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Niagara Falls

$340+ Cheap flights from Portland, ME (PWM) to Niagara Falls, ON, Canada

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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — YYZ
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Portland to Niagara Falls

Cheapest flights from Portland to Niagara Falls
Explore the most affordable flight options available from Portland to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2111:58 amPWM - YYZ
1 stop11h 51mMultiple Airlines
Tue 12/237:10 amYYZ - PWM
1 stop27h 26mMultiple Airlines
Deal found 12/17$745
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/247:01 pmPWM - YYZ
1 stop4h 19mUnited Airlines
Wed 12/317:30 amYYZ - PWM
1 stop6h 09mUnited Airlines
Deal found 12/16$846
This American Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/241:22 pmPWM - YYZ
1 stop20h 54mAmerican Airlines
Fri 12/266:15 pmYYZ - PWM
1 stop4h 40mAmerican Airlines
Deal found 12/16$935
This WestJet deal was found by Cheapflights users on 12/16. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 amPWM - YYZ
2 stops25h 25mWestJet
Wed 12/3111:15 pmYYZ - PWM
2 stops13h 02mWestJet
Deal found 12/16$1,859

Find flight deals from Portland to Niagara Falls

Keep the following information in mind while searching for Portland to Niagara Falls flight deals. Data was last updated December 18, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$375
(Kiwi.com)

One-way from

$340
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$367
Provider with most accurate pricing for Boston Logan Intl-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Toronto (YTO) flights.
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From Portland to Niagara Falls
Search Deals
One-way flight from Portland to Niagara Falls
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Niagara Falls 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 December 18, 2025.
Use the filters below to find and compare flights from Portland to Niagara Falls that are best for you.

Fly from

Portland

Fly to

Niagara Falls

Route

Depart

Return

Price

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Sat 1/31

5:30 am-7:00 pm

2 stops13h 30m

Toronto Pearson Intl

Sat 2/7

10:30 am-9:37 pm

2 stops11h 07m

$395

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Fri 1/23

5:20 am-4:35 pm

1 stop11h 15m

Toronto Pearson Intl

Sun 1/25

5:15 pm-12:06 pm

1 stop18h 51m

$422

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Tue 2/10

6:00 am-10:51 pm

1 stop16h 51m

Toronto Pearson Intl

Sun 2/15

7:50 am-11:20 pm

1 stop15h 30m

$426

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Thu 2/12

6:00 am-5:47 pm

1 stop11h 47m

Toronto Pearson Intl

Sun 2/15

7:50 am-11:20 pm

1 stop15h 30m

$426

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Tue 2/10

12:43 pm-10:51 pm

1 stop10h 08m

Toronto Pearson Intl

Thu 2/19

6:00 am-12:18 am

1 stop18h 18m

$426

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Thu 2/12

6:00 am-4:18 pm

1 stop10h 18m

Toronto Pearson Intl

Wed 2/18

12:05 pm-12:18 am

1 stop12h 13m

$426

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Tue 2/10

6:00 am-8:26 pm

1 stop14h 26m

Toronto Pearson Intl

Wed 2/18

12:05 pm-12:18 am

1 stop12h 13m

$426

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Wed 2/11

5:59 pm-1:24 pm

1 stop19h 25m

Toronto Pearson Intl

Wed 2/18

5:10 pm-11:18 am

1 stop18h 08m

$432

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Wed 12/31

5:48 am-11:51 am

1 stop6h 03m

$340

PortlandToronto

PWM - YYZ

PWMYYZ

Portland

Wed 12/31

7:30 pm-11:46 pm

1 stop4h 16m

$346

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 13 results
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Best time to book a flight from Portland to Niagara Falls

Have a flexible travel schedule? Discover the best time to fly to Niagara Falls 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.

Cheapflights Insights

Everything you need to know about your flight from Portland to Niagara Falls

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

Currently, April is the cheapest month in which you can book a flight from Portland, Maine to Niagara Falls (average of $116). Flying from Portland, Maine to Niagara Falls in August is currently the most expensive (average of $232). 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 PWM to NI4?

Find hourly flight availability from Portland to Niagara Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s optimal to fly from Portland, Maine to Niagara Falls in the afternoon. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the morning.

Related info for your journey

Find useful and relevant information for your journey from Portland to Niagara Falls. 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 Niagara Falls?

    Located just 2.9 mi from the city center, Portland is the airport most travelers will use when flying to Niagara Falls from Portland. Booking flights from Portland (PWM) to Niagara Falls should be relatively easy as there are 0 daily outbound flights to Niagara Falls from 0 different airlines.

  • How long is the flight from Portland, Maine to Niagara Falls?

    There are many flights that can get you from Portland, Maine to Niagara Falls in 13h 30m. Fly via American Airlines to get the fastest option. There are 465 mi between Portland, Maine and Niagara Falls.

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

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

  • How can I find direct flights from Portland to Niagara Falls?

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Portland, Maine to Niagara Falls (average of $116). Flying from Portland, Maine to Niagara Falls in August is currently the most expensive (average of $232). 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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