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Cheap Flights from Boise (BOI) to San Diego (SANA)

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      Travellers and cabin class, 1 Adult, Economy
      Southwest Airlines
      Alaska Airlines
      Japan Airlines

      Compare Boise to San Diego flight deals

      Find the cheapest month or even day of the year to fly to San Diego

      Book the best San Diego fare with no extra fees

      Flight deals from Boise to San Diego

      Looking for a cheap last-minute deal or the best return flight from Boise Airport to San Diego? If you want to travel next month, return fares start from $163. Find the lowest prices on one-way and return tickets right here.
      San Diego.$163 per passenger.Departing Thu, 12 Nov, returning Thu, 19 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Thu, 12 Nov, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Thu, 19 Nov, arriving in Boise.Price includes taxes and charges.From $163, select.
      San Diego.$163 per passenger.Departing Tue, 15 Sep, returning Sat, 19 Sep.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Tue, 15 Sep, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Sat, 19 Sep, arriving in Boise.Price includes taxes and charges.From $163, select.
      San Diego.$187 per passenger.Departing Fri, 4 Dec, returning Mon, 7 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Fri, 4 Dec, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Mon, 7 Dec, arriving in Boise.Price includes taxes and charges.From $187, select.
      San Diego.$187 per passenger.Departing Fri, 9 Oct, returning Tue, 13 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Fri, 9 Oct, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Tue, 13 Oct, arriving in Boise.Price includes taxes and charges.From $187, select.
      San Diego.$190 per passenger.Departing Tue, 2 Feb, returning Tue, 9 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Boise on Tue, 2 Feb, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Tue, 9 Feb, arriving in Boise.Price includes taxes and charges.From $190, select.
      San Diego.$214 per passenger.Departing Fri, 22 Jan, returning Mon, 25 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Boise on Fri, 22 Jan, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Mon, 25 Jan, arriving in Boise.Price includes taxes and charges.From $214, select.
      San Diego.$221 per passenger.Departing Thu, 29 Oct, returning Mon, 2 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Thu, 29 Oct, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Mon, 2 Nov, arriving in Boise.Price includes taxes and charges.From $221, select.
      San Diego.$221 per passenger.Departing Mon, 23 Nov, returning Tue, 1 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Mon, 23 Nov, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Tue, 1 Dec, arriving in Boise.Price includes taxes and charges.From $221, select.
      San Diego.$221 per passenger.Departing Wed, 30 Sep, returning Wed, 7 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Wed, 30 Sep, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Wed, 7 Oct, arriving in Boise.Price includes taxes and charges.From $221, select.
      San Diego.$248 per passenger.Departing Mon, 21 Dec, returning Tue, 5 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Boise on Mon, 21 Dec, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Tue, 5 Jan, arriving in Boise.Price includes taxes and charges.From $248, select.
      San Diego.$347 per passenger.Departing Tue, 2 Feb, returning Tue, 9 Feb.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Tue, 2 Feb, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Tue, 9 Feb, arriving in Boise.Price includes taxes and charges.From $347, select.
      San Diego.$386 per passenger.Departing Mon, 31 Aug, returning Thu, 3 Sep.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Mon, 31 Aug, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Thu, 3 Sep, arriving in Boise.Price includes taxes and charges.From $386, select.
      San Diego.$395 per passenger.Departing Wed, 30 Dec, returning Mon, 4 Jan.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Wed, 30 Dec, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Mon, 4 Jan, arriving in Boise.Price includes taxes and charges.From $395, select.
      San Diego.$414 per passenger.Departing Fri, 22 Jan, returning Mon, 25 Jan.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Fri, 22 Jan, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Mon, 25 Jan, arriving in Boise.Price includes taxes and charges.From $414, select.
      San Diego.$425 per passenger.Departing Mon, 12 Apr, returning Thu, 15 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Boise on Mon, 12 Apr, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Thu, 15 Apr, arriving in Boise.Price includes taxes and charges.From $425, select.
      San Diego.$470 per passenger.Departing Tue, 25 Aug, returning Tue, 25 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boise on Tue, 25 Aug, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Tue, 25 Aug, arriving in Boise.Price includes taxes and charges.From $470, select.

      Find the cheapest month to fly from Boise to San Diego

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boise to San Diego flights are currently cheapest in September.
      Aug
      from $470
      Sep
      from $163
      Oct
      from $187
      Nov
      from $163
      Dec
      from $187
      Jan
      from $214
      Feb
      from $190
      Mar
      from $581
      Apr
      from $425
      May
      Find prices
      Jun
      Find prices
      Jul
      Find prices

      Direct flights from Boise to San Diego

      Alaska Airlines
      Japan Airlines
      Southwest Airlines

      Alternative Boise to San Diego routes

      Looking for the cheapest, fastest or easiest route from Boise to San Diego? You could fly into the following airports instead.

      San Diego International

      4km from central San Diego
      ClosestCheapest
      from $163
      Search flights

      McClellan-Palomar

      48km from central San Diego
      from $444
      Search flights

      Boise to San Diego: Flight information

      The things to know before you go.
      Cheapest flight found$163
      Cheapest month to flySeptember
      Average flight time2 hrs, 20 mins
      Most popular airlineSouthwest Airlines
      Average flights per week36

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

      There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
      The best price we found for a return flight from Boise to San Diego is $163. 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 20 minutes is the average flight time from Boise to San Diego.
      Southwest Airlines, Alaska Airlines and Japan Airlines fly direct from Boise to San Diego.
      As of August 2026, there are 36 flights per week flying from Boise to San Diego.
      The cheapest month to fly from Boise to San Diego is usually September.
      If you're flying from Boise Airport, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from $163.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boise Airport to San Diego on Tuesday, 15 September 2026.
      Yes – the average flight time is 2 hours and 20 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 San Diego 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 San Diego is around 40 days in advance, so don’t leave your flight to the last minute.

      In August, the average temperature is usually around 23°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
      Currently, Southwest Airlines offers the cheapest flight tickets to San Diego.

      Flying from Boise Air Terminal (BOI) to San Diego: what you need to know

      • Expect to be travelling for 2 hours 20 minutes. That's the average journey time for a direct flight from Boise Air Terminal to San Diego.

      • The timezone in San Diego is UTC-8. The city is one hour behind Boise, where Boise Air Terminal is located.

      • The busiest route is from Boise Air Terminal (BOI) to San Diego International Airport (SAN). There are 19 services every week between these two airports. If you'd like to head off as soon as possible, the earliest flight from BOI to SAN is the 06:45 Southwest Airlines service. If you prefer to travel later, the final departure is at 20:21 with Alaska Airlines.

      • Leave enough time to catch your BOI to San Diego flight. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

      • Travelling during a peak time such as July? School holidays and other popular seasons can mean longer queues at security. Play it safe and get there up to four hours before international flights and two hours before a domestic departure.

      • Direct Boise Air Terminal to San Diego tickets are available for booking. San Diego International Airport (SAN) is where you'll step off the plane.

      • Book your ticket with Alaska Airlines. This well-known airline operates direct flights from Boise Air Terminal to San Diego.

      • The journey from central Boise to BOI takes about 30 minutes on public transport. If you ride-share, drive or take a taxi, you'll cover the 6 kilometres in 15 minutes or so, depending on traffic.

      • Looking for a hotel close to BOI? If you're catching an early flight from Boise Air Terminal to San Diego, these stays put the terminal practically at your doorstep:

      • Boise Air Terminal has an excellent on-time performance, reducing your chances of a delayed flight. Departures from BOI land at their destination as scheduled 84% of the time.

      • The address for BOI is 3201 Airport Way.

      How to find the cheapest flights from Boise Air Terminal (BOI) to San Diego

      • The lowest price we've found for a one-way Boise Air Terminal to San Diego flight is $95. The cheapest price for a return flight is $163. Keep in mind fares may change due to demand at the time of booking.

      • Don't leave things to the last moment. You're more likely to find cheap flights from BOI to San Diego if you book in advance. Airlines often have some great early bird deals.

      • Finding cheap tickets from Boise Air Terminal to San Diego is easier if you're flexible with your travel dates. Use the 'Whole month' tool to access the lowest prices across the month and walk away with a sweet deal.

      • There's no need to check back constantly to see if fares have dropped when you create a Price Alert. We'll notify you as soon as there's an extra saving on cheap flights from BOI to San Diego.

      • Tailor your flights with filters. Pick your departure and arrival times, total journey duration and airlines. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' flights from Boise Air Terminal to San Diego.

      Airports in San Diego

      San Diego International Airport (SAN)

      • The distance from San Diego International Airport (SAN) to central San Diego is roughly 5 kilometres. It'll take you about 15 minutes to reach the centre driving.

      • Getting to the centre on public transport takes around 25 minutes.

      • Look into staying at a hotel close to SAN if you have a late flight from Boise Air Terminal to San Diego. Check in to one of these options and make your first night all about rest:

      • Lock in the best rate by booking your ride from San Diego International Airport about two weeks ahead of your flight from BOI to San Diego.

      • The address for SAN is N Harbour Dr.

      McClellan-Palomar Airport (CLD)

      • Central San Diego is roughly 48 kilometres from McClellan-Palomar Airport (CLD). Step off your flight from Boise Air Terminal to San Diego and then look for any airport signs that'll help you reach the city centre.

      • Hang up the 'Do not disturb' sign and rest at a hotel near CLD. Here are a few options where you can settle in after your BOI to San Diego flight:

      • Avoid filling out forms on the spot and save time at the rental desk by having everything prearranged. Secure your ride from CLD in advance so you can simply grab the keys and be on your way.

      Best time to go to San Diego

      • July is the most popular month for flights from Boise Air Terminal to San Diego. To steer clear of the crowds, visit San Diego in December.

      • The warmest month in San Diego is August, with temperatures ranging between 16ºC (61ºF) and 27ºC (81ºF). Book your Boise Air Terminal to San Diego plane ticket then if that's your idea of comfortable weather.

      • February sees average temperatures of between 8ºC (46ºF) and 22ºC (72ºF). Search for a cheap ticket from BOI to San Diego around that time if you like travelling in cooler conditions.

      More about San Diego

      Explore more of the United States

      • Los Angeles is just one of the many places in the United States waiting to be discovered once you've seen San Diego. Around 177 kilometres away to the northwest, its best attractions include Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.

      • If there's time to check out another great destination in the United States, head for Phoenix, roughly 483 kilometres east of San Diego. Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum are highlights.

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      Plan the rest of your trip from Boise to San Diego

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