Looking for the price of a flight from London Heathrow to Sarnia?

There’s no fixed price — fares between London and Sarnia can vary a lot by day or time.

Select your dates to check current offers.

It’s often useful to check whether nearby airports offer better fares. Flying during less crowded periods also increases your chances of finding good deals.

Which airports are most convenient between London and Sarnia?

Whether it’s cost or connection time, the right airport combination can make a difference.

• Airports in London: There are 6 airports in London - City Airport, Gatwick, Heathrow, Luton, Southend, Stansted.
• Airports in Sarnia: Sarnia is the only functioning airport for now.

In some cases, flying into a secondary airport can also reduce transfer costs. Connections from multiple airports give you more flight options and airlines.

Refine your flight search from London Heathrow to Sarnia

With Jetcost, it’s easy to narrow down results to find flights that match your schedule and preferences. You can filter by airline, price, trip type, and more — including offers from the best airlines and travel agencies.

Other popular destinations

Also looking at Canada? These cities are trending: Calgary, Montreal, Quebec, Toronto, Vancouver.

Online agencies can show different offers for the same flight — it’s worth comparing. Filters let you narrow things down further, like selecting a specific time slot to find flights that suit you best.