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$111+ Cheap flights from Ontario to Portland, ME (ONT - PWM)

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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PWM
Jan 10 — Jan 171
Fri 1/10
Fri 1/17
1 adult, Economy
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Cheap flight deals from Ontario to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Portland (PWM). 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 January 5, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(American Airlines)

One-way from

$111
(Trip.com)

Popular in

April

Cheapest in

January

Average price

$246
Provider with most accurate pricing for Ontario-Portland flight deals.
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Provider most trusted by Cheapflights users for Ontario-Portland flights.
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From Ontario to Portland
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One-way flight from Ontario to Portland
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High demand for flights, 24% potential price rise
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Best time to find cheap flights, 15% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Ontario to Portland

Cheapest flights from Ontario to Portland
Explore the most affordable flight options available from Ontario to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 5, 2025.

This American Airlines deal was found by Cheapflights users on 1/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/46:00 amONT - PWM
2 stops13h 30mAmerican Airlines
Fri 2/75:44 amPWM - ONT
2 stops15h 53mAmerican Airlines
Deal found 1/5$317
This United Airlines deal was found by Cheapflights users on 1/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/185:10 amONT - PWM
2 stops14h 20mUnited Airlines
Fri 1/246:00 amPWM - ONT
2 stops14h 57mUnited Airlines
Deal found 1/3$328
This Delta deal was found by Cheapflights users on 1/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/211:00 pmONT - PWM
1 stop7h 51mDelta
Sat 1/255:34 amPWM - ONT
1 stop9h 16mDelta
Deal found 1/5$360
This Southwest deal was found by Cheapflights users on 1/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/287:50 pmONT - PWM
2 stops13h 20mSouthwest
Mon 3/31:25 pmPWM - ONT
2 stops12h 40mSouthwest
Deal found 1/3$389
This Alaska Airlines deal was found by Cheapflights users on 1/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/185:44 pmONT - PWM
3 stops25h 50mAlaska Airlines
Fri 1/244:00 pmPWM - ONT
3 stops21h 34mAlaska Airlines
Deal found 1/3$612

Find flights from Ontario to Portland within your budget

Customize your flight search to find flights from Ontario to Portland 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 2,558,603 searches. Data last updated January 5, 2025.

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Depart

Return

Price

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 2/4

6:00 am-10:30 pm

2 stops13h 30m

Portland

Fri 2/7

5:44 am-6:37 pm

2 stops15h 53m

$317

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Sat 1/18

5:10 am-10:30 pm

2 stops14h 20m

Portland

Fri 1/24

6:00 am-5:57 pm

2 stops14h 57m

$328

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 1/21

1:00 pm-11:51 pm

1 stop7h 51m

Portland

Sat 1/25

5:34 am-11:50 am

1 stop9h 16m

$360

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Fri 2/28

7:50 pm-12:10 pm

2 stops13h 20m

Portland

Mon 3/3

1:25 pm-11:05 pm

2 stops12h 40m

$389

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Sat 1/18

5:44 pm-10:34 pm

3 stops25h 50m

Portland

Fri 1/24

4:00 pm-10:34 am

3 stops21h 34m

$612

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 2/11

7:45 am-5:38 pm

2 stops30h 53m

$111

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 2/4

1:00 pm-11:55 pm

1 stop7h 55m

$154

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 2/18

3:30 pm-10:42 am

2 stops16h 12m

$179

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 4/22

6:00 am-10:42 pm

2 stops13h 42m

$440

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Compare providers for flights from Ontario to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Portland in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Ontario 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 Ontario to Portland

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

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Portland, Maine (average of $296). Flying from Ontario to Portland, Maine in April is currently the most expensive (average of $498). 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 ONT to PWM?

Find hourly flight availability from Ontario to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 5, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Portland, Maine in the afternoon. If you’re flexible enough to do this you can expect to save up to 36% on your trip compared to booking a flight in the morning.

Rainfall in Portland by month

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

In terms of precipitation, rainfall in Portland, Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Portland, Maine when rainfall is around 2.9 in.

Temperature in Portland by month

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

If weather is an important factor for your trip to Portland, Maine, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated January 5, 2025.
Read reviews from past customers who have flown Delta, American Airlines and United Airlines from Ontario to Portland. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,671 reviews

Food

7.2

Overall

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,671 reviews
Southwest
8.1
Very good
4,671 reviews

Food

7.2

Overall

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,611 reviews
Southwest
8.1
Very good
4,671 reviews

Food

7.2

Overall

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,517 reviews
Southwest
8.1
Very good
4,671 reviews

Food

7.2

Overall

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
8,945 reviews
Southwest
8.1
Very good
4,671 reviews

Food

7.2

Overall

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,671 reviews

Food

7.2

Overall

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

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

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

    Currently priced at $317, American Airlines will fly you from Ontario to Portland, Maine and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $328 and $360, respectively. American Airlines is 48% cheaper than the average price of flights available within the next 90 days to this destination.

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

    $111 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $154 and $179, respectively.

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

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

  • How can I find direct flights from Ontario to Portland?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Portland 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 Ontario to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Portland, Maine (average of $296). Flying from Ontario to Portland, Maine in April is currently the most expensive (average of $498). 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.

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Top 4 airlines flying from Ontario to Portland

Discover the top 4 airlines that operate flights from Ontario to Portland. 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 2,558,603 searches. Data last updated January 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$259Average$349FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$327Average$513FlexibilityNo cancel feeOn-time71%
DeltaCheapest$361Average$784FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$451Average$867FlexibilityNo cancel feeOn-time69%
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