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Cheap flights from Ottawa to Portsmouth from C$ 612

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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
26 Feb — 5 Mar1
1 adult

Cheap flight deals from Ottawa to Portsmouth

Keep the following information in mind while searching for Ottawa to Portsmouth flight deals. Data was last updated 21 February 2025.

Popular in

December

Cheapest in

February

Average price

C$ 970
Highest demand for flights based on searches. 2% potential increase in price (C$ 33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
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Find flight deals from Ottawa to Portsmouth

One-way flights from Ottawa to Portsmouth
Search for one-way flight options from Ottawa to Portsmouth. Find affordable one-way fares based on user searches. Data last updated 21 February 2025.

Sat 5/45:55 a.m.YOW - SOU
3 stops57h 00mMultiple Airlines
Deal found 19/2C$ 612
Sat 5/410:05 a.m.YOW - SOU
2 stops17h 30mAer Lingus
Deal found 19/2C$ 918

Find flights from Ottawa to Portsmouth within your budget

Customize your flight search to find flights from Ottawa to Portsmouth 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 629,999 searches. Data last updated 21 February 2025.

Fly from

Ottawa

Fly to

Portsmouth

Route

Depart

Return

Price

OttawaSouthampton

YOW - SOU

YOWSOU

Ottawa

Sat 5/4

5:55 a.m.-7:55 p.m.

3 stops57h 00m

C$ 612

OttawaSouthampton

YOW - SOU

YOWSOU

Ottawa

Sat 5/4

10:05 a.m.-8:35 a.m.

2 stops17h 30m

C$ 918

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/2

Best time to book a flight from Ottawa to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Ottawa 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.

Travel insights for flights from Ottawa to Portsmouth

Get recent, data-driven insights about flights from Ottawa to Portsmouth including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Ottawa to Portsmouth (average of C$ 560). Flying from Ottawa to Portsmouth in July is currently the most expensive (average of C$ 874). 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 YOW to P0R?

Find hourly flight availability from Ottawa to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

When flying from Ottawa to Portsmouth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 mm per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

Temperature in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portsmouth, 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 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portsmouth. Reviews last updated 21 February 2025.
Aer Lingus
7.0
Good
1,070 reviews
Check prices

Entertainment

6.7

Overall

7.0

Food

6.4

Crew

7.9

Boarding

7.2

Comfort

7.0

Reviews

1 / 20

2.0
Mediocre

Thomas,Jan 2025

DUB - JFK

Don’t check bags which for an international flight means don’t take this air line. Lost our luggage and once found refused to deliver it to our home. Had to pick back up from the airport. No compensation not even an apology… Don’t fly aer lingus.

Aer Lingus
7.0
Good
1,070 reviews
Aer Lingus
7.0
Good
1,070 reviews
Check prices

Entertainment

6.7

Overall

7.0

Food

6.4

Crew

7.9

Boarding

7.2

Comfort

7.0

Reviews

1 / 20

2.0
Mediocre

Thomas,Jan 2025

DUB - JFK

Don’t check bags which for an international flight means don’t take this air line. Lost our luggage and once found refused to deliver it to our home. Had to pick back up from the airport. No compensation not even an apology… Don’t fly aer lingus.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Portsmouth. 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 Ottawa to Portsmouth?

    Located just 10.6 km from the city centre, Ottawa is the airport most travellers will use when flying to Portsmouth from Ottawa. Booking flights from Ottawa (YOW) to Portsmouth should be relatively easy as there are 0 daily outbound flights to Portsmouth from 6 different airlines.

  • What are the cheapest flights from Ottawa to Portsmouth?

    Looking at all options, your cheapest flight can be booked for C$ 951. While the most popular route (Ottawa - Southampton Eastleigh) can be booked for C$ 1,703 on average our data indicates C$ 1,151 when flying from Ottawa to Portsmouth.

  • Can I find deals for flights from Ottawa to Portsmouth that include hotel bookings?

    Yes. In addition to deals on Ottawa to Portsmouth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Portsmouth?

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

  • Can I find deals for business class flights from Ottawa to Portsmouth?

    Yes. Cheapflights offers flight deals from Ottawa to Portsmouth 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 Ottawa to Portsmouth?

    Currently, January is the cheapest month in which you can book a flight from Ottawa to Portsmouth (average of C$ 560). Flying from Ottawa to Portsmouth in July is currently the most expensive (average of C$ 874). 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 Ottawa to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Ottawa to Portsmouth

Discover the top 6 airlines that operate flights from Ottawa to Portsmouth. 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 629,999 searches. Data last updated 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapestC$ 753AverageC$ 846FlexibilityNo cancel feeOn-time72%
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Air FranceCheapestC$ 753AverageC$ 953FlexibilityNo cancel feeOn-time77%
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LufthansaCheapestC$ 920AverageC$ 1,155FlexibilityNo cancel feeOn-time76%
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Porter AirlinesCheapestC$ 929AverageC$ 1,095FlexibilityNo cancel feeOn-time52%
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Air TransatCheapestC$ 972AverageC$ 1,139FlexibilityNo cancel feeOn-time50%
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Air CanadaCheapestC$ 981AverageC$ 1,149FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Ottawa to Portsmouth?

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

Cheapflights helps you find that perfect flight to Portsmouth from Ottawa by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Certainly. Search results for flights to Portsmouth from Ottawa shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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