HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Portland to Ontario (PWM - ONT) from $130

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 9/27. 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.
PWM — ONT
Jun 11 — Jun 181
From?
To?
Tue 6/11
Tue 6/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from Portland to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 6, 2024.

Popular in

November

Cheapest in

September

Round-trip from

$238

One-way from

$130
High demand for flights, 47% potential price rise
Search Deals
Best time to find cheap flights, 33% potential price drop
Search Deals
From Portland to Ontario
Search Deals
One-way flight from Portland to Ontario
Search Deals

What is the cheapest day to fly round-trip from Portland, Maine to Ontario?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from Portland, Maine to Ontario?

Travelers have found it’s best to book a flight 37 days in advance to save up to 116% 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 37 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, Maine to Ontario 1-2 weeks in advance for as low as $383, or $715 for flights within the next 24 hours.

What is the cheapest month to fly from Portland, Maine to Ontario?

The best pricing can be found in the month of September. Prices to Ontario from Portland, Maine average $486. You can even find prices in September for less than $486, as users have found deals to Ontario from as low as $252. The month of December appears to be one of the more expensive times to travel to Ontario from Portland, Maine. Flying in the targeted month can save you up to 26%.

What is the cheapest time of day to fly from PWM to ONT?

One of the essential ways to save on airfare from Portland, Maine to Ontario is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 33% on airfare.

Cheap Portland to Ontario flights in June & July 2024

Find cheap flight options from Portland to Ontario specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on June 6, 2024.
These are some of the most attractive deals on flights from Portland to Ontario in 2024. Check back in a little while for more flight options.
Sat 7/66:31 amPWM - ONT
2 stops10h 20mAmerican Airlines
Tue 7/97:18 pmONT - PWM
2 stops12h 35mAmerican Airlines
Deal found 6/5$718
Sat 7/66:31 amPWM - ONT
2 stops10h 20mAmerican Airlines
Tue 7/97:18 pmONT - PWM
2 stops12h 35mAmerican Airlines
Deal found 6/6$762
Sat 7/61:08 pmPWM - ONT
1 stop11h 07mAmerican Airlines
Tue 7/97:18 pmONT - PWM
2 stops12h 35mAmerican Airlines
Deal found 6/5$788
Sat 7/61:08 pmPWM - ONT
1 stop11h 07mAmerican Airlines
Tue 7/97:18 pmONT - PWM
2 stops12h 35mAmerican Airlines
Deal found 6/6$828
Fri 7/263:59 pmPWM - ONT
1 stop10h 01mAmerican Airlines
Sat 8/36:05 amONT - PWM
1 stop8h 40mAmerican Airlines
Deal found 6/4$856
Thu 6/274:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Thu 7/411:59 pmONT - PWM
1 stop9h 19mAmerican Airlines
Deal found 6/5$859
Fri 7/263:59 pmPWM - ONT
1 stop10h 01mAmerican Airlines
Sun 8/411:59 pmONT - PWM
2 stops12h 10mAmerican Airlines
Deal found 6/5$861
Fri 7/261:08 pmPWM - ONT
2 stops13h 41mAmerican Airlines
Fri 8/211:59 pmONT - PWM
2 stops13h 36mAmerican Airlines
Deal found 6/4$866
Sat 7/61:08 pmPWM - ONT
1 stop11h 07mAmerican Airlines
Tue 7/910:36 pmONT - PWM
1 stop10h 41mAmerican Airlines
Deal found 6/5$902

Portland to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Portland and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
These are some of the most attractive deals on flights from Portland to Ontario in 2024. Check back in a little while for more flight options.
Fri 9/61:06 pmPWM - ONT
1 stop12h 15mJetBlue
Fri 9/1311:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 6/5$248
Wed 9/41:06 pmPWM - ONT
1 stop11h 59mJetBlue
Wed 9/1111:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 6/5$274
Mon 9/301:06 pmPWM - ONT
1 stop12h 15mJetBlue
Mon 10/711:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 6/5$300
Mon 9/231:06 pmPWM - ONT
1 stop12h 15mJetBlue
Mon 9/3011:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 6/5$317
Wed 10/21:06 pmPWM - ONT
1 stop11h 59mJetBlue
Wed 10/911:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 6/5$343
Mon 9/91:06 pmPWM - ONT
1 stop12h 15mJetBlue
Fri 9/1311:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 6/6$361
Tue 10/13:35 pmPWM - ONT
1 stop7h 57mUnited Airlines
Tue 10/86:00 amONT - PWM
2 stops14h 59mUnited Airlines
Deal found 6/5$421
Mon 9/91:06 pmPWM - ONT
1 stop12h 15mJetBlue
Mon 9/1611:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 6/5$441
Sat 7/66:31 amPWM - ONT
2 stops10h 20mAmerican Airlines
Tue 7/97:18 pmONT - PWM
2 stops12h 35mAmerican Airlines
Deal found 6/5$718

Portland to Ontario flights leaving soon

Find last-minute flight options from Portland to Ontario for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Check out these flights departing soon from Portland to Ontario. Users should examine the flight details to ensure there are no surprises.
Fri 6/143:20 pmPWM - ONT
1 stop8h 28mUnited Airlines
Mon 6/176:25 pmONT - PWM
1 stop18h 14mUnited Airlines
Deal found 6/5$1,544

One-way flights to Ontario from Portland

Search for one-way flight options from Portland to Ontario. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Take a look at some of the best available options we've come across on one-way flights from Portland to Ontario. For those needing a return trip from Portland, there is a search form available above.
Fri 9/271:06 pmPWM - ONT
1 stop12h 15mJetBlue
Deal found 6/6$130
Sat 10/266:25 pmPWM - ONT
1 stop8h 01mAmerican Airlines
Deal found 6/6$143
Fri 9/275:55 amPWM - ONT
2 stops13h 07mAmerican Airlines
Deal found 6/6$148
Sat 10/2611:40 amPWM - ONT
2 stops13h 49mDelta
Deal found 6/6$153
Fri 7/56:00 amPWM - ONT
2 stops12h 48mAmerican Airlines
Deal found 6/5$184
Sat 8/246:00 amPWM - ONT
2 stops14h 56mUnited Airlines
Deal found 6/5$228
Tue 7/26:05 amPWM - ONT
2 stops19h 40mUnited Airlines
Deal found 6/5$267
Tue 7/23:20 pmPWM - ONT
1 stop8h 28mUnited Airlines
Deal found 6/5$273
Mon 8/1912:25 pmPWM - ONT
2 stops12h 06mUnited Airlines
Deal found 6/4$274

Find flights from Portland to Ontario within your budget

Customize your flight search to find flights from Portland to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$248 - $718

Route

Depart

Return

Price

PortlandOntario

PWM - ONT

PWMONT

Portland

Fri 9/6

1 stop12h 15m

Ontario

Fri 9/13

1 stop9h 35m

$248

PortlandOntario

PWM - ONT

PWMONT

Portland

Wed 9/4

1 stop11h 59m

Ontario

Wed 9/11

1 stop9h 35m

$274

PortlandOntario

PWM - ONT

PWMONT

Portland

Mon 9/30

1 stop12h 15m

Ontario

Mon 10/7

1 stop9h 35m

$300

PortlandOntario

PWM - ONT

PWMONT

Portland

Mon 9/23

1 stop12h 15m

Ontario

Mon 9/30

1 stop9h 35m

$317

PortlandOntario

PWM - ONT

PWMONT

Portland

Wed 10/2

1 stop11h 59m

Ontario

Wed 10/9

1 stop9h 35m

$343

PortlandOntario

PWM - ONT

PWMONT

Portland

Mon 9/9

1 stop12h 15m

Ontario

Fri 9/13

1 stop9h 35m

$361

PortlandOntario

PWM - ONT

PWMONT

Portland

Tue 10/1

1 stop7h 57m

Ontario

Tue 10/8

2 stops14h 59m

$421

PortlandOntario

PWM - ONT

PWMONT

Portland

Mon 9/9

1 stop12h 15m

Ontario

Mon 9/16

1 stop9h 35m

$441

PortlandOntario

PWM - ONT

PWMONT

Portland

Sat 7/6

2 stops10h 20m

Ontario

Tue 7/9

2 stops12h 35m

$718

Flights are sorted by cheapest first

Deals found on 6/5

What is the cheapest day to fly from Portland, Maine to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Portland to Ontario. Price data was last updated on June 2, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Portland, Maine to Ontario flight should consider departing on Wednesday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

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.

Temperature and rainfall in Ontario by month

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

LAX

Temperature

57.2 - 73.4 °F

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated June 6, 2024.
To help decide which airline to fly from Portland to Ontario, see what other customers have to say about American Airlines, United Airlines and JetBlue. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,368 reviews

Overall

8.0

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Delta
8.0
Very good
10,368 reviews
Delta
8.0
Very good
10,368 reviews

Overall

8.0

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

JetBlue
7.6
Good
4,316 reviews
Delta
8.0
Very good
10,368 reviews

Overall

8.0

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

United Airlines
7.4
Good
10,696 reviews
Delta
8.0
Very good
10,368 reviews

Overall

8.0

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

American Airlines
7.3
Good
14,227 reviews
Delta
8.0
Very good
10,368 reviews

Overall

8.0

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.4

Reviews

1 / 10

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

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.

  • Can I find flights from Portland, Maine to Ontario for under $300 on Cheapflights?

    Yes, there are multiple flights from Portland, Maine to Ontario for under $300. The cheapest flight booked recently is on JetBlue for just $248, but on average you can expect to pay $645.

  • Are there last-minute flights available from Portland, Maine to Ontario for under $1,600?

    There are currently 1+ open flights from Portland, Maine to Ontario within the next 7 days for less than $1,600.

  • What are the cheapest airlines flying from Portland, Maine to Ontario round-trip?

    JetBlue, at $248, was found to be the cheapest airline from Portland, Maine to Ontario.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Users have found that JetBlue is 63% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Portland, Maine to Ontario one-way?

    The cheapest airlines for a one-way flight from Portland, Maine to Ontario are JetBlue ($130), American Airlines ($143), and Delta ($153).

  • What does PWM to ONT mean?

    Portland Airport is PWM and Ontario Airport is ONT. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from Portland to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your Portland to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Portland to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter Portland to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Portland to Ontario that allow pets onboard?

    Many airlines flying from Portland to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Portland to Ontario?

    Yes, you can often find last-minute deals on Portland to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Portland, Maine to Ontario flight deals updated?

    The Portland, Maine to Ontario flight deals you see on this page were last updated on 6/6.

  • What is the cheapest month to book a flight from Portland, Maine to Ontario?

    Currently, October is the cheapest month in which you can book a flight from Portland, Maine to Ontario (average of $239). Flying from Portland, Maine to Ontario in July is currently the most expensive (average of $327). 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

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.

Boston to Las Vegas flights
Boston to Los Angeles flights
Boston to San Francisco flights
Boston to San Diego flights
Boston to Ontario flights
Boston to Burbank flights
Boston to Oakland flights
Boston to San Jose flights
Boston to Santa Ana flights
Boston to Sacramento flights
Boston to Reno flights
Portland to Las Vegas flights
Portland to Los Angeles flights
Boston to Fresno flights
Boston to Palm Springs flights
Boston to Santa Barbara flights
Bangor to Las Vegas flights
Portland to San Francisco flights
Bangor to San Francisco flights
Boston to Medford flights
Boston to Long Beach flights
Portland to San Diego flights
Boston to Monterey flights
Bangor to Reno flights
Portland to San Jose flights
Bangor to Los Angeles flights
Portland to Sacramento flights
Boston to Santa Rosa flights
Boston to San Luis Obispo flights
Portland to Santa Ana flights
Bangor to Ontario flights
Bangor to San Diego flights
Portland to Reno flights
Portland to Palm Springs flights
Portland to Oakland flights
Boston to Arcata flights
Boston to Redding flights
Bangor to Sacramento flights
Portland to Burbank flights
Portland to San Luis Obispo flights
Augusta to Las Vegas flights
Portland to Santa Barbara flights
Boston to Yuma flights
Bar Harbor to Las Vegas flights
Boston to Tijuana flights
Portland to Medford flights
Portland to Long Beach flights
Augusta to Los Angeles flights

Top 2 airlines flying from Portland to Ontario

Discover the top 2 airlines that operate flights from Portland to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$261Average$533FlexibilityNo cancel feeOn-time71%
DeltaCheapest$351Average$761FlexibilityNo cancel feeOn-timeN/A
Boston to London flights
New York to Dallas flights
Detroit to Toronto flights
New York to Bermuda flights
Miami to Cuba flights
Miami to Los Angeles flights
San Diego to Chicago flights
Seattle to Hawaii flights
Las Vegas to New York flights
Las Vegas to Los Angeles flights
USA to India flights
Portland, Maine to Porto flights

Search flights from Portland to Ontario by cabin class

Find flights from Portland to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Gaziantep
Flights to Miyakojima Hirara
Flights to Figari-Sud Corse
Flights to Mason City
Flights to Komatsu
Flights to Sendai
Flights to Rhinelander Oneida County
Flights to Constanţa Mihail Kogalniceanu
Flights to Brainerd Crow Wing County
Flights to Reus
Flights to Virac
Flights to Neiva La Marguita
Flights to Pellston Emmet County
Flights to Urumqi
Flights to Bastia Poretta
Flights to Samos
Flights to Hyannis Barnstable
Flights to Provincetown
Flights to Alghero-Fertilia
Flights to Laayoune Hassan I
Flights to Devils Lake
Flights to Vava'u Lupepau'U
Flights to Hakodate
Flights to Edremit/Korfez
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines