The cheapest times to fly from ILY to SFO are

  • October 8th to December 9th
  • December 24th to March 18th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ILY to SFO is mid February. Prices can be as high as $4906 for Saturday flights during mid March, or as low as $577 for Tuesday flights around mid February.


When to Fly to San Francisco

Flying from Islay (ILY) to San Francisco, CA (SFO) will usually cost between $582 to $4216 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid February with an average ticket price of $591. Due to high demand the most expensive time to fly is mid March, with an average price of $3754. Planning your trip to low-cost times can easily save you $3162 on economy flights and even more on first-class flights. Generally, any price below $878 can be considered a good price for a round-trip ILY to SFO flight.

See below for a graph of average weekly prices for the ILY to SFO route. All prices are for round-trip tickets in USD.

ILY to SFO Flight Prices

Compared to other flights, the ILY to SFO flight is cheaper than the average and costs slightly more than the average flight leaving from Islay. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to SFO, and Wednesday the cheapest day to fly back into ILY. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $986 (48%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $853. Return trip prices are from the SFO to ILY flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ILY to SFO can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 57 minutes may not be realistic.


Flight Hacking ILY to SFO

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from ILY to SFO — but Champion Traveler does!

Hack #1: Glasgow (ILY > GLA > SFO)

  • Price for both tickets: $758
  • Average savings: $120 (13.67%)

See ILY to flights


Flight Questions Answered

Still have questions about flying from ILY to SFO? We’ve got answers.

Which airlines fly this route?

You can find 7 major airlines flying this route most often: Alaska, American, British Airways, Loganair, Lufthansa, Singapore Airlines, United, and potentially more during busy seasons.

How far away is it from San Francisco International Airport to Islay Airport?

The distance between the two airports is roughly 4980 miles or 8015 kilometers.

How long does it take to fly from ILY to SFO?

The real-world flight time for a nonstop ILY to SFO flight is about 9 hour 57 minutes.

How many flights go between Islay and San Francisco, CA?

It depends on the day of the week and the date, but a typical day might have around 17 available flights from ILY to SFO.


Airport Location Info


Departing Airport

Origination code ILY
Origination airport name Islay Airport
City Islay
Country the United Kingdom
Latitude 55.7
Longitude -6.3

Return Airport

Destination code SFO
Destination airport name San Francisco International Airport
City San Francisco, CA
Country the United States
Latitude 37.6
Longitude -122.4


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.