Cheap Flights from San Diego International to Boise

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      Travellers and cabin class, 1 Adult, Economy

      Compare San Diego International to Boise flight deals

      Find the cheapest month or even day of the year to fly to Boise

      Book the best Boise fare with no extra fees

      Flight deals from San Diego International to Boise

      Looking for a cheap last-minute deal or the best return flight from San Diego International Airport to Boise Airport? If you want to travel next month, return fares start from R 2,558. Find the lowest prices on one-way and return tickets right here.

      Find the cheapest month to fly from San Diego International to Boise

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Diego International to Boise flights are currently cheapest in August.

      Direct flights from San Diego International to Boise

      San Diego International to Boise: Alternative routes

      Compare routes from San Diego International to Boise below. You may find an airport to fly into that's cheaper, faster, or easier than Boise.

      San Diego to Boise: Flight information

      The things to know before you go.
      Cheapest flight foundR 1,205
      Cheapest month to flyOctober
      Average flight time2 hrs, 16 mins
      Most popular airlineSouthwest Airlines
      Average flights per week46

      Finding cheap flights from San Diego International to Boise: Frequently asked questions

      The best price we found for a return flight from San Diego International to Boise is R 2,558. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      2 hours and 16 minutes is the average flight time from San Diego International to Boise.
      Southwest Airlines, Alaska Airlines and SkyWest Airlines fly direct from San Diego International to Boise.
      As of July 2026, there are 46 flights per week flying from San Diego International to Boise.
      The cheapest month to fly from San Diego International to Boise is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Diego International Airport to Boise Airport on Thursday, 22 October 2026.
      Yes – the average flight time is 2 hours and 16 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Boise but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Boise is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Southwest Airlines offers the cheapest flight tickets to Boise.

      Flying from San Diego International Airport (SAN) to Boise Airport (BOI): what you need to know

      • Book a direct flight from San Diego International Airport to Boise Airport and you'll be in the air for an average of 2 hours 20 minutes.

      • Every week, there are 19 San Diego International Airport to Boise Airport flights. If you prefer to be on board as soon as possible, go for the 07:00 Alaska Airlines flight. If you'd rather make the most of your day before you fly, the latest flight is at 20:20 with Alaska Airlines.

      • Get to the airport on time so you don't miss your SAN to BOI flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.

      • During popular months like August, it's best to get to the airport even earlier. Plan to arrive two hours before a domestic departure and four hours ahead of an international flight whenever you're flying during a peak period in general.

      • Alaska Airlines has direct flights from San Diego International Airport to Boise Airport. Book with this popular carrier, then get ready to tick off the sights in Boise — and maybe even more of the United States if you have time.

      • Alaska Airlines is the airline most travellers choose to fly with on this route.

      • Southwest Airlines is the most punctual carrier that operates SAN to BOI flights, with 79.75% of its services arriving on schedule.

      • We make it easy to book a flight with a stopover. To see your options for tickets from San Diego International Airport to Boise Airport, uncheck 'Direct flights only.' Then, pick a flight with a stop long enough to explore the city of your choice. Popular stopovers between SAN and BOI include:

        • Phoenix Sky Harbour Airport

        • Salt Lake City Airport

        • Oakland Metropolitan Oak Airport

      How to find the cheapest flights from San Diego International Airport (SAN) to Boise Airport (BOI)

      • The cheapest price we've found for a one-way San Diego International Airport to Boise Airport flight is R 1,205. A return fare is currently R 2,558. Depending on the availability and when you book, these fares can change.

      • Get cheap tickets from SAN to BOI by booking one month ahead. According to our research, that's the sweet spot for finding the biggest deals.

      • June is the cheapest month for flights from San Diego International Airport to Boise Airport. If you prefer to fly during a different time of year, the 'Whole month' tool will show you the lowest prices for every month.

      • Save time searching for cheap flights from SAN to BOI by setting up a Price Alert. You'll get an email or notification on the app when a special offer becomes available.

      • Select your preferred arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from San Diego International Airport to Boise Airport.

      Handy information about San Diego International Airport (SAN)

      • You'll find SAN at N Harbour Dr.

      • 74% of flights taking off from San Diego International Airport make it to their destination on time.

      • To reach San Diego International Airport from central San Diego, it'll take around 15 minutes if you're going by car. Of course, this depends on traffic conditions. It's approximately 5 kilometres from the airport to the city centre.

      • The journey when using public transport usually takes 25 minutes.

      • Get your holiday off to a stress-free start by staying near SAN. Whether you're boarding an early flight from San Diego International Airport to Boise Airport or want to avoid feeling rushed, these hotels are the answer:

      Arriving at Boise Airport (BOI)

      Getting from Boise Airport (BOI) to central Boise

      • The address for BOI is 3201 Airport Way.

      • Boise Airport to central Boise has a drive time of about 15 minutes. It's approximately 6 kilometres away.

      • If you're using public transport, expect a journey time of about 30 minutes.

      When to fly to Boise Airport (BOI)

      • It's time to choose your trip dates for your flight from San Diego International Airport to Boise Airport. October is the busiest month to visit Boise. If you'd like a more relaxed vibe, go in March.

      • When booking your flight from San Diego International Airport to Boise Airport, think about the kind of weather you enjoy. July is the warmest month in Boise, with the temperature ranging from 15ºC (59ºF) to 35ºC (95ºF).

      • If you want to travel in cooler conditions, look for a cheap ticket from SAN to BOI in January. Temperatures average between -11ºC (12ºF) and 5ºC (41ºF) then.

      Explore more of the United States

      • Spokane is just one of the many places in the United States waiting to be discovered after you've seen Boise. Around 467 kilometres away to the north, well-known attractions include Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.

      • Around 483 kilometres south-east of Boise, Salt Lake City is another essential stop in the United States. Experience major highlights starting with Salt Lake Utah Temple, Temple Square and Salt Lake City Tabernacle.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.