YOW - LON

C$ 396 Find Cheap Flights from Ottawa to London – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
C$ 834
Typical prices: C$ 899-C$ 1,264
Multiple Airlines
Sun 11/11Sat 17/11
YOW - LTN • 2 stops
Cheapest direct flights
C$ 894
Typical prices: C$ 960-C$ 1,306
Air Canada, Lufthansa
Sun 14/10Sun 21/10
YOW - LHR • Direct
Direct flights
You can fly direct with Air Canada and Air Transat. Average duration is 6h 44m
Direct flights
+1
Direct flights
+1
Top routes
Cheapest • 8% average savings
Most popular
Insights
Insights
Avoid delays
Most punctual • 89% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 7 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 11% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg C$ 995 (round-trip)
Shortest trip • 10h 09m (one-way)
Insights
Insights
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to London!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Ottawa to London (YOW-LON)

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

Recent round-trip flight deals from Ottawa to London

Wed, 11 Nov - Tue, 17 Nov
Multiple Airlines Logo
10:50 a.m. - 8:50 p.m.YOW  Ottawa-LTN London Luton
29h 00m2 stops Montreal Pierre Elliott Trudeau Intl Madrid Barajas
Multiple Airlines Logo
7:45 a.m. - 9:52 p.m.LTN  London Luton-YOW Ottawa
19h 07m3 stops Madrid Barajas Montreal Pierre Elliott Trudeau Intl Toronto Island
C$ 834Multiple Airlines
Wed, 11 Nov - Tue, 17 Nov
Multiple Airlines Logo
10:50 a.m. - 1:45 p.m.YOW  Ottawa-LTN London Luton
21h 55m2 stops Montreal Pierre Elliott Trudeau Intl Madrid Barajas
Multiple Airlines Logo
7:45 a.m. - 10:32 p.m.LTN  London Luton-YOW Ottawa
19h 47m2 stops Madrid Barajas Montreal Pierre Elliott Trudeau Intl
C$ 846Multiple Airlines
Wed, 14 Oct - Wed, 21 Oct
Air Canada Logo
9:55 a.m. - 6:30 a.m.YOW  Ottawa-LHR London Heathrow
15h 35m2 stops Toronto Island Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
8:40 a.m. - 10:10 p.m.LHR  London Heathrow-YOW Ottawa
18h 30m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
C$ 880Air Canada
Wed, 14 Oct - Wed, 21 Oct
Air Canada Logo
11:15 a.m. - 6:30 a.m.YOW  Ottawa-LHR London Heathrow
14h 15m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
8:40 a.m. - 10:10 p.m.LHR  London Heathrow-YOW Ottawa
18h 30m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
C$ 880Air Canada
Sun, 15 Nov - Sun, 22 Nov
Air France Logo
5:10 p.m. - 7:55 a.m.YOW  Ottawa-LHR London Heathrow
9h 45m1 stop Paris Charles de Gaulle
Air France Logo
8:55 a.m. - 3:00 p.m.LHR  London Heathrow-YOW Ottawa
11h 05m1 stop Paris Charles de Gaulle
C$ 903Air France
Sun, 15 Nov - Sun, 22 Nov
Virgin Atlantic Logo
5:10 p.m. - 7:55 a.m.YOW  Ottawa-LHR London Heathrow
9h 45m1 stop Paris Charles de Gaulle
Virgin Atlantic Logo
6:20 a.m. - 3:00 p.m.LHR  London Heathrow-YOW Ottawa
13h 40m1 stop Paris Charles de Gaulle
C$ 908Virgin Atlantic
Sun, 15 Nov - Sun, 22 Nov
Virgin Atlantic Logo
5:10 p.m. - 3:45 p.m.YOW  Ottawa-LGW London Gatwick
17h 35m1 stop Paris Charles de Gaulle
Virgin Atlantic Logo
10:00 a.m. - 3:00 p.m.LGW  London Gatwick-YOW Ottawa
10h 00m1 stop Paris Charles de Gaulle
C$ 913Virgin Atlantic
Sun, 15 Nov - Sun, 22 Nov
Air France Logo
5:10 p.m. - 1:45 p.m.YOW  Ottawa-LHR London Heathrow
15h 35m1 stop Paris Charles de Gaulle
Air France Logo
6:20 a.m. - 3:00 p.m.LHR  London Heathrow-YOW Ottawa
13h 40m1 stop Paris Charles de Gaulle
C$ 913Air France
Sun, 14 Feb - Tue, 2 Mar
Air Transat Logo
7:00 a.m. - 9:45 a.m.YOW  Ottawa-LGW London Gatwick
21h 45m1 stop Toronto Pearson Intl
Air Transat Logo
11:40 a.m. - 10:15 p.m.LGW  London Gatwick-YOW Ottawa
15h 35m1 stop Toronto Pearson Intl
C$ 932Air Transat
Mon, 1 Mar - Wed, 17 Mar
Air Transat Logo
10:20 a.m. - 9:45 a.m.YOW  Ottawa-LGW London Gatwick
18h 25m1 stop Toronto Pearson Intl
Air Transat Logo
11:40 a.m. - 10:15 p.m.LGW  London Gatwick-YOW Ottawa
14h 35m1 stop Toronto Pearson Intl
C$ 952Air Transat
Booking Insights

Price, demand, and travel trends for Ottawa to London flights

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

What is the cheapest Ottawa to London flight route?

Ottawa (YOW) to London Stansted Airport (STN) is the cheapest Ottawa to London route, averaging C$ 852 round-trip. Other Ottawa to London routes average C$ 956, based on KAYAK data over the past 12 months.

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

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from Ottawa to London. It’s 8% cheaper than the average day, while Saturday is the most expensive, with prices 8% higher.

What is the cheapest month to fly from Ottawa to London?

•January is the cheapest month to fly from Ottawa to London at C$ 951 round-trip.
•July (C$ 1,268) and December (C$ 1,267) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 33% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Ottawa to London the cheapest?

Flights from Ottawa to London are cheapest 7 weeks before departure. Booking in this window typically costs about 17% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Ottawa to London

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Mark Stachiew

Mark Stachiew

Expert on YOW

Mark Stachiew has been exploring the world and writing about it for more than 30 years. His travel stories have appeared in numerous newspapers, magazines and online publications in Canada, the United States and beyond.

Duncan Madden

Duncan Madden

Expert on LHR

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Key details for Ottawa to London flights

Low season

December

Cheapest flight

C$ 396
The most popular month to fly with an average 48% increase in traveller numbers.
One-way flight from Ottawa to London Heathrow Airport

When to book flights from Ottawa to London

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

Your Ottawa to London 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 Ottawa to London?

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

    • Earliest: departs at 9:15 am and lands at 3:59 pm
    • Latest: departs at 10:40 pm and lands at 5:24 am.

    The flight takes about 6h 44m.

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

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

    • Economy Class
    • Premium Economy Class
    • Business Class

  • How long does a flight from Ottawa to London take?

    A direct flight from Ottawa to London takes 6h 44m, covering 8,630 km.

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

    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 Ottawa to London flight?

    Round-trip flights from Ottawa to London range from C$ 899 to C$ 1,264, with an average of C$ 1,071 over the past 12 months. Anything below C$ 899 counts as a good deal.

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

    Last-minute fares on this route (booked within two weeks of departure) run 4% above the C$ 1,071 route average. Book 7 weeks before departure for the lowest fares.

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

    On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 995 round-trip via Toronto Pearson Intl (YYZ), compared to C$ 1,118 for direct.

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

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 43–C$ 142 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

  • Have flight prices from Ottawa to London 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 C$ 834 to C$ 4,938. That means the highest observed fare was about 6x higher than the lowest one.

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

    Air Canada is the only airline on the Ottawa to London route offering in-flight Wi-Fi. Pricing depends on fare class.

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

    One-way fares from Ottawa to London are currently in line with typical prices for this route. Average one-way fares are about C$ 734.

  • What car rental options are available in London?

    Since London is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near London Heathrow Airport (LHR) – daily rates from around C$ 10:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

    Near London Gatwick Airport (LGW) – daily rates from around C$ 12:

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

    Near London City Airport (LCY) – daily rates from around C$ 15:

    • GREEN MOTION
    • Budget
    • Hertz
    • Avis
    • Sixt

    Near London Luton Airport (LTN) – daily rates from around C$ 15:

    • GREEN MOTION
    • DRIVALIA
    • Alamo
    • Europcar
    • Budget

    Near London Stansted Airport (STN) – daily rates from around C$ 14:

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

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

    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).

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

    Evening flights have the fewest delays on this route, while night departures tend to have the most.

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

    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 three months, with delays averaging 1h 59m.

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

    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

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

    Yes. Flexible dates can save you up to 16% on flights from Ottawa to London. Friday is the cheapest departure day at C$ 987 round-trip on average, while Saturday is the most expensive at C$ 1,166, a difference of C$ 179.

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

  • Which airlines fly from Ottawa to London?

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

    • Air Canada
    • Air Transat

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

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

  • What is the time difference between Ottawa and London?

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

  • Which popular places can I visit in London?

    Some of the most popular sights in London are Trafalgar Square, Hyde Park, and London Eye. These are among the most viewed places in London on KAYAK.

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

    Among airlines operating Ottawa to London flights:

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

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

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

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

    • Air Canada: a carry-on bag and a checked bag in Economy Class
    • Air Transat: a carry-on bag and a checked bag in Economy Class
    • Lufthansa: a carry-on bag and a checked bag in Economy Class

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

  • Are there facilities for travelling moms at Ottawa Macdonald-Cartier International Airport?

    Yes, there are breastfeeding rooms at YOW. The easily accessible breastfeeding room at Ottawa airport is located at Pre-security, Level 1, and is open 24 hours a day. This room is designed for mothers who need to breastfeed their infants or pump breast milk. It is equipped with a sink, a changing table, a comfortable chair, and a tv.

  • What passenger assistance services are there at Gatwick airport (GWT)?

    Gatwick Airport is committed to providing the highest possible standards of customer care and assistance to all passengers. The hidden disability services include the use of assistive technology to help passengers with hidden disabilities navigate the airport, as well as special assistance during the check-in, security, and boarding processes. There is a sensory room at the North terminal available for passengers who may need a calm and quiet space to relax before their flight.

  • How can I move out of Heathrow airport faster?

    If you want a faster way to get out of London Heathrow Airport, a taxi is usually the best deal. Every terminal has its taxi drop-off and pick-up area, so you can hop out of the plane and be inside a cab in a matter of minutes. Drivers are well-versed in the areas you wish to visit and are fully licensed by the appropriate authorities.

  • Are there airlines offering flights with stops from Ottawa to London?

    Several airlines offer flights with stops from Ottawa to London. This is especially important if you want more control over your itinerary, as you can choose your own layovers. You can check out Air Canada or Air Canada Express. These airlines offer flights with one or more stops between Ottawa and one of the London airports.

Your guide to booking Ottawa to London 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 Saturday. On this route, Friday flights average C$ 987, about C$ 179 less than Saturday fares (15% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 7 weeks before you fly. On this route, that window historically saves about 17% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Ottawa to London trip for January. Fares historically average C$ 951 round-trip in that month – typically C$ 317 less than the most expensive month, which is July (based on the last 12 months).
  • For the best chance of arriving on time, fly with Air Transat. Over the past three months, 89% of Air Transat flights from Ottawa to London arrived on time, slightly above the route average of 72%. When flights on this route arrive late, they're delayed by an average of 1h 59m, 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 Toronto Pearson Intl Airport (YYZ) can be cheaper than flying direct. The cheapest layover option averages C$ 995 round-trip on this route – about C$ 123 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, hotels close to the airport you're flying into can be a convenient option.

    Near London City Airport

    • Good Hotel London
    • Aloft London Excel
    • Novotel London Excel

    Near London Heathrow Airport

    • Hilton London Heathrow Airport

    Near London Gatwick Airport

    • Premier Inn London Gatwick Airport
  • The city of Ottawa is served by Gatineau-Ottawa Executive Airport (YND) and Ottawa Macdonald-Cartier International Airport (YOW). Ottawa Macdonald-Cartier Airport is the main airport serving the city, which is also well connected with an efficient public transport network. You can get to the airport from downtown Ottawa by OC Transpo bus, which is only 12 km away.
  • You can relax at Aspire Lounge or Air Canada Maple Leaf Lounge while waiting for your flight at YOW. The Aspire Lounge is located in the Domestic Terminal of the Ottawa International Airport (YOW). The lounge is located after the security near gate 20. Just outside gate 18, you'll find the entrance to the Aspire Salon Lounge on the right. To find the Maple leaf lounge, take the stairs before Gate 19 and go to level 1 to access the entrance.
  • You can leave your car in Ottawa International airport's long-term parking lot. It is located on the lot labeled parkade 4 (P4) on the surface lot. You can pay for parking at the long-term lot (P4) near the exit when you return from your trip.
  • If you arrive at London Heathrow Airport (LHR), you may enjoy a spa treatment at terminal 5B at gate 35. Be Relax spa offers a full range of treatments to help you unwind and feel revitalized. To help passengers unwind after lengthy trips, they employ several massage therapy and treatments.
  • If you're flying into London City Airport (LCY), you can request airport assistance from the airport staff. To easily get assistance from the staff at the Arrivals section, we recommend that you get a unique lanyard to wear. You can conveniently get a lanyard from the terminal's information desk.

Prefer to fly direct from Ottawa to London?

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

Direct departures

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 nonstop flights

Direct returns

London to Ottawa

Monday

Air Canada

Air Canada

Thursday

Air Canada

Air Canada

Saturday

Air Canada

Air Canada

See more nonstop flights

More options for your flight from Ottawa to London

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