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$64+ Cheap flights from Idaho to San Diego (SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SAN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Idaho to San Diego

Keep the following information in mind while searching for Idaho to San Diego flight deals. Data was last updated September 17, 2025.

Round-trip from

$147
(Southwest)

One-way from

$64
(Cheapflightsfares)

Popular in

November

Cheapest in

August

Average price

$253

Good round-trip deal

$167 or less

Good one-way deal

$123 or less
From Idaho to San Diego
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One-way flight from Idaho to San Diego
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Highest demand for flights based on searches. 10% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Idaho to San Diego.
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Price to beat on a one-way flight from Idaho to San Diego.
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Find flight deals from Idaho to San Diego

Cheapest flights from Idaho to San Diego
Explore the most affordable flight options available from Idaho to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/143:15 pmBOI - SAN
Nonstop2h 15mSouthwest
Wed 10/229:35 amSAN - BOI
1 stop5h 15mSouthwest
Deal found 9/15$147
This Hawaiian Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/284:24 pmGEG - SAN
1 stop4h 50mHawaiian Airlines
Sat 11/18:59 pmSAN - GEG
Nonstop2h 57mHawaiian Airlines
Deal found 9/17$147
This Jettzy deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:01 amBOI - SAN
Nonstop2h 24mAlaska Airlines
Thu 11/68:29 pmSAN - BOI
Nonstop2h 20mAlaska Airlines
Deal found 9/15$148
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2112:50 pmGEG - SAN
1 stop4h 10mSouthwest
Sat 10/254:35 pmSAN - GEG
1 stop4h 45mSouthwest
Deal found 9/16$152
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/167:13 amBOI - SAN
Nonstop2h 32mHawaiian Airlines
Mon 10/207:50 pmSAN - BOI
Nonstop2h 32mHawaiian Airlines
Deal found 9/17$154
This Hawaiian Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:13 amBOI - SAN
Nonstop2h 32mHawaiian Airlines
Sat 10/187:50 pmSAN - BOI
Nonstop2h 32mHawaiian Airlines
Deal found 9/15$157
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:00 amGEG - SAN
Nonstop2h 55mAlaska Airlines
Tue 10/288:59 pmSAN - GEG
Nonstop2h 57mAlaska Airlines
Deal found 9/15$157
This Trip.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/14:06 pmBOI - SAN
1 stop5h 38mMultiple Airlines
Sat 11/88:29 pmSAN - BOI
Nonstop2h 20mMultiple Airlines
Deal found 9/15$158
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:45 pmBOI - SAN
Nonstop2h 29mHawaiian Airlines
Sat 11/88:29 pmSAN - BOI
Nonstop2h 20mHawaiian Airlines
Deal found 9/15$166
This Hawaiian Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/207:10 pmBOI - SAN
Nonstop2h 39mHawaiian Airlines
Thu 10/303:43 pmSAN - BOI
1 stop5h 37mHawaiian Airlines
Deal found 9/15$167
This Hawaiian Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/227:00 amGEG - SAN
Nonstop2h 55mHawaiian Airlines
Mon 11/38:03 amSAN - GEG
1 stop5h 18mHawaiian Airlines
Deal found 9/15$167
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/233:37 pmGEG - SAN
1 stop6h 54mDelta
Tue 10/286:20 amSAN - GEG
1 stop7h 38mDelta
Deal found 9/16$168

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Idaho to San Diego that are best for you.

Fly from

Idaho

Fly to

San Diego

Route

Depart

Return

Price

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Wed 11/19

7:00 am-9:58 am

Nonstop2h 58m

San Diego

Wed 12/3

8:58 pm-11:59 pm

Nonstop3h 01m

$147

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 10/28

7:00 am-9:58 am

Nonstop2h 58m

San Diego

Tue 11/4

5:25 pm-10:59 pm

1 stop5h 34m

$147

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 10/7

4:17 pm-8:49 pm

1 stop4h 32m

San Diego

Tue 10/14

7:50 pm-10:41 pm

Nonstop2h 51m

$147

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 10/28

4:24 pm-9:14 pm

1 stop4h 50m

San Diego

Sat 11/1

8:59 pm-11:56 pm

Nonstop2h 57m

$147

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Wed 10/29

7:00 am-9:58 am

Nonstop2h 58m

San Diego

Wed 11/5

6:38 pm-12:22 am

1 stop5h 44m

$147

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 10/28

12:50 pm-5:00 pm

1 stop4h 10m

San Diego

Tue 11/4

2:15 pm-8:35 pm

1 stop6h 20m

$152

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 10/21

12:50 pm-5:00 pm

1 stop4h 10m

San Diego

Sat 10/25

4:35 pm-9:20 pm

1 stop4h 45m

$152

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 10/15

4:46 pm-10:31 pm

1 stop6h 45m

San Diego

Sat 10/18

6:15 am-1:20 pm

1 stop6h 05m

$157

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Tue 3/3

7:00 am-8:14 am

Nonstop2h 14m

San Diego

Wed 3/4

5:00 pm-8:10 pm

Nonstop2h 10m

$157

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Tue 3/3

6:00 pm-10:47 pm

1 stop5h 47m

San Diego

Wed 3/4

11:05 am-6:25 pm

1 stop6h 20m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 60 results
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Best time to book a flight from Idaho to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Idaho with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to San Diego

What is the cheapest month to book a flight from Idaho to San Diego?

Currently, August is the cheapest month in which you can book a flight from Idaho to San Diego (average of $286). Flying from Idaho to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ID to SAN?

Find hourly flight availability from Idaho to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to San Diego as you normally would.

Weekly flight availability from Idaho to San Diego

Explore weekly flight availability from Idaho to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 17, 2025.

The most flights from USID to SAN are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Related info for your journey

Find useful and relevant information for your journey from Idaho to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Diego from Idaho?

    Most people fly into San Diego (SAN) if they book a flight to San Diego from Idaho. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

  • How popular is this Idaho to San Diego flight route?

    This flight path from Idaho to San Diego was viewed by 12 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Idaho to San Diego?

    Airlines like Hawaiian Airlines, Delta, and United Airlines fly from Idaho to San Diego in about 2h 58m. The time it takes to get you to your destination can typically vary by up to 3h 47m. There are 1028 mi between Idaho and San Diego. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Idaho to San Diego one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $69. However, be on the lookout for offers from Southwest and American Airlines, as they are both options that can get you from Idaho to San Diego for a low price.

  • What are the most popular routes from Idaho to San Diego?

    While some choose either Spokane - San Diego or Jackson Hole - San Diego, Boise Air Term. Gowen Fld - San Diego is the most popular route from Idaho to San Diego.

  • What are the most reliable airlines from Idaho to San Diego?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Idaho to San Diego on time: Japan Airlines (92%), SkyWest Airlines (87%), Alaska Airlines (86%).

  • What are the cheapest flights from Idaho to San Diego?

    The cheapest flight price from Idaho to San Diego is $83. On average you can expect to pay $234. The most popular route, (Boise Air Term. Gowen Fld - San Diego), can usually be booked for $151.

  • Can I find deals for flights from Idaho to San Diego that include hotel bookings?

    Yes. In addition to deals on Idaho to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to San Diego.

  • Can I find deals for business class flights from Idaho to San Diego?

    Yes. Cheapflights offers flight deals from Idaho to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Idaho to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Idaho to San Diego (average of $286). Flying from Idaho to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City

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Top 6 airlines flying from Idaho to San Diego

Discover the top 6 airlines that operate flights from Idaho to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$96Average$182FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$137Average$297FlexibilityNo cancel feeOn-time85%
DeltaCheapest$156Average$384FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$158Average$318FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$177Average$305FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$186Average$318FlexibilityNo cancel feeOn-time69%

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