The cheapest times to fly from LSI to SFO are

  • January 8th to March 18th
  • April 16th to May 13th
  • October 22nd to December 9th

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 LSI to SFO is late February and early March. Prices can be as high as $4258 for Saturday flights during mid March, or as low as $577 for Tuesday flights around late February and early March.


When to Fly to San Francisco

Flying from Lerwick (LSI) to San Francisco, CA (SFO) will usually cost between $589 to $1546 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late February and early March with an average ticket price of $594. Due to high demand the most expensive time to fly is mid March, with an average price of $1809. Planning your trip to low-cost times can easily save you $1215 on economy flights and even more on first-class flights. Generally, any price below $853 can be considered a good price for a round-trip LSI to SFO flight.

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

LSI to SFO Flight Prices

Compared to other flights, the LSI to SFO flight is cheaper than the average and costs slightly more than the average flight leaving from Shetland Islands. 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 Sunday the cheapest day to fly back into LSI. Saturdays are the most expensive days to fly to San Francisco, and Fridays are the most expensive days to return to Shetland Islands. Selecting flights on the least expensive days could save you up to $295 (24%) 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 $816. Return trip prices are from the SFO to LSI 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 LSI 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 50 minutes may not be realistic.


Flight Hacking LSI 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 LSI to SFO — but Champion Traveler does!

Hack #1: Aberdeen (LSI > ABZ > SFO)

  • Price for both tickets: $803
  • Average savings: $50 (5.86%)

See LSI to flights


Flight Questions Answered

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

Which airlines fly this route?

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

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

The distance between the two airports is roughly 4916 miles or 7912 kilometers.

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

The real-world flight time for a nonstop LSI to SFO flight is about 9 hour 50 minutes.

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

It depends on the day of the week and the date, but a typical day might have around 8 available flights from LSI to SFO.


Airport Location Info


Departing Airport

Origination code LSI
Origination airport name Sumburgh Airport
City Lerwick
Country the United Kingdom
Latitude 59.9
Longitude -1.3

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.