£188 Find Cheap Flights from Ottawa to London – Compare and Save

Among airlines operating Ottawa to London flights:

• Air Canada: offers extra legroom; offers free seat selection
• Air Transat: offers free seat selection
• Lufthansa: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

2 airlines operate flights between Ottawa and London. The airlines offering direct flights on this route include:

• Air Canada
• Air Transat

Flights from Ottawa to London usually depart from Ottawa (YOW) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

Here are some options for this route, based on selected ticket types and cabin classes:

• Air Canada: a cabin bag and a checked bag in Economy class
• Air Transat: a cabin bag and a checked bag in Economy class
• Lufthansa: a cabin bag and a checked bag in Economy class

Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

Only Economy class is available on flights from Ottawa to London.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £523 return via Toronto Pearson Intl (YYZ), compared with £587 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £23–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

One-stop flights from Ottawa to London most commonly connect through:

• Toronto Pearson Intl (YYZ) – 56% of one-stop connections
• Paris Charles de Gaulle (CDG) – 18% of one-stop connections
• Montreal Pierre Elliott Trudeau Intl (YUL) – 17% of one-stop connections
• Halifax Intl (YHZ) – 4% of one-stop connections

Toronto Pearson Intl (YYZ) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 16% on the Ottawa to London route. Friday is the cheapest departure day at £518 return on average, while Saturday is the most expensive at £612, a difference of £94. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Ottawa to London route, 28% of flights were delayed in the past 3 months, with delays averaging 2 hours 7 minutes.

Some of the most popular sights in London are Hyde Park, Tower Bridge, and Royal Albert Hall. These are among the most viewed places in London on KAYAK.

These are the earliest and latest flight times available from Ottawa to London:

• Earliest: departs at 18:50 and lands at 01:36
• Latest: departs at 22:40 and lands at 05:26.

The flight takes about 6h 46m.

Last-minute fares on this route (booked within 2 weeks of departure) run 4% above the route average of £563. Book 7 weeks before departure for the lowest fares.

A direct flight from Ottawa to London takes 6h 46m, covering 3,332 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £378 to £2,840. That means the highest observed fare was about 8x higher than the lowest one.

One-way fares from Ottawa to London are currently lower than usual. Average one-way flight prices are about £257, which is 32% below the typical average for this route.

Evening flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via London Heathrow (LHR) gives the shortest average 1-stop total travel time of 10h 09m, compared to 10h 35m via Montreal Pierre Elliott Trudeau Intl (YUL) and 11h 11m via Halifax Intl (YHZ).

London is 5 hours ahead of Ottawa (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Since London is served by multiple airports, car hire options and rates can vary depending on which one you fly into.
Near London Heathrow Airport (LHR) – daily rates from around £5:

• GREEN MOTION
• DRIVALIA
• Europcar
• Alamo
• Hertz

Near London Gatwick Airport (LGW) – daily rates from around £6:

• GREEN MOTION
• DRIVALIA
• U-Save
• Europcar
• Alamo

Near London City Airport (LCY) – daily rates from around £8:

• GREEN MOTION
• Budget
• Hertz
• Avis
• Sixt

Near London Luton Airport (LTN) – daily rates from around £8:

• GREEN MOTION
• DRIVALIA
• Alamo
• Europcar
• Budget

Near London Stansted Airport (STN) – daily rates from around £7:

• GREEN MOTION
• DRIVALIA
• Europcar
• Alamo
• U-Save

Return flights from Ottawa to London range from £472 to £664, with an average of £563 over the past 12 months. Anything below £472 counts as a good deal.

Two airlines offer in-flight Wi-Fi on Ottawa to London flights:

• Air Canada
• Lufthansa

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty programme, while others are paid add-ons priced by flight length.