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$90+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SAN
Jun 9 — Jun 161
Tue 6/9
Tue 6/16
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to San Diego are usually found in February or April, booked 43 days in advance, depart on a Tuesday or Thursday and return on a Saturday

Cheap 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 May 10, 2026.

This United Airlines deal was found by Cheapflights users on 5/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:46 pm
BOI
-
SAN
1 stop5h 39m
United Airlines
Tue 7/1411:01 am
SAN
-
BOI
1 stop4h 43m
United Airlines
Deal found 5/5$179
This United Airlines deal was found by Cheapflights users on 5/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:05 pm
BOI
-
SAN
1 stop6h 26m
United Airlines
Wed 7/159:26 am
SAN
-
BOI
1 stop6h 18m
United Airlines
Deal found 5/7$189
This CheapOair deal was found by Cheapflights users on 5/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:49 pm
BOI
-
SAN
Nonstop2h 30m
Alaska Airlines
Sat 8/294:58 pm
SAN
-
BOI
Nonstop2h 22m
Alaska Airlines
Deal found 5/9$197
This American Airlines deal was found by Cheapflights users on 5/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:36 pm
BOI
-
SAN
1 stop4h 58m
American Airlines
Tue 8/49:41 am
SAN
-
BOI
1 stop6h 08m
American Airlines
Deal found 5/6$198
This United Airlines deal was found by Cheapflights users on 5/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:05 pm
BOI
-
SAN
1 stop6h 25m
United Airlines
Wed 6/1011:01 am
SAN
-
BOI
1 stop4h 43m
United Airlines
Deal found 5/7$201
This American Airlines deal was found by Cheapflights users on 5/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:40 pm
BOI
-
SAN
1 stop4h 54m
American Airlines
Sat 5/304:22 pm
SAN
-
BOI
1 stop5h 49m
American Airlines
Deal found 5/8$203
This Southwest deal was found by Cheapflights users on 5/8. 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 7/711:45 am
BOI
-
SAN
1 stop4h 30m
Southwest
Sat 7/118:20 pm
SAN
-
BOI
Nonstop2h 10m
Southwest
Deal found 5/8$207
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/261:25 pm
BOI
-
SAN
1 stop20h 17m
Frontier
Mon 6/19:37 am
SAN
-
BOI
1 stop25h 53m
Frontier
Deal found 5/5$208
This CheapOair deal was found by Cheapflights users on 5/6. 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.
Tue 5/261:25 pm
BOI
-
SAN
1 stop20h 17m
Frontier
Wed 6/39:37 am
SAN
-
BOI
1 stop26h 01m
Frontier
Deal found 5/6$210
This United Airlines deal was found by Cheapflights users on 5/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:05 pm
BOI
-
SAN
1 stop4h 44m
United Airlines
Sat 7/412:33 pm
SAN
-
BOI
1 stop7h 56m
United Airlines
Deal found 5/8$211
This Southwest deal was found by Cheapflights users on 5/5. 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 5/303:25 pm
BOI
-
SAN
1 stop3h 35m
Southwest
Sat 6/610:20 am
SAN
-
BOI
1 stop5h 10m
Southwest
Deal found 5/5$212
This United Airlines deal was found by Cheapflights users on 5/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/155:46 pm
BOI
-
SAN
1 stop5h 39m
United Airlines
Tue 6/169:11 am
SAN
-
BOI
1 stop6h 33m
United Airlines
Deal found 5/7$214

Find 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 May 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(Southwest)

One-way from

$90
(United Airlines)

Popular in

March

Cheapest in

February

Average price

$307

Good round-trip deal

$277 or less

Good one-way deal

$148 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-San Diego flights.
Search Deals
From Boise Air Term. Gowen Fld to San Diego
Search Deals
One-way flight from Boise Air Term. Gowen Fld to San Diego
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Boise Air Term. Gowen Fld to San Diego.
Search Deals
Price to beat on a one-way flight from Boise Air Term. Gowen Fld to San Diego.
Search Deals

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 May 10, 2026.
Use the filters below to find and compare flights from Boise to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Thu 7/16

5:46 pm-10:25 pm

1 stop5h 39m

San Diego

Wed 7/22

9:26 am-4:44 pm

1 stop6h 18m

$189

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 7/1

7:05 pm-12:31 am

1 stop6h 26m

San Diego

Wed 7/8

11:01 am-4:44 pm

1 stop4h 43m

$189

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Thu 7/2

7:40 pm-11:25 pm

1 stop4h 45m

San Diego

Mon 7/6

9:05 pm-12:20 am

Nonstop2h 15m

$207

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Sat 7/25

6:00 am-8:41 am

1 stop3h 41m

San Diego

Tue 7/28

11:06 am-5:24 pm

1 stop5h 18m

$217
Quickest round-trip

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 7/15

3:15 pm-4:25 pm

Nonstop2h 10m

San Diego

Sun 7/19

9:40 pm-12:50 am

Nonstop2h 10m

$237

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Mon 6/1

7:55 pm-11:05 pm

1 stop4h 10m

San Diego

Tue 6/30

6:50 pm-12:25 am

1 stop4h 35m

$237

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Sat 7/25

7:57 am-9:24 am

Nonstop2h 27m

San Diego

Tue 7/28

5:06 pm-8:25 pm

Nonstop2h 19m

$247

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Thu 6/4

9:50 pm-11:00 pm

Nonstop2h 10m

San Diego

Wed 6/10

6:50 pm-12:25 am

1 stop4h 35m

$248

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 8/5

8:00 pm-9:22 pm

Nonstop2h 22m

San Diego

Mon 8/10

1:09 pm-8:10 pm

1 stop6h 01m

$252

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 7/15

6:42 pm-11:50 pm

1 stop6h 08m

San Diego

Sun 7/19

5:01 pm-12:05 am

1 stop6h 04m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Boise to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to San Diego in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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?

To ensure you get the cheapest price possible for a flight from Boise to San Diego, you should look to book at least 42 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, February is the cheapest month in which you can book a flight from Boise to San Diego (average of $197). Flying from Boise to San Diego in March is currently the most expensive (average of $354). 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 May 10, 2026.

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 10% versus a flight in the evening.

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 May 2, 2026.

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 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 Boise to San Diego?

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 May 10, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta 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.
Southwest
8.0
Very good
4,305 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,305 reviews
Southwest
8.0
Very good
4,305 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Alaska Airlines
7.9
Good
12,348 reviews
Southwest
8.0
Very good
4,305 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,455 reviews
Southwest
8.0
Very good
4,305 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Hawaiian Airlines
7.8
Good
2,837 reviews
Southwest
8.0
Very good
4,305 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 is 1 outbound flight from Air Term. Gowen Fld to San Diego offered by 4 different airlines.

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

    Within the past month, 14 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 $217, United Airlines can have you in San Diego from Boise in 3h 41m. 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?

    Delta, at $111, was found to be the cheapest airline from Boise to San Diego.Alternate airlines to your destination round-trip include Hawaiian Airlines and Alaska Airlines. Users have found that Delta is 57% cheaper than the other options available to this destination.

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

    One-way options have recently been found by users for as low as $68 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $88 and Southwest from $88 one-way.

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

    Consider SkyWest Airlines (96%), Japan Airlines (94%) or Alaska Airlines (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 $88. On average you can expect to pay $255. The most popular route, (Boise Air Term. Gowen Fld - San Diego), can usually be booked for $197.

  • 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, February is the cheapest month in which you can book a flight from Boise to San Diego (average of $197). Flying from Boise to San Diego in March is currently the most expensive (average of $354). 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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Boise to San Diego

Discover the top 5 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 May 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$123Average$213FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$137Average$238FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$138Average$276FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$142Average$272FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$170Average$275FlexibilityNo cancel feeOn-time63%

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