Cheap flights from London, Ontario to San Francisco from C$ 234
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London, Ontario to San Francisco departing on 16/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Early arrival? Instantly customize your resultsTrusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from London, Ontario to San Francisco
Cheap round-trip flights
Cheap one-way flights
WestJet flights from London, Ontario to San Francisco
Our best WestJet deals on London, Ontario to San Francisco flight tickets
Air Canada flights from London, Ontario to San Francisco
Our best Air Canada deals on London, Ontario to San Francisco flight tickets
See travel insights to San Francisco from
How to get the cheapest flight ticket from London, Ontario to San Francisco
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Francisco?
The cheapest month to fly to San Francisco from London, Ontario is in May. Flight prices, which tend to average around C$ 364, are often lower during this time because this is during the off-season. The month of June is another great option to travel to San Francisco, with average flight prices from London, Ontario averaging around C$ 405.
What is the cheapest day to depart on your flight to San Francisco?
The cheapest day to depart from London, Ontario to San Francisco is on a Saturday. Travellers who choose to depart for San Francisco on a Saturday will often find tickets for as low as C$ 494. On the other hand, Tuesday is the most expensive day to depart from London, Ontario because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 656.
What is the cheapest time of day to depart on your flight to San Francisco?
Flying to San Francisco from London, Ontario at noon is the least expensive time of day to depart. momondo users have found prices as low as C$ 501 when looking at flights departing at noon. In contrast, the most expensive time of day to depart to San Francisco is in the afternoon when prices are around C$ 620.
Can stopping save me money on London, Ontario to San Francisco flights?
You could potentially save up to 70% on your flight if you consider stops on a London, Ontario to San Francisco flight.
What is the cheapest airline that flies from London to San Francisco?
WestJet and United Airlines are the most popular carriers operating from London to San Francisco
Which airlines fly to San Francisco?
Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to San Francisco from London, Ontario according to our data. Air Canada is the first choice among our users, with 46% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 8 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.
When to book flights from London, Ontario to San Francisco
Cheap London, Ontario to San Francisco (YXU to SFO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London, Ontario to San Francisco
How far is London to San Francisco by plane?
San Francisco is 3497.0 km away from London. In terms of flight time, this usually takes a little over 8h 13m.
When did momondo last update prices for flights from London Airport to San Francisco Airport?
Prices for flights from London Airport to San Francisco Airport were last updated today.
How many operators does momondo search for flights from London Airport to San Francisco Airport?
The number of operators available for flights from London Airport to San Francisco Airport is 3 as of July 2025.
How old do you have to be to fly from London Airport to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London, Ontario to San Francisco?
momondo data reveals that the most frequently booked airline on the route from London, Ontario to San Francisco is Air Canada, representing 47% of all bookings. The subsequent popular airlines are WestJet at 32% and United Airlines at 20%.
Best airlines flying from London, Ontario to San Francisco
Compare and see reviews for airlines that fly from London, Ontario to San Francisco with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 274 | Free Cancellation | Rating 7.2 2,917 reviews | |||
| PriceFrom C$ 343 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom C$ 361 | Free Cancellation | Rating 7.1 9,678 reviews |
Travelling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to San Francisco?
It is quick and easy to find London to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.
Can I find flights from London to San Francisco with flexible booking policies on momondo?
Yes. All flights to San Francisco from London on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from London to San Francisco?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Francisco from London.
I’m not ready to book a flight from London to San Francisco right now. Can momondo alert me if prices change?
Price alerts on flights to San Francisco from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.