Cheap Flights from San Diego to Idaho from $278 Return

Flight deals from San Diego to Idaho

Looking for cheap tickets from San Diego to Idaho, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Boise.$278 per passenger.Departing Thu, 5 Feb, returning Mon, 9 Feb.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Thu, 5 Feb, arriving in Boise.Inbound indirect flight with Frontier Airlines, departs from Boise on Mon, 9 Feb, arriving in San Diego International.Price includes taxes and charges.From $278, select.

Hailey.$418 per passenger.Departing Sun, 8 Feb, returning Wed, 11 Feb.Return flight with United.Outbound indirect flight with United, departs from San Diego International on Sun, 8 Feb, arriving in Hailey.Inbound indirect flight with United, departs from Hailey on Wed, 11 Feb, arriving in San Diego International.Price includes taxes and charges.From $418, select.

Idaho Falls.$452 per passenger.Departing Thu, 28 May, returning Mon, 1 Jun.Return flight with United.Outbound indirect flight with United, departs from San Diego International on Thu, 28 May, arriving in Idaho Falls.Inbound indirect flight with United, departs from Idaho Falls on Mon, 1 Jun, arriving in San Diego International.Price includes taxes and charges.From $452, select.

Twin Falls.$687 per passenger.Departing Fri, 6 Feb, returning Mon, 9 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Fri, 6 Feb, arriving in Twin Falls.Inbound indirect flight with Delta, departs from Twin Falls on Mon, 9 Feb, arriving in San Diego International.Price includes taxes and charges.From $687, select.

Pocatello.$706 per passenger.Departing Thu, 28 May, returning Mon, 1 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Thu, 28 May, arriving in Pocatello.Inbound indirect flight with Delta, departs from Pocatello on Mon, 1 Jun, arriving in San Diego International.Price includes taxes and charges.From $706, select.

Lewiston.$1,366 per passenger.Departing Mon, 26 Jan, returning Fri, 30 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Mon, 26 Jan, arriving in Lewiston-Nez Perce County.Inbound indirect flight with Delta, departs from Lewiston-Nez Perce County on Fri, 30 Jan, arriving in San Diego International.Price includes taxes and charges.From $1,366, select.

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Flying from San Diego to Idaho

Arm yourself with these facts on the fly.

Cheapest flight found	$278
Cheapest month to fly	February
Average flight time	2 hrs, 23 mins
Cheapest airport to fly from	San Diego International
Most popular airline	Alaska Airlines

How to find cheap flights from San Diego to Idaho

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from San Diego to Idaho. Other savvy travellers recently found return flights from $278 and one-way tickets from $136 one-way. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from San Diego International into Boise

At the moment, the lowest priced flight tickets to Idaho are from San Diego International Airport to Boise Airport.

Fly in February

We crunched the flight calendar and found the cheapest time to fly from San Diego to Idaho is currently February.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from San Diego to anywhere you choose in Idaho.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from San Diego to Idaho go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the Idaho to Idaho flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What's the average San Diego to Idaho flight price?

We looked at all of the upcoming return flights from San Diego to Idaho we could find over the next 12 months. It looks like $278 is the best price. This is good, compared to the average Idaho ticket price of $651.

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

The cheapest month to fly from San Diego to Pocatello Airport is usually May. The cheapest month to fly from San Diego to Lewiston-Nez Perce County Airport is usually January. The cheapest month to fly from San Diego to Twin Falls Airport is usually February. And the cheapest month to fly from San Diego to Idaho Falls Airport is usually May.

Which upcoming date is cheapest to fly from San Diego to Idaho on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Diego to Idaho on Thursday, 5 February 2026.