$624 Cheap Flights from San Francisco (SFO) to Kirkwall (KOI)

View $624 flight on Tue, Dec 2, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Kirkwall (KOI)

Cheap Flights from San Francisco to Kirkwall (SFO-KOI)

Prices were available within the past 7 days and start at $624 for one-way flights and $1,023 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Wed, Feb 18 - Sat, Feb 28
SFO
San Francisco
KOI
Kirkwall
$1,023 Roundtrip, found 5 days ago
$1,023
Roundtrip
found 5 days ago
Select British Airways flight, departing Wed, Feb 18 from San Francisco to Kirkwall, returning Sat, Feb 28, priced at $1,023 found 5 days ago
British Airways
Wed, Feb 18 - Sat, Feb 28
SFO
San Francisco
KOI
Kirkwall
$1,032 Roundtrip, found 5 days ago
$1,032
Roundtrip
found 5 days ago
Select British Airways flight, departing Wed, Feb 18 from San Francisco to Kirkwall, returning Sat, Feb 28, priced at $1,032 found 5 days ago
British Airways
Wed, Feb 18 - Sat, Feb 28
SFO
San Francisco
KOI
Kirkwall
$1,042 Roundtrip, found 5 days ago
$1,042
Roundtrip
found 5 days ago
Select British Airways flight, departing Wed, Feb 18 from San Francisco to Kirkwall, returning Sat, Feb 28, priced at $1,042 found 5 days ago
Turkish Airlines
Tue, Dec 2 - Tue, Dec 16
SFO
San Francisco
KOI
Kirkwall
$1,070 Roundtrip, found 5 days ago
$1,070
Roundtrip
found 5 days ago
Select Turkish Airlines flight, departing Tue, Dec 2 from San Francisco to Kirkwall, returning Tue, Dec 16, priced at $1,070 found 5 days ago
British Airways
Tue, Dec 2 - Tue, Dec 16
SFO
San Francisco
KOI
Kirkwall
$1,073 Roundtrip, found 5 days ago
$1,073
Roundtrip
found 5 days ago
Select British Airways flight, departing Tue, Dec 2 from San Francisco to Kirkwall, returning Tue, Dec 16, priced at $1,073 found 5 days ago
British Airways
Tue, Dec 2 - Tue, Dec 16
SFO
San Francisco
KOI
Kirkwall
$1,073 Roundtrip, found 5 days ago
$1,073
Roundtrip
found 5 days ago
Select British Airways flight, departing Tue, Dec 2 from San Francisco to Kirkwall, returning Tue, Dec 16, priced at $1,073 found 5 days ago
British Airways
Tue, Dec 2 - Tue, Dec 16
SFO
San Francisco
KOI
Kirkwall
$1,076 Roundtrip, found 5 days ago
$1,076
Roundtrip
found 5 days ago
Select British Airways flight, departing Tue, Dec 2 from San Francisco to Kirkwall, returning Tue, Dec 16, priced at $1,076 found 5 days ago
British Airways
Tue, Dec 2 - Tue, Dec 16
SFO
San Francisco
KOI
Kirkwall
$1,081 Roundtrip, found 5 days ago
$1,081
Roundtrip
found 5 days ago
Select British Airways flight, departing Tue, Dec 2 from San Francisco to Kirkwall, returning Tue, Dec 16, priced at $1,081 found 5 days ago
British Airways
Tue, Dec 2 - Tue, Dec 16
SFO
San Francisco
KOI
Kirkwall
$1,082 Roundtrip, found 5 days ago
$1,082
Roundtrip
found 5 days ago
Select British Airways flight, departing Tue, Dec 2 from San Francisco to Kirkwall, returning Tue, Dec 16, priced at $1,082 found 5 days ago
British Airways
Tue, Dec 2 - Tue, Dec 16
SFO
San Francisco
KOI
Kirkwall
$1,083 Roundtrip, found 5 days ago
$1,083
Roundtrip
found 5 days ago
Select British Airways flight, departing Tue, Dec 2 from San Francisco to Kirkwall, returning Tue, Dec 16, priced at $1,083 found 5 days ago
Flights from San Francisco (SFO) to Kirkwall (KOI)
Origin airport
San Francisco Intl.
Destination airport
Kirkwall
Roundtrip price
$1,022
Distance
4920 mi

San Francisco to Kirkwall Flights

The cheapest times to fly from San Francisco to Kirkwall

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Kirkwall are during the month of February. You can find some of the cheapest flights from San Francisco to Kirkwall with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Kirkwall

Sunday is one of the best days to book for cheap flights from San Francisco to Kirkwall: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Kirkwall

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Kirkwall in 2025. You can also book with separate airlines for your outbound and return journeys, from $624 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Kirkwall flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Kirkwall airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Kirkwall Airport (KOI) cost?
Snag a cheap one-way flight from $624 or cheap return flight from $1,023 from San Francisco Intl. Airport (SFO) to Kirkwall Airport (KOI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Kirkwall Airport (KOI)?
February is the most affordable month to fly from SFO to KOI. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Kirkwall Airport (KOI)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from SFO to KOI. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from San Francisco Intl. Airport (SFO) to Kirkwall Airport (KOI)?
Nonstop flights from San Francisco Intl. Airport (SFO) to Kirkwall Airport (KOI) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SFO to KOI?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Kirkwall Airport (KOI)?
Choose a flight from San Francisco Intl. Airport (SFO) to Kirkwall Airport (KOI) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Kirkwall Airport (KOI) last-minute?
Holding off until right before your break to book a flight from SFO to KOI generally means paying more. Although you may find some last-minute discounts, they aren't always guaranteed. Keep your travel plans flexible to boost your chances of landing a bargain.
Is it cheaper to book a SFO to KOI flight and hotel package?
Opting for a SFO to KOI flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Pick from our wide range of hotels and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Kirkwall Airport (KOI)?
If you reserved your SFO to KOI flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

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*Available to One Key members.