What are the cheapest airlines to fly from Portland to Region of Ontario one-way?

The cheapest airlines for a one-way flight from Portland to Region of Ontario are Delta (C$ 217), Air Canada (C$ 243), and United Airlines (C$ 300).

What are the most popular routes from Portland to Region of Ontario?

While some choose either Portland - Montreal Pierre Elliott Trudeau Intl or Portland - Toronto Island, Portland - Toronto Pearson Intl is the most popular route from Portland to Region of Ontario.

What are the cheapest flights from Portland to Region of Ontario?

Looking at all options, your cheapest flight can be booked for C$ 185. While the most popular route (Portland - Toronto Pearson Intl) can be booked for C$ 283 on average our data indicates C$ 295 when flying from Portland to Region of Ontario.

How far in advance should I book a flight from Portland to Region of Ontario?

Travellers have found it’s best to book a flight 20 days in advance to save up to 133% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 20 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Portland to Region of Ontario 1-2 weeks in advance for as low as C$ 493, or C$ 872 for flights within the next 24 hours.

What is the cheapest month to fly from Portland to Region of Ontario?

Flights from Portland to Region of Ontario lean towards being more expensive in March. Prices are generally better when you fly from Portland to Region of Ontario in May, with the cheapest ticket starting at C$ 193.

What airport do you fly from for flights from Portland to Ontario?

Most people fly from Portland (PDX) if they book a flight from Portland to Ontario. Portland is conveniently located just 9.7 km from Portland’s city centre.

Can I find deals for flights from Portland to Ontario that include hotel bookings?

Yes. In addition to deals on Portland to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Portland to Ontario?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Ontario.

Can I find deals for business class flights from Portland to Ontario?

Yes. Cheapflights offers flight deals from Portland to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 107+ Flights from Portland to Ontario

Cheap flight deals from Portland to Ontario

Round-trip from	C$ 266
One-way from	C$ 107
Popular in	March
Cheapest in	May
Average price	C$ 733
Good one-way deal	C$ 263 or less

8/4-22/4
2 total stops
24h 52m total
Portland to Ontario

Search Deals

2/4
1 total stop
16h 28m total
Portland to Ontario

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (C$ 197 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Price to beat on a one-way flight from Portland to Ontario.

Search Deals

Find flight deals from Portland to Ontario

Cheapest flights from Portland to Ontario
Explore the most affordable flight options available from Portland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Tue 8/46:13 p.m.PDX - YYZ

1 stop9h 30mMultiple Airlines

Tue 22/48:00 p.m.YYZ - PDX

1 stop15h 22mMultiple Airlines

Deal found 20/2C$ 266

Mon 3/38:28 p.m.PDX - YTZ

2 stops20h 22mMultiple Airlines

Tue 11/33:25 p.m.YTZ - PDX

2 stops25h 13mMultiple Airlines

Deal found 20/2C$ 419

Sun 6/49:27 p.m.PDX - YOW

2 stops31h 53mMultiple Airlines

Sun 13/46:10 p.m.YOW - PDX

1 stop17h 12mMultiple Airlines

Deal found 20/2C$ 480

Tue 1/411:15 a.m.PDX - YUL

2 stops24h 40mMultiple Airlines

Wed 16/42:35 p.m.YUL - PDX

2 stops20h 47mMultiple Airlines

Deal found 18/2C$ 496

Thu 13/35:40 a.m.PDX - YYZ

1 stop7h 14mDelta

Wed 19/312:15 p.m.YYZ - PDX

1 stop13h 17mDelta

Deal found 20/2C$ 517

Tue 6/53:13 p.m.PDX - YYZ

1 stop16h 38mAmerican Airlines

Sat 17/53:10 p.m.YYZ - PDX

2 stops11h 48mAmerican Airlines

Deal found 20/2C$ 568

Thu 13/35:57 p.m.PDX - YYZ

2 stops12h 53mBritish Airways

Wed 19/36:11 a.m.YYZ - PDX

1 stop18h 03mBritish Airways

Deal found 20/2C$ 591

Mon 17/34:00 p.m.PDX - YYZ

1 stop19h 55mAlaska Airlines

Fri 21/34:20 p.m.YYZ - PDX

1 stop20h 31mAlaska Airlines

Deal found 19/2C$ 594

Wed 5/36:00 a.m.PDX - YUL

1 stop8h 03mAir Canada

Mon 10/32:20 p.m.YUL - PDX

2 stops10h 49mAir Canada

Deal found 20/2C$ 628

Mon 5/51:45 p.m.PDX - YUL

1 stop7h 58mWestJet

Sat 10/56:45 a.m.YUL - PDX

2 stops33h 07mWestJet

Deal found 18/2C$ 642

Mon 16/61:45 p.m.PDX - YYZ

1 stop7h 39mWestJet

Thu 10/76:30 a.m.YYZ - PDX

1 stop9h 37mWestJet

Deal found 19/2C$ 659

Mon 7/411:52 p.m.PDX - YUL

1 stop8h 52mAmerican Airlines

Mon 14/43:44 p.m.YUL - PDX

1 stop10h 03mAmerican Airlines

Deal found 19/2C$ 666

Best flights from Portland to Ontario
Discover carefully curated flight deals from Portland to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 February 2025.

Tue 8/46:13 p.m.PDX - YYZ

1 stop9h 30mMultiple Airlines

Tue 22/48:00 p.m.YYZ - PDX

1 stop15h 22mMultiple Airlines

Deal found 20/2C$ 266

Thu 13/35:40 a.m.PDX - YYZ

1 stop7h 14mDelta

Wed 19/312:15 p.m.YYZ - PDX

1 stop13h 17mDelta

Deal found 20/2C$ 517

Tue 6/53:13 p.m.PDX - YYZ

1 stop16h 38mAmerican Airlines

Sat 17/53:10 p.m.YYZ - PDX

2 stops11h 48mAmerican Airlines

Deal found 20/2C$ 568

Thu 13/35:57 p.m.PDX - YYZ

2 stops12h 53mBritish Airways

Wed 19/36:11 a.m.YYZ - PDX

1 stop18h 03mBritish Airways

Deal found 20/2C$ 591

Mon 17/34:00 p.m.PDX - YYZ

1 stop19h 55mAlaska Airlines

Fri 21/34:20 p.m.YYZ - PDX

1 stop20h 31mAlaska Airlines

Deal found 19/2C$ 594

Wed 5/36:00 a.m.PDX - YUL

1 stop8h 03mAir Canada

Mon 10/32:20 p.m.YUL - PDX

2 stops10h 49mAir Canada

Deal found 20/2C$ 628

Mon 5/51:45 p.m.PDX - YUL

1 stop7h 58mWestJet

Sat 10/56:45 a.m.YUL - PDX

2 stops33h 07mWestJet

Deal found 18/2C$ 642

Mon 17/310:53 p.m.PDX - YUL

1 stop10h 06mUnited Airlines

Mon 24/36:20 p.m.YUL - PDX

1 stop9h 30mUnited Airlines

Deal found 19/2C$ 682

Mon 3/38:28 p.m.PDX - YTZ

2 stops20h 22mMultiple Airlines

Tue 11/33:25 p.m.YTZ - PDX

2 stops25h 13mMultiple Airlines

Deal found 20/2C$ 419

Sun 6/49:27 p.m.PDX - YOW

2 stops31h 53mMultiple Airlines

Sun 13/46:10 p.m.YOW - PDX

1 stop17h 12mMultiple Airlines

Deal found 20/2C$ 480

Tue 1/411:15 a.m.PDX - YUL

2 stops24h 40mMultiple Airlines

Wed 16/42:35 p.m.YUL - PDX

2 stops20h 47mMultiple Airlines

Deal found 18/2C$ 496

Mon 16/61:45 p.m.PDX - YYZ

1 stop7h 39mWestJet

Thu 10/76:30 a.m.YYZ - PDX

1 stop9h 37mWestJet

Deal found 19/2C$ 659

Last-minute flights from Portland to Ontario
Discover last-minute flight deals from Portland to Ontario. Data last updated 20 February 2025 and is based on user searches.

Tue 25/210:16 a.m.PDX - YYZ

1 stop16h 39mMultiple Airlines

Fri 28/21:10 p.m.YYZ - PDX

1 stop21h 50mMultiple Airlines

Deal found 19/2C$ 564

Tue 25/28:24 a.m.PDX - YYZ

2 stops11h 15mAmerican Airlines

Fri 28/212:35 p.m.YYZ - PDX

2 stops11h 23mAmerican Airlines

Deal found 19/2C$ 741

Tue 25/212:59 a.m.PDX - YOW

2 stops20h 10mWestJet

Thu 6/36:15 a.m.YOW - PDX

2 stops20h 36mWestJet

Deal found 18/2C$ 1,095

Wed 26/210:16 a.m.PDX - YOW

2 stops18h 59mMultiple Airlines

Thu 6/35:05 p.m.YOW - PDX

3 stops23h 33mMultiple Airlines

Deal found 18/2C$ 614

Wed 26/26:00 a.m.PDX - YOW

1 stop7h 00mAir Canada

Thu 6/35:00 p.m.YOW - PDX

1 stop8h 39mAir Canada

Deal found 18/2C$ 1,098

Thu 27/210:32 a.m.PDX - YYZ

1 stop25h 23mAlaska Airlines

Sun 2/34:20 p.m.YYZ - PDX

1 stop9h 36mAlaska Airlines

Deal found 20/2C$ 720

Thu 27/28:28 p.m.PDX - YTZ

2 stops21h 02mMultiple Airlines

Sun 2/36:25 p.m.YTZ - PDX

2 stops28h 06mMultiple Airlines

Deal found 20/2C$ 1,085

Fri 28/212:59 a.m.PDX - YYZ

1 stop19h 08mWestJet

Fri 7/36:30 a.m.YYZ - PDX

1 stop14h 02mWestJet

Deal found 20/2C$ 1,114

Sat 1/37:46 p.m.PDX - YYZ

1 stop8h 44mUnited Airlines

Tue 4/34:10 p.m.YYZ - PDX

1 stop7h 55mUnited Airlines

Deal found 18/2C$ 940

Sat 1/33:25 p.m.PDX - YYZ

2 stops11h 35mAir Canada

Fri 7/311:50 p.m.YYZ - PDX

2 stops12h 44mAir Canada

Deal found 20/2C$ 953

Sun 2/312:59 a.m.PDX - YYZ

1 stop9h 45mDelta

Tue 11/312:15 p.m.YYZ - PDX

1 stop13h 17mDelta

Deal found 20/2C$ 709

Mon 3/38:28 p.m.PDX - YTZ

2 stops20h 22mMultiple Airlines

Tue 11/33:25 p.m.YTZ - PDX

2 stops25h 13mMultiple Airlines

Deal found 20/2C$ 419

One-way flights from Portland to Ontario
Search for one-way flight options from Portland to Ontario. Find affordable one-way fares based on user searches. Data last updated 20 February 2025.

Wed 2/411:15 a.m.PDX - YYZ

1 stop16h 28mMultiple Airlines

Deal found 19/2C$ 107

Mon 10/39:18 p.m.PDX - YUL

2 stops48h 21mMultiple Airlines

Deal found 19/2C$ 186

Tue 25/312:59 a.m.PDX - YYZ

1 stop9h 34mDelta

Deal found 19/2C$ 217

Fri 4/49:27 p.m.PDX - YOW

2 stops47h 42mMultiple Airlines

Deal found 19/2C$ 229

Sun 6/410:10 a.m.PDX - YUL

1 stop7h 37mAir Canada

Deal found 19/2C$ 243

Wed 2/46:13 p.m.PDX - YTZ

2 stops13h 27mMultiple Airlines

Deal found 19/2C$ 257

Mon 10/311:38 p.m.PDX - YUL

1 stop10h 12mUnited Airlines

Deal found 19/2C$ 300

Sat 16/86:45 p.m.PDX - YYZ

1 stop19h 45mSun Country Air

Deal found 19/2C$ 308

Fri 23/51:45 p.m.PDX - YYZ

1 stop19h 27mWestJet

Deal found 18/2C$ 322

Thu 15/52:00 p.m.PDX - YUL

1 stop7h 43mDelta

Deal found 19/2C$ 348

Sat 17/55:05 a.m.PDX - YYZ

2 stops9h 30mAmerican Airlines

Deal found 20/2C$ 372

Sat 22/37:07 p.m.PDX - YOW

2 stops18h 59mUnited Airlines

Deal found 19/2C$ 439

Find flights from Portland to Ontario within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 8/4

6:13 p.m.-6:43 a.m.

1 stop9h 30m

Toronto Pearson Intl

Tue 22/4

8:00 p.m.-8:22 a.m.

1 stop15h 22m

C$ 266

PortlandToronto

PDX - YTZ

PDXYTZ

Portland

Mon 3/3

8:28 p.m.-7:50 p.m.

2 stops20h 22m

Toronto Island

Tue 11/3

3:25 p.m.-1:38 p.m.

2 stops25h 13m

C$ 419

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sun 6/4

9:27 p.m.-8:20 a.m.

2 stops31h 53m

Ottawa

Sun 13/4

6:10 p.m.-8:22 a.m.

1 stop17h 12m

C$ 480

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Tue 1/4

11:15 a.m.-2:55 p.m.

2 stops24h 40m

Montreal Pierre Elliott Trudeau Intl

Wed 16/4

2:35 p.m.-8:22 a.m.

2 stops20h 47m

C$ 496

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 13/3

5:40 a.m.-3:54 p.m.

1 stop7h 14m

Toronto Pearson Intl

Wed 19/3

12:15 p.m.-10:32 p.m.

1 stop13h 17m

C$ 517

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 6/5

3:13 p.m.-10:51 a.m.

1 stop16h 38m

Toronto Pearson Intl

Sat 17/5

3:10 p.m.-11:58 p.m.

2 stops11h 48m

C$ 568

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 13/3

5:57 p.m.-9:50 a.m.

2 stops12h 53m

Toronto Pearson Intl

Wed 19/3

6:11 a.m.-9:14 p.m.

1 stop18h 03m

C$ 591

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 17/3

4:00 p.m.-2:55 p.m.

1 stop19h 55m

Toronto Pearson Intl

Fri 21/3

4:20 p.m.-9:51 a.m.

1 stop20h 31m

C$ 594

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Wed 5/3

6:00 a.m.-5:03 p.m.

1 stop8h 03m

Montreal Pierre Elliott Trudeau Intl

Mon 10/3

2:20 p.m.-10:09 p.m.

2 stops10h 49m

C$ 628

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Mon 5/5

1:45 p.m.-12:43 a.m.

1 stop7h 58m

Montreal Pierre Elliott Trudeau Intl

Sat 10/5

6:45 a.m.-12:52 p.m.

2 stops33h 07m

C$ 642

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/2

Showing 1-10 of 34 results

Best time to book a flight from Portland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Portland with our price prediction graph.

Estimated round-trip 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.

Travel insights for flights from Portland to Ontario

Get recent, data-driven insights about flights from Portland to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Portland to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 167). Flying from Portland to Region of Ontario in July is currently the most expensive (average of C$ 258). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to ON?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland to Region of Ontario as you normally would.

Rainfall in Ontario by month

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing Ontario

See what other customers who have flown with Alaska Airlines, Delta and United Airlines from Portland to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,692 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,692 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

8,220 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,766 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

WestJet

7.2

Good

2,801 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

What airport do you fly from for flights from Portland to Ontario?
Most people fly from Portland (PDX) if they book a flight from Portland to Ontario. Portland is conveniently located just 9.7 km from Portland’s city centre.
What are the cheapest airlines to fly from Portland to Region of Ontario one-way?
The cheapest airlines for a one-way flight from Portland to Region of Ontario are Delta (C$ 217), Air Canada (C$ 243), and United Airlines (C$ 300).
What are the most popular routes from Portland to Region of Ontario?
While some choose either Portland - Montreal Pierre Elliott Trudeau Intl or Portland - Toronto Island, Portland - Toronto Pearson Intl is the most popular route from Portland to Region of Ontario.
What are the cheapest flights from Portland to Region of Ontario?
Looking at all options, your cheapest flight can be booked for C$ 185. While the most popular route (Portland - Toronto Pearson Intl) can be booked for C$ 283 on average our data indicates C$ 295 when flying from Portland to Region of Ontario.
Can I find deals for flights from Portland to Ontario that include hotel bookings?
Yes. In addition to deals on Portland to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portland to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Ontario.
Can I find deals for business class flights from Portland to Ontario?
Yes. Cheapflights offers flight deals from Portland to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portland to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 167). Flying from Portland to Region of Ontario in July is currently the most expensive (average of C$ 258). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Portland to Ontario

Portland to Vancouver Intl flights

Portland to Calgary flights

Portland to Pearson Intl flights

Portland to Pierre Elliott Trudeau Intl flights

Boise to Vancouver Intl flights

Boise to Calgary flights

Eugene to Vancouver Intl flights

Redmond to Vancouver Intl flights

Portland to Victoria flights

Boise to Pearson Intl flights

Medford to Vancouver Intl flights

Portland to Ottawa flights

Portland to Halifax flights

Boise to Pierre Elliott Trudeau Intl flights

Portland to Winnipeg flights

Eugene to Pearson Intl flights

Portland to Edmonton flights

Redmond to Pearson Intl flights

Portland to Nanaimo flights

Eugene to Pierre Elliott Trudeau Intl flights

Boise to Edmonton flights

Medford to Pearson Intl flights

Portland to Whitehorse flights

Portland to Regina flights

Portland to Charlottetown flights

Portland to Williams Lake flights

Redmond to Regina flights

Boise to Halifax flights

Portland to Saskatoon flights

Eugene to Edmonton flights

Eugene to Ottawa flights

Portland to Sydney flights

Medford to Pierre Elliott Trudeau Intl flights

Portland to Fredericton flights

Complete your trip

Region of Ontario car rentals

Toronto Pearson Intl Airport car rentals

Ottawa Airport car rentals

Toronto Island Airport car rentals

Hamilton Airport car rentals

London Airport car rentals

Toronto Region of Waterloo Intl Airport car rentals

Thunder Bay Airport car rentals

Sault Ste Marie Airport car rentals

Timmins Airport car rentals

Kingston Airport car rentals

North Bay Airport car rentals

Direct flights to Canada

Top airline flying from Portland to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 210	AverageC$ 700	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

How does Cheapflights help users find flights from Portland to Ontario?

Cheapflights makes it easy to find Portland to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Portland to Ontario?

Cheapflights helps you find that perfect flight to Ontario from Portland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Portland to Ontario with no change fees?

Certainly. Search results for flights to Ontario from Portland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Cheap flights from Portland to Ontario from C$ 107

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portland to Ontario

Keep the following information in mind while searching for Portland to Ontario flight deals. Data was last updated 20 February 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good one-way deal

Find flight deals from Portland to Ontario

Cheapest flights from Portland to OntarioExplore the most affordable flight options available from Portland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Explore the most affordable flight options available from Portland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Find flights from Portland to Ontario within your budget

Best time to book a flight from Portland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Portland with our price prediction graph.

Travel insights for flights from Portland to Ontario

Get recent, data-driven insights about flights from Portland to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Portland to Region of Ontario?

What is the cheapest time of day to fly from PDX to ON?

Find hourly flight availability from Portland to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 February 2025.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

Reviews of airlines servicing Ontario

See what other customers who have flown with Alaska Airlines, Delta and United Airlines from Portland to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Portland to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Portland to Ontario?

What are the cheapest airlines to fly from Portland to Region of Ontario one-way?

What are the most popular routes from Portland to Region of Ontario?

What are the cheapest flights from Portland to Region of Ontario?

Can I find deals for flights from Portland to Ontario that include hotel bookings?

How can I find direct flights from Portland to Ontario?

Can I find deals for business class flights from Portland to Ontario?

What is the cheapest month to book a flight from Portland to Region of Ontario?

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.

Alternative routes for Portland to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Portland to Ontario

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portland to Ontario?

Why should you use Cheapflights to find cheap flight tickets from Portland to Ontario?

Can Cheapflights find flights from Portland to Ontario with no change fees?

Can Cheapflights notify me if prices for flights from Portland to Ontario become cheaper?

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Cheapest flights from Portland to Ontario
Explore the most affordable flight options available from Portland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.