Find flights
When to book
Airlines
FAQs

Cheap flights from Ottawa to London, ON from C$ 288

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 19/11. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — YXU
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Ottawa to London

Enter your travel dates to find the best prices.

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 27 October 2025.

Fri 28/116:05 p.m.YOW - YXU
1 stop3h 16mAir Canada
Sun 7/125:40 p.m.YXU - YOW
1 stop5h 28mAir Canada
Deal found 26/10C$ 623
Thu 11/1212:05 p.m.YOW - YXU
1 stop5h 00mAir Canada
Thu 18/129:25 a.m.YXU - YOW
1 stop5h 58mAir Canada
Deal found 26/10C$ 663
Wed 10/124:15 p.m.YOW - YXU
1 stop5h 06mAir Canada
Wed 17/129:25 a.m.YXU - YOW
1 stop5h 58mAir Canada
Deal found 25/10C$ 665
Fri 21/114:10 p.m.YOW - YXU
1 stop5h 11mAir Canada
Sun 23/119:25 a.m.YXU - YOW
1 stop3h 53mAir Canada
Deal found 24/10C$ 676
Fri 28/115:40 a.m.YOW - YXU
2 stops13h 32mWestJet
Sun 7/128:10 p.m.YXU - YOW
1 stop28h 30mWestJet
Deal found 26/10C$ 708
Sun 30/116:05 p.m.YOW - YXU
1 stop3h 16mAir Canada
Sun 4/19:25 a.m.YXU - YOW
1 stop3h 53mAir Canada
Deal found 26/10C$ 712
Thu 11/125:45 p.m.YOW - YXU
1 stop12h 49mMultiple Airlines
Thu 18/125:10 a.m.YXU - YOW
2 stops8h 53mMultiple Airlines
Deal found 26/10C$ 723
Fri 26/125:00 a.m.YOW - YXU
1 stop3h 46mAir Canada
Mon 29/125:40 p.m.YXU - YOW
1 stop3h 38mAir Canada
Deal found 25/10C$ 756
Sun 21/122:05 p.m.YOW - YXU
1 stop3h 00mAir Canada
Sun 4/19:25 a.m.YXU - YOW
1 stop3h 53mAir Canada
Deal found 26/10C$ 802
Fri 21/115:40 a.m.YOW - YXU
2 stops13h 32mMultiple Airlines
Sun 23/118:10 p.m.YXU - YOW
1 stop18h 20mMultiple Airlines
Deal found 24/10C$ 865

Cheap flight deals from Ottawa to London

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to London (YXU). 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 27 October 2025.

Round-trip from

C$ 623

One-way from

C$ 288

Popular in

June

Cheapest in

September

Average price

C$ 679
Air Canada
  • Air Canada
  • 28/11-7/12
  • 2 total stops
  • 8h 44m total
  • Ottawa to London
Search Deals
19/11
  • 19/11
  • 1 total stop
  • 24h 17m total
  • Ottawa to London
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to London 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 27 October 2025.
Use the filters below to find and compare flights from Ottawa to London that are best for you.

Fly from

Ottawa

Fly to

London

Route

Depart

Return

Price

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 28/11

6:05 p.m.-9:21 p.m.

1 stop3h 16m

London

Sun 7/12

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

1 stop5h 28m

C$ 623

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Thu 11/12

12:05 p.m.-5:05 p.m.

1 stop5h 00m

London

Thu 18/12

9:25 a.m.-3:23 p.m.

1 stop5h 58m

C$ 663

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Wed 10/12

4:15 p.m.-9:21 p.m.

1 stop5h 06m

London

Wed 17/12

9:25 a.m.-3:23 p.m.

1 stop5h 58m

C$ 665

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 21/11

4:10 p.m.-9:21 p.m.

1 stop5h 11m

London

Sun 23/11

9:25 a.m.-1:18 p.m.

1 stop3h 53m

C$ 676

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Tue 24/3

5:45 p.m.-6:35 a.m.

1 stop12h 50m

London

Wed 25/3

8:10 p.m.-4:53 p.m.

1 stop20h 43m

C$ 687

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 28/11

5:40 a.m.-7:12 p.m.

2 stops13h 32m

London

Sun 7/12

8:10 p.m.-12:40 a.m.

1 stop28h 30m

C$ 708

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Sun 30/11

6:05 p.m.-9:21 p.m.

1 stop3h 16m

London

Sun 4/1

9:25 a.m.-1:18 p.m.

1 stop3h 53m

C$ 712

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 2/1

5:00 a.m.-8:46 a.m.

1 stop3h 46m

London

Mon 12/1

9:25 a.m.-3:23 p.m.

1 stop5h 58m

C$ 712

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Thu 11/12

5:45 p.m.-6:34 a.m.

1 stop12h 49m

London

Thu 18/12

5:10 a.m.-2:03 p.m.

2 stops8h 53m

C$ 723

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Wed 19/11

6:55 p.m.-7:12 p.m.

1 stop24h 17m

C$ 288

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/10

Showing 1-10 of 17 results
1
2

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 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

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

Currently, May is the cheapest month in which you can book a flight from Ottawa to London, Ontario (average of C$ 85). Flying from Ottawa to London, Ontario in August is currently the most expensive (average of C$ 175). 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 YXU?

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 27 October 2025.

When flying from Ottawa to London, Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 55% versus a flight at noon.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 27 October 2025.
Get a feel of what it's like to fly with WestJet and Air Canada from Ottawa to London by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
WestJet
7.2
Good
3,148 reviews
Check prices

Comfort

7.1

Overall

7.2

Entertainment

6.1

Boarding

7.4

Crew

7.9

Food

6.2

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight
WestJet
7.2
Good
3,148 reviews
WestJet
7.2
Good
3,148 reviews
Check prices

Comfort

7.1

Overall

7.2

Entertainment

6.1

Boarding

7.4

Crew

7.9

Food

6.2

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight
Air Canada
7.1
Good
10,370 reviews
WestJet
7.2
Good
3,148 reviews
Check prices

Comfort

7.1

Overall

7.2

Entertainment

6.1

Boarding

7.4

Crew

7.9

Food

6.2

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight

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.

  • How long is the flight from Ottawa to London, Ontario?

    There are many flights that can get you from Ottawa to London, Ontario in 3h 16m. Fly via Air Canada or WestJet to get the fastest option. The distance from Ottawa to London, Ontario is about 505 km. This flight may include one or multiple stops.

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

    WestJet, at C$ 378, was found to be the cheapest airline from Ottawa to London, Ontario. An alternate airline flying to your destination would be Air Canada. WestJet is 57% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 vacation 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, Ontario?

    Currently, May is the cheapest month in which you can book a flight from Ottawa to London, Ontario (average of C$ 85). Flying from Ottawa to London, Ontario in August is currently the most expensive (average of C$ 175). 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 London?

Book flights to London if you plan to visit one of these locations
Port Stanley
Grand Bend

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.
Pearson Intl to Pierre Elliott Trudeau Intl flights
Pierre Elliott Trudeau Intl to Pearson Intl flights
Toronto Island to Pierre Elliott Trudeau Intl flights
Pierre Elliott Trudeau Intl to Toronto Island flights
Ottawa to Pearson Intl flights
Thunder Bay to Pearson Intl flights
Pearson Intl to Ottawa flights
Thunder Bay to Toronto Island flights
Toronto Island to Ottawa flights
Pearson Intl to Thunder Bay flights
Ottawa to Toronto Island flights
Toronto Island to Thunder Bay flights
Timmins to Toronto Island flights
Ottawa to Hamilton flights
Hamilton to Pierre Elliott Trudeau Intl flights
Sudbury to Toronto Island flights
Pierre Elliott Trudeau Intl to Hamilton flights
Windsor to Toronto Island flights
Hamilton to Ottawa flights
Thunder Bay to Ottawa flights
Pierre Elliott Trudeau Intl to Ottawa flights
Pearson Intl to London flights
Ottawa to Pierre Elliott Trudeau Intl flights
Windsor to Pierre Elliott Trudeau Intl flights
Toronto Island to Timmins flights
Thunder Bay to Hamilton flights
Windsor to Ottawa flights
Toronto Island to Sudbury flights
Thunder Bay to Pierre Elliott Trudeau Intl flights
Region of Waterloo Intl to Pierre Elliott Trudeau Intl flights
Ottawa to Thunder Bay flights
London to Pierre Elliott Trudeau Intl flights
Toronto Island to Sault Ste Marie flights
Windsor to Pearson Intl flights
Pierre Elliott Trudeau Intl to Windsor flights
Toronto Island to Windsor flights
Hamilton to Thunder Bay flights
Ottawa to Windsor flights
Sault Ste Marie to Toronto Island flights
Timmins to Pearson Intl flights
Pearson Intl to Windsor flights
Pearson Intl to Sault Ste Marie flights
London to Ottawa flights
Sudbury to Ottawa flights
Pierre Elliott Trudeau Intl to Sudbury flights
Sudbury to Pearson Intl flights
Pearson Intl to Sudbury flights
Sault Ste Marie to Pierre Elliott Trudeau Intl flights
Sault Ste Marie to Thunder Bay flights

Top 2 airlines flying from Ottawa to London

Discover the top 2 airlines that operate flights from Ottawa to London. 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 27 October 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 378AverageC$ 579FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 554AverageC$ 946FlexibilityNo 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 Ottawa to London?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ottawa to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ottawa to London.

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

Need flexible booking options for your flight to London from Ottawa? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on Ottawa to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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.