Tue 23/905:20SEA - ONT
1 stop4h 06mAlaska Airlines
Deal found 17/8₹ 18,027
Sat 13/907:10ONT - SEA
1 stop7h 16mAlaska Airlines
Sat 20/907:55SEA - ONT
Nonstop2h 49mAlaska Airlines
Deal found 18/8₹ 18,114
Sat 8/1106:00ONT - SEA
Nonstop2h 50mAlaska Airlines
Sat 8/1112:40SEA - ONT
Nonstop2h 37mAlaska Airlines
Deal found 18/8₹ 18,465
Fri 3/1017:55ONT - SEA
1 stop6h 00mSouthwest
Tue 7/1009:15SEA - ONT
2 stops6h 20mSouthwest
Deal found 17/8₹ 18,552
Tue 16/907:10ONT - SEA
1 stop7h 16mAlaska Airlines
Mon 22/905:20SEA - ONT
1 stop4h 06mAlaska Airlines
Deal found 17/8₹ 18,902
Wed 1/1022:56ONT - JFK
Nonstop5h 22mJetBlue
Tue 7/1018:35JFK - ONT
Nonstop5h 54mJetBlue
Deal found 16/8₹ 21,615

Find flights from Ontario within your budget

 
Find flights departing from Ontario that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 18 August 2025. In the last 7 days, Cheapflights users made a total of 454,620 searches

Fly to

New Delhi

Route

Depart

Return

Price

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 2/10

08:13-11:11

Nonstop2h 58m

Seattle/Tacoma Intl

Mon 6/10

12:30-15:18

Nonstop2h 48m

₹ 12,601

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 20/9

15:06-17:46

Nonstop2h 40m

Seattle/Tacoma Intl

Wed 24/9

15:55-18:47

Nonstop2h 52m

₹ 15,489

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 24/9

11:50-14:45

Nonstop2h 55m

Seattle/Tacoma Intl

Sat 27/9

08:15-11:09

Nonstop2h 54m

₹ 15,489

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 13/9

15:06-17:46

Nonstop2h 40m

Seattle/Tacoma Intl

Sat 20/9

07:55-10:44

Nonstop2h 49m

₹ 15,489

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 13/9

17:40-20:31

Nonstop2h 51m

Seattle/Tacoma Intl

Sat 20/9

08:15-11:09

Nonstop2h 54m

₹ 15,489

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 7/10

06:00-08:45

Nonstop2h 45m

Seattle/Tacoma Intl

Sat 11/10

21:25-00:03

Nonstop2h 38m

₹ 15,489

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 8/10

13:31-16:14

Nonstop2h 43m

Seattle/Tacoma Intl

Sat 11/10

21:25-00:03

Nonstop2h 38m

₹ 15,489

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 18/10

13:31-16:14

Nonstop2h 43m

Seattle/Tacoma Intl

Wed 22/10

09:51-12:37

Nonstop2h 46m

₹ 15,489

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Tue 30/9

22:56-07:18

Nonstop5h 22m

New York John F Kennedy Intl

Wed 8/10

18:35-21:29

Nonstop5h 54m

₹ 21,615

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Tue 7/10

22:56-07:18

Nonstop5h 22m

New York John F Kennedy Intl

Tue 21/10

18:35-21:29

Nonstop5h 54m

₹ 21,615

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 60 results
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Best time to book a flight from Ontario

Have a flexible travel schedule? Discover the best time to fly from Ontario with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ontario

Get recent, data-driven insights about flights from Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ontario?

Currently, August is the cheapest month in which you can book a flight from Ontario (average of ₹ 57,581). Flying from Ontario in March will prove the most costly (average of ₹ 70,008). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

What are popular destinations to fly to from Ontario?

Ontario offers frequent flights to Dallas (126 flights per day), Seattle (112 flights per day) and Atlanta (91 flights per day).

Denver Intl
Denver Intl
From ₹ 105

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Denver Intl, with prices starting at ₹ 9,220. Explore other affordable destinations below.

Denver Intl
Denver Intl
From ₹ 105

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Related info for your journey

Access useful and relevant information related to your journey from Ontario. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 18 August 2025.

  • What are the most popular destinations to fly to from Ontario?

    For the current month, the most popular flights from Ontario are Denver, Dallas/Fort Worth Airport, Honolulu. Dallas/Fort Worth Airport, Denver, Guadalajara are the most popular locations from Ontario year round.

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as ₹ 9,220 to Denver (prices may vary depending on the airline and departure time). On average, users have booked flights for ₹ 9,657 to fly from Ontario.

  • What is the cheapest premium economy flight from Ontario?

    Options for some of the cheapest premium economy flights from Ontario we have found on Cheapflights are as follows:
    Fly from Ontario to Dallas/Fort Worth Airport starting at ₹ 180,841
    Fly from Ontario to Atlanta starting at ₹ 182,397

  • What is the cheapest month to fly from Ontario?

    August is currently the cheapest month to fly from Ontario. At this moment in time March is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.

  • Where are the cheapest places to fly to from Ontario?

    Here are some of the cheapest flight destinations from Ontario:
    Fly from Ontario to New Delhi from ₹ 57,494 round trip
    Fly from Ontario to Mumbai from ₹ 63,094 round trip
    Fly from Ontario to Hyderabad from ₹ 83,659 round trip

  • How does Cheapflights help users find flights from Ontario?

    900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight from Ontario today with Cheapflights!

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

    Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario for you. Better yet — we are completely free to use.

  • Can Cheapflights find flights from Ontario with no change fees?

    Yes, we can. To see specific flights from 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 from Ontario become cheaper?

    Of course! You can now track prices for flights from Ontario and get an alert from Cheapflights when they change. Click the bell icon next to the flight deals above and provide your email address to set up price alerts.

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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 from Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight from Ontario today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ontario with no change fees?

Yes, we can. To see specific flights from 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 from Ontario become cheaper?

Of course! You can now track prices for flights from Ontario and get an alert from Cheapflights when they change. Click the bell icon next to the flight deals above and provide your email address to set up price alerts.

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