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

Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Ontario to Oregon

What airlines fly to Oregon?

Alaska Airlines, Frontier and Delta are the top three most popular airlines that fly to Oregon from Ontario according to our data. Alaska Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Oregon. Keep in mind that there are 11 different airlines that fly to Oregon on a routine basis, so you have a few additional options to choose from.

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

The number of flights available between Ontario and Oregon is 4 per day as of August 2026. The most frequent departure time is 7:00AM, with 63% of daily flights leaving at noon.

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

34 flights are operational weekly from Ontario to Oregon as of August 2026. The most popular departure day for this route is Mon, with 21% of flights per week taking off on this day.

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

Prices for flights from Ontario Airport to Oregon were last updated today.

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

As of August 2026, there are 6 operators available to choose from for flights from Ontario Airport to Oregon.

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

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 Ontario Airport to Oregon.

What documentation or ID do you need to fly to Oregon?

The travel and health documents required for your trip to Oregon can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Oregon. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$70 Cheap Flights from Ontario to Oregon in 2026

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2:30 pm - 1:55 pmONT Ontario-BOI Boise Air Term. Gowen Fld

22h 25m1 stop Las Vegas Harry Reid Intl

2:50 pm - 9:09 amBOI Boise Air Term. Gowen Fld-ONT Ontario

19h 19m1 stop Las Vegas Harry Reid Intl

$145Frontier

Wed, Sep 23 - Mon, Sep 28

8:00 am - 1:55 pmONT Ontario-BOI Boise Air Term. Gowen Fld

4h 55m1 stop Las Vegas Harry Reid Intl

2:50 pm - 9:09 amBOI Boise Air Term. Gowen Fld-ONT Ontario

19h 19m1 stop Las Vegas Harry Reid Intl

$150Frontier

Thu, Sep 24 - Mon, Sep 28

5:45 pm - 11:40 pmONT Ontario-BOI Boise Air Term. Gowen Fld

4h 55m1 stop Las Vegas Harry Reid Intl

7:40 am - 10:15 amBOI Boise Air Term. Gowen Fld-ONT Ontario

3h 35m1 stop Sacramento Intl

$175Southwest

Thu, Sep 10 - Wed, Sep 16

9:15 am - 3:55 pmONT Ontario-BOI Boise Air Term. Gowen Fld

5h 40m1 stop Denver Intl

11:35 am - 2:15 pmBOI Boise Air Term. Gowen Fld-ONT Ontario

3h 40m1 stop San Jose

$175Southwest

Sat, Sep 12 - Sat, Sep 19

4:42 pm - 7:43 pmONT Ontario-BOI Boise Air Term. Gowen Fld

2h 01mnonstop

4:48 pm - 6:04 pmBOI Boise Air Term. Gowen Fld-ONT Ontario

2h 16mnonstop

$197Alaska Airlines

Sat, Oct 31 - Tue, Nov 3

4:42 pm - 7:43 pmONT Ontario-BOI Boise Air Term. Gowen Fld

2h 01mnonstop

4:48 pm - 6:04 pmBOI Boise Air Term. Gowen Fld-ONT Ontario

2h 16mnonstop

$197Alaska Airlines

Sat, Oct 31 - Wed, Nov 4

1:24 pm - 6:46 pmONT Ontario-BOI Boise Air Term. Gowen Fld

4h 22m1 stop Salt Lake City

6:50 pm - 11:55 pmBOI Boise Air Term. Gowen Fld-ONT Ontario

6h 05m1 stop Salt Lake City

$207Delta

Sat, Oct 17 - Tue, Oct 20

5:15 pm - 11:58 pmONT Ontario-BOI Boise Air Term. Gowen Fld

5h 43m1 stop Salt Lake City

1:06 pm - 4:35 pmBOI Boise Air Term. Gowen Fld-ONT Ontario

4h 29m1 stop Salt Lake City

$207Delta

Tue, Sep 22 - Sat, Oct 3

8:24 pm - 8:32 amONT Ontario-MFR Medford

12h 08m1 stop Las Vegas Harry Reid Intl

3:40 pm - 9:09 amMFR Medford-ONT Ontario

17h 29m1 stop Las Vegas Harry Reid Intl

$231Multiple Airlines

Thu, Sep 24 - Mon, Sep 28

6:15 am - 11:50 amONT Ontario-PDX Portland

5h 35m1 stop Phoenix Sky Harbor Intl

5:45 pm - 10:43 pmPDX Portland-ONT Ontario

4h 58m1 stop Phoenix Sky Harbor Intl

$250American Airlines

Sun, Sep 13 - Thu, Sep 17

Cheap last minute flights

Enter your travel dates to find the best prices.

6:00 am - 12:29 pmONT Ontario-BOI Boise Air Term. Gowen Fld

5h 29m1 stop Denver Intl

1:24 pm - 11:50 pmBOI Boise Air Term. Gowen Fld-ONT Ontario

11h 26m1 stop Denver Intl

$179Frontier

Sun, Aug 16 - Tue, Aug 18

6:00 am - 5:11 pmONT Ontario-PDX Portland

11h 11m1 stop Denver Intl

6:17 pm - 3:49 pmPDX Portland-ONT Ontario

21h 32m1 stop Las Vegas Harry Reid Intl

$255Frontier

Tue, Aug 18 - Mon, Aug 31

6:30 pm - 10:50 pmONT Ontario-BOI Boise Air Term. Gowen Fld

3h 20m1 stop Sacramento Intl

7:40 am - 1:10 pmBOI Boise Air Term. Gowen Fld-ONT Ontario

6h 30m1 stop Sacramento Intl

$263Southwest

Mon, Aug 17 - Wed, Aug 19

5:05 pm - 11:59 pmONT Ontario-BOI Boise Air Term. Gowen Fld

5h 54m1 stop Salt Lake City

5:15 pm - 10:23 pmBOI Boise Air Term. Gowen Fld-ONT Ontario

6h 08m1 stop Salt Lake City

$263Delta

Tue, Aug 18 - Sat, Aug 22

5:05 pm - 11:59 pmONT Ontario-BOI Boise Air Term. Gowen Fld

5h 54m1 stop Salt Lake City

10:58 am - 4:24 pmBOI Boise Air Term. Gowen Fld-ONT Ontario

6h 26m1 stop Salt Lake City

$268Delta

Fri, Aug 14 - Sat, Aug 15

4:10 pm - 11:35 pmONT Ontario-BOI Boise Air Term. Gowen Fld

6h 25m2 stops Sacramento Intl Las Vegas Harry Reid Intl

7:40 am - 10:15 amBOI Boise Air Term. Gowen Fld-ONT Ontario

3h 35m1 stop Sacramento Intl

$273Southwest

Mon, Aug 17 - Wed, Aug 19

10:49 am - 4:51 pmONT Ontario-PDX Portland

6h 02m1 stop Denver Intl

7:18 am - 9:51 amPDX Portland-ONT Ontario

2h 33mnonstop

$374Multiple Airlines

Fri, Aug 14 - Mon, Sep 14

6:00 am - 4:51 pmONT Ontario-PDX Portland

10h 51m1 stop Denver Intl

7:18 am - 9:51 amPDX Portland-ONT Ontario

2h 33mnonstop

$384Multiple Airlines

Mon, Aug 17 - Fri, Sep 4

6:08 am - 12:01 pmONT Ontario-OTH North Bend

5h 53m1 stop San Francisco

2:06 pm - 8:01 pmOTH North Bend-ONT Ontario

5h 55m1 stop San Francisco

$409United Airlines

Mon, Aug 17 - Sat, Aug 22

9:01 am - 2:47 pmONT Ontario-PDX Portland

5h 46m1 stop San Francisco

7:00 am - 12:12 pmPDX Portland-ONT Ontario

5h 12m1 stop San Francisco

$443United Airlines

Sun, Aug 16 - Thu, Aug 27

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Delta flights from Ontario to Oregon

Our best Delta deals on Ontario to Oregon flight tickets

Delta

Oct 22

ONT6:00 amOntario

5h 16m

1 stop

BOI12:16 pmBoise Air Term. Gowen Fld

Oct 27

BOI6:50 pmBoise Air Term. Gowen Fld

6h 05m

1 stop

ONT11:55 pmOntario

$214

Delta

Sep 1

ONT6:00 amOntario

5h 14m

1 stop

BOI12:14 pmBoise Air Term. Gowen Fld

Sep 5

BOI6:44 pmBoise Air Term. Gowen Fld

4h 39m

1 stop

ONT10:23 pmOntario

$221

Delta

Oct 18

ONT6:00 amOntario

3h 42m

1 stop

BOI10:42 amBoise Air Term. Gowen Fld

Oct 22

BOI6:00 amBoise Air Term. Gowen Fld

3h 55m

1 stop

ONT8:55 amOntario

$224

Alaska Airlines flights from Ontario to Oregon

Our best Alaska Airlines deals on Ontario to Oregon flight tickets

Alaska Airlines

Oct 31

ONT4:42 pmOntario

2h 01m

BOI7:43 pmBoise Air Term. Gowen Fld

Nov 4

BOI4:48 pmBoise Air Term. Gowen Fld

2h 16m

ONT6:04 pmOntario

$197

Alaska Airlines

Oct 3

ONT4:42 pmOntario

2h 01m

BOI7:43 pmBoise Air Term. Gowen Fld

Oct 7

BOI2:51 pmBoise Air Term. Gowen Fld

2h 11m

ONT4:02 pmOntario

$201

Alaska Airlines

Oct 22

ONT6:02 amOntario

5h 33m

1 stop

BOI12:35 pmBoise Air Term. Gowen Fld

Oct 27

BOI2:51 pmBoise Air Term. Gowen Fld

2h 11m

ONT4:02 pmOntario

$217

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBoise

ONT Ontario - BOI Boise Air Term. Gowen Fld

ONTBOI

Ontario

Wed 9/23

2:30 pm-1:55 pm

1 stop22h 25m

Boise Air Term. Gowen Fld

Mon 9/28

2:50 pm-9:09 am

1 stop19h 19m

$145

OntarioBoise

ONT Ontario - BOI Boise Air Term. Gowen Fld

ONTBOI

Ontario

Thu 9/24

8:00 am-1:55 pm

1 stop4h 55m

Boise Air Term. Gowen Fld

Mon 9/28

2:50 pm-9:09 am

1 stop19h 19m

$150

OntarioBoise

ONT Ontario - BOI Boise Air Term. Gowen Fld

ONTBOI

Ontario

Thu 9/10

5:45 pm-11:40 pm

1 stop4h 55m

Boise Air Term. Gowen Fld

Wed 9/16

7:40 am-10:15 am

1 stop3h 35m

$175

OntarioBoise

ONT Ontario - BOI Boise Air Term. Gowen Fld

ONTBOI

Ontario

Sat 9/12

9:15 am-3:55 pm

1 stop5h 40m

Boise Air Term. Gowen Fld

Sat 9/19

11:35 am-2:15 pm

1 stop3h 40m

$175

Quickest round-trip

OntarioBoise

ONT Ontario - BOI Boise Air Term. Gowen Fld

ONTBOI

Ontario

Sat 10/31

4:42 pm-7:43 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

Tue 11/3

4:48 pm-6:04 pm

Nonstop2h 16m

$197

OntarioBoise

ONT Ontario - BOI Boise Air Term. Gowen Fld

ONTBOI

Ontario

Sat 10/31

4:42 pm-7:43 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

Wed 11/4

4:48 pm-6:04 pm

Nonstop2h 16m

$197

OntarioBoise

ONT Ontario - BOI Boise Air Term. Gowen Fld

ONTBOI

Ontario

Sat 10/17

1:24 pm-6:46 pm

1 stop4h 22m

Boise Air Term. Gowen Fld

Tue 10/20

6:50 pm-11:55 pm

1 stop6h 05m

$207

OntarioBoise

ONT Ontario - BOI Boise Air Term. Gowen Fld

ONTBOI

Ontario

Tue 9/22

5:15 pm-11:58 pm

1 stop5h 43m

Boise Air Term. Gowen Fld

Sat 10/3

1:06 pm-4:35 pm

1 stop4h 29m

$207

OntarioMedford

ONT Ontario - MFR Medford

ONTMFR

Ontario

Thu 9/24

8:24 pm-8:32 am

1 stop12h 08m

Medford

Mon 9/28

3:40 pm-9:09 am

1 stop17h 29m

$231

OntarioPortland

ONT Ontario - PDX Portland

ONTPDX

Ontario

Sun 9/13

6:15 am-11:50 am

1 stop5h 35m

Portland

Thu 9/17

5:45 pm-10:43 pm

1 stop4h 58m

$250

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 Ontario to Oregon

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 Oregon?

The month of February is, on average, the cheapest month to fly to Oregon from Ontario, with most prices found around $226. The month of September is another great option to travel to Oregon, with average flight prices from Ontario averaging around $234.

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

On average, the least expensive day to fly to Oregon from Ontario is on a Friday. momondo users have found tickets for Friday departures for as low as $263. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Oregon is Monday, with ticket prices averaging around $333.

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

According to our data, the cheapest time of day to fly to Oregon is at noon. momondo users have found flights departing from Ontario to Oregon at noon for as low as $231. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Oregon are more costly in the morning, with an average ticket price of $301. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Ontario to Oregon flight route?

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

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

You are more likely to see cheaper flights to Oregon from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Oregon for around $261 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oregon from Ontario for as low as $173 on momondo.

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

There are 4 cabin classes available to choose from on Ontario to Oregon 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 Ontario to Oregon flights?

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

Cheap Ontario to Oregon flight deals and tips

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

Best Price Found	$178
Fastest flight time	1h 51m
Direct flights	Every day
Airports in Oregon	64 airports

The best one-way flight to Oregon from Ontario in the past 72 hours is $178. The best round-trip flight deal from Ontario to Oregon found on momondo in the last 72 hours is $297.

The fastest flight from Ontario to Oregon takes 1h 51m

Direct flights go from Ontario to Oregon every day.

There are 64 airports in Oregon. From Ontario there are direct flights to Portland (PDX), Boise Air Term. Gowen Fld (BOI).

Search flight deals

Frequently asked questions about flying from Ontario to Oregon

When did momondo last update prices for flights from Ontario Airport to Oregon?
Prices for flights from Ontario Airport to Oregon were last updated today.
How many operators does momondo search for flights from Ontario Airport to Oregon?
As of August 2026, there are 6 operators available to choose from for flights from Ontario Airport to Oregon.
How old do you have to be to fly from Ontario Airport to Oregon?
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 Ontario Airport to Oregon.
What documentation or ID do you need to fly to Oregon?
The travel and health documents required for your trip to Oregon can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Oregon. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Ontario to Oregon?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ontario to Oregon is Boeing 737-800 Passenger/BBJ2 (winglets) (29.37% of total bookings). The next most popular plane models are Boeing 737-900 Passenger/BBJ3 (winglets) (11.33%), Boeing 737 MAX 9 (10.63%), and Embraer 175 (9.23%).

Best airlines flying from Ontario to Oregon

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $64	Free Cancellation	Rating 5.6 2,695 reviews	Search Frontier flights
Delta	PriceFrom $78	Free Cancellation	Rating 7.8 8,511 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $88	Free Cancellation	Rating 7.8 2,817 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $157	Free Cancellation	Rating 7.9 12,807 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $166	Free Cancellation	Rating 7.4 10,114 reviews	Search United Airlines flights
Southwest	PriceFrom $186	Free Cancellation	Rating 8.0 4,218 reviews	Search Southwest flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Oregon. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Ontario to Oregon flights to just show those with flexible booking policies.

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

Once all potential Ontario to Oregon flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Ontario to Oregon flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Oregon trip

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Popular cities in Oregon

Flights to New Yorkfrom $85

Flights to Los Angelesfrom $50

Flights to Orlandofrom $48

Flights to Miamifrom $75

Flights to San Franciscofrom $50

Flights to Chicagofrom $58

Flights to Las Vegasfrom $50

Flights to Washington, D.C.from $54

Flights to Bostonfrom $50

Flights to Atlantafrom $36

Flights to Fort Lauderdalefrom $56

Flights to Dallasfrom $53

Cheap flights from Ontario to Oregon from $70

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Oregon departing on 10/22. 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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Delta flights from Ontario to Oregon

Our best Delta deals on Ontario to Oregon flight tickets

Alaska Airlines flights from Ontario to Oregon

Our best Alaska Airlines deals on Ontario to Oregon flight tickets

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See travel insights to Oregon from

How to get the cheapest flight ticket from Ontario to Oregon

What is the cheapest month to fly to Oregon?

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

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

What is the cheapest Ontario to Oregon flight route?

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

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

Can stopping save me money on Ontario to Oregon flights?

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

What airlines fly to Oregon?

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

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

Cheap Ontario to Oregon flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Oregon

Frequently asked questions about flying from Ontario to Oregon

Best airlines flying from Ontario to Oregon

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

Why use momondo?

An easier way to manage your Oregon 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.

Find better results for your trip to Oregon

Popular cities in Oregon

Popular flights according to clicks in the last 7 days on momondo

Ontario flight routes

According to popular flight searches on momondo this year

Oregon flight routes

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