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

Cheapflights users have booked flights from Ottawa to London round-trip from £485. Other airlines that can offer you cheap pricing are United Airlines, from £541, and Porter Airlines, from £549. Air France is priced at 22% lower than the current average price of a flight leaving 3 months from now.

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

£243 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Porter Airlines and Lufthansa, with prices starting from £345 and £549, respectively.

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

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

What are the most popular routes from Ottawa to London?

While some choose either Ottawa - London Gatwick or Ottawa - London City, Ottawa - London Heathrow is the most popular route from Ottawa to London.

What are the cheapest flights from Ottawa to London?

While on average a flight from Ottawa to London is generally £590, our data shows the cheapest flight currently is £558. When looking at the most popular route, (Ottawa - London Heathrow), you can expect to pay £502 for that flight.

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

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

Travelers have found it’s best to book a flight 36 days in advance to save up to 23% 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 36 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 Ottawa to London 1-2 weeks in advance for as low as £562, or £677 for flights within the next 24 hours.

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

Our data shows that February tends to be the cheapest month to fly to London from Ottawa. Users have commonly found prices around £623 for the month, but tickets can be as low as £454. Due to multiple factors, prepare for potentially higher prices in December.

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

Most people fly from Ottawa (YOW) if they book a flight from Ottawa to London. On average, Ottawa has 0 outbound flights to London per day from 2 airlines. Ottawa is conveniently located just 6.6 mi from Ottawa’s city center.

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

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

How can I find direct flights from Ottawa to London?

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

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

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

£232+ Flights from Ottawa to London

The best prices from Ottawa to London are usually found in February or January, booked 86 days in advance, depart on a Wednesday or Saturday and return on a Monday

Cheap flight deals from Ottawa to London

Round-trip from	£485
One-way from	£232
Popular in	December
Cheapest in	February
Average price	£540
Good round-trip deal	£558 or less

Air France
16/3-24/3
2 total stops
42h 50m total
Ottawa to London

Search Deals

25/3
1 total stop
37h 55m total
Ottawa to London

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (£10 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

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

Search Deals

Find flight deals from Ottawa to London

Cheapest flights from Ottawa to London
Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.

Sun 16/318:20YOW - LHR

1 stop18h 15mAir France

Mon 24/319:35LHR - YOW

1 stop24h 35mAir France

Deal found 21/2£485

Sun 16/318:20YOW - LHR

2 stops12h 25mMultiple Airlines

Mon 24/319:35LHR - YOW

1 stop24h 35mMultiple Airlines

Deal found 21/2£501

Sat 5/417:25YOW - LGW

2 stops35h 35mMultiple Airlines

Mon 14/408:40LGW - YOW

2 stops20h 29mMultiple Airlines

Deal found 21/2£526

Fri 28/210:30YOW - LHR

1 stop19h 35mUnited Airlines

Fri 7/308:55LHR - YOW

2 stops19h 59mUnited Airlines

Deal found 21/2£536

Sun 16/317:05YOW - LGW

1 stop12h 40mPorter Airlines

Mon 24/311:40LGW - YOW

1 stop16h 57mPorter Airlines

Deal found 21/2£549

Mon 10/309:50YOW - STN

2 stops20h 10mMultiple Airlines

Tue 18/311:00STN - YOW

2 stops26h 10mMultiple Airlines

Deal found 21/2£552

Tue 4/314:45YOW - LHR

1 stop11h 25mAir Canada

Wed 12/315:00LHR - YOW

1 stop22h 42mAir Canada

Deal found 21/2£565

Thu 8/507:00YOW - LGW

1 stop22h 45mAir Transat

Mon 26/512:40LGW - YOW

1 stop13h 21mAir Transat

Deal found 20/2£568

Thu 24/718:55YOW - LHR

Nonstop6h 35mLufthansa

Mon 18/814:05LHR - YOW

Nonstop7h 20mLufthansa

Deal found 21/2£568

Wed 4/605:55YOW - LGW

2 stops22h 30mWestJet

Mon 9/610:45LGW - YOW

2 stops18h 37mWestJet

Deal found 20/2£659

Fri 23/516:00YOW - LHR

2 stops23h 55mBrussels Airlines

Mon 9/611:05LHR - YOW

2 stops32h 59mBrussels Airlines

Deal found 21/2£667

Tue 18/305:55YOW - LHR

2 stops20h 30mDelta

Sun 13/416:50LHR - YOW

2 stops36h 19mDelta

Deal found 21/2£677

Best flights from Ottawa to London
Discover carefully curated flight deals from Ottawa to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 February 2025.

Sun 16/318:20YOW - LHR

1 stop18h 15mAir France

Mon 24/319:35LHR - YOW

1 stop24h 35mAir France

Deal found 21/2£485

Sun 16/318:20YOW - LHR

2 stops12h 25mMultiple Airlines

Mon 24/319:35LHR - YOW

1 stop24h 35mMultiple Airlines

Deal found 21/2£501

Sun 9/317:00YOW - LHR

1 stop14h 15mUnited Airlines

Fri 21/307:10LHR - YOW

2 stops20h 44mUnited Airlines

Deal found 21/2£541

Sun 16/317:05YOW - LGW

1 stop12h 40mPorter Airlines

Mon 24/311:40LGW - YOW

1 stop16h 57mPorter Airlines

Deal found 21/2£549

Tue 4/314:45YOW - LHR

1 stop11h 25mAir Canada

Wed 12/315:00LHR - YOW

1 stop22h 42mAir Canada

Deal found 21/2£565

Thu 8/507:00YOW - LGW

1 stop22h 45mAir Transat

Mon 26/512:40LGW - YOW

1 stop13h 21mAir Transat

Deal found 20/2£568

Thu 24/718:55YOW - LHR

Nonstop6h 35mLufthansa

Mon 18/814:05LHR - YOW

Nonstop7h 20mLufthansa

Deal found 21/2£568

Wed 4/605:55YOW - LGW

2 stops22h 30mWestJet

Mon 9/610:45LGW - YOW

2 stops18h 37mWestJet

Deal found 20/2£659

Fri 23/516:00YOW - LHR

2 stops23h 55mBrussels Airlines

Mon 9/611:05LHR - YOW

2 stops32h 59mBrussels Airlines

Deal found 21/2£667

Tue 18/305:55YOW - LHR

2 stops20h 30mDelta

Sun 13/416:50LHR - YOW

2 stops36h 19mDelta

Deal found 21/2£677

Sat 5/414:10YOW - LCY

2 stops36h 25mSWISS

Wed 9/409:25LCY - YOW

2 stops14h 54mSWISS

Deal found 21/2£715

Fri 16/517:15YOW - LHR

2 stops12h 30mKLM

Mon 19/514:45LHR - YOW

2 stops14h 37mKLM

Deal found 21/2£748

Last-minute flights from Ottawa to London
Discover last-minute flight deals from Ottawa to London. Data last updated 22 February 2025 and is based on user searches.

Wed 26/205:55YOW - LHR

2 stops48h 15mDelta

Tue 4/316:35LHR - YOW

2 stops36h 34mDelta

Deal found 20/2£674

Thu 27/214:50YOW - LGW

1 stop13h 55mAir Transat

Sun 2/311:40LGW - YOW

1 stop32h 30mAir Transat

Deal found 20/2£568

Thu 27/214:50YOW - LGW

1 stop13h 55mPorter Airlines

Mon 3/311:40LGW - YOW

1 stop11h 37mPorter Airlines

Deal found 20/2£568

Thu 27/214:50YOW - LGW

1 stop13h 55mMultiple Airlines

Tue 4/308:15LGW - YOW

2 stops21h 29mMultiple Airlines

Deal found 20/2£701

Thu 27/216:00YOW - LGW

2 stops20h 50mSWISS

Mon 3/318:45LGW - YOW

2 stops29h 37mSWISS

Deal found 20/2£829

Thu 27/216:00YOW - LCY

2 stops15h 50mSWISS

Mon 3/309:15LCY - YOW

2 stops15h 07mSWISS

Deal found 20/2£1,137

Thu 27/214:10YOW - LHR

2 stops13h 55mAer Lingus

Tue 4/309:50LHR - YOW

2 stops18h 57mAer Lingus

Deal found 20/2£1,190

Fri 28/210:30YOW - LHR

1 stop19h 35mUnited Airlines

Fri 7/308:55LHR - YOW

2 stops19h 59mUnited Airlines

Deal found 21/2£536

Fri 28/214:10YOW - LHR

1 stop11h 20mLufthansa

Tue 4/311:10LHR - YOW

1 stop11h 17mLufthansa

Deal found 20/2£945

Fri 28/216:00YOW - LHR

2 stops20h 50mSWISS

Sun 2/317:25LHR - YOW

2 stops28h 33mSWISS

Deal found 20/2£1,225

Tue 4/314:45YOW - LHR

1 stop11h 25mAir Canada

Wed 12/315:00LHR - YOW

1 stop22h 42mAir Canada

Deal found 21/2£565

Tue 4/309:50YOW - STN

2 stops19h 10mMultiple Airlines

Wed 12/311:00STN - YOW

2 stops26h 10mMultiple Airlines

Deal found 21/2£593

One-way flights from Ottawa to London
Search for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 22 February 2025.

Tue 25/318:55YOW - LHR

1 stop37h 55mMultiple Airlines

Deal found 21/2£232

Tue 25/320:10YOW - LHR

2 stops36h 40mWestJet

Deal found 21/2£243

Sun 6/409:25YOW - LGW

1 stop19h 35mMultiple Airlines

Deal found 21/2£258

Tue 25/308:40YOW - STN

3 stops21h 20mMultiple Airlines

Deal found 21/2£280

Tue 25/308:40YOW - LTN

3 stops33h 50mMultiple Airlines

Deal found 21/2£286

Thu 22/505:55YOW - SEN

3 stops45h 05mMultiple Airlines

Deal found 21/2£335

Sun 16/317:05YOW - LGW

1 stop12h 40mPorter Airlines

Deal found 21/2£345

Wed 14/505:55YOW - LGW

2 stops22h 30mWestJet

Deal found 21/2£352

Sun 6/405:55YOW - LCY

2 stops34h 45mMultiple Airlines

Deal found 21/2£352

Mon 28/418:55YOW - LHR

Nonstop6h 35mLufthansa

Deal found 21/2£549

Wed 7/521:00YOW - LHR

Nonstop6h 35mAir Canada

Deal found 21/2£579

Tue 25/318:10YOW - LCY

2 stops18h 55mSWISS

Deal found 20/2£633

Find flights from Ottawa to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 16/3

18:20-16:35

1 stop18h 15m

London Heathrow

Mon 24/3

19:35-16:10

1 stop24h 35m

£485

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 16/3

18:20-10:45

2 stops12h 25m

London Heathrow

Mon 24/3

19:35-16:10

1 stop24h 35m

£501

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 5/4

17:25-10:00

2 stops35h 35m

London Gatwick

Mon 14/4

08:40-00:09

2 stops20h 29m

£526

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 9/3

17:00-11:15

1 stop14h 15m

London Heathrow

Fri 21/3

07:10-23:54

2 stops20h 44m

£541

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 16/3

17:05-09:45

1 stop12h 40m

London Gatwick

Mon 24/3

11:40-00:37

1 stop16h 57m

£549

OttawaLondon

YOW - STN

YOWSTN

Ottawa

Mon 10/3

09:50-10:00

2 stops20h 10m

London Stansted

Tue 18/3

11:00-09:10

2 stops26h 10m

£552

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 4/3

14:45-07:10

1 stop11h 25m

London Heathrow

Wed 12/3

15:00-09:42

1 stop22h 42m

£565

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 8/5

14:20-10:45

1 stop15h 25m

London Gatwick

Wed 21/5

12:40-08:01

1 stop24h 21m

£568

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 24/7

18:55-06:30

Nonstop6h 35m

London Heathrow

Mon 18/8

14:05-16:25

Nonstop7h 20m

£568

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 4/6

05:55-09:25

2 stops22h 30m

London Gatwick

Mon 9/6

10:45-00:22

2 stops18h 37m

£659

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 37 results

Best time to book a flight from Ottawa to London

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

Travel insights for flights from Ottawa to London

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

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

The price you pay for your flight from Ottawa to London may vary depending on when you book. For the best chance of a lower fare, look to book 86 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 Ottawa to London?

Currently, January is the cheapest month in which you can book a flight from Ottawa to London (average of £112). Flying from Ottawa to London in August is currently the most expensive (average of £163). 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 LON?

It’s typically best to fly out from Ottawa to London in the evening. Doing so could potentially save you 17% on the flight price compared to flying at midday, which is usually more expensive.

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Read reviews from past customers who have flown Delta, Porter Airlines and KLM from Ottawa to London. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,213 reviews

Check prices

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

8,213 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

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.

Porter Airlines

7.9

Good

276 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

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

1,331 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

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.

Air Transat

7.8

Good

380 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

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

1,568 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

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?
Most people fly from Ottawa (YOW) if they book a flight from Ottawa to London. On average, Ottawa has 0 outbound flights to London per day from 2 airlines. Ottawa is conveniently located just 6.6 mi from Ottawa’s city center.
What are the cheapest airlines flying from Ottawa to London round-trip?
Cheapflights users have booked flights from Ottawa to London round-trip from £485. Other airlines that can offer you cheap pricing are United Airlines, from £541, and Porter Airlines, from £549. Air France is priced at 22% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Ottawa to London one-way?
£243 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Porter Airlines and Lufthansa, with prices starting from £345 and £549, respectively.
What are the most popular routes from Ottawa to London?
While some choose either Ottawa - London Gatwick or Ottawa - London City, Ottawa - London Heathrow is the most popular route from Ottawa to London.
What are the cheapest flights from Ottawa to London?
While on average a flight from Ottawa to London is generally £590, our data shows the cheapest flight currently is £558. When looking at the most popular route, (Ottawa - London Heathrow), you can expect to pay £502 for that flight.
Can I find deals for flights from Ottawa to London that include hotel bookings?
Yes. In addition to deals on Ottawa to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ottawa to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to London.
Can I find deals for business class flights from Ottawa to London?
Yes. Cheapflights offers flight deals from Ottawa to London 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?
Currently, January is the cheapest month in which you can book a flight from Ottawa to London (average of £112). Flying from Ottawa to London in August is currently the most expensive (average of £163). 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

Deal

Hounslow

Milton Keynes

Croydon

Gatwick

Slough

Luton

Ilford

Hayes

Eastbourne

Wembley

Southend-on-Sea

Ipswich

Winchester

Maidstone

Crawley

Southall

Watford

Dartford

Stansted

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Ottawa to London

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest£553	Average£638	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Porter Airlines	Cheapest£575	Average£627	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from Ottawa today with Cheapflights!

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

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

Yes, we can. To see specific flights from Ottawa to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

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

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Ottawa to London from £232

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 25/3. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from Ottawa to London are usually found in February or January, booked 86 days in advance, depart on a Wednesday or Saturday and return on a Monday

Cheap flight deals from Ottawa to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Find flight deals from Ottawa to London

Cheapest flights from Ottawa to LondonExplore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.

Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.

Find flights from Ottawa to London within your budget

Best time to book a flight from Ottawa to London

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

Travel insights for flights from Ottawa to London

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

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

Use this chart to determine the optimal time to book a return flight from Ottawa to London. Price data was last updated on 14 February 2025.

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

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

Find hourly flight availability from Ottawa to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 February 2025.

Rainfall in London by month

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

Temperature in London by month

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

Reviews of airlines servicing London

Read reviews from past customers who have flown Delta, Porter Airlines and KLM from Ottawa to London. You can also see how each airline stacks up 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 Ottawa to London. 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?

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

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

What are the most popular routes from Ottawa to London?

What are the cheapest flights from Ottawa to London?

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

How can I find direct flights from Ottawa to London?

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

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

Travelling to a place near Ottawa?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ottawa to London

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

Top 2 airlines flying from Ottawa to London

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 Ottawa to London?

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

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

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

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Travel Smart

Cheapest flights from Ottawa to London
Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.