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$65+ Cheap flights from San Diego (SAN) to Idaho

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BOI
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from San Diego to Idaho

Keep the following information in mind while searching for San Diego to Idaho flight deals. Data was last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$124
(Kiwi.com)

One-way from

$65
(Mytrip)

Popular in

March

Cheapest in

September

Average price

$301

Good round-trip deal

$181 or less

Good one-way deal

$168 or less
Provider with most accurate pricing for San Diego-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for San Diego-Boise Air Term. Gowen Fld flights.
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From San Diego to Idaho
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One-way flight from San Diego to Idaho
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Highest demand for flights based on searches. 9% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from San Diego to Idaho.
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Price to beat on a one-way flight from San Diego to Idaho.
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Find flight deals from San Diego to Idaho

Cheapest flights from San Diego to Idaho
Explore the most affordable flight options available from San Diego to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Southwest deal was found by Cheapflights users on 10/26. 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.
Fri 12/51:30 pmSAN - GEG
1 stop8h 55mSouthwest
Sun 12/710:05 amGEG - SAN
1 stop4h 20mSouthwest
Deal found 10/26$132
This Southwest deal was found by Cheapflights users on 10/27. 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.
Fri 12/52:40 pmSAN - BOI
Nonstop2h 10mSouthwest
Mon 12/81:25 pmBOI - SAN
Nonstop2h 10mSouthwest
Deal found 10/27$137
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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 12/38:58 pmSAN - GEG
Nonstop3h 01mAlaska Airlines
Tue 12/97:00 amGEG - SAN
Nonstop3h 00mAlaska Airlines
Deal found 10/28$137
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/410:57 amSAN - GEG
1 stop5h 09mFrontier
Sun 12/712:08 pmGEG - SAN
1 stop7h 07mFrontier
Deal found 10/28$143
This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/228:19 pmSAN - BOI
Nonstop2h 25mAlaska Airlines
Tue 11/257:00 amBOI - SAN
Nonstop2h 24mAlaska Airlines
Deal found 10/27$146
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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 12/28:58 pmSAN - GEG
Nonstop3h 01mAlaska Airlines
Tue 12/97:00 amGEG - SAN
Nonstop3h 00mAlaska Airlines
Deal found 10/28$147
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 12/49:10 amSAN - BOI
Nonstop2h 32mHawaiian Airlines
Mon 12/87:00 amBOI - SAN
Nonstop2h 29mHawaiian Airlines
Deal found 10/29$149
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:41 amSAN - BOI
1 stop28h 02mFrontier
Sun 11/1612:28 pmBOI - SAN
1 stop23h 49mFrontier
Deal found 10/28$152
This Mytrip deal was found by Cheapflights users on 10/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:41 amSAN - GEG
1 stop28h 27mFrontier
Sun 11/1612:03 pmGEG - SAN
1 stop23h 14mFrontier
Deal found 10/27$153
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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 12/118:29 pmSAN - BOI
Nonstop2h 26mAlaska Airlines
Sat 12/137:46 pmBOI - SAN
Nonstop2h 28mAlaska Airlines
Deal found 10/28$157
This Delta deal was found by Cheapflights users on 10/28. 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.
Wed 12/39:50 amSAN - GEG
1 stop5h 50mDelta
Sat 12/63:15 pmGEG - SAN
1 stop7h 39mDelta
Deal found 10/28$157
This Expedia deal was found by Cheapflights users on 10/26. 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.
Mon 12/88:29 pmSAN - BOI
Nonstop2h 26mMultiple Airlines
Fri 12/1212:44 pmBOI - SAN
1 stop7h 31mMultiple Airlines
Deal found 10/26$162

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Idaho 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 October 29, 2025.
Use the filters below to find and compare flights from San Diego to Idaho that are best for you.

Fly from

San Diego

Fly to

Idaho

Route

Depart

Return

Price

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Fri 12/5

1:30 pm-10:25 pm

1 stop8h 55m

Spokane

Sun 12/7

10:05 am-2:25 pm

1 stop4h 20m

$132

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Thu 12/11

8:29 pm-11:55 pm

Nonstop2h 26m

Boise Air Term. Gowen Fld

Sat 12/13

7:46 pm-9:14 pm

Nonstop2h 28m

$137

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Thu 12/4

1:41 pm-6:56 pm

1 stop5h 15m

Spokane

Mon 12/8

5:05 am-10:08 am

1 stop5h 03m

$137

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Tue 12/2

3:15 pm-8:57 pm

1 stop5h 42m

Spokane

Wed 12/10

5:05 am-10:08 am

1 stop5h 03m

$137

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Wed 12/3

8:58 pm-11:59 pm

Nonstop3h 01m

Spokane

Wed 12/10

7:00 am-10:00 am

Nonstop3h 00m

$137

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Tue 12/2

1:41 pm-8:57 pm

1 stop7h 16m

Spokane

Mon 12/8

1:15 pm-6:12 pm

1 stop4h 57m

$137

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Thu 12/4

1:25 pm-6:37 pm

1 stop5h 12m

Spokane

Wed 12/10

7:17 pm-11:59 pm

1 stop4h 42m

$137

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Sun 1/25

6:50 am-12:37 pm

1 stop5h 47m

Spokane

Sat 1/31

1:20 pm-8:43 pm

1 stop7h 23m

$137

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Mon 12/8

8:29 pm-11:55 pm

Nonstop2h 26m

Boise Air Term. Gowen Fld

Wed 12/17

9:59 am-1:59 pm

1 stop5h 00m

$147

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Fri 12/5

8:29 pm-11:55 pm

Nonstop2h 26m

Boise Air Term. Gowen Fld

Sun 12/7

9:59 am-1:59 pm

1 stop5h 00m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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

Have a flexible travel schedule? Discover the best time to fly to Idaho from San Diego 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 San Diego to Idaho

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

Currently, November is the cheapest month in which you can book a flight from San Diego to Idaho (average of $60). Flying from San Diego to Idaho in December is currently the most expensive (average of $147). 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 SAN to ID?

Find hourly flight availability from San Diego to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

It’s optimal to fly from San Diego to Idaho in the evening. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from San Diego to Idaho. Price data was last updated on October 26, 2025.

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

How much does it cost to fly round-trip from San Diego to Idaho?

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated October 29, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from San Diego to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,206 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,206 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,240 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
7,994 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,794 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
9,001 reviews
Alaska Airlines
8.0
Very good
11,206 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Idaho. 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 from for flights from San Diego to Idaho?

    For a flight from San Diego to Idaho, you will be flying from San Diego. San Diego (SAN) is just 2.6 mi from the center of the city.

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

    Flights from San Diego to Idaho have been viewed 17 times in the past calendar month.

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

    Airlines like Southwest, Alaska Airlines, and Delta fly from San Diego to Idaho in about 2h 26m. The time it takes to get you to your destination can typically vary by up to 6h 29m. San Diego and Idaho are separated by a distance of 750 mi. 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 San Diego to Idaho one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $66. However, be on the lookout for offers from Alaska Airlines and Southwest, as they are both options that can get you from San Diego to Idaho for a low price.

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

    Most travelers choose San Diego - Boise Air Term. Gowen Fld, San Diego - Spokane or San Diego - Jackson Hole when deciding on the best route from San Diego to Idaho.

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

    The top 3 most reliable airlines when flying from San Diego to Idaho are Hawaiian Airlines (87%), SkyWest Airlines (86%) and Alaska Airlines (86%).

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

    Looking at all options, your cheapest flight can be booked for $133. While the most popular route (San Diego - Boise Air Term. Gowen Fld) can be booked for $137 on average, our data indicates $232 when flying from San Diego to Idaho.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Diego to Idaho 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 San Diego to Idaho?

    Currently, November is the cheapest month in which you can book a flight from San Diego to Idaho (average of $60). Flying from San Diego to Idaho in December is currently the most expensive (average of $147). 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

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Alternative routes for San Diego to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from San Diego to Idaho

Discover the top 6 airlines that operate flights from San Diego to Idaho. 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$100Average$217FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$155Average$274FlexibilityNo cancel feeOn-time85%
DeltaCheapest$156Average$418FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$157Average$283FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$170Average$353FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$202Average$410FlexibilityNo cancel feeOn-time69%

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