Find flights
Deals

₹ 8,973+ 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 14/2. 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
16 Feb — 23 Feb1
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 17 January 2026.

Sat 4/417:53
ONT
-
SEA
Nonstop2h 57m
Delta
Tue 21/414:30
SEA
-
ONT
Nonstop2h 45m
Delta
Deal found 15/1₹ 14,229
Fri 20/319:08
ONT
-
SEA
Nonstop2h 49m
Alaska Airlines
Wed 25/307:00
SEA
-
ONT
Nonstop2h 39m
Alaska Airlines
Deal found 15/1₹ 14,320
Thu 19/206:14
ONT
-
SEA
Nonstop2h 55m
Alaska Airlines
Mon 23/220:56
SEA
-
ONT
Nonstop2h 36m
Alaska Airlines
Deal found 15/1₹ 14,411
Thu 19/207:30
ONT
-
SEA
Nonstop3h 04m
Delta
Sun 22/219:55
SEA
-
ONT
Nonstop2h 42m
Delta
Deal found 15/1₹ 14,501
Sun 5/406:00
ONT
-
SEA
Nonstop2h 54m
Alaska Airlines
Wed 15/421:24
SEA
-
ONT
Nonstop2h 35m
Alaska Airlines
Deal found 15/1₹ 15,136
Sun 5/406:00
ONT
-
SEA
Nonstop2h 55m
Delta
Mon 20/414:30
SEA
-
ONT
Nonstop2h 45m
Delta
Deal found 15/1₹ 16,042
Sat 21/317:53
ONT
-
SEA
Nonstop2h 57m
Delta
Mon 23/319:50
SEA
-
ONT
Nonstop2h 44m
Delta
Deal found 15/1₹ 16,133
Fri 13/317:53
ONT
-
SEA
Nonstop2h 57m
Delta
Sun 15/308:30
SEA
-
ONT
Nonstop2h 48m
Delta
Deal found 15/1₹ 16,223
Sat 18/406:00
ONT
-
SEA
Nonstop2h 54m
Alaska Airlines
Sat 25/411:38
SEA
-
ONT
Nonstop2h 54m
Alaska Airlines
Deal found 17/1₹ 16,948
Fri 13/316:02
ONT
-
SEA
Nonstop2h 50m
Alaska Airlines
Sun 15/308:30
SEA
-
ONT
Nonstop2h 38m
Alaska Airlines
Deal found 15/1₹ 17,039
Wed 4/211:53
ONT
-
SEA
Nonstop2h 51m
Alaska Airlines
Wed 4/218:00
SEA
-
ONT
Nonstop2h 36m
Alaska Airlines
Deal found 14/1₹ 17,402
Tue 24/306:00
ONT
-
SEA
Nonstop2h 55m
Delta
Wed 25/319:50
SEA
-
ONT
Nonstop2h 44m
Delta
Deal found 16/1₹ 17,855

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 17 January 2026.

Fly to

New Delhi

Route

Depart

Return

Price

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 21/3

17:53-20:50

Nonstop2h 57m

Seattle/Tacoma Intl

Tue 24/3

08:30-11:18

Nonstop2h 48m

₹ 14,229

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 18/2

06:14-09:09

Nonstop2h 55m

Seattle/Tacoma Intl

Sat 21/2

08:30-11:08

Nonstop2h 38m

₹ 14,229

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 8/4

11:59-14:55

Nonstop2h 56m

Seattle/Tacoma Intl

Tue 14/4

08:25-11:13

Nonstop2h 48m

₹ 14,229

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Tue 21/4

06:00-08:54

Nonstop2h 54m

Seattle/Tacoma Intl

Tue 12/5

11:38-14:32

Nonstop2h 54m

₹ 14,229

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 7/2

15:30-18:35

Nonstop3h 05m

Seattle/Tacoma Intl

Tue 10/2

20:00-22:44

Nonstop2h 44m

₹ 14,229

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 11/2

11:53-14:44

Nonstop2h 51m

Seattle/Tacoma Intl

Wed 18/2

20:05-22:44

Nonstop2h 39m

₹ 14,229

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 25/2

16:02-18:52

Nonstop2h 50m

Seattle/Tacoma Intl

Sat 28/2

20:56-23:32

Nonstop2h 36m

₹ 14,229

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 14/2

16:02-18:52

Nonstop2h 50m

Seattle/Tacoma Intl

Sat 21/2

20:56-23:32

Nonstop2h 36m

₹ 14,229

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Sat 14/2

15:30-18:33

Nonstop3h 03m

Seattle/Tacoma Intl

Thu 19/2

19:55-22:37

Nonstop2h 42m

₹ 14,320

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 4/3

06:14-09:09

Nonstop2h 55m

Seattle/Tacoma Intl

Mon 9/3

08:30-11:08

Nonstop2h 38m

₹ 14,320

Flights are sorted by cheapest return flights first.

Deals found on 17/1

Showing 1-10 of 44 results
1
2
3
...
5

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 17 January 2026.

  • 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, February is worth consideration as prices are at their lowest, on average. In terms of the number of daily non-stop flights, January offers travelers the most options.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Direct flights from California cities

Book a direc flight from one of these other cities located in California.
Direct flights from San Francisco
Direct flights from Los Angeles
Direct flights from San Diego
Direct flights from San Jose

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.