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

Delta, American Airlines, and United Airlines are the most popular carriers operating from Portland to Ontario

Which airlines fly to Region of Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Region of Ontario from Portland, Maine according to our data. Air Canada is the first choice among our users, with 49% of people opting to fly with this airline when travelling to Region of Ontario. Keep in mind that there are 3 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

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

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

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Ontario.

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

The travel and health documents required for your trip to Ontario 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 Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 271 Cheap Flights from Portland to Ontario in 2025/26

1 adult

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Portland, Maine to Ontario

Round-trip

One-way

Last minute

Cheap round-trip flights

3:15 p.m. - 2:40 p.m.PWM-YYZ

23h 25m2 stops

7:35 a.m. - 5:00 p.m.YYZ-PWM

9h 25m1 stop

C$ 555Multiple Airlines

Find Deal

Thu, 6 Nov - Thu, 13 Nov

8:50 a.m. - 6:35 p.m.PWM-YYZ

9h 45m1 stop

10:57 a.m. - 9:47 p.m.YYZ-PWM

10h 50m1 stop

C$ 581American Airlines

Find Deal

Sat, 1 Nov - Sat, 8 Nov

6:01 a.m. - 1:35 p.m.PWM-YUL

7h 34m1 stop

2:29 p.m. - 11:19 p.m.YUL-PWM

8h 50m1 stop

C$ 594Delta

Find Deal

Tue, 4 Nov - Tue, 11 Nov

8:50 a.m. - 6:35 p.m.PWM-YYZ

9h 45m1 stop

12:34 p.m. - 9:47 p.m.YYZ-PWM

9h 13m2 stops

C$ 595American Airlines

Find Deal

Sat, 1 Nov - Sat, 8 Nov

5:40 p.m. - 2:54 p.m.PWM-YYZ

21h 14m1 stop

7:35 a.m. - 5:00 p.m.YYZ-PWM

9h 25m1 stop

C$ 599Multiple Airlines

Find Deal

Thu, 6 Nov - Thu, 13 Nov

9:46 a.m. - 10:10 p.m.PWM-YUL

12h 24m2 stops

4:35 p.m. - 9:06 a.m.YUL-PWM

16h 31m1 stop

C$ 599Multiple Airlines

Find Deal

Mon, 27 Oct - Sun, 2 Nov

5:42 a.m. - 1:35 p.m.PWM-YUL

7h 53m1 stop

2:25 p.m. - 11:09 p.m.YUL-PWM

8h 44m1 stop

C$ 637Delta

Find Deal

Wed, 29 Oct - Wed, 5 Nov

6:14 a.m. - 6:33 p.m.PWM-YYZ

12h 19m1 stop

9:00 p.m. - 2:33 p.m.YYZ-PWM

17h 33m2 stops

C$ 859United Airlines

Find Deal

Tue, 21 Oct - Tue, 21 Oct

3:00 p.m. - 9:24 p.m.PWM-YYZ

6h 24m1 stop

7:40 p.m. - 11:59 p.m.YYZ-PWM

4h 19m1 stop

C$ 933United Airlines

Find Deal

Wed, 5 Nov - Wed, 12 Nov

8:00 a.m. - 4:54 p.m.PWM-YYZ

8h 54m2 stops

6:00 p.m. - 11:20 p.m.YYZ-PWM

5h 20m1 stop

C$ 1,309Air Canada

Find Deal

Fri, 3 Oct - Sun, 5 Oct

American Airlines flights from Portland, Maine to Region of Ontario

Our best American Airlines deals on Portland, Maine to Region of Ontario flight tickets

American Airlines

1 Nov

PWM8:50 a.m.Portland

9h 45m

1 stop

YYZ6:35 p.m.Toronto Pearson Intl

8 Nov

YYZ10:57 a.m.Toronto Pearson Intl

10h 50m

1 stop

PWM9:47 p.m.Portland

C$ 581

Find similar

American Airlines

1 Nov

PWM8:50 a.m.Portland

9h 45m

1 stop

YYZ6:35 p.m.Toronto Pearson Intl

8 Nov

YYZ12:34 p.m.Toronto Pearson Intl

9h 13m

2 stops

PWM9:47 p.m.Portland

C$ 595

Find similar

American Airlines

29 Oct

PWM1:05 p.m.Portland

20h 45m

1 stop

YUL9:50 a.m.Montreal Pierre Elliott Trudeau Intl

5 Nov

YUL7:30 a.m.Montreal Pierre Elliott Trudeau Intl

16h 29m

2 stops

PWM11:59 p.m.Portland

C$ 642

Find similar

United Airlines flights from Portland, Maine to Region of Ontario

Our best United Airlines deals on Portland, Maine to Region of Ontario flight tickets

United Airlines

21 Oct

PWM6:14 a.m.Portland

12h 19m

1 stop

YYZ6:33 p.m.Toronto Pearson Intl

21 Oct

YYZ9:00 p.m.Toronto Pearson Intl

17h 33m

2 stops

PWM2:33 p.m.Portland

C$ 859

Find similar

United Airlines

5 Nov

PWM3:00 p.m.Portland

6h 24m

1 stop

YYZ9:24 p.m.Toronto Pearson Intl

12 Nov

YYZ7:40 p.m.Toronto Pearson Intl

4h 19m

1 stop

PWM11:59 p.m.Portland

C$ 933

Find similar

United Airlines

6 Oct

PWM4:57 p.m.Portland

7h 01m

1 stop

YYZ11:58 p.m.Toronto Pearson Intl

10 Oct

YYZ2:30 p.m.Toronto Pearson Intl

5h 11m

1 stop

PWM7:41 p.m.Portland

C$ 1,016

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Portland, Maine to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Thu 6/11

3:15 p.m.-2:40 p.m.

2 stops23h 25m

Toronto Pearson Intl

Thu 13/11

7:35 a.m.-5:00 p.m.

1 stop9h 25m

C$ 555

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sat 1/11

8:50 a.m.-6:35 p.m.

1 stop9h 45m

Toronto Pearson Intl

Sat 8/11

10:57 a.m.-9:47 p.m.

1 stop10h 50m

C$ 581

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Tue 4/11

6:01 a.m.-1:35 p.m.

1 stop7h 34m

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

2:29 p.m.-11:19 p.m.

1 stop8h 50m

C$ 594

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sat 1/11

8:50 a.m.-6:35 p.m.

1 stop9h 45m

Toronto Pearson Intl

Sat 8/11

12:34 p.m.-9:47 p.m.

2 stops9h 13m

C$ 595

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Thu 6/11

5:40 p.m.-2:54 p.m.

1 stop21h 14m

Toronto Pearson Intl

Thu 13/11

7:35 a.m.-5:00 p.m.

1 stop9h 25m

C$ 599

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Mon 27/10

9:46 a.m.-10:10 p.m.

2 stops12h 24m

Montreal Pierre Elliott Trudeau Intl

Sun 2/11

4:35 p.m.-9:06 a.m.

1 stop16h 31m

C$ 599

PortlandMontreal

PWM - YUL

PWMYUL

Portland

Wed 29/10

5:42 a.m.-1:35 p.m.

1 stop7h 53m

Montreal Pierre Elliott Trudeau Intl

Wed 5/11

2:25 p.m.-11:09 p.m.

1 stop8h 44m

C$ 637

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Tue 21/10

6:14 a.m.-6:33 p.m.

1 stop12h 19m

Toronto Pearson Intl

Tue 21/10

9:00 p.m.-2:33 p.m.

2 stops17h 33m

C$ 859

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Wed 5/11

3:00 p.m.-9:24 p.m.

1 stop6h 24m

Toronto Pearson Intl

Wed 12/11

7:40 p.m.-11:59 p.m.

1 stop4h 19m

C$ 933

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Fri 3/10

8:00 a.m.-4:54 p.m.

2 stops8h 54m

Toronto Pearson Intl

Sun 5/10

6:00 p.m.-11:20 p.m.

1 stop5h 20m

C$ 1,309

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 Portland, Maine to Region of Ontario

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

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

In general, March is the cheapest month to fly from Portland, Maine to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 497. If you are unable to visit Region of Ontario during the month of March, then departing from Portland, Maine during the month January is also very affordable. Most momondo users find prices during this month for around C$ 550.

Cheap Portland, Maine to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Region of Ontario

Direct flights	None

There are no direct flights from Portland, Maine to Region of Ontario. There are no popular flight routes from Portland, Maine to Region of Ontario.

Search flight deals

When did momondo last update prices for flights from Portland Airport to Ontario?
Prices for flights from Portland Airport to Ontario were last updated today.
How old do you have to be to fly from Portland Airport to Ontario?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The travel and health documents required for your trip to Ontario 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 Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Ontario. momondo saves you time and could save you money on your trip.

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

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

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

momondo helps you find the best flight between Portland and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Ontario from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Region of Ontario 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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Thu 23/10

Thu 30/10

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ontario

Popular Cities in Ontario

Flights to Torontofrom C$ 104

Flights to Vancouverfrom C$ 84

Flights to Montrealfrom C$ 232

Flights to Calgaryfrom C$ 83

Flights to Ottawafrom C$ 192

Flights to Winnipegfrom C$ 123

Flights to Halifaxfrom C$ 123

Flights to Kelownafrom C$ 95

Flights to Saskatoonfrom C$ 160

Flights to Reginafrom C$ 164

Flights to St. John'sfrom C$ 177

Flights to Québec Cityfrom C$ 273

Cheap flights from Portland, Maine to Ontario from C$ 271

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Ontario departing on 6/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Portland, Maine to Ontario

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

American Airlines flights from Portland, Maine to Region of Ontario

Our best American Airlines deals on Portland, Maine to Region of Ontario flight tickets

United Airlines flights from Portland, Maine to Region of Ontario

Our best United Airlines deals on Portland, Maine to Region of Ontario flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Portland, Maine to Ontario that are best for you.

See travel insights to Ontario from

How to get the cheapest flight ticket from Portland, Maine to Region of Ontario

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

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

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

Delta, American Airlines, and United Airlines are the most popular carriers operating from Portland to Ontario

Which airlines fly to Region of Ontario?

Cheap Portland, Maine to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Region of Ontario

Direct flights

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

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

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

Why use momondo?

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

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

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

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

An easier way to manage your Region of Ontario 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 Ontario

Popular Cities in Ontario

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