Fastest€614.92
- Air Canada AC260106:438h 7m14:50Ottawa YOWLondon LHR
Door to door 11h 17mCO2 817.4 kgChanges 0Fixed, no changes
Ottawa to London flight
Flights from Ottawa to London start at €583.65 and take 11h 17m at their fastest.
The Flights from Ottawa to London starts at €583.65 and takes 11h 17m door to door, run by 1 operator over 5,523 km, with around 4 departures a day. Fares bottom out about 30 days before departure.
- 11h 17mDoor to door
- 8h 7mMoving
- €583.65From
- 817.4 kgCO2
The cheapest and the fastest on September 29, 2026
Two journeys we can sell today, with the service number each operator files them under.
Airlines
Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.
| Operator | From | Fastest | Typical speed | Flexibility | On board |
|---|---|---|---|---|---|
 Air Canada | €563.00 | 10h 36m | 740 km/h | Fixed fare | Not published |
London is big enough that where you sleep decides what the days look like. We sell the seat, not the room.
Rooms within reach of London St Pancras International
Sort by distance from London St Pancras International and you can see which places are ten minutes on foot and which are not.
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When to book Ottawa to London
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €476.0990 days
- €362.4060 days
- €403.7045 days
- €330.3430 days
- €481.5921 days
- €654.8414 days
- €819.067 days
- €780.793 days
- €1,178.961 days
- Cheapest lead time
- Fares bottom out around 30 days ahead, at €330.34.
- How much it moves
- The gap between the cheapest and most expensive lead time is 257 percent. The most expensive point is €1,178.96, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 30 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €792.34Sun
- €555.29Mon
- €583.65Tue
- €529.99Wed
- €766.49Thu
- €681.79Fri
- €654.84Sat
Where you leave from and where you arrive
The stations, airports and ports each mode on this corridor actually uses.
Ottawa
Air
- YOW
London
Air
- LGW
- STN
- LHR
- LTN
- LCY
- SEN
What the journey actually looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- Direct or connecting
- 20% of the services we sell on this corridor run through without a change. The remaining 80% involve one connection.
- How far it really runs
- The route covers 5,523 km against 5,362 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at St. John's, Halifax, Montréal, Boston. The gap between arriving and leaving is 61 minutes, of which about 5 is walking.
- If the connection is missed
- The tightest connection we sell here has a 16 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
- First and last departure
- The first service of the day leaves Ottawa at 06:43 and the last at 07:30, across 4 departures. The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Ottawa to London
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from Ottawa to London take?
The Flight from Ottawa to London takes 11h 17m door to door, of which 8h 7m is spent moving. The route runs 5,523 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from Ottawa to London cost?
The Flight from Ottawa to London starts at €583.65 for one passenger, checked on September 12, 2026. A typical fare is €523.47. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from Ottawa to London?
1 operators run the Flight from Ottawa to London: Air Canada. Between them they file around 4 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from Ottawa to London use?
The Flight from Ottawa to London leaves from Ottawa YOW and arrives at London LHR. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from Ottawa to London?
Fares for the Flight from Ottawa to London bottom out around 30 days ahead, at €330.34. The gap between the cheapest and most expensive lead time across the window is 257 percent, measured on September 12, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Ottawa to London produce?
The Flight from Ottawa to London produces about 817.4 kg of CO2 per passenger over 5523 km, which works out at roughly 148 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Where these numbers come from
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Schedules, seat counts and fares are generated by our own model until the supplier contracts are signed. Places, coordinates, operators, which operator serves which pair, and every distance are real. We would rather say that on every page than let a modeled number pass for a filed one.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Ottawa to London on September 12, 2026: 5523 km of route against 5362 km in a straight line, 4 services a day, 1 operators, a cheapest fare of €583.65, and 11h 17m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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The fare from LGW into London is the one price on this trip we cannot show you, because it is not ours.
A car waiting when you land in London
A price agreed before you fly, a driver at arrivals, and a car big enough for the bags.
Book a ride from LGW with Welcome PickupsOr check Daytrip
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