The Houses of Parliament and Big Ben in London, with a red double-decker bus crossing the Lambeth Bridge.

S$359 Cheap Flights from Ottawa to London

View S$359 flight on Sun, 27 Sept, 2026Opens in a new window

Popular airlines from Ottawa International Airport (YOW) to London

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Cheap Flights from Ottawa to London (YOW-LON)

Prices were available within the past 7 days and start at S$359 for one-way flights and S$1,057 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Sat, 26 Sept - Sat, 3 Oct
YOW
Ottawa
LHR
London
S$1,057 Return, found 2 days ago
S$1,057
Return
found 2 days ago
Select KLM flight, departing Sat, 26 Sept from Ottawa to London, returning Sat, 3 Oct, priced at S$1,057 found 2 days ago
KLM
Sat, 26 Sept - Sat, 3 Oct
YOW
Ottawa
LHR
London
S$1,093 Return, found 2 days ago
S$1,093
Return
found 2 days ago
Select KLM flight, departing Sat, 26 Sept from Ottawa to London, returning Sat, 3 Oct, priced at S$1,093 found 2 days ago
Virgin Atlantic
Sat, 26 Sept - Sat, 3 Oct
YOW
Ottawa
LHR
London
S$1,193 Return, found 2 days ago
S$1,193
Return
found 2 days ago
Select Virgin Atlantic flight, departing Sat, 26 Sept from Ottawa to London, returning Sat, 3 Oct, priced at S$1,193 found 2 days ago
Virgin Atlantic
Sat, 26 Sept - Sat, 3 Oct
YOW
Ottawa
LHR
London
S$1,193 Return, found 2 days ago
S$1,193
Return
found 2 days ago
Select Virgin Atlantic flight, departing Sat, 26 Sept from Ottawa to London, returning Sat, 3 Oct, priced at S$1,193 found 2 days ago
KLM
Sat, 26 Sept - Sat, 3 Oct
YOW
Ottawa
LHR
London
S$1,268 Return, found 2 days ago
S$1,268
Return
found 2 days ago
Select KLM flight, departing Sat, 26 Sept from Ottawa to London, returning Sat, 3 Oct, priced at S$1,268 found 2 days ago
KLM
Sat, 26 Sept - Sat, 3 Oct
YOW
Ottawa
LHR
London
S$1,268 Return, found 2 days ago
S$1,268
Return
found 2 days ago
Select KLM flight, departing Sat, 26 Sept from Ottawa to London, returning Sat, 3 Oct, priced at S$1,268 found 2 days ago
Virgin Atlantic
Sat, 26 Sept - Sat, 3 Oct
YOW
Ottawa
LHR
London
S$1,309 Return, found 2 days ago
S$1,309
Return
found 2 days ago
Select Virgin Atlantic flight, departing Sat, 26 Sept from Ottawa to London, returning Sat, 3 Oct, priced at S$1,309 found 2 days ago
British Airways
Sat, 26 Sept - Sat, 3 Oct
YOW
Ottawa
LHR
London
S$1,314 Return, found 2 days ago
S$1,314
Return
found 2 days ago
Select British Airways flight, departing Sat, 26 Sept from Ottawa to London, returning Sat, 3 Oct, priced at S$1,314 found 2 days ago
Air Canada
Sat, 26 Sept - Sat, 3 Oct
YOW
Ottawa
LHR
London
S$1,323 Return, found 2 days ago
S$1,323
Return
found 2 days ago
Select Air Canada flight, departing Sat, 26 Sept from Ottawa to London, returning Sat, 3 Oct, priced at S$1,323 found 2 days ago
Lufthansa
Sat, 26 Sept - Sat, 3 Oct
YOW
Ottawa
LHR
London
S$1,346 Return, found 2 days ago
S$1,346
Return
found 2 days ago
Select Lufthansa flight, departing Sat, 26 Sept from Ottawa to London, returning Sat, 3 Oct, priced at S$1,346 found 2 days ago

Find the cheapest month to fly from Ottawa (YOW) to London (LON)

September is typically the cheapest month to fly

From S$629 - S$961 per traveller.

Travel information

Origin airport
Macdonald-Cartier Intl.
Destination airport
Heathrow
Return price
S$1,056
Distance
5315 km

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Perfect flights from Ottawa to London

Your Journey from Ottawa to London

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Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Air Transat, British Airways, Porter Airlines, Air Canada, Virgin Atlantic, KLM, Lufthansa. Our selection of flights from Macdonald-Cartier Intl. to LON-All Airports caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Ottawa to London Flights

Experience the joy of finding cheap flights from Macdonald-Cartier Intl. to LON-All Airports that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$359 and roundtrip prices from S$1,057*.
 

Pre-Flight Essentials

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Experience the Vibrant London

Picture yourself stepping off the plane in London and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Ottawa to London Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Ottawa to London.
 

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Book Your Flight from Ottawa to London with Confidence

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Ottawa to London

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