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Cheap Flights from Boise to San Diego

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Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Boise to San Diego

Explore current cheapest deals departing from Boise to San Diego

Round trip

Sort by: Cheapest

October 15 - October 20

Cheapest

Best

BOI - San Diego

$184

$151

Round trip

November 18 - December 15

BOI - San Diego

$172

$157

Round trip

August 5 - August 12

BOI - San Diego

$154

$157

Round trip

July 14 - August 12

Earliest

BOI - San Diego

$159

$157

Round trip

November 10 - December 8

BOI - San Diego

$170

$157

Round trip

November 17 - December 15

BOI - San Diego

$170

$157

Round trip

November 18 - December 8

BOI - San Diego

$173

$157

Round trip

November 17 - December 8

BOI - San Diego

$171

$157

Round trip

August 18 - September 2

BOI - San Diego

$140

$157

Round trip

August 5 - September 2

BOI - San Diego

$129

$157

Round trip

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Route Intelligence — 486,190 Searches this Week

Insights for flights from Boise to San Diego

Most itineraries for flights from Boise to San Diego connect at least once, with only 36.9% of recent fares being non-stop. When connecting, the typical number of stopovers is 1. This means you'll often find yourself with a layover on your journey.

When looking for cheap flights from Boise to San Diego, prices typically range from $177–$371, with a median of $270. Right now, fares are significantly above the typical level. There are currently no recent fares classified as a good price, suggesting that current prices are higher than usual for this route. New deals appear almost daily, so setting up a price alert could be beneficial.

The cheapest time to fly from Boise to San Diego is typically in March, with a median fare of just $80. Other affordable months include January, with a median of $138, and April, where the median fare is $141. These months offer the most budget-friendly options for this route.

A typical journey from Boise to San Diego takes about 6h 37m, including connections. Given that most itineraries involve at least one stopover, this duration reflects the total travel time from departure to arrival, encompassing any layovers. The route covers a distance of 1207 kilometers, classifying it as a short-haul flight.

How much is a round trip from Boise to San Diego

Regular price: $143 - $311

Prices are currently within the regular range for flights from Boise to San Diego.

The regular price range for flights from Boise to San Diego is between $143 and $311. The current lowest deal is $151 with Alaska Airlines, Inc. for travel from Oct 15-Oct 20.

now $151

Low $143

High $311

The cheapest time to fly from Boise to San Diego

Flights from Boise to San Diego are cheapest in March, with a median price of $80. The most expensive month to fly is July, with a median price of $417. Prices are generally lower from January to December.

March

Cheapest

Flights from $80

July

Most Expensive

Flights from $417

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Boise to San Diego

Alaska Airlines, Inc.

Last-minute flights going from Boise to San Diego

Thu, Jun 18

⌛ Last-Minute

BOI - San Diego

Boise (BOI) - San Diego (SAN)

United Airlines

$448

$351

One-way

Thu, Jun 18

⌛ Last-Minute

BOI - San Diego

Boise (BOI) - San Diego (SAN)

United Airlines

$451

$433

One-way

Fri, Jun 19

⌛ Last-Minute

BOI - San Diego

Boise (BOI) - San Diego (SAN)

United Airlines

$454

$373

One-way

Mon, Jun 22

⌛ Last-Minute

BOI - San Diego

Boise (BOI) - San Diego (SAN)

Southwest Airlines

$416

$388

One-way

Thu, Jun 25

⌛ Last-Minute

BOI - San Diego

Boise (BOI) - San Diego (SAN)

Alaska Airlines, Inc.

$247

$246

One-way

Thu, Jun 25

⌛ Last-Minute

BOI - San Diego

Boise (BOI) - San Diego (SAN)

Alaska Airlines, Inc.

$380

$324

One-way

Biggest price drops on these dates for flights from Boise to San Diego

3 nights

Jul 1 - Jul 4

$317 → $189

40%

3 nights

Dec 6 - Dec 9

$321 → $208

35%

4 nights

Oct 16 - Oct 20

$294 → $186

37%

3 nights

Jul 18 - Jul 21

$287 → $190

34%

Popular Airports to fly from Boise to San Diego

Boise - San Diego route insights

💸 Price insights

Recent fares are above the typical level

Recent fares for Boise to San Diego are above the typical level for the last 90 days.

📅 Best time to fly

March is historically cheapest at $80

Historically, March is the cheapest month to fly from Boise to San Diego, with a median price of $80.

⏱️ Flight duration

Median flight time is 6h 37m

The median flight time from Boise to San Diego is 6 hours and 37 minutes.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights make up 63.1% of deals, with a median of 1 stopover.

🏆 Airline highlight

Alaska Airlines offers direct flights

Alaska Airlines, Inc. has offered direct flights on this route historically.

🎯 Booking tip

Deals are frequent on this route

Deals for flights from Boise to San Diego are frequent, with over 1 deal per day.

Boise main airports to depart from

Boise (BOI)

Cheapest

Boise Airport (BOI) is a good choice for flights from Boise to San Diego.

📍 ~5 km from city center (reachable by car)

💸 Flights from ~$151

San Diego main airports to arrive at

San Diego International (SAN)

Cheapest

San Diego International Airport is a convenient arrival option for flights from Boise to San Diego.

📍 ~5 km from San Diego (reachable by car)

💸 Flights from ~$151

McClellan–Palomar (CLD)

McClellan–Palomar Airport is an alternative arrival option for flights from Boise to San Diego.

📍 ~50 km from San Diego (reachable by car)

💸 Flights from ~$356

Airports nearby San Diego used as alternative

Tijuana International (TIJ)

Tijuana International (TIJ) is an excellent alternative for domestic Mexico flights, offering direct access via the Cross Border Xpress (CBX) terminal.

📍 ~25 km from San Diego (reachable by car)

💸 Flights from ~$542

John Wayne (SNA)

Cheapest

John Wayne (SNA) is the closest major US domestic alternative, offering a strong domestic network with many major carriers.

📍 ~135 km from San Diego (reachable by car)

💸 Flights from ~$126

Los Angeles International (LAX)

Los Angeles International (LAX) is a primary global hub with the most extensive international and domestic route options.

📍 ~180 km from San Diego (reachable by car)

💸 Flights from ~$179

Ontario International (ONT)

Ontario International (ONT) is a reliable domestic alternative with growing service, often less congested than LAX or SNA.

📍 ~170 km from San Diego (reachable by car)

💸 Flights from ~$157

Long Beach (LGB)

Long Beach (LGB) is very easy to navigate with fast security processing, a good alternative for specific West Coast routes.

📍 ~150 km from San Diego (reachable by car)

💸 Flights from ~$216

Business & First Class Flight Deals to San Diego

37% AI deal score

$1,967

Frequently Asked Questions About Flights to San Diego

Historically, the optimal time to book flights from Boise to San Diego is typically 60+ days before departure. During this period, the average price for flights was $241. Booking within 14-27 days of travel also showed favorable pricing, with an average of $257. However, waiting until 7-13 days before departure saw average prices rise to $382, and prices for flights booked 0-6 days out averaged $371.

A flight from Boise to San Diego is considered a good deal if it is priced at or below $177. This threshold represents the lowest 25% of prices observed across the trailing quarter. The median price for this route over the same period was $270, with 75% of prices being $371 or less. These figures are based on data collected over a 90-day window.

Historically, the cheapest months to fly from Boise to San Diego are March, January, and April. March typically offers the lowest median price at $80. January follows with a median price of $138, and April has a median price of $141. The annual median price for this route is $270, based on data from a 270-day window.

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Cheap Flights from Boise to San Diego

Today’s best flight deals from Boise to San Diego

Unlock all 500+ flight deals to San Diego and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Boise to San Diego

How much is a round trip from Boise to San Diego

The cheapest time to fly from Boise to San Diego

Direct flights from Boise to San Diego

Last-minute flights going from Boise to San Diego

Biggest price drops on these dates for flights from Boise to San Diego

Popular Airports to fly from Boise to San Diego

Boise - San Diego route insights

Recent fares are above the typical level

March is historically cheapest at $80

Median flight time is 6h 37m

Connecting flights are dominant

Alaska Airlines offers direct flights

Deals are frequent on this route

Boise main airports to depart from

San Diego main airports to arrive at

Airports nearby San Diego used as alternative

Business & First Class Flight Deals to San Diego

Best Elite deals to San Diego

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Frequently Asked Questions About Flights to San Diego

When is the best time to book flights from Boise to San Diego?

When is the best time to book flights from Boise to San Diego?

How do I know if a Boise to San Diego flight is a good deal?

How do I know if a Boise to San Diego flight is a good deal?

When is the cheapest time of year to fly from Boise to San Diego?

When is the cheapest time of year to fly from Boise to San Diego?

Can I fly direct from Boise to San Diego?

Can I fly direct from Boise to San Diego?