LON - YOW

$514 Find Cheap Flights from London to Ottawa - Compare and Save

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Everything you should know

Cheapest round-trip
$731
Typical prices: $608-$858
United Airlines
Mon 11/19Sat 11/24
LHR - YOW • 2 stops
Cheapest non-stop
$906
Typical prices: $598-$886
Lufthansa
Wed 11/21Wed 11/28
LHR - YOW • Non-stop
Nonstop flights
You can fly direct with Air Canada. Average duration is 8h
Direct flights
+1
Direct flights
+1
Top routes
Cheapest • 29% average savings
Most popular
Insights
Insights
Avoid delays
Most punctual • 90% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 10 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $735 (round-trip)
Shortest trip • 10h 09m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from London to Ottawa (LON-YOW)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from London to Ottawa

Thu, Nov 19 - Tue, Nov 24
United Airlines Logo
6:35 am - 7:27 pmLHR  London Heathrow-YOW Ottawa
17h 52m2 stops Munich Franz Josef Strauss Washington, D.C. Dulles Intl
United Airlines Logo
6:00 am - 10:50 amYOW  Ottawa-LHR London Heathrow
23h 50m2 stops Newark Washington, D.C. Dulles Intl
$731United Airlines
Thu, Nov 19 - Thu, Dec 3
United Airlines Logo
6:35 am - 7:27 pmLHR  London Heathrow-YOW Ottawa
17h 52m2 stops Munich Franz Josef Strauss Washington, D.C. Dulles Intl
United Airlines Logo
6:00 am - 10:50 amYOW  Ottawa-LHR London Heathrow
23h 50m2 stops Newark Washington, D.C. Dulles Intl
$732United Airlines
Fri, Jan 29 - Sun, Feb 7
Air Transat Logo
11:40 am - 5:54 pmLGW  London Gatwick-YOW Ottawa
11h 14m1 stop Toronto Pearson Intl
Air Transat Logo
5:40 pm - 9:45 amYOW  Ottawa-LGW London Gatwick
11h 05m1 stop Toronto Pearson Intl
$733Air Transat
Fri, Nov 20 - Sun, Nov 22
United Airlines Logo
7:30 am - 9:56 pmLHR  London Heathrow-YOW Ottawa
19h 26m2 stops Frankfurt am Main Newark
United Airlines Logo
6:00 am - 6:40 amYOW  Ottawa-LHR London Heathrow
19h 40m2 stops Newark Washington, D.C. Reagan-National
$733United Airlines
Sat, Nov 14 - Thu, Dec 3
United Airlines Logo
7:30 am - 9:56 pmLHR  London Heathrow-YOW Ottawa
19h 26m2 stops Frankfurt am Main Newark
United Airlines Logo
6:00 am - 6:40 amYOW  Ottawa-LHR London Heathrow
19h 40m2 stops Newark Washington, D.C. Dulles Intl
$733United Airlines
Thu, Dec 10 - Fri, Jan 15
United Airlines Logo
7:30 am - 9:56 pmLHR  London Heathrow-YOW Ottawa
19h 26m2 stops Frankfurt am Main Newark
United Airlines Logo
6:00 am - 6:40 amYOW  Ottawa-LHR London Heathrow
19h 40m2 stops Newark Washington, D.C. Dulles Intl
$733United Airlines
Mon, Jan 11 - Thu, Jan 21
United Airlines Logo
7:30 am - 9:56 pmLHR  London Heathrow-YOW Ottawa
19h 26m2 stops Frankfurt am Main Newark
United Airlines Logo
6:00 am - 6:40 amYOW  Ottawa-LHR London Heathrow
19h 40m2 stops Newark Washington, D.C. Dulles Intl
$745United Airlines
Mon, Jan 18 - Sun, Jan 24
United Airlines Logo
7:30 am - 9:56 pmLHR  London Heathrow-YOW Ottawa
19h 26m2 stops Frankfurt am Main Newark
United Airlines Logo
6:00 am - 6:40 amYOW  Ottawa-LHR London Heathrow
19h 40m2 stops Newark Washington, D.C. Dulles Intl
$745United Airlines
Wed, Jan 20 - Wed, Feb 10
Air Canada Logo
9:00 am - 1:40 amLHR  London Heathrow-YOW Ottawa
21h 40m2 stops Halifax Intl Toronto Pearson Intl
Air Canada Logo
9:15 am - 9:00 pmYOW  Ottawa-LHR London Heathrow
6h 45mnonstop
$803Air Canada
Tue, Jan 26 - Wed, Feb 10
Air Canada Logo
9:00 am - 12:40 amLHR  London Heathrow-YOW Ottawa
20h 40m2 stops Halifax Intl Toronto Pearson Intl
Air Canada Logo
9:15 am - 9:00 pmYOW  Ottawa-LHR London Heathrow
6h 45mnonstop
$803Air Canada
Booking Insights

Price, demand and travel trends for London to Ottawa flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from London to Ottawa?

Round-trip flights from London to Ottawa typically range from $608 to $858. The lowest price found in the past 5 days was $731, on United Airlines.

What is the cheapest London to Ottawa flight route?

London Gatwick Airport (LGW) to Ottawa (YOW) is the cheapest London to Ottawa route, averaging $585 round-trip. Other London to Ottawa routes average $940, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from London to Ottawa?

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from London to Ottawa. It’s 2% cheaper than the average day, while Monday is the most expensive, with prices 3% higher.

What’s the cheapest month to fly from London to Ottawa?

•June is the cheapest month to fly from London to Ottawa at $583 round-trip.
•December ($863) and January ($776) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 48% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from London to Ottawa the cheapest?

Flights from London to Ottawa are cheapest 10 weeks before departure. Booking in this window typically costs about 14% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for London to Ottawa flights

Low season

February

Cheapest flight

$514
Beat the crowds with an average 56% drop in travelers.
The most popular month to fly with an average 100% increase in travelers.
One-way flight from London Heathrow Airport to Ottawa

When to book flights from London to Ottawa

Are your dates flexible? Find out the best times to travel from London to Ottawa based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your London to Ottawa flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from London to Ottawa?

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

    • Earliest: departs at 9:00 am and lands at 5:00 pm
    • Latest: departs at 1:25 pm and lands at 9:25 pm.

    The flight takes about 8h.

  • What cabin classes can I book on flights from London to Ottawa?

    Three cabin classes are available on flights from London to Ottawa:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • How long is a flight from London to Ottawa?

    A nonstop flight from London to Ottawa takes 8h, covering 3,332 miles.

  • Do I need a passport to fly from London to Ottawa?

    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.

  • How much should I expect to pay for a London to Ottawa flight?

    Round-trip flights from London to Ottawa range from $608 to $858, with an average of $726 over the past 12 months. Anything below $608 counts as a good deal.

  • How expensive are last-minute London to Ottawa flights?

    Last-minute fares on this route (booked within two weeks of departure) run 6% above the $726 route average. Book 10 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from London to Ottawa?

    On this route, nonstop and layover fares are close on average, with nonstop at $735 round-trip and layover options via Paris Charles de Gaulle (CDG) at $735.

  • What is the standard checked-bag allowance on flights from London to Ottawa?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $56–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Have flight prices from London to Ottawa changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $731 to $3,604. That means the highest observed fare was about 5x higher than the lowest one.

  • Which airlines offer Wi-Fi on London to Ottawa flights?

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

    • Air Canada
    • Lufthansa

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

  • How are flight prices from London to Ottawa looking right now?

    One-way fares from London to Ottawa are currently lower than usual. Average one-way flight prices are about $555, which is 8% below the typical average for this route.

  • What car rental options are available at Ottawa Airport (YOW)?

    Ottawa Airport (YOW) hosts 5 major car rental companies, with daily rates starting from around $13 for economy cars. Top options include:

    • Routes Car & Truck Rentals
    • Europcar
    • Alamo
    • Budget
    • Enterprise Rent-A-Car

  • Which airports can I use when flying from London to Ottawa?

    Flights from London to Ottawa may depart from 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). Flights usually arrive at Ottawa (YOW).

  • What time of day has the fewest delays on flights from London to Ottawa?

    Afternoon flights have the fewest delays on this route, while morning departures tend to have the most.

  • At what point is a flight considered delayed from London to Ottawa?

    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 London to Ottawa route, 11% of flights were delayed in the past 3 months, with delays averaging 2h 46m.

  • Which airports do connecting flights from London to Ottawa pass through?

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

    • Paris Charles de Gaulle (CDG) - 51% of one-stop connections
    • Toronto Pearson Intl (YYZ) - 26% of one-stop connections
    • Montreal Pierre Elliott Trudeau Intl (YUL) - 17% of one-stop connections
    • Newark (EWR) - 3% of one-stop connections

  • Can I save money by using flexible dates for flights from London to Ottawa?

    Yes. Flexible dates can save you up to 5% on flights from London to Ottawa. Friday is the cheapest departure day at $716 round-trip on average, while Monday is the most expensive at $750, a difference of $34.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from London to Ottawa?

    Only Air Canada operates flights between London and Ottawa.

  • How much time can I save by choosing a different layover airport from London to Ottawa?

    Flying via Montreal Pierre Elliott Trudeau Intl (YUL) gives the shortest average 1-stop total travel time at 10h 09m, compared with 10h 24m via London Heathrow (LHR) and 11h 11m via Newark (EWR).

  • What is the time difference between London and Ottawa?

    Ottawa is 4 hours behind London (Eastern Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Ottawa?

    Some of the most popular sights in Ottawa are Garden of the Provinces and Territories, Nepean Sportsplex and Major's Hill Park. These are among the most viewed places in Ottawa on KAYAK.

  • Which airlines offer extra legroom and free seat selection on London to Ottawa flights?

    Among airlines operating London to Ottawa flights:

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

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

  • Which airlines include bags at no extra cost on London to Ottawa flights?

    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 always check the fare details before booking.

  • Can I take a direct flight between London airports and Ottawa Airport?

    Unfortunately you cannot fly directly between these two cities, but there are plenty of indirect routes you can take that only require one stop. You can fly, for example, with WestJet from London Gatwick Airport, which requires a transfer at Toronto Pearson International first. Alternatively, you could fly from Heathrow Airport with Air Canada, which also has a change in Toronto.

  • Can I fast track through security at London airports?

    If you are going to be in a rush at the airport, or should you be travelling at peak times, there is always the option to fast track through security. You need to book at least 24h in advance, and it will cost about £4 at Luton and around £5 at Stansted and Gatwick. For flights from Heathrow, it costs approximately £12.50 to fast track through security.

  • Can I change my currency at London airports?

    Once you have arrived at London airports for your flight, you can use currency exchange bureaus to change your money to Canadian Dollars. If you fly with Air Canada from Heathrow, you will most likely depart from Terminal 2, so you can access the Travelex bureaus and ATMs. From other airports with indirect flights, you can use an International Currency Exchange store or ATM. These are situated prominently in the terminals, so they will be easy to find.

  • How do I get to the city centre from Ottawa Airport?

    It’s easy to get from the airport to the centre as there are many methods of transport to choose from. You can get the Ottawa Airport Bus route 97 from the front of the building. This takes about 30min and costs approx. C$3.30 (£1.90). Alternatively, you could get a taxi from the taxi rank outside the front of the terminal building which takes about 15min and costs around C$29 (£16.75).

Your guide to booking London to Ottawa flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Monday. On this route, Friday flights average $716, about $34 less than Monday fares (5% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 10 weeks before you fly. On this route, that window historically saves about 14% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your London to Ottawa trip for June. Fares historically average $583 round-trip in that month - typically $280 less than the most expensive month, which is December (based on the last 12 months).
  • For the best chance of arriving on time, fly with Air Canada. Over the past three months, 90% of Air Canada flights from London to Ottawa arrived on time, slightly above the route average of 89%. When flights on this route arrive late, they're delayed by an average of 2h 46m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you have the time, taking a 1-stop flight through Paris Charles de Gaulle Airport (CDG) can be cheaper than flying direct. The cheapest layover option averages $735 round-trip on this route - about $0 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ottawa Airport.

    • Hilton Garden Inn Ottawa Airport
    • Hampton Inn by Hilton Ottawa Airport
    • Ramada by Wyndham Ottawa On The Rideau
  • There are two airports in London that serve the route to Ottawa International Airport (YOW) with one stop. With London Heathrow (LHR) being located so centrally, it makes it very convenient for those travelling on business. Whereas Gatwick is great for those coming from the south of London.
  • Save time on the day of your flight by staying in an airport hotel the night before. If you're flying with Air Canada from Heathrow, then you can opt for a hotel such as Aerotel, which is only a short walk from Terminal 2. At Gatwick you could stay at Hilton, which is also close to the terminal building.
  • From Ottawa Airport, it is easy to continue your journey to nearby cities, such as Cornwall in about 70min and Kingston in about 2h, which makes it a great airport if you are planning to continue your journey to other Canadian cities.
  • Before your flight to Ottawa Airport, you can relax in a peaceful lounge, such as the Aspire Lounges in Heathrow Airport, Gatwick Airport and Luton Airport (LTN), which provide complimentary snacks and Wi-Fi from about £25 per person. The Escape lounge in Stansted (STN) offers similar benefits for about £20. However, there are no lounges at London city Airport.
  • You can call up 48h in advance of your flight to get mobility assistance at London Airports. They will either greet you on arrival or you can locate the assistance reception desks in the check-in zones of the departures hall.

Prefer to fly direct from London to Ottawa?

 
Find which airlines fly direct from London to Ottawa Airport, which days they fly and book direct flights.

Direct departures

London to Ottawa

Monday

Air Canada

Air Canada

Thursday

Air Canada

Air Canada

Saturday

Air Canada

Air Canada

See more direct flights

Direct returns

Ottawa to London

Monday

Air Canada

Air Canada

Wednesday

Air Canada

Air Canada

Thursday

Air Canada

Air Canada

Friday

Air Canada

Air Canada

Saturday

Air Canada

Air Canada

Sunday

Air Canada

Air Canada

See more direct flights

More options for your flight from London to Ottawa

Complete your trip to Ottawa with a hotel stay or car rental