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$57+ 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SAN
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$147
(Alaska Airlines)

One-way from

$57
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$287

Good round-trip deal

$227 or less

Good one-way deal

$88 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-San Diego flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-San Diego flights.
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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. 6% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 8, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/7. 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.
Tue 2/36:48 amGEG - SAN
Nonstop2h 59mAlaska Airlines
Tue 2/1011:03 amSAN - GEG
Nonstop3h 03mAlaska Airlines
Deal found 1/7$147
This Alaska Airlines deal was found by Cheapflights users on 1/8. 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.
Wed 2/2512:00 pmGEG - SAN
1 stop6h 30mAlaska Airlines
Wed 2/259:00 pmSAN - GEG
Nonstop2h 59mAlaska Airlines
Deal found 1/8$151
This Orbitz deal was found by Cheapflights users on 1/6. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/73:00 pmGEG - SAN
Nonstop2h 50mAlaska Airlines
Tue 2/1011:03 amSAN - GEG
Nonstop3h 03mAlaska Airlines
Deal found 1/6$152
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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.
Tue 2/36:48 amGEG - SAN
Nonstop2h 59mAlaska Airlines
Fri 2/67:27 pmSAN - GEG
Nonstop2h 59mAlaska Airlines
Deal found 1/6$157
This United Airlines deal was found by Cheapflights users on 1/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/67:07 amBOI - SAN
1 stop4h 15mUnited Airlines
Wed 3/114:00 pmSAN - BOI
1 stop6h 57mUnited Airlines
Deal found 1/8$159
This American Airlines deal was found by Cheapflights users on 1/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/293:02 pmGEG - SAN
1 stop6h 56mAmerican Airlines
Sun 2/16:15 amSAN - GEG
1 stop7h 54mAmerican Airlines
Deal found 1/7$159
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 2/1311:56 amBOI - SAN
1 stop24h 32mMultiple Airlines
Sun 2/221:42 pmSAN - BOI
1 stop26h 09mMultiple Airlines
Deal found 1/7$160
This Kiwi.com deal was found by Cheapflights users on 1/7. 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.
Sat 2/214:28 pmGEG - SAN
1 stop4h 31mAlaska Airlines
Tue 3/39:00 pmSAN - GEG
Nonstop2h 59mAlaska Airlines
Deal found 1/7$160
This Expedia deal was found by Cheapflights users on 1/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2912:03 pmGEG - SAN
1 stop12h 05mMultiple Airlines
Sun 2/17:27 pmSAN - GEG
Nonstop2h 59mMultiple Airlines
Deal found 1/7$161
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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.
Sun 2/227:00 amBOI - SAN
Nonstop2h 26mAlaska Airlines
Wed 2/2510:29 amSAN - BOI
2 stops11h 11mAlaska Airlines
Deal found 1/6$162
This Southwest deal was found by Cheapflights users on 1/7. 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.
Wed 3/256:30 amGEG - SAN
2 stops7h 40mSouthwest
Wed 4/17:00 pmSAN - GEG
1 stop5h 10mSouthwest
Deal found 1/7$162
This Alaska Airlines deal was found by Cheapflights users on 1/7. 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.
Mon 3/98:25 amBOI - SAN
1 stop26h 26mAlaska Airlines
Wed 3/119:49 pmSAN - BOI
2 stops12h 51mAlaska Airlines
Deal found 1/7$163

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 January 8, 2026.
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

Tue 2/3

6:48 am-9:47 am

Nonstop2h 59m

San Diego

Tue 2/10

11:03 am-2:06 pm

Nonstop3h 03m

$147

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Wed 2/25

1:23 pm-6:30 pm

1 stop5h 07m

San Diego

Wed 2/25

9:00 pm-11:59 pm

Nonstop2h 59m

$151

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 2/3

9:20 am-4:45 pm

1 stop7h 25m

San Diego

Tue 2/10

4:20 pm-9:45 pm

1 stop5h 25m

$157

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 1/27

6:48 am-9:47 am

Nonstop2h 59m

San Diego

Sat 1/31

6:15 am-12:44 pm

1 stop6h 29m

$162

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sat 2/21

4:28 pm-8:59 pm

1 stop4h 31m

San Diego

Tue 2/24

9:00 pm-11:59 pm

Nonstop2h 59m

$162

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Mon 4/13

2:15 pm-3:25 pm

Nonstop2h 10m

San Diego

Wed 4/15

1:20 pm-4:40 pm

Nonstop2h 20m

$167

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sat 2/21

12:35 pm-4:55 pm

1 stop4h 20m

San Diego

Tue 3/3

6:50 am-1:25 pm

2 stops6h 35m

$167

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Sat 4/11

6:32 am-7:56 am

Nonstop2h 24m

San Diego

Sat 4/18

10:11 am-1:38 pm

Nonstop2h 27m

$168

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Thu 4/9

8:04 pm-9:23 pm

Nonstop2h 19m

San Diego

Mon 4/13

9:01 pm-10:52 pm

1 stop24h 51m

$173

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Tue 1/27

8:10 am-11:55 am

1 stop4h 45m

San Diego

Sat 1/31

10:30 am-6:22 pm

2 stops6h 52m

$174

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

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, March is the cheapest month in which you can book a flight from Idaho to San Diego (average of $75). Flying from Idaho to San Diego in December is currently the most expensive (average of $168). 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 January 8, 2026.

When flying from Idaho to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 12% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Idaho to San Diego. Price data was last updated on January 3, 2026.

Travelers seeking maximum savings on their Idaho to San Diego flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 January 8, 2026.

The most flights from USID to SAN are scheduled on a Monday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 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 13 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 Alaska Airlines, Southwest, and Delta fly from Idaho to San Diego in about 2h 59m. The time it takes to get you to your destination can typically vary by up to 4h 26m. 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 Spirit Airlines, with whom users have recently found tickets for as low as $33. However, be on the lookout for offers from Delta and Alaska 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 Boise Air Term. Gowen Fld - San Diego or Idaho Falls Fanning Field - San Diego, Spokane - 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 (90%), Alaska Airlines (86%), Hawaiian Airlines (86%).

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

    The cheapest flight price from Idaho to San Diego is $78. On average you can expect to pay $280. The most popular route, (Spokane - San Diego), can usually be booked for $137.

  • 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, March is the cheapest month in which you can book a flight from Idaho to San Diego (average of $75). Flying from Idaho to San Diego in December is currently the most expensive (average of $168). 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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Alternative routes for Idaho to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$76Average$195FlexibilityNo cancel feeOn-time65%
DeltaCheapest$111Average$387FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$137Average$296FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$138Average$325FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$147Average$364FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$172Average$288FlexibilityNo cancel feeOn-time63%

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