How long is the flight from Portsmouth to Niagara Falls?

British Airways and Delta can get you from Portsmouth to Niagara Falls in just under 11h 10m. Your travel time can differ by up to 20h 10m. Portsmouth and Niagara Falls are separated by a distance of 3523 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in Niagara Falls ranges from 51.0 - 83.0 inches per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Niagara Falls when rainfall is around 51.0 mm.

If weather is an important factor for your trip to Niagara Falls, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

What are the cheapest flights from Portsmouth to Niagara Falls?

On average you can expect to pay £1,119 for a flight from Portsmouth to Niagara Falls. The cheapest flight overall is £350 while the most popular route, (Southampton Eastleigh - Toronto Pearson Intl) is currently priced at £571.

What are the most reliable airlines from Portsmouth to Niagara Falls?

No one likes to see their flight delayed. When booking a flight from Portsmouth to Niagara Falls consider choosing Thai Airways (77%), KLM (77%) or Air France (77%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Portsmouth to Niagara Falls?

Consider American Airlines, Air Canada or Air France when booking your flight. These represent the most popular airlines when flying from Portsmouth to Niagara Falls.

How far in advance should I book a flight from Portsmouth to Niagara Falls?

Travelers have found it’s best to book a flight 59 days in advance to save up to 23% 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 59 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 Portsmouth to Niagara Falls 1-2 weeks in advance for as low as £418, or £506 for flights within the next 24 hours.

What is the cheapest month to fly from Portsmouth to Niagara Falls?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Niagara Falls. Flights to Niagara Falls from Portsmouth in February are about £417 on average during February, but can be found for as low as £272.

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

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

How can I find direct flights from Portsmouth to Niagara Falls?

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

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

Yes. Cheapflights offers flight deals from Portsmouth 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.

£308+ Cheap Flights from Portsmouth to Niagara Falls

Cheap flight deals from Portsmouth to Niagara Falls

Round-trip from	£616
One-way from	£308
Popular in	December
Cheapest in	February
Average price	£381

British Airways
10/10-18/10
2 total stops
21h 25m total
Portsmouth to Niagara Falls

Search Deals

18/10
3 total stops
57h 51m total
Portsmouth to Niagara Falls

Search Deals

Highest demand for flights based on searches. 3% potential increase in price (£11 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Portsmouth to Niagara Falls

Cheapest flights from Portsmouth to Niagara Falls
Explore the most affordable flight options available from Portsmouth to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Fri 10/1009:40SOU - YYZ

1 stop11h 10mBritish Airways

Sat 18/1017:20YYZ - SOU

1 stop10h 15mBritish Airways

Deal found 11/9£616

Fri 10/1009:40SOU - YYZ

1 stop11h 10mBritish Airways

Fri 17/1015:10YYZ - SOU

2 stops19h 35mBritish Airways

Deal found 11/9£637

Sat 20/909:20SOU - YYZ

2 stops18h 36mDelta

Wed 1/722:10YYZ - SOU

1 stop29h 35mDelta

Deal found 11/9£645

Sun 21/909:20SOU - YYZ

1 stop15h 35mDelta

Sat 6/616:45YYZ - SOU

1 stop11h 00mDelta

Deal found 11/9£650

Tue 23/917:35SOU - YYZ

1 stop31h 20mDelta

Sun 5/722:10YYZ - SOU

1 stop29h 40mDelta

Deal found 11/9£650

Sat 20/909:20SOU - YYZ

2 stops18h 36mDelta

Wed 8/706:00YYZ - SOU

2 stops21h 45mDelta

Deal found 11/9£662

Sun 19/1018:25SOU - YYZ

1 stop30h 30mDelta

Thu 30/1022:15YYZ - SOU

1 stop30h 35mDelta

Deal found 11/9£665

Sat 20/909:20SOU - YYZ

2 stops35h 02mDelta

Sun 5/716:45YYZ - SOU

1 stop11h 05mDelta

Deal found 11/9£675

Best flights from Portsmouth to Niagara Falls
Discover carefully curated flight deals from Portsmouth to Niagara Falls that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2025.

Fri 10/1009:40SOU - YYZ

1 stop11h 10mBritish Airways

Sat 18/1017:20YYZ - SOU

1 stop10h 15mBritish Airways

Deal found 11/9£616

Wed 24/917:35SOU - YYZ

1 stop31h 20mDelta

Sun 5/722:10YYZ - SOU

1 stop29h 40mDelta

Deal found 11/9£650

Fri 10/1009:40SOU - YYZ

1 stop11h 10mBritish Airways

Fri 17/1015:10YYZ - SOU

2 stops19h 35mBritish Airways

Deal found 11/9£637

Sun 19/1018:25SOU - YYZ

1 stop30h 30mDelta

Thu 30/1022:15YYZ - SOU

1 stop30h 35mDelta

Deal found 11/9£665

Tue 23/909:20SOU - YYZ

2 stops18h 39mDelta

Sun 5/716:45YYZ - SOU

1 stop11h 05mDelta

Deal found 11/9£671

Sat 11/1009:40SOU - YYZ

1 stop11h 10mBritish Airways

Sat 18/1017:20YYZ - SOU

1 stop10h 15mBritish Airways

Deal found 11/9£714

Mon 20/1017:35SOU - YYZ

2 stops26h 10mDelta

Thu 30/1022:15YYZ - SOU

1 stop30h 35mDelta

Deal found 11/9£695

Mon 20/1020:00SOU - YYZ

1 stop24h 50mBritish Airways

Fri 31/1015:10YYZ - SOU

2 stops37h 35mBritish Airways

Deal found 11/9£727

Sat 18/1018:05SOU - YYZ

2 stops33h 50mDelta

Thu 30/1022:15YYZ - SOU

1 stop30h 35mDelta

Deal found 11/9£726

Last-minute flights from Portsmouth to Niagara Falls
Discover last-minute flight deals from Portsmouth to Niagara Falls. Data last updated 12 September 2025 and is based on user searches.

Sat 20/909:20SOU - YYZ

2 stops31h 00mDelta

Tue 7/716:45YYZ - SOU

1 stop11h 05mDelta

Deal found 11/9£645

Sat 20/909:20SOU - YYZ

2 stops18h 36mDelta

Wed 8/706:00YYZ - SOU

2 stops21h 45mDelta

Deal found 11/9£662

Sat 20/909:20SOU - YYZ

2 stops35h 02mDelta

Sun 5/716:45YYZ - SOU

1 stop11h 05mDelta

Deal found 11/9£675

Sun 21/909:20SOU - YYZ

1 stop15h 35mDelta

Fri 5/616:45YYZ - SOU

1 stop11h 00mDelta

Deal found 11/9£650

Tue 23/917:35SOU - YYZ

1 stop31h 20mDelta

Sun 5/722:10YYZ - SOU

1 stop29h 40mDelta

Deal found 11/9£650

Fri 10/1009:40SOU - YYZ

1 stop11h 10mBritish Airways

Sat 18/1017:20YYZ - SOU

1 stop10h 15mBritish Airways

Deal found 11/9£616

Fri 10/1009:40SOU - YYZ

1 stop11h 10mBritish Airways

Fri 17/1015:10YYZ - SOU

2 stops19h 35mBritish Airways

Deal found 11/9£637

Sun 19/1018:25SOU - YYZ

1 stop30h 30mDelta

Thu 30/1022:15YYZ - SOU

1 stop30h 35mDelta

Deal found 11/9£665

One-way flights from Portsmouth to Niagara Falls
Search for one-way flight options from Portsmouth to Niagara Falls. Find affordable one-way fares based on user searches. Data last updated 12 September 2025.

Sat 18/1015:20SOU - YYZ

3 stops57h 51mMultiple Airlines

Deal found 10/9£308

Thu 16/1015:05SOU - YYZ

3 stops31h 05mMultiple Airlines

Deal found 10/9£323

Fri 17/1012:15SOU - YYZ

3 stops33h 55mMultiple Airlines

Deal found 10/9£346

Mon 10/1109:30SOU - YYZ

1 stop11h 25mBritish Airways

Deal found 10/9£399

Fri 19/1208:40SOU - YYZ

2 stops16h 35mBritish Airways

Deal found 11/9£713

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Niagara Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Fri 10/10

09:40-15:50

1 stop11h 10m

Toronto Pearson Intl

Sat 18/10

17:20-08:35

1 stop10h 15m

£616

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Fri 10/10

09:40-15:50

1 stop11h 10m

Toronto Pearson Intl

Fri 17/10

15:10-15:45

2 stops19h 35m

£637

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Wed 24/9

17:35-19:55

1 stop31h 20m

Toronto Pearson Intl

Sun 5/7

22:10-08:50

1 stop29h 40m

£650

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Sun 19/10

18:25-19:55

1 stop30h 30m

Toronto Pearson Intl

Thu 30/10

22:15-08:50

1 stop30h 35m

£665

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Tue 23/9

09:20-22:59

2 stops18h 39m

Toronto Pearson Intl

Sun 5/7

16:45-08:50

1 stop11h 05m

£671

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Mon 20/10

17:35-14:45

2 stops26h 10m

Toronto Pearson Intl

Thu 30/10

22:15-08:50

1 stop30h 35m

£695

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Sat 11/10

09:40-15:50

1 stop11h 10m

Toronto Pearson Intl

Sat 18/10

17:20-08:35

1 stop10h 15m

£714

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Sat 18/10

18:05-22:55

2 stops33h 50m

Toronto Pearson Intl

Thu 30/10

22:15-08:50

1 stop30h 35m

£726

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Mon 20/10

20:00-15:50

1 stop24h 50m

Toronto Pearson Intl

Fri 31/10

15:10-08:45

2 stops37h 35m

£727

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Thu 16/10

15:05-17:10

3 stops31h 05m

£323

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 16 results

Best time to book a flight from Portsmouth to Niagara Falls

Have a flexible travel schedule? Discover the best time to fly to Niagara Falls from Portsmouth with our price prediction graph.

Estimated return 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 Portsmouth to Niagara Falls

What is the cheapest month to book a flight from Portsmouth to Niagara Falls?

Currently, January is the cheapest month in which you can book a flight from Portsmouth to Niagara Falls (average of £490). Flying from Portsmouth to Niagara Falls in July is currently the most expensive (average of £708). 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 P0R to NI4?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Niagara Falls as you normally would.

Weekly flight availability from Portsmouth to Niagara Falls

The most flights from P0R to NI4 are scheduled on a Thursday (39 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (23 on average).

Related info for your journey

How long is the flight from Portsmouth to Niagara Falls?
British Airways and Delta can get you from Portsmouth to Niagara Falls in just under 11h 10m. Your travel time can differ by up to 20h 10m. Portsmouth and Niagara Falls are separated by a distance of 3523 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most reliable airlines from Portsmouth to Niagara Falls?
No one likes to see their flight delayed. When booking a flight from Portsmouth to Niagara Falls consider choosing Thai Airways (77%), KLM (77%) or Air France (77%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Portsmouth to Niagara Falls?
On average you can expect to pay £1,119 for a flight from Portsmouth to Niagara Falls. The cheapest flight overall is £350 while the most popular route, (Southampton Eastleigh - Toronto Pearson Intl) is currently priced at £571.
Can I find deals for flights from Portsmouth to Niagara Falls that include hotel bookings?
Yes. In addition to deals on Portsmouth to Niagara Falls flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to Niagara Falls?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Niagara Falls.
Can I find deals for business class flights from Portsmouth to Niagara Falls?
Yes. Cheapflights offers flight deals from Portsmouth 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 Portsmouth to Niagara Falls?
Currently, January is the cheapest month in which you can book a flight from Portsmouth to Niagara Falls (average of £490). Flying from Portsmouth to Niagara Falls in July is currently the most expensive (average of £708). 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 Portsmouth to Niagara Falls

Heathrow to Pearson Intl flights

Gatwick to Pearson Intl flights

Heathrow to Toronto Island flights

London City to Pearson Intl flights

Stansted to Pearson Intl flights

Heathrow to Pierre Elliott Trudeau Intl flights

Luton to Pearson Intl flights

Gatwick to Toronto Island flights

Manchester to Pearson Intl flights

Gatwick to Pierre Elliott Trudeau Intl flights

London City to Pierre Elliott Trudeau Intl flights

Heathrow to Ottawa flights

Manchester to Toronto Island flights

Luton to Pierre Elliott Trudeau Intl flights

Edinburgh to Pearson Intl flights

Stansted to Pierre Elliott Trudeau Intl flights

Gatwick to Ottawa flights

London City to Ottawa flights

Edinburgh to Toronto Island flights

Southend to Pearson Intl flights

Birmingham to Pearson Intl flights

Bristol to Pearson Intl flights

Birmingham to Toronto Island flights

Heathrow to Windsor flights

Manchester to Pierre Elliott Trudeau Intl flights

Manchester to Ottawa flights

Edinburgh to Pierre Elliott Trudeau Intl flights

Southampton to Pearson Intl flights

Heathrow to London flights

Gatwick to London flights

Leeds to Pearson Intl flights

Newcastle upon Tyne to Pearson Intl flights

Stansted to Ottawa flights

Liverpool to Pearson Intl flights

London City to London flights

Heathrow to Thunder Bay flights

Newcastle upon Tyne to Pierre Elliott Trudeau Intl flights

Leeds to Pierre Elliott Trudeau Intl flights

Birmingham to Pierre Elliott Trudeau Intl flights

Gatwick to Region of Waterloo Intl flights

Newcastle upon Tyne to Ottawa flights

Birmingham to Ottawa flights

Complete your trip

Niagara Falls car hire

Toronto Pearson Intl Airport car hire

Toronto Island Airport car hire

Hamilton Airport car hire

Toronto Region of Waterloo Intl Airport car hire

Top 10 airlines flying from Portsmouth to Niagara Falls

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest£256	Average£264	FlexibilityNo cancel fee	On-timeN/A	Search PLAY flights
Icelandair	Cheapest£285	Average£364	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Lufthansa	Cheapest£296	Average£428	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Scandinavian Airlines	Cheapest£296	Average£443	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Aer Lingus	Cheapest£298	Average£505	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Air Transat	Cheapest£298	Average£405	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
TAP AIR PORTUGAL	Cheapest£304	Average£525	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Delta	Cheapest£316	Average£495	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Virgin Atlantic	Cheapest£326	Average£426	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
KLM	Cheapest£335	Average£442	FlexibilityNo cancel fee	On-time75%	Search KLM flights

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How does Cheapflights help users find flights from Portsmouth to Niagara Falls?

Deals for Portsmouth to Niagara Falls flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Niagara Falls?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Niagara Falls from Portsmouth.

Can Cheapflights find flights from Portsmouth to Niagara Falls with no change fees?

Need flexible booking options for your flight to Niagara Falls from Portsmouth? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Portsmouth to Niagara Falls become cheaper?

Yes, Cheapflights offers price alerts on Portsmouth to Niagara Falls flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Portsmouth to Niagara Falls from £308

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 18/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Niagara Falls

Keep the following information in mind while searching for Portsmouth to Niagara Falls flight deals. Data was last updated 12 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portsmouth to Niagara Falls

Cheapest flights from Portsmouth to Niagara FallsExplore the most affordable flight options available from Portsmouth to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Explore the most affordable flight options available from Portsmouth to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Niagara Falls that are best for you.

Best time to book a flight from Portsmouth to Niagara Falls

Have a flexible travel schedule? Discover the best time to fly to Niagara Falls from Portsmouth with our price prediction graph.

Cheapflights Insights

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

What is the cheapest month to book a flight from Portsmouth to Niagara Falls?

What is the cheapest time of day to fly from P0R to NI4?

Find hourly flight availability from Portsmouth 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 12 September 2025.

Weekly flight availability from Portsmouth to Niagara Falls

Related info for your journey

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

How long is the flight from Portsmouth to Niagara Falls?

What are the most reliable airlines from Portsmouth to Niagara Falls?

What are the cheapest flights from Portsmouth to Niagara Falls?

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

How can I find direct flights from Portsmouth to Niagara Falls?

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

What is the cheapest month to book a flight from Portsmouth to Niagara Falls?

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 Portsmouth to Niagara Falls

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Portsmouth to Niagara Falls

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portsmouth to Niagara Falls?

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Niagara Falls?

Can Cheapflights find flights from Portsmouth to Niagara Falls with no change fees?

Can Cheapflights notify me if prices for flights from Portsmouth to Niagara Falls become cheaper?

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Cheapest flights from Portsmouth to Niagara Falls
Explore the most affordable flight options available from Portsmouth to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.