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

According to our current data, Lufthansa ($651), SWISS ($663), and United Airlines ($687) offers the cheapest pricing from Ottawa to London Heathrow Airport. You may be able to fly from Ottawa to London Heathrow Airport for 19% less than the average price by searching for these airlines.

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

$488 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Lufthansa and TAP AIR PORTUGAL, with prices starting from $702 and $2,476, respectively.

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

The cheapest flight price from Ottawa to London Heathrow Airport is $709. On average you can expect to pay $2,196. The most popular route, (Ottawa - London Heathrow), can usually be booked for $643.

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

Consider Air Canada, Air France or Lufthansa when booking your flight. These represent the most popular airlines when flying from Ottawa to London Heathrow Airport.

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

Users have found that flying from Ottawa to London Heathrow Airport on a Friday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

To save up to 23% on this flight, we recommend booking at least 36 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Ottawa to London Heathrow Airport from $711 1-2 weeks out and tickets from $857 for flights departing within the next 72 hours.

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

The best pricing can be found in the month of February. Prices to London Heathrow Airport from Ottawa average $778. You can even find prices in February for less than $778, as users have found deals to London Heathrow Airport from as low as $575. The month of December appears to be one of the more expensive times to travel to London Heathrow Airport from Ottawa. Flying in the targeted month can save you up to 20%.

Most accurate provider : When it comes to deals on Ottawa-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-London Heathrow Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ottawa-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to London Heathrow. You should not have trouble finding flights to London Heathrow from Ottawa; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Ottawa airport to London Heathrow. It is only a 6.6 mi journey to Ottawa (YOW) from Ottawa’s city center.

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

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

How can I find direct flights from Ottawa to Heathrow?

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

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

Yes. Cheapflights offers flight deals from Ottawa to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$419+ Flights from Ottawa to London Heathrow Airport

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in February or January, booked 9 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from Ottawa to Heathrow

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$651 (Lufthansa)
One-way from	$485 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$728
Good round-trip deal	$714 or less

Provider with most accurate pricing for Ottawa-London Heathrow flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ottawa-London Heathrow flights.

Search Deals

From Ottawa to London Heathrow

Search Deals

One-way flight from Ottawa to London Heathrow

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($24 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Price to beat on a round-trip flight from Ottawa to London Heathrow.

Search Deals

Find flight deals from Ottawa to Heathrow

Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Thu 4/246:55 pmYOW - LHR

Nonstop6h 35mLufthansa

Wed 5/76:55 amLHR - YOW

2 stops15h 09mLufthansa

Deal found 3/24

$649

Mon 3/317:15 amYOW - LHR

1 stop8h 45mAir Canada

Mon 4/712:40 pmLHR - YOW

1 stop15h 17mAir Canada

Deal found 3/24

$651

Wed 5/73:55 pmYOW - LHR

2 stops24h 50mSWISS

Wed 5/145:10 pmLHR - YOW

2 stops32h 59mSWISS

Deal found 3/24

$663

Sat 4/57:29 pmYOW - LHR

1 stop10h 11mUnited Airlines

Mon 4/1410:50 amLHR - YOW

2 stops28h 08mUnited Airlines

Deal found 3/24

$687

Sun 5/115:15 pmYOW - LHR

2 stops12h 30mMultiple Airlines

Mon 6/99:00 amLHR - YOW

1 stop11h 05mMultiple Airlines

Deal found 3/24

$704

Sun 5/115:15 pmYOW - LHR

2 stops12h 30mKLM

Mon 6/96:30 amLHR - YOW

2 stops13h 35mKLM

Deal found 3/24

$733

Sun 9/147:55 pmYOW - LHR

1 stop10h 55mAustrian Airlines

Tue 9/236:00 amLHR - YOW

2 stops16h 19mAustrian Airlines

Deal found 3/23

$890

Sun 4/275:55 amYOW - LHR

2 stops43h 30mDelta

Sat 5/109:35 amLHR - YOW

2 stops19h 47mDelta

Deal found 3/24

$922

Wed 5/214:05 pmYOW - LHR

2 stops23h 50mBrussels Airlines

Sun 5/257:45 amLHR - YOW

2 stops36h 19mBrussels Airlines

Deal found 3/24

$1,064

Sat 8/95:55 amYOW - LHR

2 stops25h 10mWestJet

Sun 8/172:10 pmLHR - YOW

1 stop15h 31mWestJet

Deal found 3/24

$1,240

Best flights from Ottawa to Heathrow
Discover carefully curated flight deals from Ottawa to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Sat 4/59:00 pmYOW - LHR

Nonstop6h 35mLufthansa

Mon 4/142:05 pmLHR - YOW

Nonstop7h 30mLufthansa

Deal found 3/24

$651

Thu 5/86:55 pmYOW - LHR

Nonstop6h 35mMultiple Airlines

Thu 5/158:40 amLHR - YOW

2 stops17h 29mMultiple Airlines

Deal found 3/24

$655

Wed 5/73:55 pmYOW - LHR

2 stops24h 50mSWISS

Wed 5/145:10 pmLHR - YOW

2 stops32h 59mSWISS

Deal found 3/24

$663

Sat 4/57:29 pmYOW - LHR

1 stop10h 11mUnited Airlines

Mon 4/1410:50 amLHR - YOW

2 stops28h 08mUnited Airlines

Deal found 3/24

$687

Mon 5/126:55 pmYOW - LHR

Nonstop6h 35mAir Canada

Sat 5/1712:40 pmLHR - YOW

Nonstop7h 30mAir Canada

Deal found 3/24

$732

Mon 6/25:15 pmYOW - LHR

2 stops12h 30mKLM

Sat 6/146:30 amLHR - YOW

2 stops13h 35mKLM

Deal found 3/24

$733

Sun 9/147:55 pmYOW - LHR

1 stop10h 55mAustrian Airlines

Tue 9/236:00 amLHR - YOW

2 stops16h 19mAustrian Airlines

Deal found 3/23

$890

Mon 4/285:55 amYOW - LHR

2 stops22h 00mDelta

Sat 5/106:50 pmLHR - YOW

2 stops34h 32mDelta

Deal found 3/24

$975

Wed 5/214:05 pmYOW - LHR

2 stops23h 50mBrussels Airlines

Sun 5/257:45 amLHR - YOW

2 stops36h 19mBrussels Airlines

Deal found 3/24

$1,064

Mon 4/75:15 pmYOW - LHR

1 stop15h 30mVirgin Atlantic

Mon 4/145:50 pmLHR - YOW

1 stop11h 19mVirgin Atlantic

Deal found 3/24

$1,730

Last-minute flights from Ottawa to Heathrow
Discover last-minute flight deals from Ottawa to Heathrow. Data last updated March 25, 2025 and is based on user searches.

Mon 3/317:15 amYOW - LHR

1 stop8h 45mAir Canada

Mon 4/712:40 pmLHR - YOW

1 stop15h 17mAir Canada

Deal found 3/24

$651

Mon 3/315:50 pmYOW - LHR

1 stop12h 35mUnited Airlines

Mon 4/74:00 pmLHR - YOW

2 stops27h 04mUnited Airlines

Deal found 3/24

$702

Mon 3/316:55 pmYOW - LHR

Nonstop6h 35mAir Canada

Mon 4/72:05 pmLHR - YOW

Nonstop7h 30mAir Canada

Deal found 3/24

$651

Wed 4/24:00 pmYOW - LHR

2 stops20h 50mSWISS

Sun 4/66:00 amLHR - YOW

2 stops18h 19mSWISS

Deal found 3/24

$1,066

Wed 4/25:15 pmYOW - LHR

1 stop9h 45mMultiple Airlines

Sun 4/62:45 pmLHR - YOW

2 stops14h 24mMultiple Airlines

Deal found 3/24

$1,082

Thu 4/36:55 pmYOW - LHR

Nonstop6h 35mLufthansa

Sat 5/312:40 pmLHR - YOW

Nonstop7h 30mLufthansa

Deal found 3/23

$684

Sat 4/57:29 pmYOW - LHR

1 stop10h 11mUnited Airlines

Mon 4/1410:50 amLHR - YOW

2 stops28h 08mUnited Airlines

Deal found 3/24

$687

Mon 4/74:00 pmYOW - LHR

2 stops34h 55mSWISS

Tue 4/228:05 pmLHR - YOW

2 stops50h 19mSWISS

Deal found 3/23

$663

Mon 4/75:15 pmYOW - LHR

1 stop15h 30mVirgin Atlantic

Mon 4/145:50 pmLHR - YOW

1 stop11h 19mVirgin Atlantic

Deal found 3/24

$1,730

Thu 4/106:15 amYOW - LHR

1 stop24h 50mWestJet

Fri 4/112:10 pmLHR - YOW

1 stop15h 34mWestJet

Deal found 3/24

$7,475

Thu 4/175:55 amYOW - LHR

1 stop23h 20mMultiple Airlines

Mon 4/215:15 pmLHR - YOW

1 stop11h 54mMultiple Airlines

Deal found 3/24

$791

Tue 4/225:15 pmYOW - LHR

2 stops12h 30mKLM

Wed 5/76:30 amLHR - YOW

2 stops13h 35mKLM

Deal found 3/24

$765

One-way flights from Ottawa to Heathrow
Search for one-way flight options from Ottawa to Heathrow. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Fri 4/259:50 amYOW - LHR

2 stops21h 05mMultiple Airlines

Deal found 3/23

$485

Fri 7/1112:20 pmYOW - LHR

2 stops18h 45mWestJet

Deal found 3/23

$488

Mon 4/76:55 pmYOW - LHR

Nonstop6h 35mLufthansa

Deal found 3/23

$702

Wed 5/289:00 pmYOW - LHR

Nonstop6h 35mTAP AIR PORTUGAL

Deal found 3/23

$2,476

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 4/24

2:45 pm-10:00 am

1 stop14h 15m

London Heathrow

Wed 5/7

6:55 am-5:04 pm

2 stops15h 09m

$649

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 5/7

3:55 pm-9:45 pm

2 stops24h 50m

London Heathrow

Wed 5/14

5:10 pm-9:09 pm

2 stops32h 59m

$663

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 4/5

7:29 pm-10:40 am

1 stop10h 11m

London Heathrow

Mon 4/14

10:50 am-9:58 am

2 stops28h 08m

$687

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 5/11

5:15 pm-10:45 am

2 stops12h 30m

London Heathrow

Mon 6/9

9:00 am-3:05 pm

1 stop11h 05m

$704

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 5/11

5:15 pm-10:45 am

2 stops12h 30m

London Heathrow

Mon 6/9

6:30 am-3:05 pm

2 stops13h 35m

$733

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 9/14

7:55 pm-11:50 am

1 stop10h 55m

London Heathrow

Tue 9/23

6:00 am-5:19 pm

2 stops16h 19m

$890

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 4/27

5:55 am-6:25 am

2 stops43h 30m

London Heathrow

Sat 5/10

9:35 am-12:22 am

2 stops19h 47m

$922

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 5/21

4:05 pm-8:55 pm

2 stops23h 50m

London Heathrow

Sun 5/25

7:45 am-3:04 pm

2 stops36h 19m

$1,064

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 8/9

5:55 am-12:05 pm

2 stops25h 10m

London Heathrow

Sun 8/17

2:10 pm-12:41 am

1 stop15h 31m

$1,240

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 4/7

5:15 pm-1:45 pm

1 stop15h 30m

London Heathrow

Mon 4/14

5:50 pm-12:09 am

1 stop11h 19m

$1,730

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 14 results

Compare providers for flights from Ottawa to Heathrow

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to Heathrow in March.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
Expedia	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Ottawa-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-London Heathrow Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ottawa-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ottawa to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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.

Cheapflights Insights

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

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

Booking 9 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of $661). Flying from Ottawa to London Heathrow Airport in June is currently the most expensive (average of $1,115). 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 LHR?

Unlike at noon, when flights are generally more expensive, you can save up to 8% on flights from Ottawa to London Heathrow Airport by exploring options for tickets in the evening.

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

Travelers seeking maximum savings on their Ottawa to London Heathrow Airport flight should consider departing on Thursday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Heathrow by month

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

See what other customers who have flown with Delta, KLM and Austrian Airlines from Ottawa to London have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,890 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,318 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines

7.5

Good

769 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,569 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,605 reviews

Delta

8.0

Very good

7,890 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly from for flights from Ottawa to London Heathrow?
Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to London Heathrow. You should not have trouble finding flights to London Heathrow from Ottawa; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Ottawa airport to London Heathrow. It is only a 6.6 mi journey to Ottawa (YOW) from Ottawa’s city center.
What are the cheapest airlines flying from Ottawa to London Heathrow Airport round-trip?
According to our current data, Lufthansa ($651), SWISS ($663), and United Airlines ($687) offers the cheapest pricing from Ottawa to London Heathrow Airport. You may be able to fly from Ottawa to London Heathrow Airport for 19% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Ottawa to London Heathrow Airport one-way?
$488 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Lufthansa and TAP AIR PORTUGAL, with prices starting from $702 and $2,476, respectively.
What are the cheapest flights from Ottawa to London Heathrow Airport?
The cheapest flight price from Ottawa to London Heathrow Airport is $709. On average you can expect to pay $2,196. The most popular route, (Ottawa - London Heathrow), can usually be booked for $643.
Can I find deals for flights from Ottawa to Heathrow that include hotel bookings?
Yes. In addition to deals on Ottawa to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ottawa to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Heathrow.
Can I find deals for business class flights from Ottawa to Heathrow?
Yes. Cheapflights offers flight deals from Ottawa to Heathrow 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 London Heathrow Airport?
Currently, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of $661). Flying from Ottawa to London Heathrow Airport in June is currently the most expensive (average of $1,115). 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.

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Top 3 airlines flying from Ottawa to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Air France	Cheapest$454	Average$598	FlexibilityNo cancel fee	On-time77%
Lufthansa	Cheapest$711	Average$782	FlexibilityNo cancel fee	On-time76%
Air Canada	Cheapest$713	Average$866	FlexibilityNo cancel fee	On-time67%

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$419+ Cheap flights from Ottawa (YOW) to Heathrow (LHR)

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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ottawa to Heathrow with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in February or January, booked 9 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from Ottawa to Heathrow

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Find flight deals from Ottawa to Heathrow

Cheapest flights from Ottawa to HeathrowExplore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Ottawa to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to Heathrow in March.

Best time to book a flight from Ottawa to Heathrow

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

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Heathrow. Price data was last updated on March 21, 2025.

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

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

Find hourly flight availability from Ottawa to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Ottawa to Heathrow. Price data was last updated on December 16, 2024.

Rainfall in Heathrow by month

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

Temperature in Heathrow by month

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

Reviews of airlines servicing Heathrow

See what other customers who have flown with Delta, KLM and Austrian Airlines from Ottawa to London have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

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

How can I find direct flights from Ottawa to Heathrow?

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

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

Traveling to a place near Ottawa?

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Alternative routes for Ottawa to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Ottawa to Heathrow

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Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.