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Cheap flights from Portsmouth to Niagara Falls, Ontario from £285

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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
25 Jun — 2 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Niagara Falls

Enter your travel dates to find the best prices.

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 26 May 2026.

Mon 22/620:00
SOU
-
YYZ
1 stop23h 55m
Multiple Airlines
Mon 29/622:55
YYZ
-
SOU
1 stop12h 55m
Multiple Airlines
Deal found 25/5£542
Sun 19/720:45
SOU
-
YYZ
1 stop22h 25m
Multiple Airlines
Sun 26/721:55
YYZ
-
SOU
1 stop9h 40m
Multiple Airlines
Deal found 25/5£551

Find 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 26 May 2026.

Round-trip from

£542

One-way from

£285

Popular in

December

Cheapest in

February

Average price

£462
22/6-29/6
  • 22/6-29/6
  • 2 total stops
  • 36h 50m total
  • Portsmouth to Niagara Falls
Search Deals
7/7
  • 7/7
  • 2 total stops
  • 47h 45m total
  • Portsmouth to Niagara Falls
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (£3 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth 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 858,174 searches. Data last updated 26 May 2026.
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

Cheapest return flight

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Sun 19/7

20:00-13:20

1 stop22h 20m

Toronto Pearson Intl

Sun 26/7

21:55-19:00

2 stops16h 05m

£663

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Tue 30/6

17:20-19:55

1 stop31h 35m

Toronto Pearson Intl

Tue 14/7

16:45-08:45

1 stop11h 00m

£667

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Tue 30/6

17:20-19:55

1 stop31h 35m

Toronto Pearson Intl

Mon 13/7

06:04-08:45

2 stops21h 41m

£688

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Thu 2/7

17:20-13:20

1 stop25h 00m

Toronto Pearson Intl

Tue 14/7

16:45-08:45

1 stop11h 00m

£697

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Fri 20/11

17:05-15:55

1 stop27h 50m

Toronto Pearson Intl

Fri 11/12

13:10-16:35

2 stops22h 25m

£738

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Sat 13/6

17:20-19:55

1 stop31h 35m

Toronto Pearson Intl

Fri 3/7

12:15-08:45

2 stops15h 30m

£748
Fastest return journey

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Sat 4/7

09:15-23:15

2 stops19h 00m

Toronto Pearson Intl

Mon 13/7

16:45-08:45

1 stop11h 00m

£758

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Tue 23/6

20:00-23:29

2 stops32h 29m

Toronto Pearson Intl

Tue 14/7

17:35-16:50

1 stop18h 15m

£760

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Sat 27/6

09:15-19:55

1 stop15h 40m

Toronto Pearson Intl

Mon 29/6

18:14-16:50

2 stops17h 36m

£762

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Thu 25/6

09:05-19:55

1 stop15h 50m

Toronto Pearson Intl

Mon 29/6

18:14-16:50

2 stops17h 36m

£762

Flights are sorted by cheapest return flights first.

Deals found on 22/5

Showing 1-10 of 18 resultsSorted by cheapest first
1
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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 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 26 May 2026.

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

Explore weekly flight availability from Portsmouth to Niagara Falls. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 26 May 2026.

The most flights from P0R to NI4 are scheduled on a Tuesday (39 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (18 on average).

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?

    Delta can get you from Portsmouth to Niagara Falls in just under 31h 35m. Your travel time can differ by up to . Portsmouth and Niagara Falls are separated by a distance of 3523 mi.

  • 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 United Airlines (85%), Lufthansa (85%) or MEA (84%) 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 £1,150 for a flight from Portsmouth to Niagara Falls. The cheapest flight overall is £318 while the most popular route, (Southampton Eastleigh - Toronto Pearson Intl) is currently priced at £551.

  • 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.

See more FAQs

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Alternative routes for Portsmouth to Niagara Falls

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Pearson Intl flights
Gatwick to Pearson Intl flights
London City to Pearson Intl flights
Stansted to Pearson Intl flights
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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
Southend to Pearson Intl flights
Edinburgh to Pearson Intl flights
London City to Pierre Elliott Trudeau Intl flights
Stansted to Pierre Elliott Trudeau Intl flights
Manchester to Toronto Island flights
Heathrow to Ottawa flights
Luton to Pierre Elliott Trudeau Intl flights
Edinburgh to Toronto Island flights
Birmingham to Pearson Intl flights
Gatwick to Ottawa flights
Manchester to Pierre Elliott Trudeau Intl flights
Birmingham to Toronto Island flights
Stansted to Ottawa flights
London City to Ottawa flights
Southampton to Pearson Intl flights
Bristol to Pearson Intl flights
Heathrow to London flights
Edinburgh to Pierre Elliott Trudeau Intl flights
Newcastle upon Tyne to Pearson Intl flights
Birmingham to Pierre Elliott Trudeau Intl flights
Leeds to Pearson Intl flights
Bristol to Toronto Island flights
Heathrow to Windsor flights
Gatwick to London flights
Exeter to Pearson Intl flights
Stansted to London flights
Newcastle upon Tyne to Pierre Elliott Trudeau Intl flights
Birmingham to Ottawa flights
Liverpool to Pearson Intl flights
Bristol to Pierre Elliott Trudeau Intl flights
Edinburgh to Thunder Bay flights
Heathrow to Thunder Bay flights
Manchester to Ottawa flights

Top 10 airlines flying from Portsmouth to Niagara Falls

Discover the top 10 airlines that operate flights from Portsmouth to Niagara Falls. 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 858,174 searches. Data last updated 26 May 2026.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest£270Average£345FlexibilityNo cancel feeOn-time79%
Search SWISS flights
IcelandairCheapest£271Average£418FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air FranceCheapest£318Average£548FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air TransatCheapest£318Average£445FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
DeltaCheapest£323Average£612FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Aer LingusCheapest£324Average£536FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£326Average£548FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£332Average£464FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£335Average£521FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£338Average£538FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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?

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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