Cheap flights London — Ontario from $440

Q: How long is the flight from London to Ontario?

Approximate flight time — 10h 46m.

Q: How much do flights from London to Ontario cost?

The minimum price over 3 months — from $440 on 13.12.2026.

Q: Which airlines fly from London to Ontario?

This route is served by 3 airlines: Ryanair, Alaska Airlines, Norse Atlantic UK.

Q: From which airports does London operate flights?

From London: LGW (London Gatwick Airport), LHR (London Heathrow Airport), STN (Stansted Airport).

Q: To which airports in Ontario do flights arrive?

To Ontario: ONT (Ontario International Airport).

Q: Which day of the week is cheapest?

The cheapest day of the week — Sunday.

Q: When is the best time to buy tickets London — Ontario?

Optimal — 1–3 months before departure. Check the calendar above — it shows the best dates.

How many travellers?

Adults

12+ years

Children

2–11 years

Infants

under 2

Choose your departure date

Cheapest: $440 on 13.12.2026

Prices shown are from searches by other travellers over the last 24 hours. Missing a date? Click any day — we'll find tickets anyway.

November 2026

December 2026

January 2027

Prices found for 3 of 90 days. Prices update as more travellers search. Click any date to search live.

Depart

—

Return

—

Cheapest flights found

13 Dec 2026, Sun

Ryanair FR 9044

11:20

STN Stansted Airport

05:42

ONT Ontario International Airport

18h 22m 3 stops

View this ticket

15 Jan 2027, Fri

Alaska Airlines AS 101

17:45

LHR London Heathrow Airport

06:24

ONT Ontario International Airport

12h 39m 1 stop

View this ticket

25 Nov 2026, Wed

Norse Atlantic UK Z0 783

12:50

LGW London Gatwick Airport

04:58

ONT Ontario International Airport

16h 8m 2 stops

View this ticket

Route characteristics

Distance

8 725 km

Flight time

10h 46m

Time difference

-8h

Minimum price

from $440 (13.12.2026)

Average price

$506

Maximum price

$577

Cheapest day

Sunday

Departure airports (3)

LGW London Gatwick Airport LHR London Heathrow Airport STN Stansted Airport

Arrival airports (1)

ONT Ontario International Airport

Airlines (3)

FR Ryanair AS Alaska Airlines Z0 Norse Atlantic UK

Agencies (3)

Kiwi.com City.Travel Gotogate

Prices by day of week

Price trend by month

Airlines — cheapest prices 3

Ryanair

Low-cost 1 flights · 1 days

$440

Alaska Airlines

1 flights · 1 days

$501

Norse Atlantic UK

Low-cost 1 flights · 1 days

$577

Where to buy tickets 3

Kiwi.com

1 tickets · 1 days

from $440

City.Travel

1 tickets · 1 days

from $501

Gotogate

1 tickets · 1 days

from $577

Airports

From — London (3)

LGW London Gatwick Airport
LHR London Heathrow Airport
STN Stansted Airport

To — Ontario (1)

ONT Ontario International Airport

Other destinations from London

Frequently asked questions about the route London — Ontario

How long is the flight from London to Ontario?

Approximate flight time — 10h 46m. This is an average for a direct flight. With connections, the time may be longer.

What is the distance from London to Ontario?

The straight-line distance — 8 725 km.

How much do flights from London to Ontario cost?

The minimum price over 3 months — from $440 on 13.12.2026.

What is the average ticket price?

The average price — $506. Range: $440 — $577.

What is the time difference between London and Ontario?

The difference — -8h.

From which airports does London operate flights?

From London: LGW (London Gatwick Airport), LHR (London Heathrow Airport), STN (Stansted Airport).

To which airports in Ontario do flights arrive?

To Ontario: ONT (Ontario International Airport).

Which airlines fly this route?

This route is served by 3 airlines: Ryanair, Alaska Airlines, Norse Atlantic UK.

Which day of the week is cheapest?

The cheapest day of the week — Sunday.

When is the best time to buy tickets?

Optimal — 1–3 months before departure. Check the calendar above — it shows the best dates.

How do I book flights?

Click "View this ticket" on any flight card — you'll be redirected to the booking page with this specific ticket pre-selected.

About the route London — Ontario

Flights London — Ontario is a popular route. The straight-line distance is 8 725 km. Flight time 10h 46m. Time difference -8h.

From London (LON) flights depart from 3 airports: LGW, LHR, STN. To Ontario (ONT) — 1 arrival airport: ONT.

3 airlines operate on this route: Ryanair, Alaska Airlines, Norse Atlantic UK.

The minimum price for the next 3 months — from $440 (13.12.2026). The cheapest dates are highlighted in the calendar above.

The average ticket price — $506, ranging from $440 to $577. Book 1–3 months in advance to get the best deals.

Cheapest day to fly — Sunday.

Other destinations in United States from London

Cheap flights London — Ontario

From — London (3)

To — Ontario (1)

Flights

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