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Cheap flights from Ottawa to London, ON from C$ 289

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 22/5. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — YXU
9 Apr — 16 Apr1
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 10 March 2026.

Fri 5/612:25 p.m.
YOW
-
YXU
2 stops16h 55m
WestJet
Sun 14/62:40 p.m.
YXU
-
YOW
1 stop20h 55m
WestJet
Deal found 6/3C$ 579
Fri 29/57:20 a.m.
YOW
-
YXU
1 stop9h 25m
WestJet
Tue 2/62:40 p.m.
YXU
-
YOW
2 stops9h 40m
WestJet
Deal found 5/3C$ 616
Thu 21/54:15 p.m.
YOW
-
YXU
2 stops21h 35m
Multiple Airlines
Tue 26/52:40 p.m.
YXU
-
YOW
1 stop24h 32m
Multiple Airlines
Deal found 7/3C$ 630
Thu 21/56:25 p.m.
YOW
-
YXU
2 stops19h 25m
WestJet
Tue 26/52:40 p.m.
YXU
-
YOW
2 stops9h 40m
WestJet
Deal found 7/3C$ 650
Tue 24/312:00 p.m.
YOW
-
YXU
1 stop5h 05m
Air Canada
Tue 31/35:40 p.m.
YXU
-
YOW
1 stop3h 36m
Air Canada
Deal found 5/3C$ 664
Fri 22/54:15 p.m.
YOW
-
YXU
1 stop24h 30m
WestJet
Sun 24/52:40 p.m.
YXU
-
YOW
2 stops9h 40m
WestJet
Deal found 9/3C$ 674
Thu 19/34:15 p.m.
YOW
-
YXU
1 stop5h 06m
Air Canada
Thu 26/35:40 p.m.
YXU
-
YOW
1 stop3h 38m
Air Canada
Deal found 5/3C$ 687
Thu 11/67:00 a.m.
YOW
-
YXU
1 stop4h 43m
Air Canada
Wed 17/69:30 a.m.
YXU
-
YOW
1 stop5h 41m
Air Canada
Deal found 7/3C$ 691

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 10 March 2026.

Round-trip from

C$ 579

One-way from

C$ 289

Popular in

June

Cheapest in

October

Average price

C$ 910
WestJet
  • WestJet
  • 5/6-14/6
  • 3 total stops
  • 37h 50m total
  • Ottawa to London
Search Deals
WestJet
  • WestJet
  • 22/5
  • 1 total stop
  • 9h 25m total
  • Ottawa to London
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 10 March 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 5/6

4:15 p.m.-5:20 a.m.

1 stop13h 05m

London

Sun 14/6

2:40 p.m.-11:35 a.m.

1 stop20h 55m

C$ 589

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 29/5

7:20 a.m.-4:45 p.m.

1 stop9h 25m

London

Tue 2/6

2:40 p.m.-12:20 a.m.

2 stops9h 40m

C$ 616

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Thu 21/5

4:15 p.m.-1:50 p.m.

2 stops21h 35m

London

Tue 26/5

2:40 p.m.-3:12 p.m.

1 stop24h 32m

C$ 630

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Tue 24/3

12:00 p.m.-5:05 p.m.

1 stop5h 05m

London

Tue 31/3

5:40 p.m.-9:16 p.m.

1 stop3h 36m

C$ 664

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 22/5

7:00 a.m.-11:43 a.m.

1 stop4h 43m

London

Sat 23/5

9:30 a.m.-3:11 p.m.

1 stop5h 41m

C$ 693

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Tue 21/4

5:40 a.m.-6:35 a.m.

2 stops24h 55m

London

Tue 28/4

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

1 stop11h 05m

C$ 721

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Thu 2/4

5:00 a.m.-8:44 a.m.

1 stop3h 44m

London

Thu 9/4

5:10 a.m.-11:06 a.m.

1 stop5h 56m

C$ 734

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 19/6

6:15 p.m.-5:20 a.m.

2 stops11h 05m

London

Sun 21/6

2:40 p.m.-5:35 a.m.

2 stops14h 55m

C$ 756
Quickest round-trip

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Sun 29/3

5:00 a.m.-8:43 a.m.

1 stop3h 43m

London

Sun 5/4

5:10 a.m.-9:21 a.m.

1 stop4h 11m

C$ 775
Cheapest one-way

OttawaLondon

YOW - YXU

YOWYXU

Ottawa

Fri 22/5

7:20 a.m.-4:45 p.m.

1 stop9h 25m

C$ 289

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/3

Showing 1-10 of 13 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, October is the cheapest month in which you can book a flight from Ottawa to London, Ontario (average of C$ 117). Flying from Ottawa to London, Ontario in August is currently the most expensive (average of C$ 170). 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.

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 10 March 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
10,800 reviews
Check prices

Entertainment

6.8

Overall

7.1

Comfort

7.1

Crew

7.8

Boarding

7.3

Food

6.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

YXE - YYZ

We were over three hours delayed leaving Saskatoon and missed our connection to Montreal. We were then rerouted all the way to Zurich. We were over seven hours late getting to our final destination. Then our luggage was lost for lost for three days. All three flights were delayed and our trip was definitely impacted.
Air Canada
7.1
Good
10,800 reviews
Air Canada
7.1
Good
10,800 reviews
Check prices

Entertainment

6.8

Overall

7.1

Comfort

7.1

Crew

7.8

Boarding

7.3

Food

6.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

YXE - YYZ

We were over three hours delayed leaving Saskatoon and missed our connection to Montreal. We were then rerouted all the way to Zurich. We were over seven hours late getting to our final destination. Then our luggage was lost for lost for three days. All three flights were delayed and our trip was definitely impacted.

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 13h 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$ 532, was found to be the cheapest airline from Ottawa to London, Ontario.. Air Canada is 37% 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, October is the cheapest month in which you can book a flight from Ottawa to London, Ontario (average of C$ 117). Flying from Ottawa to London, Ontario in August is currently the most expensive (average of C$ 170). 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 10 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 532AverageC$ 931FlexibilityNo 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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