£210 Cheap Flights from San Francisco (SFO) to Sun Valley (SUN)

View £210 flight on Tue, 19 May 2026Opens in a new window

Flight 1

Popular airlines from San Francisco International Airport (SFO) to Sun Valley, ID (SUN-Friedman Memorial)

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Cheap Flights from San Francisco (SFO) to Sun Valley (SUN)

Prices were available within the past 7 days and start at £210 for one-way flights and £439 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 16 May - Sat, 23 May
SFO
San Francisco
SUN
Sun Valley
£439 Return, found 5 days ago
£439
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 16 May from San Francisco to Sun Valley, returning Sat, 23 May, priced at £439 found 5 days ago
Alaska Airlines
Sat, 16 May - Sat, 23 May
SFO
San Francisco
SUN
Sun Valley
£459 Return, found 5 days ago
£459
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 16 May from San Francisco to Sun Valley, returning Sat, 23 May, priced at £459 found 5 days ago
Alaska Airlines
Sat, 16 May - Sat, 23 May
SFO
San Francisco
SUN
Sun Valley
£470 Return, found 5 days ago
£470
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 16 May from San Francisco to Sun Valley, returning Sat, 23 May, priced at £470 found 5 days ago
Alaska Airlines
Sun, 17 May - Sun, 24 May
SFO
San Francisco
SUN
Sun Valley
£491 Return, found 5 days ago
£491
Return
found 5 days ago
Select Alaska Airlines flight, departing Sun, 17 May from San Francisco to Sun Valley, returning Sun, 24 May, priced at £491 found 5 days ago
Alaska Airlines
Sat, 16 May - Sat, 23 May
SFO
San Francisco
SUN
Sun Valley
£497 Return, found 5 days ago
£497
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 16 May from San Francisco to Sun Valley, returning Sat, 23 May, priced at £497 found 5 days ago
Alaska Airlines
Sat, 16 May - Sat, 23 May
SFO
San Francisco
SUN
Sun Valley
£498 Return, found 5 days ago
£498
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 16 May from San Francisco to Sun Valley, returning Sat, 23 May, priced at £498 found 5 days ago
Alaska Airlines
Sat, 16 May - Sat, 23 May
SFO
San Francisco
SUN
Sun Valley
£504 Return, found 5 days ago
£504
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 16 May from San Francisco to Sun Valley, returning Sat, 23 May, priced at £504 found 5 days ago
Alaska Airlines
Sun, 17 May - Sun, 24 May
SFO
San Francisco
SUN
Sun Valley
£518 Return, found 5 days ago
£518
Return
found 5 days ago
Select Alaska Airlines flight, departing Sun, 17 May from San Francisco to Sun Valley, returning Sun, 24 May, priced at £518 found 5 days ago
Alaska Airlines
Sun, 17 May - Sun, 24 May
SFO
San Francisco
SUN
Sun Valley
£520 Return, found 5 days ago
£520
Return
found 5 days ago
Select Alaska Airlines flight, departing Sun, 17 May from San Francisco to Sun Valley, returning Sun, 24 May, priced at £520 found 5 days ago
Alaska Airlines
Sat, 16 May - Sat, 23 May
SFO
San Francisco
SUN
Sun Valley
£528 Return, found 5 days ago
£528
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 16 May from San Francisco to Sun Valley, returning Sat, 23 May, priced at £528 found 5 days ago

Alternative airports near Sun Valley

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Friedman Memorial SUN. Cheapest and Closest option available. Average driving time to city centre is 23 minutes. Flights from £734
SUN
Friedman Memorial
CheapestClosest
Average driving time to city centre23 min
Flights from £734

Frequently asked questions

What is the cheapest month to fly from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
September is typically the cheapest month to fly from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial), with average return fares of approximately £230. This is about 32% lower than the average price throughout the year. September often sees lower prices as it's outside the peak summer travel season and before the winter holiday rush, leading to reduced demand. Other cheap months to fly from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial) include January and April.
Which airlines fly direct from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
Enter SFO to SUN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
To find a cheap flight from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The best airline to fly with from San Francisco, CA (SFO-San Francisco Intl.) (SFO) to Sun Valley, ID (SUN-Friedman Memorial) (SUN) will differ from traveller to traveller. If you like to fly early, UA offers early morning flights. If price is the most important factor, UA typically offers the lowest fares. AS offers the most daily flights from San Francisco, CA (SFO-San Francisco Intl.) (SFO) to Sun Valley, ID (SUN-Friedman Memorial) (SUN), which is brilliant if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The best time to fly from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial) is typically September or January. These months offer the cheapest average prices for a return flight, around £230. While these might not be the peak travel times, flying during these months can help you save on airfare, allowing you to enjoy your trip to Sun Valley more.
How many flights per day from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
There are approximately 14 connecting flights per day from San Francisco, CA (SFO-San Francisco Intl.) (SFO) to Sun Valley, ID (SUN-Friedman Memorial) (SUN). Some common connection points include Portland Intl. (PDX), Los Angeles Intl. (LAX), and Seattle - Tacoma Intl. (SEA).
What is the earliest flight from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The earliest flight from San Francisco International Airport (SFO) to Friedman Memorial (SUN) typically departs at approximately 12:55 AM local time, operated by United Airlines. This is a seasonal service active in February and March. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
You'll typically find the most flights from San Francisco Intl. (SFO) to Friedman Memorial (SUN) on a Monday, with around 39 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, United Airlines, and Delta Air Lines. Flight schedules are consistent throughout the week, with only a slight variation between days.
What are the most popular departure times for flights from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The most popular departure times for flights from San Francisco International Airport (SFO) to Friedman Memorial (SUN) are in the morning, from 9am to 12pm. About 34% of passengers prefer this time. Many major carriers, including United Airlines, Delta and Alaska Airlines, offer flights during this window. This timing works well because it allows you to start your travel day without an overly early wake-up, and you'll arrive at your destination with plenty of time to settle in.
How long does it take to fly from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
A nonstop flight from SFO to SUN typically takes around 2 hours, covering approximately 588 miles. Connecting flights on this route usually add 5 hours 50 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
Select the "Business class" and "First class" filters when looking for SFO to SUN flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial) flight with Expedia?
It's easy to earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Sun Valley from San Francisco Intl. (SFO)?
If you're planning to travel to Sun Valley from San Francisco Intl. (SFO), you can fly directly into Friedman Memorial (SUN) Some flights may connect through major hubs like Portland Intl. (PDX), Los Angeles Intl. (LAX), McCarran Intl. (LAS) before reaching Sun Valley. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial) at the last minute?
Typically, booking a last minute flight from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial) flight and hotel package?
Securing a San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
If you booked your San Francisco, CA (SFO-San Francisco Intl.) to Sun Valley, ID (SUN-Friedman Memorial) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Friedman Memorial
Return price
£439
Distance
940 km

Book with confidence

Compare flights from San Francisco to Sun Valley easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from San Francisco to Sun Valley. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Friedman Memorial in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from San Francisco Intl. to Friedman Memorial.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from San Francisco Intl. (SFO) to Friedman Memorial (SUN)

The easiest way to view the best deals on flights from San Francisco to Sun Valley today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from San Francisco Intl. to Friedman Memorial start at just £439 and range up to £528.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near San Francisco and Sun Valley
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your San Francisco to Sun Valley flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from San Francisco Intl. to Friedman Memorial for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from San Francisco to Sun Valley easily and book with confidence

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*Available to Expedia members.