$85 Find Cheap Flights from San Francisco to Idaho - Compare and Save

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Cheap Flights from San Francisco to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Boise
Boise1 stop$128
Idaho Falls
Idaho Falls1 stop$211
Hailey
Hailey1 stop$323
Lewiston
Lewiston1 stop$674
Twin Falls
Twin Falls1 stop$474
Pocatello
Pocatello1 stop$377
Spokane
Spokane1 stop$203
Boise
Boise1 stop$128
Idaho Falls
Idaho Falls1 stop$211
Hailey
Hailey1 stop$323
Lewiston
Lewiston1 stop$674
Twin Falls
Twin Falls1 stop$474
Pocatello
Pocatello1 stop$377
Spokane
Spokane1 stop$203
Booking Insights

KAYAK's insights & trends for San Francisco to Idaho flights

Get data-powered insights and trends into flights from San Francisco to Idaho to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Francisco to Idaho?

Flight prices are below average for this route right now.

Flights to Idaho from San Francisco usually cost between $247 and $461 in October.
The lowest price found in the past 5 days was $128 on Frontier (Oct 1-Oct 5).

What is the cheapest San Francisco to Idaho flight route?

The cheapest ticket to Idaho from San Francisco found in the last 5 days was to Boise, at $227 round-trip. The most popular route is from San Francisco (SFO) to Boise (BOI), and the cheapest round-trip airline ticket found on this route in the last 5 days was $227.

What is the cheapest time of day to fly to Idaho?

The cheapest time of day to fly to Idaho is generally at night, when round-trip flights cost $304 on average. Morning departures are around 3% more expensive than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the morning, which is peak travel time and where the average cost of a ticket is $360.

Can I save money by flying with a layover from San Francisco to Idaho?

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $376 on average.

What is the cheapest month to fly from San Francisco to Idaho?

The cheapest month for flights from San Francisco to Idaho is April, when tickets cost $251 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is $475 and $474 respectively.

What’s the cheapest day of the week to fly from San Francisco to Idaho?

If you are looking for a flight deal from San Francisco to Idaho, look for departures on Saturdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Idaho, Thursday is the cheapest day to fly and Monday is the most expensive.

How far in advance should I book a flight from San Francisco to Idaho?

To get a below average price on the flight from San Francisco to Idaho, you should book around 4 weeks before departure, which saves you about 55% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low season

January

Cheapest flight

$85
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from San Francisco to Boise

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from San Francisco to Idaho?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Idaho.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Idaho?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Francisco to Idaho is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Idaho?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from San Francisco to Idaho with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Idaho?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from San Francisco to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from San Francisco to Idaho

 
Need help choosing which airline to fly with from San Francisco to Idaho? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12930 reviews
7.8Comfort
8.5Crew
7.0Entertainment
7.0Food
8.1Boarding
Airline reviews

Low cost, but I think I really wanted an aisle seat, and I could not easily get one. The return leg might be easier.

8.0 ExcellentAnonymous, Sep 2026
Read more Alaska Airlines reviews

Low cost, but I think I really wanted an aisle seat, and I could not easily get one. The return leg might be easier.

Trip from SNA to SFO and back was riddled with DELAYS.

Flight there was massively delayed but never updated on the app. Flight home was massively delayed but also never reported until after we arrived at the airport.

Gate agent and flight crew were amazing! Only issue was landing and waiting on the run way for 30 mins to deplane.

It was all a wonderful experience. I hate to fly and I hate to travel yet. This was a very pleasurable event. Thank you.

Flight cancelled originally with no email informing me of the change. Rebooked for the next day and that flight was delayed with no update on the app.

Sat next to toilet after booking with kayak. Last seat last row

Poor transfer conditions at LAX almost missed flight. Long walk and delayed shuttle ..avoid at all costs

The plane was freezing. A few other customers mentioned how they can’t get their temperature right on their flights lately.

Flight crew and flight were good. But it departed two hours late.

Carmen was an absolute delight on the flight staff! Everyone was lovely and made it a very pleasant flight.

Internet connectivity still seems to be touchy on these flights, making it difficult to rely on it for getting work done.

Crew was absolutely fantastic and we’re so welcoming and friendly ❤️

Flight delayed four separate times. I’m now one hour hours late to landing.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

This was an auto-rebook due to being delayed from an earlier UA connecting flight. The boarding was fine, but they sat me in a middle seat when my original booking was a window seat. Overall, the flight was fine as it still got me to my final destination.

Sitting in coach even in the larger leg space is extremely uncomfortable and the staff pay no attention.

It was a short, comfortable flight. It did leave an hour late due to the pilot having to be replaced (family emergency) but that didn’t inconvenience myself & my friend. The situation was explained, eventually.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

No screens or meal options. Freezing cold. Dirty seats. Left late.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

More options for your flight from San Francisco to Idaho

Complete your trip to Idaho with a hotel stay or car rental