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$42+ Cheap flights from Boise to San Diego (BOI - 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SAN
Oct 10 — Oct 171
Fri 10/10
Fri 10/17
1 adult, Economy
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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to San Diego are usually found in August or October, booked 54 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Boise to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 10, 2025.

Round-trip from

$145
(Southwest)

One-way from

$42
(Southwest)

Popular in

November

Cheapest in

August

Average price

$276

Good round-trip deal

$213 or less

Good one-way deal

$108 or less
From Boise Air Term. Gowen Fld to San Diego
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One-way flight from Boise Air Term. Gowen Fld to San Diego
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Highest demand for flights based on searches. 11% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 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 Boise Air Term. Gowen Fld to San Diego.
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Price to beat on a one-way flight from Boise Air Term. Gowen Fld to San Diego.
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Find flight deals from Boise to San Diego

Cheapest flights from Boise to San Diego
Explore the most affordable flight options available from Boise to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2025.

This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/143:15 pmBOI - SAN
Nonstop2h 15mSouthwest
Sat 10/186:20 amSAN - BOI
1 stop6h 45mSouthwest
Deal found 9/8$145
This Southwest deal was found by Cheapflights users on 9/7. 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 12/101:25 pmBOI - SAN
Nonstop2h 10mSouthwest
Mon 12/152:40 pmSAN - BOI
Nonstop2h 10mSouthwest
Deal found 9/7$147
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/82:00 pmBOI - SAN
1 stop5h 10mDelta
Sat 10/116:15 amSAN - BOI
1 stop6h 05mDelta
Deal found 9/10$148
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:13 amBOI - SAN
Nonstop2h 32mHawaiian Airlines
Sat 10/187:50 pmSAN - BOI
Nonstop2h 32mHawaiian Airlines
Deal found 9/10$150
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.
Mon 10/206:55 pmBOI - SAN
1 stop3h 55mSouthwest
Thu 10/303:05 pmSAN - BOI
Nonstop2h 10mSouthwest
Deal found 9/9$152
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.
Sat 10/116:45 amBOI - SAN
Nonstop2h 15mSouthwest
Tue 10/1410:30 amSAN - BOI
Nonstop2h 15mSouthwest
Deal found 9/9$154
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/229:00 amBOI - SAN
1 stop6h 11mDelta
Fri 10/311:15 pmSAN - BOI
1 stop4h 52mDelta
Deal found 9/8$157
This Orbitz deal was found by Cheapflights users on 9/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/269:26 pmBOI - SAN
1 stop11h 03mMultiple Airlines
Mon 9/298:21 pmSAN - BOI
Nonstop2h 22mMultiple Airlines
Deal found 9/8$159
This Hawaiian Airlines 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/227:13 amBOI - SAN
Nonstop2h 32mHawaiian Airlines
Fri 10/318:03 amSAN - BOI
Nonstop2h 30mHawaiian Airlines
Deal found 9/9$160
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/307:07 amBOI - SAN
Nonstop2h 23mMultiple Airlines
Fri 10/36:15 amSAN - BOI
1 stop13h 16mMultiple Airlines
Deal found 9/9$161
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.
Wed 10/811:30 amBOI - SAN
2 stops8h 50mSouthwest
Sat 10/116:20 amSAN - BOI
1 stop6h 45mSouthwest
Deal found 9/10$162
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/252:16 pmBOI - SAN
1 stop10h 18mSpirit Airlines
Sun 9/288:25 amSAN - BOI
1 stop3h 56mSpirit Airlines
Deal found 9/8$164

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 September 10, 2025.
Use the filters below to find and compare flights from Boise to San Diego that are best for you.

Fly from

Boise

Fly to

San Diego

Route

Depart

Return

Price

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 10/15

4:46 pm-10:31 pm

1 stop6h 45m

San Diego

Sat 10/18

6:15 am-1:20 pm

1 stop6h 05m

$148

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Mon 10/20

12:35 pm-1:50 pm

Nonstop2h 15m

San Diego

Sat 10/25

11:40 am-3:05 pm

Nonstop2h 25m

$148

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Tue 3/3

7:05 pm-8:29 pm

Nonstop2h 24m

San Diego

Wed 3/4

7:00 am-12:44 pm

1 stop4h 44m

$150

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 10/15

7:13 am-8:45 am

Nonstop2h 32m

San Diego

Sat 10/18

7:50 pm-11:22 pm

Nonstop2h 32m

$150

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Tue 10/21

7:13 am-8:45 am

Nonstop2h 32m

San Diego

Thu 10/23

7:50 pm-11:22 pm

Nonstop2h 32m

$150

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Thu 12/11

1:25 pm-2:35 pm

Nonstop2h 10m

San Diego

Mon 12/15

2:40 pm-5:50 pm

Nonstop2h 10m

$157

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Tue 3/3

7:05 pm-8:29 pm

Nonstop2h 24m

San Diego

Wed 3/4

7:00 am-10:24 am

Nonstop2h 24m

$160

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 10/22

7:13 am-8:45 am

Nonstop2h 32m

San Diego

Fri 10/31

8:03 am-11:33 am

Nonstop2h 30m

$160

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 10/22

7:40 am-2:11 pm

1 stop7h 31m

San Diego

Fri 10/31

1:40 pm-8:16 pm

1 stop5h 36m

$165

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 10/22

5:25 am-10:26 am

1 stop6h 01m

San Diego

Fri 10/24

7:10 pm-11:59 pm

1 stop3h 49m

$165

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 19 results
1
2

Best time to book a flight from Boise to San Diego

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

How far ahead should I book a flight from Boise to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Boise to San Diego. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Boise to San Diego, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from Boise to San Diego (average of $286). Flying from Boise to San Diego in March is currently the most expensive (average of $366). 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 BOI to SAN?

Find hourly flight availability from Boise 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 September 10, 2025.

When flying from Boise to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 15% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Boise to San Diego. Price data was last updated on September 7, 2025.

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

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated September 10, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Boise to San Diego have to say. 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

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

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

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

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
4,249 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

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
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

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

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

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.
Spirit Airlines
6.3
Okay
8,024 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

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 Boise 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 airports do I use to fly from Boise to San Diego?

    To fly from Boise to San Diego, you need to book a flight from Air Term. Gowen Fld (BOI) to San Diego (SAN). Nonstop flights to San Diego from Boise Air Term. Gowen Fld take 2h 10m on average. When it comes time to book airfare, you have a few options: there are 5 outbound flights from Air Term. Gowen Fld to San Diego offered by 6 different airlines.

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

    Within the past month, 15 users have taken a look at flights from Boise Air Term. Gowen Fld to San Diego.

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

    For as low as $148, Delta can have you in San Diego from Boise in 2h 15m. The distance between Boise and San Diego is about 750 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Boise to San Diego round-trip?

    Spirit Airlines, at $96, was found to be the cheapest airline from Boise to San Diego.Alternate airlines to your destination round-trip include Hawaiian Airlines and Delta. Users have found that Spirit Airlines is 68% cheaper than the other options available to this destination.

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

    Consider Japan Airlines (93%), SkyWest Airlines (86%) or Southwest (84%) when booking your flight. These represent the most reliable airlines when flying from Boise to San Diego.

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

    The cheapest flight price from Boise to San Diego is $83. On average you can expect to pay $253. The most popular route, (Boise Air Term. Gowen Fld - San Diego), can usually be booked for $118.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Boise to San Diego (average of $286). Flying from Boise to San Diego in March is currently the most expensive (average of $366). 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
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

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Alternative routes for Boise to San Diego

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Top 6 airlines flying from Boise to San Diego

Discover the top 6 airlines that operate flights from Boise 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 September 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$96Average$178FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$137Average$300FlexibilityNo cancel feeOn-time85%
DeltaCheapest$156Average$216FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$170Average$342FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$178Average$306FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$186Average$302FlexibilityNo cancel feeOn-time69%

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