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₹ 10,332+ Cheap flights from Ontario

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 19/5. 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.
ONT — DEL
30 May — 6 Jun1
1 adult
1 adult, Economy, 0 bags

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 30 April 2026. In the last 7 days, Cheapflights users made a total of 454,620 searches

Fly to

Route

Depart

Return

Price

Cheapest return flight

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 26/5

06:45-09:49

Nonstop3h 04m

Seattle/Tacoma Intl

Thu 4/6

08:25-11:10

Nonstop2h 45m

₹ 19,622

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 28/5

19:41-22:30

Nonstop2h 49m

Seattle/Tacoma Intl

Mon 1/6

21:22-23:58

Nonstop2h 36m

₹ 20,570

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 27/5

15:35-22:25

1 stop6h 50m

Seattle/Tacoma Intl

Wed 3/6

12:30-15:09

Nonstop2h 39m

₹ 23,414

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 21/5

06:45-09:49

Nonstop3h 04m

Seattle/Tacoma Intl

Wed 27/5

14:30-17:10

Nonstop2h 40m

₹ 24,362

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 19/5

18:59-01:12

1 stop6h 13m

Seattle/Tacoma Intl

Sun 24/5

07:00-12:12

1 stop5h 12m

₹ 29,101

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 9/6

14:50-23:10

2 stops8h 20m

Seattle/Tacoma Intl

Fri 12/6

19:10-00:05

1 stop4h 55m

₹ 30,523

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 28/7

06:20-09:15

Nonstop2h 55m

Seattle/Tacoma Intl

Tue 4/8

07:15-12:08

1 stop4h 53m

₹ 30,997

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Fri 15/5

13:35-16:35

Nonstop3h 00m

Seattle/Tacoma Intl

Mon 18/5

08:25-11:12

Nonstop2h 47m

₹ 30,997

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 3/6

19:48-18:52

1 stop23h 04m

Seattle/Tacoma Intl

Wed 17/6

20:33-23:11

Nonstop2h 38m

₹ 31,282

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 1/8

16:55-21:50

1 stop4h 55m

Seattle/Tacoma Intl

Sat 8/8

06:00-12:20

1 stop6h 20m

₹ 31,945

Flights are sorted by cheapest return flights first.

Deals found on 25/4

Showing 1-10 of 60 resultsSorted by cheapest first
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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 are popular destinations to fly to from Ontario?

Ontario offers frequent flights to Seattle (110 flights per day), Atlanta (93 flights per day) and Dallas (82 flights per day).

Denver Intl
Denver Intl
From ₹ 21,483
San Francisco
San Francisco
From ₹ 5,349
Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From ₹ 7,582

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is San Francisco, with prices starting at ₹ 5,349. Explore other affordable destinations below.

San Francisco
San Francisco
From ₹ 5,349
Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From ₹ 7,582
Denver Intl
Denver Intl
From ₹ 21,483

Browse thousands of different options on Cheapflights for your next trip

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Direct flights from California

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Direct flights from San Jose

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 30 April 2026.

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

    For the current month, the most popular flights from Ontario are Las Vegas, Dallas/Fort Worth Airport, Denver. Las Vegas, Dallas/Fort Worth Airport, Denver 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 ₹ 5,349 to San Francisco (prices may vary depending on the airline and departure time). On average, users have booked flights for ₹ 19,452 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 ₹ 195,892
    Fly from Ontario to Atlanta starting at ₹ 197,577

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

    Here are some of the cheapest flight destinations from Ontario:
    Fly from Ontario to Mumbai from ₹ 89,484 round trip
    Fly from Ontario to New Delhi from ₹ 93,086 round trip
    Fly from Ontario to Bengaluru from ₹ 113,846 round trip
    Fly from Ontario to Chennai from ₹ 119,344 round trip
    Fly from Ontario to Hyderabad from ₹ 128,065 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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