Are there direct flights from Boston to San Diego?

Across the trailing quarter, approximately 30% of flights from Boston to San Diego were direct. For travelers opting for connecting flights, the median number of stopovers was 2. While direct options are available, a significant portion of the flights on this route involve at least one stop. This indicates that direct flights are not the majority for this route.

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

The typical direct flight from Boston to San Diego has a duration of 6 hours and 17 minutes. This corresponds to a median flight time of 377 minutes. For flights with one stop, the median duration increases to 10 hours and 1 minute, or 601 minutes. The distance covered on this route is approximately 4156 kilometers.

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

Based on historical trends over the trailing 30 days, deals for flights from Boston to San Diego are frequent. This suggests that prices for this route can fluctuate, and good opportunities may arise regularly. Setting a price alert can be a beneficial strategy to capture these frequent deals as they become available. Travelers often find value in monitoring prices for routes with frequent deal activity.

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 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

Today’s best flight deals from Boston to San Diego

Explore current cheapest deals departing from Boston to San Diego

2026-09-28 – 2026-09-30
BOS - San Diego
91% AI deal score
$382
$216
Round trip
2026-10-21 – 2026-10-26
BOS - San Diego
91% AI deal score
$367
$216
Round trip
2026-10-08 – 2026-10-13
BOS - San Diego
90% AI deal score
$360
$231
Round trip
2026-08-26 – 2026-08-31
BOS - San Diego
93% AI deal score
$462
$237
Round trip
2026-08-19 – 2026-08-24
BOS - San Diego
93% AI deal score
$473
$237
Round trip
2026-08-18 – 2026-08-24
BOS - San Diego
93% AI deal score
$459
$237
Round trip
2026-09-15 – 2026-09-21
BOS - San Diego
88% AI deal score
$314
$237
Round trip
2026-09-02 – 2026-09-06
BOS - San Diego
87% AI deal score
$315
$237
Round trip
2026-09-17 – 2026-09-21
BOS - San Diego
88% AI deal score
$325
$237
Round trip
2026-09-16 – 2026-09-21
BOS - San Diego
88% AI deal score
$322
$237
Round trip

Boston to San Diego: Overview

Insights for flights from Boston to San Diego

For flights from Boston to San Diego, prices typically range from $282 to $740, with a median of $455. Right now, fares are above the typical level, and approximately 20% of recent fares were classified as a good price. New deals appear almost daily, offering frequent opportunities for travelers seeking cheap flights from Boston to San Diego.

When is the cheapest time to fly from Boston to San Diego? The data indicates that January is typically the most affordable month, with a median fare of $189. Following closely, November also presents a good value, with a median fare of $257. May is another favorable month, showing a median fare of $277.

A typical journey from Boston to San Diego takes approximately 16h 7m, including connections. Most itineraries connect at least once, with the median number of stopovers for connecting flights being 2.

The route from Boston to San Diego covers a distance of 4156 kilometers. This classifies it as a long-haul journey, indicating a significant distance between the two cities.

How much is a round trip from Boston to San Diego

Regular price: $270 - $848

Prices are currently below the regular range.

Regular prices for flights from Boston to San Diego typically range from $270 to $848. The current lowest deal is $236 with Alaska Airlines, Inc. for travel from Sep 21-Sep 24.

now $236

Low $270

High $848

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

Southwest Airlines

Last-minute flights going from Boston to San Diego

Sun, Jul 26

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

Alaska Airlines, Inc.

$1,156

$582

One-way

Tue, Jul 28

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

Alaska Airlines, Inc.

$1,147

$444

One-way

Wed, Aug 12

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

American Airlines

$471

$276

One-way

Wed, Aug 12

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

Southwest Airlines

$582

$306

One-way

Thu, Aug 13

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

American Airlines

$546

$313

One-way

Fri, Aug 14

⌛ Last-Minute

BOS - San Diego

Boston (BOS) - San Diego (SAN)

United Airlines

$571

$281

One-way

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

2 nights

Jul 28 - Jul 30

$1,147 → $444

61%

1 night

Jul 26 - Jul 27

$1,156 → $582

50%

3 nights

Aug 21 - Aug 24

$555 → $262

53%

2 nights

Aug 25 - Aug 27

$559 → $267

52%

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 at $236.

📅 Best time to fly

January is historically cheapest at $189

Historically, January is the cheapest month to fly from Boston to San Diego at $189.

⏱️ Flight duration

Median flight time is 16h 7m

The median flight time 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

Southwest Airlines offers direct flights

Southwest Airlines offers direct flights from Boston to San Diego.

🎯 Booking tip

Deals are frequent on this route

Deals on flights from Boston to San Diego are frequent, appearing within 30 days.

Boston main airports to depart from

Logan International (BOS)

Cheapest

Logan International Airport is a convenient departure point for flights to San Diego.

📍 ~5 km from Boston city center (reachable by car or public transport)

💸 Flights from ~$229

San Diego main airports to arrive at

San Diego International (SAN)

Cheapest

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

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

💸 Flights from ~$252

Airports nearby San Diego used as alternative

Tijuana International (TIJ)

Tijuana International (TIJ) is an extremely close alternative, especially for Mexico-bound travelers via CBX.

📍 ~29 km from San Diego (reachable by car)

💸 Flights from ~$494

Business & First Class Flight Deals to San Diego

92% AI deal score

$1,583

$900

Save $683

Frequently Asked Questions About Flights to San Diego

Historically, the best prices for flights from Boston to San Diego are found when booking 28-59 days in advance. During this period, the average price was $386. Booking within 0-6 days of departure typically saw prices around $691, while flights booked 14-27 days out averaged $697. Planning ahead by at least 28 days can lead to significant savings on this route.

Across the trailing quarter, a flight from Boston to San Diego was considered a good deal if it was priced at or below $282. The median price for this route over the same period was $455. Prices typically began to increase significantly above $740, indicating less favorable deals. Aiming for prices below the $282 threshold can help secure a good value.

Historically, January has offered the cheapest flights from Boston to San Diego, with a median price of $189. November also presented favorable prices, with a median of $257. May, while listed as a cheapest month example, had a median price of $277, which was also the most expensive month on average across the trailing 270 days. The annual median price for this route was $455.

Related routes

More routes from Boston

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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

The route from Boston to San Diego covers a distance of 4156 kilometers. This classifies it as a long-haul journey, indicating a significant distance between the two cities.

How much is a round trip from Boston to San Diego

Regular price: $270 - $848

Prices are currently below the regular range.

Regular prices for flights from Boston to San Diego typically range from $270 to $848. The current lowest deal is $236 with Alaska Airlines, Inc. for travel from Sep 21-Sep 24.

now $236

Low $270

High $848

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