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Find and compare Delta flights to Ontario

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Recent Delta flights to Ontario found by users

Cheap Delta Flight Deals to Ontario

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Delta Logo
2:19 pm - 5:07 pmSEA-ONT
2h 48mnonstop
Delta Logo
6:00 am - 12:57 pmONT-SEA
6h 57m1 stop
$129Delta
Find Deal
Thu, Dec 11 - Thu, Dec 18
Delta Logo
5:00 pm - 9:55 pmSEA-ONT
4h 55m1 stop
Delta Logo
6:40 am - 9:45 amONT-SEA
3h 05mnonstop
$130Delta
Find Deal
Sat, Dec 13 - Sun, Dec 14
Delta Logo
7:11 pm - 11:58 pmSEA-ONT
4h 47m1 stop
Delta Logo
4:49 pm - 11:25 pmONT-SEA
6h 36m1 stop
$139Delta
Find Deal
Fri, Dec 12 - Tue, Dec 16
Delta Logo
9:45 am - 12:32 pmSEA-ONT
2h 47mnonstop
Delta Logo
5:03 pm - 11:22 pmONT-SEA
6h 19m1 stop
$148Delta
Find Deal
Wed, Dec 31 - Tue, Jan 6
Delta Logo
5:00 pm - 9:55 pmSEA-ONT
4h 55m1 stop
Delta Logo
12:40 pm - 3:37 pmONT-SEA
2h 57mnonstop
$149Delta
Find Deal
Sat, Dec 13 - Fri, Dec 19
Delta Logo
8:05 pm - 10:47 pmSEA-ONT
2h 42mnonstop
Delta Logo
5:49 pm - 8:49 pmONT-SEA
3h 00mnonstop
$159Delta
Find Deal
Mon, Dec 15 - Tue, Dec 16
Delta Logo
8:30 am - 11:13 amSEA-ONT
2h 43mnonstop
Delta Logo
6:00 am - 12:57 pmONT-SEA
6h 57m1 stop
$169Delta
Find Deal
Wed, Dec 3 - Thu, Dec 4
Delta Logo
5:00 pm - 11:58 pmSEA-ONT
6h 58m1 stop
Delta Logo
6:40 am - 9:45 amONT-SEA
3h 05mnonstop
$178Delta
Find Deal
Wed, Dec 3 - Wed, Dec 17
Delta Logo
7:11 pm - 11:58 pmSEA-ONT
4h 47m1 stop
Delta Logo
4:49 pm - 11:25 pmONT-SEA
6h 36m1 stop
$179Delta
Find Deal
Mon, Dec 15 - Tue, Dec 16
Delta Logo
9:45 am - 12:32 pmSEA-ONT
2h 47mnonstop
Delta Logo
7:30 am - 10:36 amONT-SEA
3h 06mnonstop
$187Delta
Find Deal
Wed, Dec 31 - Mon, Jan 5

Delta flights to Ontario at a glance

Fastest flight time

2h 38m

Direct flights

Every day

Airports in Ontario

1 airport
The fastest flight from United States to Ontario takes 2h 38m
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Direct flights go from United States to Ontario every day.
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There is 1 airport near Ontario: Ontario (ONT)
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Insights on Delta flights to Ontario

Data designed to help you find the right flight

What cabin class options are available on United States to Ontario flights?

There are 4 cabin classes available to choose from on United States to Ontario flights.

What is the cheapest day to depart on your Economy Class flight to Ontario?

The cheapest day to depart from United States to Ontario is on a Thursday when prices can be found for as low as $276. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average Economy Class ticket price to Ontario on a Monday is $519.

What is the cheapest month to fly Economy Class to Ontario?

In general, June is the cheapest month to fly Economy Class from United States to Ontario. Due to it being the ‘off-season’ during this time, you can expect Economy Class flight prices to be around $286. If you aren’t able to travel during the month of June, then book Economy Class flights to Ontario from United States during September instead. Economy Class flights to Ontario in September, while not as cheap as those in June, still average around $286.

What is the cheapest United States to Ontario flight route?

Fly from Atlanta Hartsfield-Jackson to Ontario for the best United States - Ontario flight prices

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $516 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from United States for as low as $367 on momondo.

Can stopping save me money on United States to Ontario flights?

You could potentially save up to 20% on your flight if you consider stops on a United States to Ontario flight.

Frequently asked questions about flights to Ontario with Delta

Is Delta generally cheaper than other airlines for flights to Ontario?

Lots of factors influence the price of a flight, whether that's with Delta or other airlines so it is best to search and compare before booking. The airline flying to Ontario with the cheapest average return price tends to be Frontier.

Which other airlines fly to Ontario?

Aside from Delta, Frontier, Southwest and JetBlue also fly to Ontario.

How much is a flight to Ontario with Delta?

The average price for a one-way flight is $458.

Which airport do Delta flights arrive at for Ontario?

Flights from Delta on this route tend to land in Ontario Airport.

Which other airlines in the SkyTeam operate flights to Ontario?

Among SkyTeam carriers, only Delta currently provides flights to Ontario.

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