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

Delta, at $684, was found to be the cheapest airline from Portland, Maine to Ontario.Alternate airlines to your destination round-trip include American Airlines and United Airlines.

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 ($148), and United Airlines ($361).

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 6/2.

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 $238). Flying from Portland, Maine to Ontario in July is currently the most expensive (average of $328). 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.

Can I find flights from Portland, Maine to Ontario for under $700 on Cheapflights?

Yes, there are multiple flights from Portland, Maine to Ontario for under $700. The cheapest flight booked recently is on Delta for just $684, but on average you can expect to pay $914.

Are there last-minute flights available from Portland, Maine to Ontario for under $500?

There are currently 3+ open flights from Portland, Maine to Ontario within the next 7 days for less than $500.

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.

Flights from Portland, ME to Ontario, CA from $130

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Cheap flight deals from Portland to Ontario

Popular in	November
Cheapest in	September
Average price	$735
Round-trip from	$238

High demand for flights, 47% potential price rise

Search Deals

Best time to find cheap flights, 33% potential price drop

Search Deals

Average for round-trip flights in June 2024

Search Deals

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 American Airlines flights from Portland to Ontario

Take a look at some of the lowest-priced American Airlines flights heading from Portland to Ontario. Make sure to double check the flight details before booking.

Tue 6/114:00 pmPWM - ONT

1 stop9h 59mAmerican Airlines

Sat 6/157:26 pmONT - PWM

2 stops11h 56mAmerican Airlines

Deal found 6/1$429

Tue 6/114:13 pmPWM - ONT

2 stops10h 46mAmerican Airlines

Sat 6/157:26 pmONT - PWM

2 stops11h 56mAmerican Airlines

Deal found 6/1$434

Tue 6/114:00 pmPWM - ONT

1 stop9h 59mAmerican Airlines

Sat 6/1510:45 pmONT - PWM

1 stop10h 29mAmerican Airlines

Deal found 6/1$461

Sat 7/61:08 pmPWM - ONT

1 stop11h 07mAmerican Airlines

Tue 7/97:18 pmONT - PWM

2 stops13h 16mAmerican Airlines

Deal found 6/1$708

Sat 7/66:31 amPWM - ONT

2 stops10h 20mAmerican Airlines

Tue 7/97:18 pmONT - PWM

2 stops13h 16mAmerican Airlines

Deal found 6/1$713

Sat 7/61:08 pmPWM - ONT

1 stop11h 07mAmerican Airlines

Tue 7/97:18 pmONT - PWM

2 stops13h 16mAmerican Airlines

Deal found 6/2$748

Sat 7/66:31 amPWM - ONT

2 stops10h 20mAmerican Airlines

Tue 7/97:18 pmONT - PWM

2 stops12h 35mAmerican Airlines

Deal found 6/2$753

Sat 7/61:08 pmPWM - ONT

1 stop11h 07mAmerican Airlines

Tue 7/910:36 pmONT - PWM

1 stop10h 41mAmerican Airlines

Deal found 6/1$822

Mon 7/14:00 pmPWM - ONT

1 stop9h 59mAmerican Airlines

Mon 7/810:38 pmONT - PWM

1 stop10h 39mAmerican Airlines

Deal found 6/1$856

Cheap United Airlines flights from Portland to Ontario

To aid your search, here are some of the cheapest United Airlines flights we've found from Portland to Ontario. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

Fri 8/93:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Wed 8/145:10 amONT - PWM

1 stop7h 33mUnited Airlines

Deal found 5/31$929

Wed 7/103:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Wed 7/175:10 amONT - PWM

1 stop7h 33mUnited Airlines

Deal found 6/1$968

Wed 6/193:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Fri 6/215:15 amONT - PWM

1 stop7h 24mUnited Airlines

Deal found 6/2$1,118

Mon 6/173:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Thu 6/205:15 amONT - PWM

1 stop7h 24mUnited Airlines

Deal found 6/1$1,218

Mon 7/83:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Mon 7/155:10 amONT - PWM

1 stop7h 33mUnited Airlines

Deal found 6/1$1,262

Mon 6/243:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Sun 6/305:20 amONT - PWM

1 stop7h 23mUnited Airlines

Deal found 6/2$1,343

Cheap Portland to Ontario flights in June & July 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.

Tue 6/114:00 pmPWM - ONT

1 stop9h 59mAmerican Airlines

Sat 6/157:26 pmONT - PWM

2 stops11h 56mAmerican Airlines

Deal found 6/1$429

Tue 6/114:13 pmPWM - ONT

2 stops10h 46mAmerican Airlines

Sat 6/157:26 pmONT - PWM

2 stops11h 56mAmerican Airlines

Deal found 6/1$434

Tue 6/114:00 pmPWM - ONT

1 stop9h 59mAmerican Airlines

Sat 6/1510:45 pmONT - PWM

1 stop10h 29mAmerican Airlines

Deal found 6/1$461

Thu 6/63:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Fri 6/75:15 amONT - PWM

1 stop7h 24mUnited Airlines

Deal found 6/1$756

Mon 6/1711:35 amPWM - ONT

2 stops13h 34mAmerican Airlines

Thu 6/2010:45 pmONT - PWM

1 stop10h 29mAmerican Airlines

Deal found 6/1$861

Wed 6/1911:35 amPWM - ONT

2 stops13h 34mAmerican Airlines

Fri 6/2110:54 amONT - PWM

2 stops10h 58mAmerican Airlines

Deal found 6/2$866

Mon 6/174:00 pmPWM - ONT

1 stop9h 59mAmerican Airlines

Fri 6/2110:45 pmONT - PWM

1 stop10h 29mAmerican Airlines

Deal found 6/1$905

Wed 6/193:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Fri 6/215:15 amONT - PWM

1 stop7h 24mUnited Airlines

Deal found 6/2$1,118

Mon 6/173:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Thu 6/205:15 amONT - PWM

1 stop7h 24mUnited Airlines

Deal found 6/1$1,218

Portland to Ontario 2024 flight deals

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.

Tue 6/114:00 pmPWM - ONT

1 stop9h 59mAmerican Airlines

Sat 6/157:26 pmONT - PWM

2 stops11h 56mAmerican Airlines

Deal found 6/1$429

Tue 6/114:13 pmPWM - ONT

2 stops10h 46mAmerican Airlines

Sat 6/157:26 pmONT - PWM

2 stops11h 56mAmerican Airlines

Deal found 6/1$434

Tue 6/114:00 pmPWM - ONT

1 stop9h 59mAmerican Airlines

Sat 6/1510:45 pmONT - PWM

1 stop10h 29mAmerican Airlines

Deal found 6/1$461

Thu 7/41:38 pmPWM - ONT

1 stop9h 06mDelta

Wed 7/106:50 amONT - PWM

1 stop12h 10mDelta

Deal found 6/1$684

Sat 7/61:08 pmPWM - ONT

1 stop11h 07mAmerican Airlines

Tue 7/97:18 pmONT - PWM

2 stops13h 16mAmerican Airlines

Deal found 6/1$708

Sat 7/66:31 amPWM - ONT

2 stops10h 20mAmerican Airlines

Tue 7/97:18 pmONT - PWM

2 stops13h 16mAmerican Airlines

Deal found 6/1$713

Sat 7/61:08 pmPWM - ONT

1 stop11h 07mAmerican Airlines

Tue 7/97:18 pmONT - PWM

2 stops13h 16mAmerican Airlines

Deal found 6/2$748

Sat 7/66:31 amPWM - ONT

2 stops10h 20mAmerican Airlines

Tue 7/97:18 pmONT - PWM

2 stops12h 35mAmerican Airlines

Deal found 6/2$753

Thu 6/63:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Fri 6/75:15 amONT - PWM

1 stop7h 24mUnited Airlines

Deal found 6/1$756

Portland to Ontario flights leaving soon

Check out these flights departing soon from Portland to Ontario. Users should examine the flight details to ensure there are no surprises.

Tue 6/114:00 pmPWM - ONT

1 stop9h 59mAmerican Airlines

Sat 6/157:26 pmONT - PWM

2 stops11h 56mAmerican Airlines

Deal found 6/1$429

Tue 6/114:13 pmPWM - ONT

2 stops10h 46mAmerican Airlines

Sat 6/157:26 pmONT - PWM

2 stops11h 56mAmerican Airlines

Deal found 6/1$434

Tue 6/114:00 pmPWM - ONT

1 stop9h 59mAmerican Airlines

Sat 6/1510:45 pmONT - PWM

1 stop10h 29mAmerican Airlines

Deal found 6/1$461

One-way flights to Ontario from Portland

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 6/1$130

Fri 9/275:55 amPWM - ONT

2 stops13h 07mAmerican Airlines

Deal found 6/1$148

Tue 7/236:05 amPWM - ONT

2 stops17h 43mUnited Airlines

Deal found 6/2$361

Wed 8/143:20 pmPWM - ONT

1 stop8h 28mUnited Airlines

Deal found 6/1$378

Thu 6/209:45 amPWM - ONT

2 stops15h 42mUnited Airlines

Deal found 6/1$383

Wed 6/122:24 pmPWM - ONT

1 stop10h 45mJetBlue

Deal found 6/2$386

Wed 6/267:15 pmPWM - ONT

2 stops18h 48mUnited Airlines

Deal found 6/1$415

Thu 8/11:26 pmPWM - ONT

1 stop9h 01mDelta

Deal found 6/1$419

Thu 8/81:09 pmPWM - ONT

1 stop10h 14mAmerican Airlines

Deal found 5/31$427

Find flights from Portland to Ontario within your budget

Fly from

Fly to

Budget

$684 - $1,118

Route

Depart

Return

Price

PortlandOntario

PWM - ONT

PWMONT

Portland

Thu 7/4

1 stop9h 06m

Ontario

Wed 7/10

1 stop12h 10m

$684

PortlandOntario

PWM - ONT

PWMONT

Portland

Sat 7/6

1 stop11h 07m

Ontario

Tue 7/9

2 stops13h 16m

$708

PortlandOntario

PWM - ONT

PWMONT

Portland

Sat 7/6

2 stops10h 20m

Ontario

Tue 7/9

2 stops13h 16m

$713

PortlandOntario

PWM - ONT

PWMONT

Portland

Sat 7/6

1 stop11h 07m

Ontario

Tue 7/9

2 stops13h 16m

$748

PortlandOntario

PWM - ONT

PWMONT

Portland

Sat 7/6

2 stops10h 20m

Ontario

Tue 7/9

2 stops12h 35m

$753

PortlandOntario

PWM - ONT

PWMONT

Portland

Sat 7/6

1 stop11h 07m

Ontario

Tue 7/9

1 stop10h 41m

$822

PortlandOntario

PWM - ONT

PWMONT

Portland

Fri 8/9

1 stop8h 28m

Ontario

Wed 8/14

1 stop7h 33m

$929

PortlandOntario

PWM - ONT

PWMONT

Portland

Wed 7/10

1 stop8h 28m

Ontario

Wed 7/17

1 stop7h 33m

$968

PortlandOntario

PWM - ONT

PWMONT

Portland

Wed 6/19

1 stop8h 28m

Ontario

Fri 6/21

1 stop7h 24m

$1,118

Flights are sorted by cheapest first

Deals found on 6/1

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

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

Temperature and rainfall in Ontario by month

LAX Temperature	57.2 - 73.4 °F

LAX

Temperature

57.2 - 73.4 °F

Reviews of airlines servicing Ontario

To help decide which airline to fly from Portland to Ontario, see what other customers have to say about American Airlines and United Airlines. 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

10,402 reviews

Check prices

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

10,402 reviews

Delta

8.0

Very good

10,402 reviews

Check prices

Reviews

1 / 10

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

JetBlue

7.6

Good

4,336 reviews

Delta

8.0

Very good

10,402 reviews

Check prices

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

10,755 reviews

Delta

8.0

Very good

10,402 reviews

Check prices

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

14,260 reviews

Delta

8.0

Very good

10,402 reviews

Check prices

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

Can I find flights from Portland, Maine to Ontario for under $700 on Cheapflights?
Yes, there are multiple flights from Portland, Maine to Ontario for under $700. The cheapest flight booked recently is on Delta for just $684, but on average you can expect to pay $914.
Are there last-minute flights available from Portland, Maine to Ontario for under $500?
There are currently 3+ open flights from Portland, Maine to Ontario within the next 7 days for less than $500.
What are the cheapest airlines flying from Portland, Maine to Ontario round-trip?
Delta, at $684, was found to be the cheapest airline from Portland, Maine to Ontario.Alternate airlines to your destination round-trip include American Airlines and United Airlines.
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 ($148), and United Airlines ($361).
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 6/2.
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 $238). Flying from Portland, Maine to Ontario in July is currently the most expensive (average of $328). 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
See prices for flight routes from nearby airports that may be better suited for you.

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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.

Ontario car rentals

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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 2, 2024.

Top 2 airlines flying from Portland to Ontario

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$261	Average$533	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Delta	Cheapest$351	Average$761	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

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

Cheapflights helps you search for flights from Portland to Ontario via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portland to Ontario.

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

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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.

Cheap flight deals from Portland to Ontario

Popular in

Cheapest in

Average price

Round-trip from

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

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

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

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

Cheap American Airlines flights from Portland to Ontario

Take a look at some of the lowest-priced American Airlines flights heading from Portland to Ontario. Make sure to double check the flight details before booking.

Cheap United Airlines flights from Portland to Ontario

To aid your search, here are some of the cheapest United Airlines flights we've found from Portland to Ontario. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

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 2,807,690 searches. Prices were last updated on June 2, 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.

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 2,807,690 searches. Data last updated June 2, 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.

Portland to Ontario flights leaving soon

Check out these flights departing soon from Portland to Ontario. Users should examine the flight details to ensure there are no surprises.

One-way flights to Ontario from Portland

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.

Find flights from Portland to Ontario within your budget

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.

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.

Temperature and rainfall in Ontario by month

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

Reviews of airlines servicing Ontario

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 $700 on Cheapflights?

Are there last-minute flights available from Portland, Maine to Ontario for under $500?

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

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

What does PWM to ONT mean?

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

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

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?

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

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

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

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

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Alternative routes for Portland to Ontario
See prices for flight routes from nearby airports that may be better suited for you.