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₹ 6,270+ Direct 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 27/1. 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
20 Jan — 27 Jan1
1 adult
1 adult, Economy, 0 bags

Direct flights from Ontario

Enter your travel dates to find the best prices.

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 21 December 2025.

Sat 7/316:02ONT - SEA
Nonstop2h 50mAlaska Airlines
Tue 10/320:05SEA - ONT
Nonstop2h 39mAlaska Airlines
Deal found 19/12₹ 11,465
Thu 19/206:14ONT - SEA
Nonstop2h 55mAlaska Airlines
Tue 24/212:30SEA - ONT
Nonstop2h 38mAlaska Airlines
Deal found 21/12₹ 11,555
Sat 10/111:53ONT - SEA
Nonstop2h 51mAlaska Airlines
Tue 13/118:00SEA - ONT
Nonstop2h 36mAlaska Airlines
Deal found 20/12₹ 12,361
Thu 15/116:03ONT - SEA
Nonstop2h 51mAlaska Airlines
Thu 22/112:31SEA - ONT
Nonstop2h 37mAlaska Airlines
Deal found 18/12₹ 12,451
Fri 16/115:30ONT - SEA
Nonstop3h 05mDelta
Sat 17/120:07SEA - ONT
Nonstop2h 44mDelta
Deal found 21/12₹ 13,346
Thu 22/115:30ONT - SEA
Nonstop3h 05mDelta
Sun 25/111:15SEA - ONT
Nonstop2h 41mDelta
Deal found 20/12₹ 13,436
Sat 17/111:53ONT - SEA
Nonstop2h 51mAlaska Airlines
Sat 17/118:00SEA - ONT
Nonstop2h 36mAlaska Airlines
Deal found 19/12₹ 13,705
Sat 17/116:03ONT - SEA
Nonstop2h 51mAlaska Airlines
Mon 19/121:20SEA - ONT
Nonstop2h 36mAlaska Airlines
Deal found 21/12₹ 14,153
Mon 12/111:53ONT - SEA
Nonstop2h 51mAlaska Airlines
Wed 14/118:00SEA - ONT
Nonstop2h 36mAlaska Airlines
Deal found 19/12₹ 14,242
Fri 9/116:03ONT - SEA
Nonstop2h 51mAlaska Airlines
Sat 10/118:00SEA - ONT
Nonstop2h 36mAlaska Airlines
Deal found 18/12₹ 15,048
Sat 10/111:53ONT - SEA
Nonstop2h 51mAlaska Airlines
Sun 11/108:15SEA - ONT
Nonstop2h 44mAlaska Airlines
Deal found 19/12₹ 15,138
Sun 11/106:00ONT - SEA
Nonstop2h 54mAlaska Airlines
Tue 13/118:00SEA - ONT
Nonstop2h 36mAlaska Airlines
Deal found 20/12₹ 15,944

Find direct flights from Ontario within your budget

 
Use the slider to find direct flights from Ontario within your budget. Price data is based on user searches made on Cheapflights. Over the past seven days, Cheapflights users made 454,620 searches. This data was last updated on 21 December 2025.

Fly to

New Delhi

Route

Depart

Return

Price

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 7/3

16:02-18:52

Nonstop2h 50m

Seattle/Tacoma Intl

Tue 10/3

20:05-22:44

Nonstop2h 39m

₹ 11,465

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 7/3

06:14-09:09

Nonstop2h 55m

Seattle/Tacoma Intl

Wed 11/3

20:05-22:44

Nonstop2h 39m

₹ 11,465

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 15/1

11:53-14:44

Nonstop2h 51m

Seattle/Tacoma Intl

Fri 23/1

08:15-10:59

Nonstop2h 44m

₹ 11,555

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 26/2

16:02-18:52

Nonstop2h 50m

Seattle/Tacoma Intl

Wed 4/3

20:05-22:44

Nonstop2h 39m

₹ 11,555

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 19/2

06:14-09:09

Nonstop2h 55m

Seattle/Tacoma Intl

Mon 23/2

20:56-23:32

Nonstop2h 36m

₹ 11,555

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Fri 23/1

11:53-14:44

Nonstop2h 51m

Seattle/Tacoma Intl

Sun 25/1

08:15-10:59

Nonstop2h 44m

₹ 11,555

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 10/1

11:53-14:44

Nonstop2h 51m

Seattle/Tacoma Intl

Tue 13/1

18:00-20:36

Nonstop2h 36m

₹ 12,361

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 10/1

16:03-18:54

Nonstop2h 51m

Seattle/Tacoma Intl

Mon 12/1

21:20-23:56

Nonstop2h 36m

₹ 12,451

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 15/1

16:03-18:54

Nonstop2h 51m

Seattle/Tacoma Intl

Thu 22/1

12:31-15:08

Nonstop2h 37m

₹ 12,451

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Thu 15/1

06:00-08:54

Nonstop2h 54m

Seattle/Tacoma Intl

Sun 18/1

08:15-10:59

Nonstop2h 44m

₹ 12,451

Flights are sorted by cheapest return flights first.

Deals found on 21/12

Showing 1-10 of 20 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.

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 21 December 2025.

  • Where can you fly direct from Ontario?

    Currently, the most popular direct flight destination from Ontario is Denver.

  • What is the best time of year to fly direct from Ontario?

    If you're seeking the lowest price on a direct flight from Ontario, January is worth consideration as prices are at their lowest, on average. In terms of the number of daily non-stop flights, November offers travelers the most options.

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