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

Our cheapest airline available from London to Ottawa is Air France. Our recent data shows that you can find tickets from as low as C$ 680 on this airline. Additional options worth looking into are KLM and Virgin Atlantic, starting at C$ 746 and C$ 764 round-trip. These flights start at 33% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from London to Ottawa one-way?

C$ 752 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Transat and Aer Lingus, with prices starting from C$ 796 and C$ 813, respectively.

What is the cheapest day to fly from London to Ottawa?

Travelers seeking maximum savings on their London to Ottawa flight should consider departing on Friday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular routes from London to Ottawa?

When deciding which route to take from London to Ottawa consider London Heathrow - Ottawa, London Gatwick - Ottawa or London City - Ottawa as they are the most popular.

What are the cheapest flights from London to Ottawa?

The cheapest flight price from London to Ottawa is C$ 923. On average you can expect to pay C$ 2,090. The most popular route, (London Heathrow - Ottawa), can usually be booked for C$ 636.

What are the most reliable airlines from London to Ottawa?

Before booking your flight to Ottawa from London, check out the most reliable airlines to get you to your destination on time: Air Canada (97%), Aegean Airlines (97%), Austrian Airlines( 97%).

What are the most popular airlines that fly from London to Ottawa?

When booking a flight from London to Ottawa, you may want to consider flying on Air Canada, Air France or Lufthansa as they are the most popular for this route.

What is the cheapest day to fly round-trip from London to Ottawa?

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Ottawa. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from London to Ottawa?

Travellers have found it’s best to book a flight 33 days in advance to save up to 26% 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 33 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 London to Ottawa 1-2 weeks in advance for as low as C$ 983, or C$ 1,139 for flights within the next 24 hours.

What is the cheapest month to fly from London to Ottawa?

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, January can be a great choice for travel to Ottawa. Flights to Ottawa from London in January are about C$ 1,014 on average during January, but can be found for as low as C$ 684.

What airport do you fly into for flights to Ottawa from London?

Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly into when you book flights from London to Ottawa. 3 airlines have flights to Ottawa from London on a regular basis. Booking flights from London to Ottawa should not be difficult; the airport handles an average of 1 inbound flight from London per day.

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

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

How can I find direct flights from London to Ottawa?

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

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

Yes. Cheapflights offers flight deals from London 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.

C$ 474+ Flights from London to Ottawa

Cheapflights Tip: The best prices from London to Ottawa are usually found in January or February, booked 88 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap flight deals from London to Ottawa

Round-trip from	C$ 680
One-way from	C$ 474
Popular in	August
Cheapest in	January
Average price	C$ 945
Good round-trip deal	C$ 977 or less
Good one-way deal	C$ 2,878 or less

Air France
2/9-7/9
2 total stops
29h 47m total
London to Ottawa

Search Deals

20/8
2 total stops
31h 05m total
London to Ottawa

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (C$ 252 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 46 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Price to beat on a round-trip flight from London (LON) to Ottawa.

Search Deals

Price to beat on a one-way flight from London (LON) to Ottawa.

Search Deals

Find flight deals from London to Ottawa

Cheapest flights from London to Ottawa
Explore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Tue 2/95:50 p.m.LHR - YOW

1 stop11h 32mAir France

Sun 7/95:20 p.m.YOW - LHR

1 stop18h 15mAir France

Deal found 10/6C$ 680

Fri 29/85:50 p.m.LHR - YOW

1 stop11h 32mMultiple Airlines

Fri 5/95:15 p.m.YOW - LHR

1 stop9h 45mMultiple Airlines

Deal found 11/6C$ 738

Wed 25/66:30 a.m.LHR - YOW

2 stops13h 35mKLM

Mon 21/75:15 p.m.YOW - LHR

2 stops12h 30mKLM

Deal found 10/6C$ 746

Tue 8/76:15 a.m.LHR - YOW

1 stop13h 50mVirgin Atlantic

Wed 16/75:15 p.m.YOW - LHR

1 stop12h 15mVirgin Atlantic

Deal found 10/6C$ 764

Wed 10/911:35 a.m.LGW - YOW

2 stops17h 47mMultiple Airlines

Sun 14/95:55 a.m.YOW - LGW

2 stops22h 55mMultiple Airlines

Deal found 10/6C$ 794

Sat 8/1111:40 a.m.LGW - YOW

1 stop11h 42mAir Transat

Wed 12/116:25 a.m.YOW - LGW

1 stop22h 20mAir Transat

Deal found 9/6C$ 875

Wed 27/812:00 p.m.LGW - YOW

2 stops17h 22mDelta

Tue 2/95:55 a.m.YOW - LGW

2 stops23h 05mDelta

Deal found 10/6C$ 922

Thu 28/85:50 p.m.LHR - YOW

1 stop11h 32mDelta

Mon 1/95:55 a.m.YOW - LHR

2 stops21h 55mDelta

Deal found 10/6C$ 947

Sat 30/85:40 p.m.LHR - YOW

1 stop10h 28mAir Canada

Sat 6/99:00 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Deal found 11/6C$ 953

Sat 21/66:30 a.m.LHR - YOW

2 stops22h 50mLufthansa

Thu 4/96:55 p.m.YOW - LHR

Nonstop6h 35mLufthansa

Deal found 10/6C$ 967

Wed 11/66:50 a.m.LHR - YOW

2 stops12h 00mBrussels Airlines

Sun 29/63:55 p.m.YOW - LHR

2 stops13h 20mBrussels Airlines

Deal found 10/6C$ 983

Thu 21/86:55 a.m.STN - YOW

3 stops22h 27mMultiple Airlines

Thu 28/85:55 a.m.YOW - STN

2 stops35h 30mMultiple Airlines

Deal found 11/6C$ 986

Best flights from London to Ottawa
Discover carefully curated flight deals from London to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 June 2025.

Tue 2/95:50 p.m.LHR - YOW

1 stop11h 32mAir France

Sun 7/95:20 p.m.YOW - LHR

1 stop18h 15mAir France

Deal found 10/6C$ 680

Fri 29/85:50 p.m.LHR - YOW

1 stop11h 32mMultiple Airlines

Fri 5/95:15 p.m.YOW - LHR

1 stop9h 45mMultiple Airlines

Deal found 11/6C$ 738

Wed 25/66:30 a.m.LHR - YOW

2 stops13h 35mKLM

Mon 21/75:15 p.m.YOW - LHR

2 stops12h 30mKLM

Deal found 10/6C$ 746

Tue 8/76:15 a.m.LHR - YOW

1 stop13h 50mVirgin Atlantic

Wed 16/75:15 p.m.YOW - LHR

1 stop12h 15mVirgin Atlantic

Deal found 10/6C$ 764

Sat 8/1111:40 a.m.LGW - YOW

1 stop11h 42mAir Transat

Wed 12/116:25 a.m.YOW - LGW

1 stop22h 20mAir Transat

Deal found 9/6C$ 875

Wed 27/812:00 p.m.LGW - YOW

2 stops17h 22mDelta

Tue 2/95:55 a.m.YOW - LGW

2 stops23h 05mDelta

Deal found 10/6C$ 922

Sat 30/85:40 p.m.LHR - YOW

1 stop10h 28mAir Canada

Sat 6/99:00 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Deal found 11/6C$ 953

Tue 24/68:30 a.m.LHR - YOW

2 stops20h 50mLufthansa

Thu 4/96:55 p.m.YOW - LHR

Nonstop6h 35mLufthansa

Deal found 10/6C$ 967

Fri 29/86:50 a.m.LHR - YOW

2 stops14h 53mUnited Airlines

Fri 5/910:25 a.m.YOW - LHR

2 stops14h 30mUnited Airlines

Deal found 11/6C$ 1,028

Tue 14/106:50 a.m.LHR - YOW

2 stops12h 01mBrussels Airlines

Thu 23/101:55 p.m.YOW - LHR

2 stops13h 45mBrussels Airlines

Deal found 11/6C$ 1,113

Wed 9/71:05 p.m.LCY - YOW

2 stops39h 03mSWISS

Wed 16/73:55 p.m.YOW - LCY

2 stops21h 50mSWISS

Deal found 11/6C$ 1,180

Wed 10/911:35 a.m.LGW - YOW

2 stops17h 47mMultiple Airlines

Sun 14/95:55 a.m.YOW - LGW

2 stops22h 55mMultiple Airlines

Deal found 10/6C$ 794

Direct flights from London to Ottawa
Explore direct flight options from London to Ottawa based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 June 2025.

Thu 4/92:05 p.m.LHR - YOW

Nonstop7h 20mAir Canada

Thu 11/96:55 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Deal found 10/6C$ 954

Mon 23/62:05 p.m.LHR - YOW

Nonstop7h 20mLufthansa

Thu 4/96:55 p.m.YOW - LHR

Nonstop6h 35mLufthansa

Deal found 10/6C$ 1,001

Thu 21/82:05 p.m.LHR - YOW

Nonstop7h 20mMultiple Airlines

Thu 28/86:55 p.m.YOW - LHR

Nonstop6h 35mMultiple Airlines

Deal found 11/6C$ 1,382

Mon 23/62:05 p.m.LHR - YOW

Nonstop7h 20mAustrian Airlines

Wed 3/99:00 p.m.YOW - LHR

Nonstop6h 35mAustrian Airlines

Deal found 10/6C$ 3,742

Last-minute flights from London to Ottawa
Discover last-minute flight deals from London to Ottawa. Data last updated 12 June 2025 and is based on user searches.

Wed 11/66:50 a.m.LHR - YOW

2 stops12h 00mBrussels Airlines

Sun 29/63:55 p.m.YOW - LHR

2 stops13h 20mBrussels Airlines

Deal found 10/6C$ 983

Fri 13/66:00 a.m.LHR - YOW

2 stops40h 04mSWISS

Mon 16/66:40 p.m.YOW - LHR

2 stops21h 50mSWISS

Deal found 10/6C$ 980

Thu 19/612:40 p.m.LGW - YOW

1 stop16h 42mMultiple Airlines

Fri 4/73:25 p.m.YOW - LGW

2 stops37h 25mMultiple Airlines

Deal found 10/6C$ 971

Thu 19/66:50 a.m.LHR - YOW

2 stops11h 54mMultiple Airlines

Fri 4/75:50 p.m.YOW - LHR

1 stop31h 05mMultiple Airlines

Deal found 10/6C$ 997

Thu 19/66:00 a.m.LHR - YOW

2 stops16h 05mAustrian Airlines

Sun 22/67:55 p.m.YOW - LHR

1 stop29h 40mAustrian Airlines

Deal found 10/6C$ 1,036

Thu 19/67:00 a.m.LHR - YOW

2 stops17h 00mSWISS

Sun 22/61:55 p.m.YOW - LHR

2 stops22h 55mSWISS

Deal found 10/6C$ 1,459

Thu 19/610:45 a.m.LGW - YOW

2 stops18h 37mWestJet

Fri 4/75:55 a.m.YOW - LGW

2 stops22h 30mWestJet

Deal found 10/6C$ 1,624

Fri 20/69:40 a.m.LGW - YOW

1 stop16h 21mAir Transat

Thu 4/92:20 p.m.YOW - LGW

1 stop15h 25mAir Transat

Deal found 10/6C$ 909

Sat 21/66:30 a.m.LHR - YOW

2 stops22h 50mLufthansa

Thu 4/96:55 p.m.YOW - LHR

Nonstop6h 35mLufthansa

Deal found 10/6C$ 967

Sat 21/66:50 p.m.LHR - YOW

2 stops34h 32mDelta

Sat 30/85:55 a.m.YOW - LHR

2 stops22h 20mDelta

Deal found 10/6C$ 995

Sat 21/66:50 p.m.LHR - YOW

2 stops34h 32mDelta

Sun 31/85:55 a.m.YOW - LHR

2 stops22h 20mDelta

Deal found 10/6C$ 995

Sun 22/66:50 a.m.LHR - YOW

2 stops11h 54mAir Canada

Wed 3/96:10 p.m.YOW - LHR

1 stop21h 50mAir Canada

Deal found 10/6C$ 961

One-way flights from London to Ottawa
Search for one-way flight options from London to Ottawa. Find affordable one-way fares based on user searches. Data last updated 12 June 2025.

Wed 20/83:40 p.m.LHR - YOW

2 stops31h 05mMultiple Airlines

Deal found 11/6C$ 474

Wed 25/68:15 a.m.STN - YOW

2 stops21h 07mMultiple Airlines

Deal found 11/6C$ 541

Wed 25/68:50 a.m.LGW - YOW

2 stops20h 32mMultiple Airlines

Deal found 11/6C$ 559

Thu 31/77:00 a.m.LCY - YOW

2 stops22h 22mMultiple Airlines

Deal found 10/6C$ 721

Sun 14/910:45 a.m.LGW - YOW

2 stops18h 37mWestJet

Deal found 10/6C$ 752

Tue 1/79:40 a.m.LGW - YOW

1 stop27h 25mAir Transat

Deal found 10/6C$ 796

Sun 14/99:50 a.m.LHR - YOW

2 stops19h 29mAer Lingus

Deal found 10/6C$ 813

Sun 14/92:10 p.m.LHR - YOW

1 stop29h 36mWestJet

Deal found 10/6C$ 978

Wed 25/68:30 a.m.LHR - YOW

1 stop13h 35mLufthansa

Deal found 10/6C$ 1,042

Wed 25/68:40 a.m.LHR - YOW

2 stops17h 30mAir Canada

Deal found 11/6C$ 1,188

Fri 1/86:05 p.m.LCY - YOW

2 stops30h 00mAer Lingus

Deal found 11/6C$ 1,656

Sun 14/91:45 p.m.LCY - YOW

2 stops15h 37mKLM

Deal found 10/6C$ 1,851

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 2/9

5:50 p.m.-12:22 a.m.

1 stop11h 32m

Ottawa

Sun 7/9

5:20 p.m.-4:35 p.m.

1 stop18h 15m

C$ 680

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 29/8

5:50 p.m.-12:22 a.m.

1 stop11h 32m

Ottawa

Fri 5/9

5:15 p.m.-8:00 a.m.

1 stop9h 45m

C$ 738

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 25/6

6:30 a.m.-3:05 p.m.

2 stops13h 35m

Ottawa

Mon 21/7

5:15 p.m.-10:45 a.m.

2 stops12h 30m

C$ 746

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 8/7

6:15 a.m.-3:05 p.m.

1 stop13h 50m

Ottawa

Wed 16/7

5:15 p.m.-10:30 a.m.

1 stop12h 15m

C$ 764

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Wed 10/9

11:35 a.m.-12:22 a.m.

2 stops17h 47m

Ottawa

Sun 14/9

5:55 a.m.-9:50 a.m.

2 stops22h 55m

C$ 794

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Sat 8/11

11:40 a.m.-6:22 p.m.

1 stop11h 42m

Ottawa

Wed 12/11

6:25 a.m.-9:45 a.m.

1 stop22h 20m

C$ 875

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Wed 27/8

12:00 p.m.-12:22 a.m.

2 stops17h 22m

Ottawa

Wed 3/9

5:55 a.m.-10:00 a.m.

2 stops23h 05m

C$ 922

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 28/8

5:50 p.m.-12:22 a.m.

1 stop11h 32m

Ottawa

Mon 1/9

5:55 a.m.-8:50 a.m.

2 stops21h 55m

C$ 947

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 30/8

5:40 p.m.-11:08 p.m.

1 stop10h 28m

Ottawa

Sat 6/9

9:00 p.m.-8:35 a.m.

Nonstop6h 35m

C$ 953

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 24/6

8:30 a.m.-12:20 a.m.

2 stops20h 50m

Ottawa

Thu 4/9

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

Nonstop6h 35m

C$ 967

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 33 results

Best time to book a flight from London to Ottawa

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

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

The price you pay for your flight from London to Ottawa may vary depending on when you book. For the best chance of a lower fare, look to book 88 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 to Ottawa?

Currently, October is the cheapest month in which you can book a flight from London to Ottawa (average of C$ 224). Flying from London to Ottawa in December is currently the most expensive (average of C$ 326). 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 LON to YOW?

A simple way to save on the total cost of your ticket is to fly from London to Ottawa in the morning. If you’re flexible enough to do this you can expect to save up to 7% on your trip compared to booking a flight in the afternoon.

Rainfall in Ottawa by month

In terms of precipitation, rainfall in Ottawa ranges from 50.0 - 93.0 mm per month. June is typically the wettest month, when rainfall can reach 93.0 mm. February is typically the driest time to visit Ottawa when rainfall is around 50.0 mm.

Temperature in Ottawa by month

If weather is an important factor for your trip to Ottawa, 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 -10.0 C).

Reviews of airlines servicing Ottawa

Peruse reviews from past customers who have flown with Delta, KLM and Air Transat from London to Ottawa to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,950 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Delta

8.0

Very good

7,950 reviews

Delta

8.0

Very good

7,950 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very good

7,950 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Air Transat

7.8

Good

396 reviews

Delta

8.0

Very good

7,950 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Air France

7.5

Good

1,463 reviews

Delta

8.0

Very good

7,950 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

SWISS

7.5

Good

1,623 reviews

Delta

8.0

Very good

7,950 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Related info for your journey

What airport do you fly into for flights to Ottawa from London?
Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly into when you book flights from London to Ottawa. 3 airlines have flights to Ottawa from London on a regular basis. Booking flights from London to Ottawa should not be difficult; the airport handles an average of 1 inbound flight from London per day.
What are the cheapest airlines flying from London to Ottawa round-trip?
Our cheapest airline available from London to Ottawa is Air France. Our recent data shows that you can find tickets from as low as C$ 680 on this airline. Additional options worth looking into are KLM and Virgin Atlantic, starting at C$ 746 and C$ 764 round-trip. These flights start at 33% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London to Ottawa one-way?
C$ 752 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Transat and Aer Lingus, with prices starting from C$ 796 and C$ 813, respectively.
What are the most popular routes from London to Ottawa?
When deciding which route to take from London to Ottawa consider London Heathrow - Ottawa, London Gatwick - Ottawa or London City - Ottawa as they are the most popular.
What are the most reliable airlines from London to Ottawa?
Before booking your flight to Ottawa from London, check out the most reliable airlines to get you to your destination on time: Air Canada (97%), Aegean Airlines (97%), Austrian Airlines( 97%).
What are the cheapest flights from London to Ottawa?
The cheapest flight price from London to Ottawa is C$ 923. On average you can expect to pay C$ 2,090. The most popular route, (London Heathrow - Ottawa), can usually be booked for C$ 636.
Can I find deals for flights from London to Ottawa that include hotel bookings?
Yes. In addition to deals on London to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from London to Ottawa?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Ottawa.
Can I find deals for business class flights from London to Ottawa?
Yes. Cheapflights offers flight deals from London 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 to Ottawa?
Currently, October is the cheapest month in which you can book a flight from London to Ottawa (average of C$ 224). Flying from London to Ottawa in December is currently the most expensive (average of C$ 326). 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

Gatineau

Brockville

Perth

Smiths Falls

Prescott

Pembroke

Wakefield

Lanark

Browse thousands of different options on Cheapflights for your next trip

Other flights to Ottawa

Top 3 airlines flying from London to Ottawa

Airline	Cheapest	Average	Flexibility	On-time
Air France	CheapestC$ 728	AverageC$ 972	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Canada	CheapestC$ 824	AverageC$ 1,041	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	CheapestC$ 845	AverageC$ 1,076	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Fly with Cheapflights

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

When you search for this flight from London 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 London to Ottawa?

Cheapflights helps you find that perfect flight to Ottawa from London 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 London to Ottawa with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Ottawa flexibly with Cheapflights today.

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

Yes! Start tracking prices for London to Ottawa flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from London to Ottawa from C$ 474

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London to Ottawa are usually found in January or February, booked 88 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap flight deals from London to Ottawa

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Find flight deals from London to Ottawa

Cheapest flights from London to OttawaExplore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Explore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

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Use the filters below to find and compare flights from London to Ottawa that are best for you.

Best time to book a flight from London to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Ottawa

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

Use this chart to determine the optimal time to book a round-trip flight from London to Ottawa. Price data was last updated on 9 June 2025.

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

What is the cheapest time of day to fly from LON to YOW?

Find hourly flight availability from London 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 12 June 2025.

Rainfall in Ottawa by month

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

Temperature in Ottawa by month

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

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 12 June 2025.

Peruse reviews from past customers who have flown with Delta, KLM and Air Transat from London to Ottawa to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London 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?

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

What are the cheapest airlines to fly from London to Ottawa one-way?

What are the most popular routes from London to Ottawa?

What are the most reliable airlines from London to Ottawa?

What are the cheapest flights from London to Ottawa?

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

How can I find direct flights from London to Ottawa?

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

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

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Alternative routes for London to Ottawa

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Top 3 airlines flying from London to Ottawa

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Cheapest flights from London to Ottawa
Explore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.