$80 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$178
Idaho Falls
Idaho Falls1 stop$270
Hailey
Hailey1 stop$353
Lewiston
Lewiston1 stop$290
Twin Falls
Twin Falls1 stop$526
Spokane
Spokanenonstop$153
Boise
Boise1 stop$178
Idaho Falls
Idaho Falls1 stop$270
Hailey
Hailey1 stop$353
Lewiston
Lewiston1 stop$290
Twin Falls
Twin Falls1 stop$526
Spokane
Spokanenonstop$153
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 $252 and $448 in January.
The lowest price found in the past 5 days was $178 on Frontier (Jan 14-Jan 18).

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 $265 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 $265.

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 $307 on average. Morning departures are around 14% 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 $391.

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

No, with an average price for the route of $629, prices are generally cheapest when you fly direct.

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 $259 (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 $475 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 Sunday 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 53% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low season

January

Cheapest flight

$80
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 15% 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 13135 reviews
7.8Comfort
7.0Entertainment
7.0Food
8.5Crew
8.1Boarding
Airline reviews

Liked the flight was on time. Seats and leg room need major imptovement

8.0 ExcellentLori, Oct 2026
Read more Alaska Airlines reviews

Liked the flight was on time. Seats and leg room need major imptovement

Alaska prevented me from selecting a seat and was only assigned a seat at the gate. This gave me unnecessary anxiety prior to boarding. Several 15-minute delays (probably weather though no explanation was provided) eventually pushed departure back by one hour.

Gate agent was VERY efficient, even as his 2nd wasn't there. But... Great Landing! (I suspect he's done this before.)

For a 6 hour flight better snacks at least bag of chips should be offered all we got was connamon pretzels going and coming back nothing but maybe bc it’s an overnight.

Our flight was experience was great. The captain announced what to expect on the flight. The weather was stormy in Florida our destination and he explained we would be going thru some turbulence but all would be good. He took time to announce when we flew over notable areas of the country. Flight crew was good. The snacks need to step up. One Biscoff for a five hour flight on a $650.00 ticket is slack.

Sort flight, helpful staff. A special thank you for allowing me to board early, I'm almost ninety and I have problems lifting , was able to get done. Thank You

Boarding was well organized, seats comfortable & it was a very pleasant flight

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

WiFi was a major problem and if it does not work on a 4 hour flight then that lowers the overall experience

The Airline Attendant found us in flight and moved us to seats in the front of economy due to the short time we would have to make our connecting flight. We really appreciated it.

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

New Max 10, first class seats have been shrunk. End of a 20 hour journey, it was United not Lufthansa, just glad to get home

One of my checked luggage was damaged. Cracked on the top by the handle.

I have been flying united for a long time but now I’m done

Delayed - leaving, delayed getting to the gate at destination. What should have been a very easy flight and experience was not.

Better management of the boarding process. Is there any way you could forward all the window seats first? That's the Way Reno Air used to do it, and they had the fastest boarding in the industry!

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

More options for your flight from San Francisco to Idaho

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