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Idaho

$42+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BOI
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$89
(Southwest)

One-way from

$42
(Southwest)

Popular in

March

Cheapest in

April

Average price

$272

Good round-trip deal

$177 or less

Good one-way deal

$108 or less
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. 8% potential increase in price ($29 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 September 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 September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/9. 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 10/2210:30 amSAN - BOI
Nonstop2h 15mSouthwest
Sat 10/256:45 amBOI - SAN
Nonstop2h 15mSouthwest
Deal found 9/9$89
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/157:50 pmSAN - BOI
Nonstop2h 32mAlaska Airlines
Wed 10/227:13 amBOI - SAN
Nonstop2h 32mAlaska Airlines
Deal found 9/10$103
This Southwest deal was found by Cheapflights users on 9/11. 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 10/78:15 amSAN - BOI
1 stop6h 20mSouthwest
Sat 10/112:50 pmBOI - SAN
1 stop7h 30mSouthwest
Deal found 9/11$109
This Southwest deal was found by Cheapflights users on 9/10. 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.
Sat 10/1811:40 amSAN - BOI
Nonstop2h 25mSouthwest
Wed 10/223:15 pmBOI - SAN
Nonstop2h 15mSouthwest
Deal found 9/10$111
This Southwest deal was found by Cheapflights users on 9/11. 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.
Sat 11/1510:15 amSAN - BOI
Nonstop2h 20mSouthwest
Mon 11/171:25 pmBOI - SAN
Nonstop2h 10mSouthwest
Deal found 9/11$114
This Hawaiian Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 10/187:50 pmSAN - BOI
Nonstop2h 32mHawaiian Airlines
Wed 10/227:13 amBOI - SAN
Nonstop2h 32mHawaiian Airlines
Deal found 9/11$120
This Southwest deal was found by Cheapflights users on 9/9. 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 9/301:35 pmSAN - BOI
Nonstop2h 15mSouthwest
Mon 10/66:55 pmBOI - SAN
1 stop4h 35mSouthwest
Deal found 9/9$123
This Southwest deal was found by Cheapflights users on 9/10. 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 10/216:30 amSAN - GEG
1 stop4h 45mSouthwest
Sat 10/257:40 amGEG - SAN
1 stop6h 25mSouthwest
Deal found 9/10$127
This Southwest deal was found by Cheapflights users on 9/11. 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.
Sat 10/258:30 amSAN - GEG
1 stop4h 55mSouthwest
Sat 11/111:10 amGEG - SAN
1 stop6h 10mSouthwest
Deal found 9/11$132
This Southwest deal was found by Cheapflights users on 9/9. 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 10/153:35 pmSAN - GEG
1 stop6h 50mSouthwest
Wed 10/2212:50 pmGEG - SAN
1 stop7h 15mSouthwest
Deal found 9/9$134
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 10/227:50 pmSAN - GEG
Nonstop2h 51mAlaska Airlines
Sat 11/17:00 amGEG - SAN
Nonstop2h 58mAlaska Airlines
Deal found 9/11$137
This SmartFares deal was found by Cheapflights users on 9/10. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:03 pmSAN - GEG
Nonstop2h 49mHawaiian Airlines
Sun 10/197:00 amGEG - SAN
Nonstop2h 55mHawaiian Airlines
Deal found 9/10$139

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 September 11, 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 DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 10/8

7:50 pm-11:22 pm

Nonstop2h 32m

Boise Air Term. Gowen Fld

Wed 10/15

7:13 am-8:45 am

Nonstop2h 32m

$103

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Tue 10/21

7:58 am-11:34 am

Nonstop2h 36m

Boise Air Term. Gowen Fld

Wed 10/22

7:10 pm-8:49 pm

Nonstop2h 39m

$103

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Sat 10/25

11:40 am-3:05 pm

Nonstop2h 25m

Boise Air Term. Gowen Fld

Wed 11/5

1:25 pm-2:35 pm

Nonstop2h 10m

$106

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 10/22

9:30 am-2:25 pm

1 stop3h 55m

Boise Air Term. Gowen Fld

Sat 10/25

2:15 pm-5:20 pm

1 stop4h 05m

$109

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Sat 10/25

7:50 pm-11:22 pm

Nonstop2h 32m

Boise Air Term. Gowen Fld

Wed 11/5

7:45 pm-9:14 pm

Nonstop2h 29m

$120

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Sat 10/18

7:50 pm-11:22 pm

Nonstop2h 32m

Boise Air Term. Gowen Fld

Tue 10/21

7:13 am-8:45 am

Nonstop2h 32m

$120

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Tue 9/30

1:35 pm-4:50 pm

Nonstop2h 15m

Boise Air Term. Gowen Fld

Mon 10/6

6:55 pm-10:30 pm

1 stop4h 35m

$123

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 10/15

7:50 pm-11:22 pm

Nonstop2h 32m

Boise Air Term. Gowen Fld

Tue 10/21

10:15 am-3:06 pm

1 stop5h 51m

$124

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Sat 10/18

2:55 pm-11:05 pm

1 stop7h 10m

Boise Air Term. Gowen Fld

Wed 10/22

12:40 pm-5:35 pm

1 stop5h 55m

$136

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Tue 10/7

7:50 pm-10:41 pm

Nonstop2h 51m

Spokane

Sat 10/11

7:00 am-9:55 am

Nonstop2h 55m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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, October is the cheapest month in which you can book a flight from San Diego to Idaho (average of $314). Flying from San Diego to Idaho in June is currently the most expensive (average of $398). 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 September 11, 2025.

When flying from San Diego to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from San Diego to Idaho

Explore weekly flight availability from San Diego to Idaho. 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 11, 2025.

The most flights from SAN to USID are scheduled on a Wednesday (7 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

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 September 11, 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
10,000 reviews

Crew

8.5

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Boarding

8.1

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Boarding

8.1

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
4,248 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Boarding

8.1

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
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Boarding

8.1

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
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Boarding

8.1

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
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Boarding

8.1

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 16 times in the past calendar month.

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

    Airlines like Alaska Airlines, Southwest, and Hawaiian Airlines fly from San Diego to Idaho in about 2h 25m. The time it takes to get you to your destination is usually consistent. San Diego and Idaho are separated by a distance of 750 mi. Most flights are nonstop.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $42. However, be on the lookout for offers from Alaska Airlines and Hawaiian Airlines, 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 SkyWest Airlines (86%), Hawaiian Airlines (86%) and Alaska Airlines (85%).

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

    Looking at all options, your cheapest flight can be booked for $68. While the most popular route (San Diego - Boise Air Term. Gowen Fld) can be booked for $89 on average, our data indicates $212 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, October is the cheapest month in which you can book a flight from San Diego to Idaho (average of $314). Flying from San Diego to Idaho in June is currently the most expensive (average of $398). 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

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Top 7 airlines flying from San Diego to Idaho

Discover the top 7 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$88Average$206FlexibilityNo cancel feeOn-time65%
DeltaCheapest$144Average$409FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$159Average$298FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$182Average$348FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$197Average$277FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$202Average$380FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$264Average$371FlexibilityNo cancel feeOn-time71%

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