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Cheap flights from Ottawa to London, ON from C$ 220

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 17/8. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — YXU
28 Aug — 4 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap 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 29 July 2026.

Fri 11/98:15 p.m.
YOW
-
YXU
1 stop9h 05m
WestJet
Sun 13/96:10 a.m.
YXU
-
YOW
1 stop9h 10m
WestJet
Deal found 27/7C$ 495
Sat 5/94:15 p.m.
YOW
-
YXU
1 stop13h 05m
WestJet
Sun 6/92:40 p.m.
YXU
-
YOW
2 stops9h 40m
WestJet
Deal found 28/7C$ 504
Fri 11/98:15 p.m.
YOW
-
YXU
1 stop9h 05m
WestJet
Fri 18/95:55 p.m.
YXU
-
YOW
1 stop11h 40m
WestJet
Deal found 28/7C$ 545
Sat 22/812:25 p.m.
YOW
-
YXU
1 stop25h 25m
WestJet
Sat 29/85:55 p.m.
YXU
-
YOW
2 stops17h 40m
WestJet
Deal found 25/7C$ 570
Fri 25/98:15 p.m.
YOW
-
YXU
1 stop9h 05m
WestJet
Sat 3/106:10 a.m.
YXU
-
YOW
1 stop11h 05m
WestJet
Deal found 26/7C$ 571
Wed 23/98:15 p.m.
YOW
-
YXU
1 stop9h 05m
WestJet
Tue 29/96:10 a.m.
YXU
-
YOW
1 stop11h 05m
WestJet
Deal found 26/7C$ 605

Find 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 29 July 2026.

Round-trip from

C$ 495

One-way from

C$ 220

Popular in

November

Cheapest in

July

Average price

C$ 559
WestJet
  • WestJet
  • 11/9-13/9
  • 2 total stops
  • 18h 15m total
  • Ottawa to London
Search Deals
WestJet
  • WestJet
  • 17/8
  • 1 total stop
  • 25h 25m total
  • Ottawa to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 270 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 29 July 2026.
Use the filters below to find and compare flights from Ottawa to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 11/9

8:15 p.m.-5:20 a.m.

1 stop9h 05m

London

Sun 13/9

6:10 a.m.-3:20 p.m.

1 stop9h 10m

C$ 495

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 25/9

8:15 p.m.-5:20 a.m.

1 stop9h 05m

London

Sat 3/10

6:10 a.m.-5:15 p.m.

1 stop11h 05m

C$ 614

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 11/9

2:00 p.m.-5:20 a.m.

2 stops15h 20m

London

Fri 18/9

5:55 p.m.-5:35 a.m.

1 stop11h 40m

C$ 626

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Wed 23/9

8:15 p.m.-5:20 a.m.

1 stop9h 05m

London

Tue 29/9

6:10 a.m.-5:15 p.m.

1 stop11h 05m

C$ 646

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Wed 16/9

8:55 p.m.-4:45 p.m.

2 stops19h 50m

London

Wed 23/9

6:10 a.m.-3:20 p.m.

1 stop9h 10m

C$ 700

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Thu 24/9

5:10 a.m.-9:20 a.m.

1 stop4h 10m

London

Thu 24/9

3:30 p.m.-9:20 p.m.

1 stop5h 50m

C$ 763

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Sat 8/8

12:25 p.m.-1:50 p.m.

1 stop25h 25m

London

Sat 15/8

5:55 p.m.-3:20 p.m.

1 stop21h 25m

C$ 772
Quickest round-trip

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Thu 29/10

9:10 a.m.-2:47 p.m.

1 stop5h 37m

London

Wed 11/11

3:25 p.m.-7:45 p.m.

1 stop4h 20m

C$ 777

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Sat 8/8

6:25 p.m.-1:50 p.m.

2 stops19h 25m

London

Sat 15/8

6:10 a.m.-11:35 a.m.

2 stops29h 25m

C$ 831
Cheapest one-way

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Mon 17/8

12:25 p.m.-1:50 p.m.

1 stop25h 25m

C$ 220

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/7

Showing 1-10 of 19 resultsSorted by cheapest first
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, July is the cheapest month in which you can book a flight from Ottawa to London, Ontario (average of C$ 559). Flying from Ottawa to London, Ontario in November is currently the most expensive (average of C$ 1,209). 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.

How much does it cost to fly round-trip from Ottawa to London, Ontario?

Airfare is below average for this route at the moment.

Ottawa to London, Ontario flights typically cost between C$ 1,024 and C$ 1,346 in September.
The cheapest round-trip price found within the last 5 days was C$ 495 on WestJet (11 Sep-13 Sep).

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 29 July 2026.
Get a feel of what it's like to fly with 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.
Air Canada
7.1
Good
11,404 reviews
Check prices

Overall

7.1

Boarding

7.3

Entertainment

6.8

Comfort

7.1

Food

6.3

Crew

7.8

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.
Air Canada
7.1
Good
11,404 reviews
Air Canada
7.1
Good
11,404 reviews
Check prices

Overall

7.1

Boarding

7.3

Entertainment

6.8

Comfort

7.1

Food

6.3

Crew

7.8

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.

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 9h 05m. Fly via WestJet to get the fastest option. The distance from Ottawa to London, Ontario is about 505 km.

  • What is the cheapest airline to fly from Ottawa to London, Ontario round-trip?

    Air Canada, at C$ 450, was found to be the cheapest airline from Ottawa to London, Ontario.. Air Canada is 43% 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, July is the cheapest month in which you can book a flight from Ottawa to London, Ontario (average of C$ 559). Flying from Ottawa to London, Ontario in November is currently the most expensive (average of C$ 1,209). 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

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Alternative routes for Ottawa to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Ottawa to London

Discover the top airline 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 29 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 450AverageC$ 755FlexibilityNo 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.

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