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Cheap flights from Portsmouth to Niagara Falls, Ontario from £296

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YYZ
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 30 October 2025.

Sun 7/1218:05SOU - YYZ
1 stop26h 35mDelta
Sun 14/1217:15YYZ - SOU
2 stops33h 55mDelta
Deal found 28/10£648
Sun 7/1209:30SOU - YYZ
1 stop11h 25mBritish Airways
Mon 15/1217:25YYZ - SOU
1 stop17h 10mBritish Airways
Deal found 28/10£653
Fri 5/1220:10SOU - YYZ
1 stop24h 45mBritish Airways
Mon 15/1217:25YYZ - SOU
1 stop17h 10mBritish Airways
Deal found 28/10£659
Sat 6/1209:30SOU - YYZ
1 stop11h 25mBritish Airways
Sat 13/1217:25YYZ - SOU
1 stop10h 20mBritish Airways
Deal found 28/10£661
Sun 7/1218:05SOU - YYZ
1 stop26h 35mDelta
Mon 15/1206:00YYZ - SOU
2 stops21h 10mDelta
Deal found 28/10£665
Thu 11/1216:05SOU - YYZ
1 stop28h 50mBritish Airways
Tue 16/1217:25YYZ - SOU
1 stop17h 10mBritish Airways
Deal found 28/10£666
Sun 7/1209:30SOU - YYZ
1 stop11h 25mBritish Airways
Tue 16/1217:25YYZ - SOU
2 stops13h 40mBritish Airways
Deal found 28/10£674
Wed 10/1215:50SOU - YYZ
2 stops29h 05mBritish Airways
Tue 16/1217:25YYZ - SOU
1 stop17h 10mBritish Airways
Deal found 28/10£675
Fri 5/1217:30SOU - YYZ
1 stop27h 10mDelta
Sun 14/1217:15YYZ - SOU
2 stops33h 55mDelta
Deal found 28/10£678
Sat 6/1209:30SOU - YYZ
1 stop11h 25mBritish Airways
Mon 15/1217:25YYZ - SOU
2 stops17h 55mBritish Airways
Deal found 28/10£682
Mon 8/1208:40SOU - YYZ
2 stops19h 17mDelta
Mon 15/1206:00YYZ - SOU
2 stops21h 10mDelta
Deal found 28/10£683
Fri 5/1220:10SOU - YYZ
1 stop24h 45mBritish Airways
Sat 13/1217:25YYZ - SOU
2 stops33h 45mBritish Airways
Deal found 28/10£687

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 30 October 2025.

Round-trip from

£621

One-way from

£296

Popular in

December

Cheapest in

February

Average price

£432
Delta
  • Delta
  • 19/4-28/4
  • 2 total stops
  • 35h 50m total
  • Portsmouth to Niagara Falls
Search Deals
19/4
  • 19/4
  • 1 total stop
  • 23h 15m total
  • Portsmouth to Niagara Falls
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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 30 October 2025.
Use the filters below to find and compare flights from Portsmouth to Niagara Falls that are best for you.

Fly from

Portsmouth

Fly to

Niagara Falls

Route

Depart

Return

Price

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Tue 21/4

17:35-13:20

1 stop24h 45m

Toronto Pearson Intl

Tue 28/4

16:45-08:50

1 stop11h 05m

£621

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Wed 22/4

09:20-19:55

1 stop15h 35m

Toronto Pearson Intl

Mon 27/4

16:45-08:50

1 stop11h 05m

£621

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Wed 10/12

08:40-15:40

1 stop12h 00m

Toronto Pearson Intl

Sun 14/12

17:15-08:10

2 stops33h 55m

£648

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Mon 8/12

08:40-15:40

1 stop12h 00m

Toronto Pearson Intl

Sun 14/12

17:15-08:10

2 stops33h 55m

£648

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Wed 22/4

09:20-19:55

1 stop15h 35m

Toronto Pearson Intl

Sun 26/4

22:10-17:00

1 stop13h 50m

£650

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Sun 19/4

17:35-13:20

1 stop24h 45m

Toronto Pearson Intl

Sun 26/4

16:45-08:50

1 stop11h 05m

£650

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Mon 8/12

09:30-15:55

1 stop11h 25m

Toronto Pearson Intl

Mon 15/12

17:25-15:35

1 stop17h 10m

£653

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Sun 7/12

09:30-15:55

1 stop11h 25m

Toronto Pearson Intl

Tue 16/12

17:25-11:55

1 stop13h 30m

£653

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Tue 21/4

17:35-13:20

1 stop24h 45m

Toronto Pearson Intl

Thu 30/4

16:45-08:45

1 stop11h 00m

£658

SouthamptonToronto

SOU - YYZ

SOUYYZ

Southampton Eastleigh

Wed 10/12

16:05-15:55

1 stop28h 50m

Toronto Pearson Intl

Tue 16/12

17:25-15:35

1 stop17h 10m

£659

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Showing 1-10 of 15 results
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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 month to book a flight from Portsmouth to Niagara Falls?

Currently, March is the cheapest month in which you can book a flight from Portsmouth to Niagara Falls (average of £263). Flying from Portsmouth to Niagara Falls in December is currently the most expensive (average of £357). 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?

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 30 October 2025.

It’s optimal to fly from Portsmouth to Niagara Falls in the evening. By choosing this option you can save up to 21% on the cost of your flight, compared to a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly return from Portsmouth to Niagara Falls. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Portsmouth to Niagara Falls flight should consider departing on Monday afternoons when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 24h 45m. 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 Ethiopian Air (85%), Thai Airways (84%) or Egyptair (82%) 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 £1,040 for a flight from Portsmouth to Niagara Falls. The cheapest flight overall is £278 while the most popular route, (Southampton Eastleigh - Toronto Pearson Intl) is currently priced at £643.

  • 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, March is the cheapest month in which you can book a flight from Portsmouth to Niagara Falls (average of £263). Flying from Portsmouth to Niagara Falls in December is currently the most expensive (average of £357). 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

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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.
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Manchester to London flights
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Heathrow to Windsor flights
Heathrow to Thunder Bay flights
Bristol to Toronto Island 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 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£263Average£271FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£293Average£373FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£305Average£447FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Scandinavian AirlinesCheapest£305Average£479FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air TransatCheapest£307Average£414FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
TAP AIR PORTUGALCheapest£311Average£539FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
DeltaCheapest£312Average£504FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Aer LingusCheapest£319Average£519FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Virgin AtlanticCheapest£336Average£437FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£344Average£463FlexibilityNo cancel feeOn-time75%
Search KLM 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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