Are there direct flights from Boston to San Diego?

Historically, approximately 30% of flights from Boston to San Diego have been direct. This indicates that a significant portion of travelers on this route will likely have at least one stopover. For flights that do include connections, the median number of stopovers is typically two. Travelers preferring direct routes should consider this proportion when planning their journey.

How long does it take to fly from Boston to San Diego?

The typical direct flight from Boston to San Diego has a median duration of 6 hours and 17 minutes. For flights that include one stop, the median travel time increases to 10 hours and 1 minute. This difference in duration reflects the added time for layovers and connecting flights. The air distance between the two cities is approximately 4156 kilometers.

Should I set a price alert for Boston to San Diego flights?

Given that flight deals from Boston to San Diego are historically frequent, setting a price alert could be beneficial. The route is classified as having frequent price fluctuations, meaning opportunities for savings may arise regularly. Over the trailing 30 days, this route has shown consistent deal activity. Travelers can leverage price alerts to be notified when fares drop to a more desirable level.

Flights From Boston

To San Diego

Cheap Flights from Boston to San Diego

Browse current best options from Boston. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Boston

RatePunk searches hundreds of travel sites at once for deals on flights to San Diego

Prices updated 1 day ago

461 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Sep 14, 2026.)

Today’s best flight deals from Boston to San Diego

Explore current cheapest deals departing from Boston to San Diego

2026-11-07 – 2026-11-14
BOS - San Diego
90% AI deal score
$271
$177
Round trip
2026-12-08 – 2026-12-15
BOS - San Diego
92% AI deal score
$319
$178
Round trip
2026-11-10 – 2026-11-18
BOS - San Diego
91% AI deal score
$313
$188
Round trip
2026-10-21 – 2026-10-27
BOS - San Diego
92% AI deal score
$341
$189
Round trip
2026-11-07 – 2026-11-09
BOS - San Diego
87% AI deal score
$284
$205
Round trip
2026-10-29 – 2026-10-31
BOS - San Diego
90% AI deal score
$357
$216
Round trip
2026-11-10 – 2026-11-13
BOS - San Diego
86% AI deal score
$287
$219
Round trip
2026-11-19 – 2026-11-26
BOS - San Diego
84% AI deal score
$281
$230
Round trip
2026-10-24 – 2026-10-27
BOS - San Diego
84% AI deal score
$296
$236
Round trip
2026-12-14 – 2026-12-15
BOS - San Diego
89% AI deal score
$332
$236
Round trip

Boston to San Diego: Overview

Insights for flights from Boston to San Diego

For cheap flights from Boston to San Diego, prices typically range from $282–$740, with a median of $455. Right now, current fares are above the typical level for this route. Travelers can find that 20% of recent fares were classified as a good price, indicating a moderate frequency of competitive offers.

When considering the cheapest time to fly from Boston to San Diego, January stands out with a median fare of $189. Following closely, November offers a median fare of $257, and May presents another attractive option with a median fare of $277. These months generally provide more budget-friendly options for this route.

A typical journey from Boston to San Diego takes approximately 16h 7m, including connections. This is largely due to the nature of the route, as most itineraries connect at least once. Only 30% of recent fares were for direct flights from Boston to San Diego, with connecting itineraries typically involving 2 stopovers.

The route from Boston to San Diego covers a distance of 4156 km, classifying it as a long-haul journey. This extended distance contributes to the overall travel time and often necessitates connecting flights. New deals for this route appear almost daily, making it beneficial to monitor prices regularly.

How much is a round trip from Boston to San Diego

Regular price: $250 - $459

Prices are currently below the regular range.

The regular price range for flights from Boston to San Diego is typically between $250 and $459. The current lowest deal is $236 with Southwest Airlines, for travel from Oct 24-Oct 27.

now $236

Low $250

High $459

The cheapest time to fly from Boston to San Diego

The cheapest month to fly from Boston to San Diego is January, with a median price of $189. The most expensive month is August, with a median price of $498. Prices are generally lower from January to November.

January

Cheapest

Flights from $189

August

Most Expensive

Flights from $498

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Boston to San Diego

Alaska Airlines, Inc.

Last-minute flights going from Boston to San Diego

Fri, Sep 25

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

American Airlines

$421

$343

One-way

Fri, Oct 2

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

United Airlines

$356

$287

One-way

Fri, Oct 2

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

American Airlines

$374

$287

One-way

Sat, Oct 3

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

JetBlue Airways

$250

$247

One-way

Sat, Oct 3

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

JetBlue Airways

$285

$253

One-way

Sat, Oct 3

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

JetBlue Airways

$305

$261

One-way

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

6 nights

Dec 11 - Dec 17

$386 → $278

28%

2 nights

Dec 3 - Dec 5

$394 → $286

27%

4 nights

Mar 17 - Mar 21

$552 → $445

19%

2 nights

Oct 1 - Oct 3

$374 → $275

26%

Popular Airports to fly from Boston to San Diego

Boston - San Diego route insights

💸 Price insights

Recent fares are above the typical level

Recent fares from Boston to San Diego are above the typical level for this route.

📅 Best time to fly

January is historically cheapest at $189

Historically, January is the cheapest month to fly from Boston to San Diego, with a median price of $189.

⏱️ Flight duration

Flights typically take 16h 7m

The median flight duration from Boston to San Diego is 16 hours and 7 minutes.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights make up 70% of routes, with a median of 2 stopovers.

🏆 Airline highlight

Alaska Airlines, Inc. offers direct flights

Alaska Airlines, Inc. has offered 1 direct deal on this route recently.

🎯 Booking tip

Deals appear frequently

Deals for flights from Boston to San Diego appear frequently, with 20% considered good prices.

Boston main airports to depart from

Logan International (BOS)

Cheapest

Boston Logan International Airport (BOS) is a convenient departure point for flights to San Diego.

📍 ~4 km from Boston city center (reachable by car or public transport)

💸 Flights from ~$236

San Diego main airports to arrive at

San Diego International (SAN)

Cheapest

San Diego International Airport is a convenient arrival choice for flights from Boston to San Diego.

📍 ~3 km from city center (reachable by car)

💸 Flights from ~$254

Airports nearby San Diego used as alternative

Tijuana International (TIJ)

Tijuana International (TIJ) is an extremely close alternative for Mexico-bound travelers via CBX, but requires a valid passport and CBX fee.

📍 ~30 km from San Diego (reachable by car)

💸 Flights from ~$517

Business & First Class Flight Deals to San Diego

Discover luxury on the budget with premium cabin class on flights from Boston to San Diego.

Elite

Best Elite deals to San Diego

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From BOS

Elite

Nov 17

San Diego, United States

92% AI deal score

$2,520

$1,306

Save $1,214

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 16

San Diego, United States

92% AI deal score

$2,495

$1,326

Save $1,169

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 13

San Diego, United States

91% AI deal score

$2,135

$1,257

Save $878

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 14

San Diego, United States

91% AI deal score

$2,149

$1,257

Save $892

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 14

San Diego, United States

91% AI deal score

$2,115

$1,257

Save $858

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 14

San Diego, United States

91% AI deal score

$2,379

$1,306

Save $1,073

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 17

San Diego, United States

91% AI deal score

$2,233

$1,306

Save $927

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 18

San Diego, United States

91% AI deal score

$2,234

$1,306

Save $928

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 14

San Diego, United States

91% AI deal score

$2,231

$1,306

Save $925

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 17

San Diego, United States

91% AI deal score

$2,233

$1,313

Save $920

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 14

San Diego, United States

91% AI deal score

$2,231

$1,313

Save $918

Alaska Airlines, Inc.

Business Class

From BOS

Elite

Nov 18

San Diego, United States

91% AI deal score

$2,234

$1,313

Save $921

Alaska Airlines, Inc.

Business Class

Frequently Asked Questions About Flights to San Diego

Historically, the best time to purchase tickets for flights from Boston to San Diego is typically between 28 and 59 days before departure. During this period, the average price for a flight is around $386. Prices tend to be higher for last-minute bookings, with flights purchased 0-6 days out averaging $691, and those 14-27 days out averaging $697. Planning ahead by roughly one to two months can lead to more favorable prices.

A flight from Boston to San Diego is generally considered a good deal if it is priced at or below $282. This threshold represents the lower 25% of prices observed across the trailing quarter. The median price for this route over the same period was $455, while prices in the upper 25% could reach $740 or more. Aiming for prices at or below the good deal threshold can help secure a more economical fare.

Historically, the cheapest months to fly from Boston to San Diego are January, with a median price of $189, and November, with a median price of $257. May also offered competitive prices, with a median of $277. These months typically offer prices significantly lower than the annual median of $455 for this route. Travelers looking for more affordable options may consider planning their trips during these times.

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Flights to San Diego from other cities

Flights from Chicago to San Diego Flights from Colorado Springs to San Diego Flights from Dallas to San Diego Flights from Denver to San Diego Flights from Detroit to San Diego Flights from Dublin to San Diego Flights from El Paso to San Diego Flights from Fresno to San Diego Flights from Hong Kong to San Diego Flights from Honolulu to San Diego Flights from Houston to San Diego Flights from Spokane to San Diego

Boston to San Diego: Overview

Insights for flights from Boston to San Diego

How much is a round trip from Boston to San Diego

Regular price: $250 - $459

Prices are currently below the regular range.

The regular price range for flights from Boston to San Diego is typically between $250 and $459. The current lowest deal is $236 with Southwest Airlines, for travel from Oct 24-Oct 27.

now $236

Low $250

High $459

The cheapest time to fly from Boston to San Diego

January

Cheapest

Flights from $189

August

Most Expensive

Flights from $498

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Boston to San Diego

Alaska Airlines, Inc.

Last-minute flights going from Boston to San Diego

Fri, Sep 25

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

American Airlines

$421

$343

One-way

Fri, Oct 2

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

United Airlines

$356

$287

One-way

Fri, Oct 2

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

American Airlines

$374

$287

One-way

Sat, Oct 3

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

JetBlue Airways

$250

$247

One-way

Sat, Oct 3

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

JetBlue Airways

$285

$253

One-way

Sat, Oct 3

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

JetBlue Airways

$305

$261

One-way

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

6 nights

Dec 11 - Dec 17

$386 → $278

28%

2 nights

Dec 3 - Dec 5

$394 → $286

27%

4 nights

Mar 17 - Mar 21

$552 → $445

19%

2 nights

Oct 1 - Oct 3

$374 → $275

26%

Popular Airports to fly from Boston to San Diego

Boston - San Diego route insights

💸 Price insights

Recent fares are above the typical level

Recent fares from Boston to San Diego are above the typical level for this route.

📅 Best time to fly

January is historically cheapest at $189

Historically, January is the cheapest month to fly from Boston to San Diego, with a median price of $189.

⏱️ Flight duration

Flights typically take 16h 7m

The median flight duration from Boston to San Diego is 16 hours and 7 minutes.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights make up 70% of routes, with a median of 2 stopovers.

🏆 Airline highlight

Alaska Airlines, Inc. offers direct flights

Alaska Airlines, Inc. has offered 1 direct deal on this route recently.

🎯 Booking tip

Deals appear frequently

Deals for flights from Boston to San Diego appear frequently, with 20% considered good prices.

Boston main airports to depart from

Logan International (BOS)

Cheapest

Boston Logan International Airport (BOS) is a convenient departure point for flights to San Diego.

📍 ~4 km from Boston city center (reachable by car or public transport)

💸 Flights from ~$236

San Diego main airports to arrive at

San Diego International (SAN)

Cheapest

San Diego International Airport is a convenient arrival choice for flights from Boston to San Diego.

📍 ~3 km from city center (reachable by car)

💸 Flights from ~$254

Airports nearby San Diego used as alternative

Tijuana International (TIJ)

Tijuana International (TIJ) is an extremely close alternative for Mexico-bound travelers via CBX, but requires a valid passport and CBX fee.

San Diego, United States

91% AI deal score

$2,234

$1,313

Save $921

Alaska Airlines, Inc.

Business Class

Frequently Asked Questions About Flights to San Diego

Cheap Flights from Boston to San Diego

Today’s best flight deals from Boston to San Diego

Boston to San Diego: Overview

Insights for flights from Boston to San Diego

How much is a round trip from Boston to San Diego

The cheapest time to fly from Boston to San Diego

Direct flights from Boston to San Diego

Last-minute flights going from Boston to San Diego

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

Popular Airports to fly from Boston to San Diego

Boston - San Diego route insights

Recent fares are above the typical level

January is historically cheapest at $189

Flights typically take 16h 7m

Connecting flights are dominant

Alaska Airlines, Inc. offers direct flights

Deals appear frequently

Boston 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

Nov 17

Nov 16

Nov 13

Nov 14

Nov 14

Nov 14

Nov 17

Nov 18

Nov 14

Nov 17

Nov 14

Nov 18

Frequently Asked Questions About Flights to San Diego

When should I buy Boston to San Diego tickets?

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

Which months have the cheapest flights from Boston to San Diego?

Are there direct flights from Boston to San Diego?

How long does it take to fly from Boston to San Diego?

Should I set a price alert for Boston to San Diego flights?

Related routes

More routes from Boston

Flights to San Diego from other cities

Boston to San Diego: Overview

Insights for flights from Boston to San Diego

How much is a round trip from Boston to San Diego

The cheapest time to fly from Boston to San Diego

Direct flights from Boston to San Diego

Last-minute flights going from Boston to San Diego

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

Popular Airports to fly from Boston to San Diego

Boston - San Diego route insights

Recent fares are above the typical level

January is historically cheapest at $189

Flights typically take 16h 7m

Connecting flights are dominant

Alaska Airlines, Inc. offers direct flights

Deals appear frequently

Boston 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

Nov 17

Nov 16

Nov 13

Nov 14

Nov 14

Nov 14

Nov 17

Nov 18

Nov 14

Nov 17

Nov 14

Nov 18

Frequently Asked Questions About Flights to San Diego

When should I buy Boston to San Diego tickets?

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

Which months have the cheapest flights from Boston to San Diego?