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Idaho

$41+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BOI
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$131
(CheapOair)

One-way from

$41
(FlightHub)

Popular in

March

Cheapest in

April

Average price

$342

Good round-trip deal

$198 or less

Good one-way deal

$98 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 ($30 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 July 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 July 30, 2025.

This CheapOair deal was found by Cheapflights users on 7/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:15 amSAN - BOI
1 stop6h 06mSpirit Airlines
Sun 9/212:16 pmBOI - SAN
1 stop10h 08mSpirit Airlines
Deal found 7/29$131
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 9/188:21 pmSAN - BOI
Nonstop2h 22mAlaska Airlines
Sun 9/217:07 amBOI - SAN
Nonstop2h 23mAlaska Airlines
Deal found 7/30$137
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:50 pmSAN - GEG
Nonstop2h 51mHawaiian Airlines
Sat 10/117:00 amGEG - SAN
Nonstop2h 55mHawaiian Airlines
Deal found 7/29$137
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/253:20 pmSAN - BOI
1 stop7h 45mSouthwest
Mon 9/2912:05 pmBOI - SAN
Nonstop2h 10mSouthwest
Deal found 7/29$147
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/28:03 pmSAN - GEG
Nonstop2h 49mAlaska Airlines
Thu 9/117:00 amGEG - SAN
Nonstop2h 52mAlaska Airlines
Deal found 7/29$147
This Trip.com deal was found by Cheapflights users on 7/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/128:21 pmSAN - BOI
Nonstop2h 22mHawaiian Airlines
Fri 9/197:07 amBOI - SAN
Nonstop2h 23mHawaiian Airlines
Deal found 7/29$155
This Delta deal was found by Cheapflights users on 7/30. 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 8/2711:05 amSAN - GEG
1 stop5h 44mDelta
Tue 9/25:00 amGEG - SAN
1 stop5h 00mDelta
Deal found 7/30$157
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/182:00 pmSAN - GEG
1 stop7h 40mSouthwest
Tue 11/255:05 pmGEG - SAN
1 stop5h 55mSouthwest
Deal found 7/29$162
This Mytrip deal was found by Cheapflights users on 7/28. 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.
Thu 9/48:25 amSAN - GEG
1 stop11h 51mMultiple Airlines
Sun 9/79:06 pmGEG - SAN
1 stop10h 23mMultiple Airlines
Deal found 7/28$168
This Mytrip deal was found by Cheapflights users on 7/27. 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.
Fri 8/158:16 amSAN - IDA
1 stop9h 25mMultiple Airlines
Mon 8/186:20 pmIDA - SAN
1 stop14h 01mMultiple Airlines
Deal found 7/27$175
This CheapOair deal was found by Cheapflights users on 7/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:15 amSAN - BOI
1 stop6h 06mMultiple Airlines
Sun 10/1212:48 pmBOI - SAN
1 stop8h 20mMultiple Airlines
Deal found 7/29$189
This Delta deal was found by Cheapflights users on 7/28. 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.
Thu 8/217:15 pmSAN - BOI
1 stop4h 00mDelta
Sun 8/317:30 amBOI - SAN
1 stop6h 32mDelta
Deal found 7/28$197

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 July 30, 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

Thu 9/18

6:15 am-1:21 pm

1 stop6h 06m

Boise Air Term. Gowen Fld

Sun 9/21

2:16 pm-11:24 pm

1 stop10h 08m

$131

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Thu 9/18

8:21 pm-11:43 pm

Nonstop2h 22m

Boise Air Term. Gowen Fld

Sun 9/21

7:07 am-8:30 am

Nonstop2h 23m

$137

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

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Thu 9/25

3:20 pm-12:05 am

1 stop7h 45m

Boise Air Term. Gowen Fld

Mon 9/29

12:05 pm-1:15 pm

Nonstop2h 10m

$147

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Fri 9/12

8:21 pm-11:43 pm

Nonstop2h 22m

Boise Air Term. Gowen Fld

Fri 9/19

7:07 am-8:30 am

Nonstop2h 23m

$155

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 8/20

11:10 am-8:20 pm

1 stop8h 10m

Boise Air Term. Gowen Fld

Sat 9/6

6:00 pm-10:39 pm

1 stop5h 39m

$157

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Wed 8/27

11:05 am-4:49 pm

1 stop5h 44m

Spokane

Tue 9/2

5:00 am-10:00 am

1 stop5h 00m

$157

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Tue 11/18

2:00 pm-9:40 pm

1 stop7h 40m

Spokane

Tue 11/25

5:05 pm-11:00 pm

1 stop5h 55m

$162

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Tue 9/2

8:15 am-3:52 pm

1 stop7h 37m

Spokane

Thu 9/11

5:45 pm-11:53 pm

1 stop6h 08m

$166

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Thu 9/4

8:25 am-8:16 pm

1 stop11h 51m

Spokane

Sun 9/7

9:06 pm-7:29 am

1 stop10h 23m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 51 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 July 30, 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 July 30, 2025.

The most flights from SAN to USID are scheduled on a Monday (6 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 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 July 30, 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

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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.

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

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $41. However, be on the lookout for offers from Hawaiian 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 SkyWest Airlines (86%), Alaska Airlines (86%) and Hawaiian Airlines (84%).

  • 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 $112 on average our data indicates $237 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$88Average$184FlexibilityNo cancel feeOn-time65%
DeltaCheapest$144Average$419FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$166Average$310FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$182Average$343FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$202Average$395FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$207Average$279FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$264Average$371FlexibilityNo cancel feeOn-time71%

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