$67 Find Cheap Flights from San Francisco to Idaho

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Idaho departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Idaho, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Idaho, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Francisco to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boisenonstop$151
Idaho Falls
Idaho Falls1 stop$261
Hailey
Hailey1 stop$177
Lewiston
Lewiston2 stops$488
Pocatello
Pocatello1 stop$483
Spokane
Spokanenonstop$167
Boise
Boisenonstop$151
Idaho Falls
Idaho Falls1 stop$261
Hailey
Hailey1 stop$177
Lewiston
Lewiston2 stops$488
Pocatello
Pocatello1 stop$483
Spokane
Spokanenonstop$167

Book Cheap San Francisco to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Idaho that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Idaho

Thu, Mar 12 - Thu, Mar 19
Hawaiian Airlines Logo
7:31 pm - 10:15 pm
SFO
-
BOI
1h 44mnonstop
Hawaiian Airlines Logo
7:40 am - 8:40 am
BOI
-
SFO
2h 00mnonstop
$151Hawaiian Airlines
Tue, Mar 10 - Tue, Mar 31
United Airlines Logo
4:20 pm - 7:12 pm
SFO
-
BOI
1h 52mnonstop
United Airlines Logo
4:05 pm - 5:10 pm
BOI
-
SFO
2h 05mnonstop
$157United Airlines
Thu, Mar 12 - Thu, Mar 19
Alaska Airlines Logo
7:31 pm - 10:15 pm
SFO
-
BOI
1h 44mnonstop
Alaska Airlines Logo
5:00 am - 10:31 am
BOI
-
SFO
6h 31m
1 stop
$160Alaska Airlines
Fri, Feb 27 - Mon, Mar 2
Alaska Airlines Logo
8:46 pm - 11:38 pm
SFO
-
BOI
1h 52mnonstop
Alaska Airlines Logo
1:25 pm - 2:26 pm
BOI
-
SFO
2h 01mnonstop
$165Alaska Airlines
Tue, Mar 10 - Tue, Mar 31
Alaska Airlines Logo
8:42 am - 3:08 pm
SFO
-
BOI
5h 26m
1 stop
Alaska Airlines Logo
7:40 am - 8:40 am
BOI
-
SFO
2h 00mnonstop
$167Alaska Airlines
Wed, Feb 25 - Wed, Mar 4
United Airlines Logo
9:29 am - 11:45 am
SFO
-
GEG
2h 16mnonstop
United Airlines Logo
7:00 am - 9:28 am
GEG
-
SFO
2h 28mnonstop
$167United Airlines
Tue, Mar 10 - Tue, Mar 31
Delta Logo
5:01 pm - 10:11 pm
SFO
-
BOI
4h 10m
1 stop
Delta Logo
8:00 am - 12:25 pm
BOI
-
SFO
5h 25m
1 stop
$177Delta
Wed, Feb 25 - Sat, Feb 28
Southwest Logo
2:00 pm - 9:45 pm
SFO
-
GEG
7h 45m
1 stop
Southwest Logo
2:45 pm - 10:30 pm
GEG
-
SFO
7h 45m
1 stop
$189Southwest
Sat, Mar 7 - Mon, Mar 9
Southwest Logo
5:00 am - 10:50 am
SFO
-
GEG
5h 50m
1 stop
Southwest Logo
2:55 pm - 11:20 pm
GEG
-
SFO
8h 25m
1 stop
$191Southwest
Mon, Apr 20 - Wed, Apr 29
Delta Logo
5:59 am - 10:45 am
SFO
-
GEG
4h 46m
1 stop
Delta Logo
11:25 am - 3:59 pm
GEG
-
SFO
4h 34m
1 stop
$197Delta
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.

What is the cheapest San Francisco to Idaho flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Idaho from San Francisco found in the last 72 hours was to Boise, at $153 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 72 hours was $153.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $414, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to Idaho is April, when tickets cost $197 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is $308 and $303 respectively.

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

The average price of all round-trip flights from San Francisco to Idaho clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from San Francisco to Idaho, look for departures on Tuesdays 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 calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Idaho, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

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 58% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$67
Best time to beat the crowds but there is an average 39% increase in price.
Most popular time to fly and prices are also 4% lower on average.
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.

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

    The cheapest time of day to fly to Idaho is generally in the morning, when round-trip flights cost $256 on average. Morning departures are around 14% cheaper than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the evening, which is peak travel time and where the average cost of a ticket is $299.

Reviews of the top 4 airlines serving from San Francisco to Idaho

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Idaho. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
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.
8.0
Alaska AirlinesOverall score based on 11801 reviews
7.0Entertainment
8.5Crew
8.1Boarding
7.1Food
7.8Comfort
Airline reviews

The Alaska Airlines app made it very difficult to find my boarding pass. It was very frustrating to use! The flight itself was flawless.

8.0 ExcellentMatt, Jan 2026
SFO - PDX
Read more Alaska Airlines reviews

The Alaska Airlines app made it very difficult to find my boarding pass. It was very frustrating to use! The flight itself was flawless.

The flight was excellent and very friendly and helpful staff. Will travel again and recommend to friends. Thank you

Did not have In flight service on my round trip due to turbulence. I did not partake in In flight entertainment. Flight descending into LAX was very turbulent. It would have been nice if the pilot communicated with us during that rough descent into LAX to ease the minds of some of us more nervous flyers.

They canceled my flight with only a couple hours before checking in at the airport and offered no alternatives to get home.

I had entered my TSA pre number when I bought the ticket but TSA pre was not on my boarding pass. I went to find an agent at check in and there was only one agent one duty for first class and a line of people waiting for check in/baggage with no agent manning that area.

Comfort level was below par. Food selection was non-existent. Paying $35 for 1st bag is never appreciated. I will not fly them again. I am actually trying to change my return flight.

The flight attendants were excellent and I was in the back of the plane. Much much better than recent JetBlue experiences on that route and better than Delta on that route.

I’m not sure there is anything that can be improved, even the cost was fantastic.

Poor. They should have given me a row with more room and instead they put me in a middle seat with two strangers next to me

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

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

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

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

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Having to up charge for a seat assignment is not good. Delta can do better

I received several emails about my 3:10 flight. When I showed up to the airport at 12:30 to check my bags I was told the flight was actually at 1 pm. They grudgingly rebooked me for a flight at 5:22 to Vegas to get a connecting to LAX. I did find the gate for my original 3:10 flight but they were booked. I proceeded to receive status updates and gate change information for the 3:10 flight, even though I was apparently never supposed to be on that flight

The food options were limited and very specific. Some type of entertainment option for a 4.5 hour flight would have been nice.

The Kayak confirmation number did not work for checking in the day before. I checked in at 8.30 using my ticket number. When I arrived at the airport, I was informed that the flight was overbooked, and since I had checked in late, I did not have a seat. The Next flight was not until ten PM. I called my wife, who had been taking care of our kids all weekend, and she was upset, calling me a liar and telling me to stay in SD. It turned my weekend getaway into a nightmare! I blame the Kayak website and will not book flights using your app in the future.

comfortable but the food is horrible. I have flown Hawaiian several times now and no matter what they say the food is its the same squashed bread with melted goop inside. Tastes fake and isnt what they represent, its quite nasty. What happend to real food? And there is NO entertainment!! so not sure why they are asking for a review on that.

Good and friendly staff. Nicely enjoyed the complimentary drink and snack.

I was very, very cold and a stranger loaned me her sweater next to me. I didn’t wanna buy a blanket just for a four hour trip when I did not need the pillow or the earphones. I don’t mind purchasing a blanket, but I only needed that not all of it accessories. Cold air pretty much blew the entire trip. Two people in front of me both bought the blanket packages. Maybe that’s the idea. The crew was exceptionally nice and passed through multiple times.. the restrooms were very clean and usually accessible.

3 hour wait on customer service after flight was cancelled. Was bumped to a flight where I wouldnt have gotten to my destination for another 2 days. Had to fully refund flight and book a new one the following morning. Paid twice the amount for the flight than I had originally booked. Very disappointed I was not offered any sort of discount or points for all of the frustration, in fact the airline profited twice as much off of me by cancelling my flight and and changing my entire trip.

I understand that both Hawaiian and Alaskan are in the process of merging but I could not get real-time flight info or access my boarding pass on either app

Had a hard time checking into my flight on my phone because they gave me the wrong confirmation number. Otherwise everything else went well.

All was good and they were able to seat my travel companion next to me. Thank you.

The flight crew where really good. Better then the crew from BNE to SFO

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

left on time, reasonable boarding process arrived early luggage came out quickly

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

This was an older airplane. The cabin was constantly warm to hot throughout the 10 hour flight and there were no vents to personalize air flow. Also since it was an older plane, the material and comfort of the chairs were very uncomfortable. I left my flight with major soreness on my tailbone.

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Everything you need to know for your flight from San Francisco to Idaho

Information on your arrival and departure airports