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Cheap flights from London Heathrow Airport to Ottawa from C$ 425

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
29 Apr — 6 May1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Ottawa are usually found in June or May, booked 89 days in advance, depart on a Friday or Tuesday and return on a Tuesday

Cheap flight deals from Heathrow to Ottawa

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Ottawa
Explore the most affordable flight options available from Heathrow to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 March 2026.

Sat 23/512:15 p.m.
LHR
-
YOW
1 stop11h 33m
United Airlines
Sat 6/62:52 p.m.
YOW
-
LHR
1 stop14h 48m
United Airlines
Deal found 28/3C$ 668
Thu 11/612:40 p.m.
LHR
-
YOW
1 stop11h 13m
Air Canada
Wed 17/69:00 p.m.
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 28/3C$ 711
Wed 10/612:40 p.m.
LHR
-
YOW
1 stop11h 13m
Air Canada
Thu 18/66:55 p.m.
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 29/3C$ 752
Sat 6/62:10 p.m.
LHR
-
YOW
Nonstop7h 55m
Air Canada
Sat 20/69:00 p.m.
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 29/3C$ 754
Fri 15/512:40 p.m.
LHR
-
YOW
1 stop11h 13m
Air Canada
Tue 19/53:00 p.m.
YOW
-
LHR
1 stop10h 30m
Air Canada
Deal found 29/3C$ 759
Fri 15/56:40 p.m.
LHR
-
YOW
2 stops27h 31m
Multiple Airlines
Sun 24/57:30 p.m.
YOW
-
LHR
1 stop9h 05m
Multiple Airlines
Deal found 26/3C$ 760
Sat 30/512:40 p.m.
LHR
-
YOW
1 stop11h 13m
Air Canada
Wed 3/69:00 p.m.
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 26/3C$ 761
Tue 15/96:50 a.m.
LHR
-
YOW
2 stops13h 20m
Air Canada
Tue 22/95:30 p.m.
YOW
-
LHR
1 stop22h 30m
Air Canada
Deal found 25/3C$ 763
Fri 22/59:30 a.m.
LHR
-
YOW
1 stop9h 26m
Air Canada
Fri 29/53:00 p.m.
YOW
-
LHR
1 stop10h 30m
Air Canada
Deal found 29/3C$ 764
Tue 19/58:05 p.m.
LHR
-
YOW
2 stops29h 41m
Multiple Airlines
Sun 31/58:05 p.m.
YOW
-
LHR
1 stop10h 45m
Multiple Airlines
Deal found 25/3C$ 770

Find flight deals from Heathrow to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 30 March 2026.

Round-trip from

C$ 668

One-way from

C$ 425

Popular in

August

Cheapest in

June

Average price

C$ 996

Good round-trip deal

C$ 935 or less

Good one-way deal

C$ 990 or less
United Airlines
  • United Airlines
  • 23/5-6/6
  • 2 total stops
  • 26h 21m total
  • London to Ottawa
Search Deals
6/5
  • 6/5
  • 3 total stops
  • 36h 30m total
  • London to Ottawa
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Ottawa.
Search Deals
Price to beat on a one-way flight from London Heathrow to Ottawa.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Ottawa 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 30 March 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 22/5

9:30 a.m.-1:56 p.m.

1 stop9h 26m

Ottawa

Fri 5/6

2:35 p.m.-6:30 a.m.

1 stop10h 55m

C$ 832

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 10/6

6:50 a.m.-11:54 p.m.

2 stops22h 04m

Ottawa

Thu 18/6

6:05 a.m.-9:35 p.m.

1 stop10h 30m

C$ 845

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 20/5

6:50 a.m.-4:38 p.m.

2 stops14h 48m

Ottawa

Sun 24/5

2:52 p.m.-9:20 a.m.

2 stops13h 28m

C$ 853

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 11/5

6:15 a.m.-3:00 p.m.

1 stop13h 45m

Ottawa

Mon 18/5

5:25 p.m.-4:35 p.m.

1 stop18h 10m

C$ 1,027
Quickest round-trip

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 1/9

9:30 a.m.-1:54 p.m.

1 stop9h 24m

Ottawa

Mon 7/9

6:55 p.m.-6:30 a.m.

Nonstop6h 35m

C$ 1,089

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 29/4

5:45 p.m.-5:35 p.m.

1 stop28h 50m

Ottawa

Tue 26/5

5:10 p.m.-4:35 p.m.

1 stop18h 25m

C$ 1,091

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 1/5

6:30 a.m.-3:00 p.m.

2 stops13h 30m

Ottawa

Sun 10/5

5:25 p.m.-7:55 a.m.

1 stop9h 30m

C$ 1,092

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 9/5

8:45 a.m.-11:54 p.m.

2 stops20h 09m

Ottawa

Sun 10/5

12:00 p.m.-10:40 a.m.

2 stops17h 40m

C$ 1,092

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 20/7

9:30 a.m.-12:25 p.m.

Nonstop7h 55m

Ottawa

Sun 16/8

3:10 p.m.-6:30 a.m.

1 stop10h 20m

C$ 1,100

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sun 19/7

5:40 p.m.-12:45 a.m.

1 stop12h 05m

Ottawa

Sat 15/8

3:10 p.m.-6:30 a.m.

1 stop10h 20m

C$ 1,111

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/3

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Heathrow to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Heathrow 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 London Heathrow Airport to Ottawa

How far ahead should I book a flight from London Heathrow Airport to Ottawa?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Ottawa. Price data was last updated on 13 March 2026.

The price you pay for your flight from London Heathrow Airport to Ottawa may vary depending on when you book. For the best chance of a lower fare, look to book 89 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London Heathrow Airport to Ottawa?

Currently, July is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of C$ 568). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of C$ 717). 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 LHR to YOW?

Find hourly flight availability from Heathrow to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 March 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Ottawa as you normally would.

How much does it cost to fly round-trip from London Heathrow Airport to Ottawa?

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. 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 Ottawa. Reviews last updated 30 March 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Ottawa, such as Air France,Air Canada, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air France
7.4
Good
1,556 reviews
Check prices

Boarding

7.5

Entertainment

7.0

Comfort

7.3

Food

7.0

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Rakesh,Mar 2026

SLC - AMS

The flight was on Delta. Delta was super efficient.. Overall good flight.
Air France
7.4
Good
1,556 reviews
Air France
7.4
Good
1,556 reviews
Check prices

Boarding

7.5

Entertainment

7.0

Comfort

7.3

Food

7.0

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Rakesh,Mar 2026

SLC - AMS

The flight was on Delta. Delta was super efficient.. Overall good flight.
Air Canada
7.1
Good
10,862 reviews
Air France
7.4
Good
1,556 reviews
Check prices

Boarding

7.5

Entertainment

7.0

Comfort

7.3

Food

7.0

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Rakesh,Mar 2026

SLC - AMS

The flight was on Delta. Delta was super efficient.. Overall good flight.
Lufthansa
6.8
Okay
7,877 reviews
Air France
7.4
Good
1,556 reviews
Check prices

Boarding

7.5

Entertainment

7.0

Comfort

7.3

Food

7.0

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Rakesh,Mar 2026

SLC - AMS

The flight was on Delta. Delta was super efficient.. Overall good flight.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Ottawa. 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 into for flights to Ottawa from London Heathrow?

    Located just 10.6 km from the city centre, Ottawa is the airport most travellers will use when flying to Ottawa from London Heathrow. Booking flights from London Heathrow to Ottawa (YOW) should be relatively easy as there is 1 daily inbound flight from London Heathrow from 3 different airlines.

  • How long is the flight from London Heathrow Airport to Ottawa?

    There are many flights that can get you from London Heathrow Airport to Ottawa in 9h 26m. Fly via Lufthansa, United Airlines, or Virgin Atlantic to get the fastest option. The distance from London Heathrow Airport to Ottawa is about 5343 km. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Ottawa round-trip?

    Lufthansa, at C$ 736, was found to be the cheapest airline from London Heathrow Airport to Ottawa.Alternate airlines to your destination round-trip include Air France and Air Canada. Users have found that Lufthansa is 28% cheaper than the other options available to this destination.

  • What are the most reliable airlines from London Heathrow Airport to Ottawa?

    The top 3 most reliable airlines when flying from London Heathrow Airport to Ottawa are Air Canada (89%), Austrian Airlines (89%) and SriLankan Airlines (89%).

  • What are the cheapest flights from London Heathrow Airport to Ottawa?

    Looking for the cheapest flight from London Heathrow Airport to Ottawa? While on average our users pay C$ 1,045, our data indicates the cheapest price to be C$ 815. The most popular route (London Heathrow - Ottawa), is priced around C$ 668.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Ottawa 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 London Heathrow Airport to Ottawa?

    Currently, July is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of C$ 568). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of C$ 717). 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

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Brockville
Perth
Wakefield
Pembroke
Smiths Falls

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Heathrow to Ottawa

Discover the top 3 airlines that operate flights from Heathrow to Ottawa. 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 30 March 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapestC$ 736AverageC$ 947FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air FranceCheapestC$ 800AverageC$ 1,345FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air CanadaCheapestC$ 801AverageC$ 1,014FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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

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

When you search for this flight from Heathrow to Ottawa, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Ottawa for you. Better yet — we are completely free to use.

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

Yes! Cheapflights helps users easily find flights from Heathrow to Ottawa with no change fees.

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

Not ready to book yet? You can track prices for flights from Heathrow to Ottawa on Cheapflights with our Price Alert feature and get notified when better prices are available.

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