Idaho

$69+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BOI
Apr 15 — Apr 221
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Cheap 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 March 16, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Sat 5/27:24 pm
SAN
-
GEG
Nonstop2h 56m
Alaska Airlines
Tue 5/510:30 am
GEG
-
SAN
Nonstop2h 48m
Alaska Airlines
Deal found 3/12$137
This Southwest deal was found by Cheapflights users on 3/12. 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 5/21:50 pm
SAN
-
GEG
2 stops8h 25m
Southwest
Sat 5/911:05 am
GEG
-
SAN
Nonstop2h 40m
Southwest
Deal found 3/12$152
This Southwest deal was found by Cheapflights users on 3/12. 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 4/221:20 pm
SAN
-
BOI
Nonstop2h 20m
Southwest
Tue 4/281:05 pm
BOI
-
SAN
Nonstop2h 15m
Southwest
Deal found 3/12$157
This Expedia deal was found by Cheapflights users on 3/14. 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.
Wed 4/1512:37 pm
SAN
-
GEG
Nonstop2h 57m
Alaska Airlines
Sun 4/197:19 am
GEG
-
SAN
Nonstop2h 51m
Alaska Airlines
Deal found 3/14$157
This Southwest deal was found by Cheapflights users on 3/12. 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 4/259:40 am
SAN
-
GEG
Nonstop2h 45m
Southwest
Mon 4/275:35 pm
GEG
-
SAN
1 stop4h 25m
Southwest
Deal found 3/12$163
This Southwest deal was found by Cheapflights users on 3/11. 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.
Thu 4/236:35 pm
SAN
-
BOI
Nonstop2h 15m
Southwest
Sat 4/253:25 pm
BOI
-
SAN
1 stop3h 35m
Southwest
Deal found 3/11$164
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 4/226:03 pm
SAN
-
BOI
Nonstop2h 23m
Alaska Airlines
Tue 4/286:08 pm
BOI
-
SAN
1 stop5h 28m
Alaska Airlines
Deal found 3/13$167
This CheapOair deal was found by Cheapflights users on 3/12. 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.
Sat 4/257:24 pm
SAN
-
GEG
Nonstop2h 56m
Alaska Airlines
Mon 4/277:27 am
GEG
-
SAN
Nonstop2h 48m
Alaska Airlines
Deal found 3/12$167
This Southwest deal was found by Cheapflights users on 3/13. 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 4/85:45 pm
SAN
-
BOI
1 stop4h 35m
Southwest
Sat 4/113:25 pm
BOI
-
SAN
1 stop3h 35m
Southwest
Deal found 3/13$172
This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Tue 4/75:20 pm
SAN
-
BOI
1 stop4h 32m
Hawaiian Airlines
Thu 4/98:04 pm
BOI
-
SAN
Nonstop2h 19m
Hawaiian Airlines
Deal found 3/15$173
This Expedia deal was found by Cheapflights users on 3/14. 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.
Wed 4/1512:37 pm
SAN
-
GEG
Nonstop2h 57m
Multiple Airlines
Sun 4/1911:44 am
GEG
-
SAN
1 stop20h 50m
Multiple Airlines
Deal found 3/14$174
This Expedia deal was found by Cheapflights users on 3/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:24 pm
SAN
-
GEG
Nonstop2h 56m
Alaska Airlines
Sun 4/267:27 am
GEG
-
SAN
Nonstop2h 48m
Alaska Airlines
Deal found 3/11$177

Find 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 March 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$137
(Alaska Airlines)

One-way from

$69
(Alaska Airlines)

Popular in

November

Cheapest in

February

Average price

$307

Good round-trip deal

$247 or less

Good one-way deal

$130 or less
Provider with most accurate pricing for San Diego-Boise Air Term. Gowen Fld flight deals.
Provider most trusted by Cheapflights users for San Diego-Boise Air Term. Gowen Fld flights.
From San Diego to Idaho
One-way flight from San Diego to Idaho
Highest demand for flights based on searches. 10% potential increase in price ($33 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in March 2026
Price to beat on a round-trip flight from San Diego to Idaho.
Price to beat on a one-way flight from San Diego to Idaho.

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 March 16, 2026.
Use the filters below to find and compare flights from San Diego to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Sat 5/2

7:24 pm-10:20 pm

Nonstop2h 56m

Spokane

Tue 5/5

10:30 am-1:18 pm

Nonstop2h 48m

$137

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 4/15

8:18 pm-11:47 pm

Nonstop2h 29m

Boise Air Term. Gowen Fld

Sat 4/18

8:04 pm-9:23 pm

Nonstop2h 19m

$157

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Sat 5/2

5:55 pm-10:33 pm

1 stop4h 38m

Spokane

Tue 5/5

6:15 am-12:38 pm

1 stop6h 23m

$177

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Tue 4/21

11:30 am-4:25 pm

1 stop3h 55m

Boise Air Term. Gowen Fld

Fri 4/24

2:15 pm-3:25 pm

Nonstop2h 10m

$183

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Tue 4/7

5:20 pm-10:52 pm

1 stop4h 32m

Boise Air Term. Gowen Fld

Fri 4/10

6:32 am-7:56 am

Nonstop2h 24m

$187
Quickest round-trip

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Sat 4/25

7:37 pm-11:02 pm

Nonstop2h 25m

Boise Air Term. Gowen Fld

Wed 4/29

7:43 am-9:05 am

Nonstop2h 22m

$187

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Fri 5/8

7:37 pm-11:02 pm

Nonstop2h 25m

Boise Air Term. Gowen Fld

Tue 5/12

7:43 am-9:05 am

Nonstop2h 22m

$187

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Fri 4/24

10:40 am-5:00 pm

1 stop6h 20m

Spokane

Mon 4/27

2:50 pm-10:30 pm

2 stops7h 40m

$202

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Thu 4/9

6:35 pm-9:50 pm

Nonstop2h 15m

Boise Air Term. Gowen Fld

Mon 4/13

5:40 pm-10:30 pm

1 stop5h 50m

$207

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Fri 4/10

6:35 pm-9:50 pm

Nonstop2h 15m

Boise Air Term. Gowen Fld

Fri 4/17

7:55 pm-11:05 pm

1 stop4h 10m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/14

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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 $142). 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 March 16, 2026.

It’s optimal to fly from San Diego to Idaho at noon. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the morning.

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 March 16, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta 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.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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?

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

    Airlines like Alaska Airlines, Delta, and Southwest fly from San Diego to Idaho in about 2h 56m. The time it takes to get you to your destination can typically vary by up to 1h 42m. San Diego and Idaho are separated by a distance of 1028 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 Delta, with whom users have recently found tickets for as low as $78. 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?

  • 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 (83%), SkyWest Airlines (80%) and Alaska Airlines (80%).

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

    Looking at all options, your cheapest flight can be booked for $98. While the most popular route (San Diego - Spokane) can be booked for $177 on average, our data indicates $257 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 $142). 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.

Top 5 airlines flying from San Diego to Idaho

Discover the top 5 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 March 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$144Average$386FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$155Average$267FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$157Average$274FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$157Average$329FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$185Average$474FlexibilityNo cancel feeOn-time69%

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