Direct 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 13 July 2025.

Sat 11/1007:10ONT - PDX

Nonstop2h 20mHawaiian Airlines

Tue 14/1007:40PDX - ONT

Nonstop2h 21mHawaiian Airlines

Deal found 11/7$295

Fri 26/907:10ONT - PDX

Nonstop2h 19mAlaska Airlines

Sun 28/921:30PDX - ONT

Nonstop2h 24mAlaska Airlines

Deal found 12/7$328

Last-minute flights from Ontario
Discover last-minute flight deals departing from Ontario. Data was last updated 13 July 2025 and is based on user searches.

Fri 18/718:10ONT - PDX

Nonstop2h 17mHawaiian Airlines

Mon 21/721:41PDX - ONT

Nonstop2h 18mHawaiian Airlines

Deal found 11/7$661

Tue 22/718:10ONT - PDX

Nonstop2h 17mAlaska Airlines

Wed 23/707:01PDX - ONT

Nonstop2h 22mAlaska Airlines

Deal found 13/7$494

Find direct flights from Ontario within your budget

Fly to

Route

Departure

Return

Price

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sat 11/10

07:10-09:30

Nonstop2h 20m

Portland

Tue 14/10

07:40-10:01

Nonstop2h 21m

$295

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Fri 26/9

07:10-09:29

Nonstop2h 19m

Portland

Mon 29/9

21:30-23:54

Nonstop2h 24m

$328

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Wed 13/8

07:30-09:44

Nonstop2h 14m

$181

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sat 29/11

07:00-09:24

Nonstop2h 24m

$315

Flights are sorted by cheapest return flights first.

Deals found on 11/7

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.

Reviews of airlines flying direct to Ontario

Check out reviews from past customers who have flown Alaska Airlines, Hawaiian Airlines, andUnited Airlines from Ontario to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very Good

10,000 reviews

Alaska Airlines

8.0

Very Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.8

Good

2,569 reviews

Alaska Airlines

8.0

Very Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,853 reviews

Alaska Airlines

8.0

Very Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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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 13/8. 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.

Direct 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 13 July 2025.

Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 13 July 2025.

Last-minute flights from Ontario
Discover last-minute flight deals departing from Ontario. Data was last updated 13 July 2025 and is based on user searches.

Discover last-minute flight deals departing from Ontario. Data was last updated 13 July 2025 and is based on user searches.

One-way flights from Ontario
Search for one-way flight options from Ontario. Find affordable one-way fares based on user searches. Data last updated 13 July 2025.

Search for one-way flight options from Ontario. Find affordable one-way fares based on user searches. Data last updated 13 July 2025.

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 134,765 searches. This data was last updated on 13 July 2025.

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.

Reviews of airlines flying direct to Ontario

Check out reviews from past customers who have flown Alaska Airlines, Hawaiian Airlines, andUnited Airlines from Ontario to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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$181+ 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 13/8. 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.

Direct flights from Ontario

Cheapest flights from OntarioExplore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 13 July 2025.

Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 13 July 2025.

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 134,765 searches. This data was last updated on 13 July 2025.

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.

Reviews of airlines flying direct to Ontario

Check out reviews from past customers who have flown Alaska Airlines, Hawaiian Airlines, andUnited Airlines from Ontario to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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.

100% Free

Book with Flexibility

Travel Smart

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 13 July 2025.