What airlines fly to Ontario?

Alaska Airlines, Frontier and Delta are the top three most popular airlines that fly to Ontario from Oregon according to our data. Alaska Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 11 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

How many flights depart from Oregon to Ontario on average per day?

6 flights are operational daily from Oregon to Ontario as of February 2026. The most popular departure time for this route is 2:00PM, with 68% of flights per day taking off in the afternoon.

What is the cheapest airline that flies from Oregon to Ontario?

Frontier, Hawaiian Airlines, and Southwest are the most popular carriers operating from Oregon to Ontario

How long does it take to fly to Ontario?

Average flight duration from Oregon to Ontario depends on which airport you fly into and out of. Flying from Medford to Los Angeles is 2h on average, while flying from Eugene to Los Angeles is 2h 12m on average. Los Angeles is the most popular airport in Ontario.

How many flights depart from Oregon to Ontario on average per week?

The number of flights available between Oregon and Ontario is 46 per week as of February 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

When did momondo last update prices for flights from Oregon to Ontario Airport?

Prices for flights from Oregon to Ontario Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Oregon to Ontario Airport?

There are 6 operators available for flights from Oregon to Ontario Airport as of February 2026.

How old do you have to be to fly from Oregon to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oregon to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$79 Cheap Flights from Oregon to Ontario in 2026

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Find the cheapest flights from Oregon to Los Angeles

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:07 pm - 7:14 pm

BOI

ONT

2h 07mnonstop

7:37 pm - 10:36 pm

ONT

BOI

1h 59mnonstop

$137Alaska Airlines

Tue, Mar 10 - Sat, Mar 14

8:50 am - 1:54 pm

BOI

ONT

6h 04m

1 stop

11:59 am - 6:42 pm

ONT

BOI

5h 43m

1 stop

$147Delta

Wed, Mar 4 - Wed, Mar 11

12:27 pm - 11:55 pm

PDX

ONT

11h 28m

1 stop

12:59 am - 11:42 am

ONT

PDX

10h 43m

1 stop

$160Frontier

Sat, Apr 25 - Fri, May 1

3:50 pm - 7:54 pm

PDX

ONT

4h 04m

1 stop

6:15 am - 12:33 pm

ONT

PDX

6h 18m

1 stop

$162United Airlines

Mon, Mar 2 - Thu, Mar 12

12:52 pm - 8:04 pm

PDX

ONT

7h 12m

1 stop

7:18 pm - 8:59 am

ONT

PDX

13h 41m

1 stop

$169Frontier

Thu, May 7 - Sat, May 9

10:55 am - 9:20 pm

PDX

ONT

10h 25m

2 stops

6:10 pm - 1:40 am

ONT

PDX

7h 30m

1 stop

$172Southwest

Fri, Mar 6 - Sat, Mar 7

5:16 pm - 11:59 pm

BOI

ONT

7h 43m

1 stop

6:15 am - 11:20 am

ONT

BOI

28h 05m

1 stop

$174Multiple Airlines

Wed, Mar 18 - Wed, Mar 25

10:55 am - 9:20 pm

PDX

ONT

10h 25m

2 stops

6:15 am - 1:35 pm

ONT

PDX

7h 20m

1 stop

$178Southwest

Fri, Mar 6 - Sun, Mar 8

12:10 pm - 1:40 pm

RDM

ONT

25h 30m

1 stop

8:59 pm - 11:30 am

ONT

RDM

14h 31m

1 stop

$182Multiple Airlines

Mon, Apr 13 - Thu, Apr 16

6:36 pm - 10:59 pm

MFR

ONT

4h 23m

1 stop

6:00 am - 11:47 am

ONT

MFR

5h 47m

1 stop

$240United Airlines

Wed, May 13 - Sun, May 17

Frontier flights from Oregon to Ontario

Our best Frontier deals on Oregon to Ontario flight tickets

Frontier

Apr 25

PDX12:27 pmPortland

11h 28m

1 stop

ONT11:55 pmOntario

May 1

ONT12:59 amOntario

10h 43m

1 stop

PDX11:42 amPortland

$160

Frontier

May 7

PDX12:52 pmPortland

7h 12m

1 stop

ONT8:04 pmOntario

May 9

ONT7:18 pmOntario

13h 41m

1 stop

PDX8:59 amPortland

$169

Frontier

Apr 18

PDX12:27 pmPortland

11h 28m

1 stop

ONT11:55 pmOntario

Apr 19

ONT12:59 amOntario

10h 04m

1 stop

PDX11:03 amPortland

$171

United Airlines flights from Oregon to Ontario

Our best United Airlines deals on Oregon to Ontario flight tickets

United Airlines

Mar 2

PDX3:50 pmPortland

4h 04m

1 stop

ONT7:54 pmOntario

Mar 12

ONT6:15 amOntario

6h 18m

1 stop

PDX12:33 pmPortland

$162

United Airlines

Apr 8

PDX7:15 amPortland

4h 59m

1 stop

ONT12:14 pmOntario

Apr 9

ONT1:27 pmOntario

7h 21m

1 stop

PDX8:48 pmPortland

$192

United Airlines

Mar 14

PDX1:39 pmPortland

3h 59m

1 stop

ONT5:38 pmOntario

Mar 15

ONT6:15 amOntario

6h 18m

1 stop

PDX12:33 pmPortland

$198

Fly from

Fly to

Route

Depart

Return

Price

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 3/10

6:07 pm-7:14 pm

Nonstop2h 07m

Ontario

Sat 3/14

7:37 pm-10:36 pm

Nonstop1h 59m

$137

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Wed 3/4

8:50 am-1:54 pm

1 stop6h 04m

Ontario

Wed 3/11

11:59 am-6:42 pm

1 stop5h 43m

$147

PortlandOntario

PDX - ONT

PDXONT

Portland

Sat 4/25

12:27 pm-11:55 pm

1 stop11h 28m

Ontario

Fri 5/1

12:59 am-11:42 am

1 stop10h 43m

$160

PortlandOntario

PDX - ONT

PDXONT

Portland

Mon 3/2

3:50 pm-7:54 pm

1 stop4h 04m

Ontario

Thu 3/12

6:15 am-12:33 pm

1 stop6h 18m

$162

PortlandOntario

PDX - ONT

PDXONT

Portland

Thu 5/7

12:52 pm-8:04 pm

1 stop7h 12m

Ontario

Sat 5/9

7:18 pm-8:59 am

1 stop13h 41m

$169

PortlandOntario

PDX - ONT

PDXONT

Portland

Fri 3/6

10:55 am-9:20 pm

2 stops10h 25m

Ontario

Sat 3/7

6:10 pm-1:40 am

1 stop7h 30m

$172

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Wed 3/18

5:16 pm-11:59 pm

1 stop7h 43m

Ontario

Wed 3/25

6:15 am-11:20 am

1 stop28h 05m

$174

PortlandOntario

PDX - ONT

PDXONT

Portland

Fri 3/6

10:55 am-9:20 pm

2 stops10h 25m

Ontario

Sun 3/8

6:15 am-1:35 pm

1 stop7h 20m

$178

RedmondOntario

RDM - ONT

RDMONT

Bend/Redmond

Mon 4/13

12:10 pm-1:40 pm

1 stop25h 30m

Ontario

Thu 4/16

8:59 pm-11:30 am

1 stop14h 31m

$182

MedfordOntario

MFR - ONT

MFRONT

Medford

Wed 5/13

6:36 pm-10:59 pm

1 stop4h 23m

Ontario

Sun 5/17

6:00 am-11:47 am

1 stop5h 47m

$240

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Oregon to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Ontario?

In general, July is the cheapest month to fly from Oregon to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $168. If you aren’t able to travel during the month of July, then book flights to Ontario from Oregon during August instead. Flights to Ontario in August, while not as cheap as those in July, still average around $172.

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

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $187. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Oregon to Ontario for around $297.

What is the cheapest time of day to depart on your flight to Ontario?

In the morning is the cheapest time of day to fly from Oregon to Ontario when you can find flight prices for as low as $184. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $309 on average. Flights to Ontario from Oregon in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Oregon to Ontario flight route?

Fly from Portland to Ontario for the best Oregon - 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 Oregon when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $232 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Oregon for as low as $163 on momondo.

What cabin class options are available on Oregon to Ontario flights?

There are 4 cabin classes available to choose from on Oregon to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Oregon to Ontario flights?

No. A direct flight is the cheapest option for a flight between Oregon to Ontario.

Cheap Oregon to Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Oregon to Ontario

Best Price Found	$123
Fastest flight time	2h 03m
Direct flights	Every day
Airports in Ontario	1 airport

The best one-way flight to Ontario from Oregon in the past 72 hours is $123. The best round-trip flight deal from Oregon to Ontario found on momondo in the last 72 hours is $197.

The fastest flight from Oregon to Ontario takes 2h 03m

Direct flights go from Oregon to Ontario every day.

There is 1 airport in Ontario. From Oregon there are direct flights to Ontario (ONT).

Search flight deals

When did momondo last update prices for flights from Oregon to Ontario Airport?
Prices for flights from Oregon to Ontario Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Oregon to Ontario Airport?
There are 6 operators available for flights from Oregon to Ontario Airport as of February 2026.
How old do you have to be to fly from Oregon to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oregon to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Oregon to Ontario?
momondo data reveals that the most frequently booked plane model on the route from Oregon to Ontario is Boeing 737-800 Passenger/BBJ2 (winglets), representing 25.05% of all bookings. The subsequent popular models are Boeing 737 MAX 9 at 11.69%, Boeing 737-900 Passenger/BBJ3 (winglets) at 11.69%, and Embraer 175 at 11.06%.

Best airlines flying from Oregon to Ontario

Compare and see reviews for airlines that fly from Oregon to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $53	Free Cancellation	Rating 5.7 3,052 reviews	Search Frontier flights
Delta	PriceFrom $83	Free Cancellation	Rating 7.9 8,148 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $88	Free Cancellation	Rating 7.8 2,831 reviews	Search Hawaiian Airlines flights
United Airlines	PriceFrom $142	Free Cancellation	Rating 7.4 9,235 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $157	Free Cancellation	Rating 8.0 11,838 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $173	Free Cancellation	Rating 8.0 4,274 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Oregon to Ontario?

It is quick and easy to find Oregon to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

Can I find flights from Oregon to Ontario with flexible booking policies on momondo?

Flights from Oregon to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Oregon to Ontario?

momondo helps you find the best flight between Oregon and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Oregon to Ontario right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Oregon to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.

An easier way to manage your Ontario trip

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Cheap flights from Oregon to Los Angeles from $79

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oregon to Los Angeles departing on 3/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Oregon to Ontario

Our best Frontier deals on Oregon to Ontario flight tickets

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Our best United Airlines deals on Oregon to Ontario flight tickets

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Use the filters below to find and compare flights from Oregon to Ontario that are best for you.

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How to get the cheapest flight ticket from Oregon to Ontario

What is the cheapest month to fly to Ontario?

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

What is the cheapest time of day to depart on your flight to Ontario?

What is the cheapest Oregon to Ontario flight route?

Fly from Portland to Ontario for the best Oregon - Ontario flight prices

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

What cabin class options are available on Oregon to Ontario flights?

There are 4 cabin classes available to choose from on Oregon to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Oregon to Ontario flights?

No. A direct flight is the cheapest option for a flight between Oregon to Ontario.

What is the cheapest airline that flies from Oregon to Ontario?

Frontier, Hawaiian Airlines, and Southwest are the most popular carriers operating from Oregon to Ontario

What airlines fly to Ontario?

How many flights depart from Oregon to Ontario on average per day?

6 flights are operational daily from Oregon to Ontario as of February 2026. The most popular departure time for this route is 2:00PM, with 68% of flights per day taking off in the afternoon.

How many flights depart from Oregon to Ontario on average per week?

The number of flights available between Oregon and Ontario is 46 per week as of February 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

How long does it take to fly to Ontario?

Average flight duration from Oregon to Ontario depends on which airport you fly into and out of. Flying from Medford to Los Angeles is 2h on average, while flying from Eugene to Los Angeles is 2h 12m on average. Los Angeles is the most popular airport in Ontario.

Cheap Oregon to Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Oregon to Ontario

Best Price Found

Fastest flight time

Direct flights

Airports in Ontario

When did momondo last update prices for flights from Oregon to Ontario Airport?

How many operators does momondo search for flights from Oregon to Ontario Airport?

How old do you have to be to fly from Oregon to Ontario Airport?

What documentation or ID do you need to fly to Ontario Airport?

What is the most popular plane model from Oregon to Ontario?

Best airlines flying from Oregon to Ontario

Compare and see reviews for airlines that fly from Oregon to Ontario with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Oregon to Ontario?

Can I find flights from Oregon to Ontario with flexible booking policies on momondo?

How can momondo help me find flights from Oregon to Ontario?

I’m not ready to book a flight from Oregon to Ontario right now. Can momondo alert me if prices change?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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Airports servicing California

Fly your favorite airline to Los Angeles

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Los Angeles

List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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