How often are flights from Boston to San Diego delayed?

About 19% of weekly flights between Boston and San Diego have experienced delays in the past year, with the average delay time being 159 minutes.

Which airline has the best punctuality record on Boston to San Diego flights?

Over the past year, JetBlue has had the lowest number of delays on this route, with just 15% of flights being delayed.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

What is the most punctual flight time for Boston to San Diego flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

How popular is this Boston to San Diego flight route?

The Boston Logan Intl to San Diego flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How long is the flight from Boston to San Diego?

There are many flights that can get you from Boston to San Diego in 6h 33m. Fly via Southwest, Delta, or Alaska Airlines to get the fastest option. Boston and San Diego are separated by a distance of 4154 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

Weekly flight availability from Boston to San Diego

The most flights from BOS to SAN are scheduled on a Monday (13 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (5 on average).

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 58.0 mm per month. February is typically the wettest month, when rainfall can reach 58.0 mm. July is typically the driest time to visit San Diego when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

What are the most reliable airlines from Boston to San Diego?

No one likes to see their flight delayed. When booking a flight from Boston to San Diego consider choosing TAP AIR PORTUGAL (92%), Icelandair (82%) or JetBlue (76%) as they are the most reliable in getting you off to your destination on time.

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

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

How can I find direct flights from Boston to San Diego?

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

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

Yes. Cheapflights offers flight deals from Boston 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.

C$ 166+ Cheap Flights from Boston to San Diego

Cheap flight deals from Boston to San Diego

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Boston to San Diego
Explore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 November 2026.

Thu 3/125:10 p.m. -

Nonstop6h 33m

Wed 9/1210:13 p.m. -

Nonstop5h 26m

Deal found 4/11C$ 303

Tue 1/128:25 a.m. -

Nonstop6h 20m

Tue 8/1211:25 a.m. -

Nonstop5h 25m

Deal found 3/11C$ 317

Thu 3/122:45 p.m. -

1 stop8h 34m

Wed 9/1210:35 a.m. -

1 stop10h 42m

Deal found 3/11C$ 318

Sat 12/126:00 a.m. -

Nonstop6h 30m

Thu 17/1210:35 a.m. -

1 stop10h 52m

Deal found 3/11C$ 323

Wed 16/126:13 p.m. -

Nonstop6h 42m

Wed 30/128:46 p.m. -

Nonstop5h 42m

Deal found 4/11C$ 324

Thu 3/1212:50 p.m. -

1 stop8h 25m

Thu 10/1211:25 a.m. -

Nonstop5h 25m

Deal found 4/11C$ 331

Tue 1/128:25 a.m. -

Nonstop6h 20m

Fri 4/126:30 a.m. -

2 stops12h 15m

Deal found 2/11C$ 332

Thu 10/126:50 a.m. -

Nonstop6h 34m

Thu 17/1210:35 a.m. -

1 stop10h 52m

Deal found 4/11C$ 334

Mon 23/115:35 a.m. -

1 stop10h 45m

Wed 2/1210:55 a.m. -

2 stops9h 50m

Deal found 1/11C$ 338

Mon 14/126:50 a.m. -

Nonstop6h 34m

Thu 17/1210:35 a.m. -

1 stop10h 52m

Deal found 4/11C$ 341

Sun 6/124:05 p.m. -

Nonstop6h 28m

Tue 15/1210:35 a.m. -

1 stop10h 42m

Deal found 3/11C$ 344

Tue 10/118:25 a.m. -

Nonstop6h 20m

Tue 17/1111:25 a.m. -

Nonstop5h 25m

Deal found 3/11C$ 345

Find flight deals from Boston to San Diego

Round-trip from	C$ 292
One-way from	C$ 166
Popular in	December
Cheapest in	January
Average price	C$ 512
Good round-trip deal	C$ 473 or less

JetBlue
3/2-9/2
1 total stop
16h 22m total
Boston to San Diego

Search Deals

Delta
4/2-31/12
Nonstop
6h 36m total
Boston to San Diego

Search Deals

Highest demand for flights based on searches. 1% potential increase in price (C$ 11 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in November 2026

Search Deals

Price to beat on a round-trip flight from Boston Logan Intl to San Diego.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSan Diego

BOS Boston Logan Intl - SAN San Diego

BOSSAN

Boston Logan Intl

Fri 1/1

7:40 a.m.-11:17 a.m.

Nonstop6h 37m

San Diego

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 235

BostonSan Diego

BOS Boston Logan Intl - SAN San Diego

BOSSAN

Boston Logan Intl

Sun 24/1

5:05 p.m.-8:41 p.m.

Nonstop6h 36m

San Diego

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 242

BostonSan Diego

BOS Boston Logan Intl - SAN San Diego

BOSSAN

Boston Logan Intl

Fri 15/1

12:50 p.m.-8:45 p.m.

2 stops10h 55m

San Diego

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 256

BostonSan Diego

BOS Boston Logan Intl - SAN San Diego

BOSSAN

Boston Logan Intl

Mon 16/11

3:30 p.m.-11:10 p.m.

2 stops10h 40m

San Diego

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 257

BostonSan Diego

BOS Boston Logan Intl - SAN San Diego

BOSSAN

Boston Logan Intl

Wed 10/3

8:10 a.m.-6:45 p.m.

2 stops13h 35m

San Diego

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 257

BostonSan Diego

BOS Boston Logan Intl - SAN San Diego

BOSSAN

Boston Logan Intl

Tue 12/1

7:15 a.m.-5:16 p.m.

2 stops13h 01m

San Diego

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 278

BostonSan Diego

BOS Boston Logan Intl - SAN San Diego

BOSSAN

Boston Logan Intl

Sun 6/12

5:45 a.m.-5:15 p.m.

2 stops14h 30m

San Diego

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 278

BostonSan Diego

BOS Boston Logan Intl - SAN San Diego

BOSSAN

Boston Logan Intl

Tue 17/11

5:30 a.m.-3:12 p.m.

2 stops12h 42m

San Diego

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 292

Quickest round-trip

BostonSan Diego

BOS Boston Logan Intl - SAN San Diego

BOSSAN

Boston Logan Intl

Thu 17/12

8:15 a.m.-11:40 a.m.

Nonstop6h 25m

San Diego

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 292

BostonSan Diego

BOS Boston Logan Intl - SAN San Diego

BOSSAN

Boston Logan Intl

Thu 12/11

11:45 a.m.-8:35 p.m.

2 stops11h 50m

San Diego

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 313

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 23 resultsSorted by cheapest first

Best time to book a flight from Boston to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Boston with our price prediction graph.

BOS-SAN

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 Boston to San Diego

Prices

Airlines

Delays

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

The best time to book flights from Boston to San Diego is 33 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Boston to San Diego (average of C$ 433). Flying from Boston to San Diego in December is currently the most expensive (average of C$ 683). 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 BOS to SAN?

When flying from Boston to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Boston to San Diego?

Airfare is below average for this route at the moment.

Boston to San Diego flights typically cost between C$ 360 and C$ 721 in February.
The cheapest round-trip price found within the last 5 days was C$ 292 on JetBlue (3 Feb-9 Feb).

Related info for your journey

How popular is this Boston to San Diego flight route?
The Boston Logan Intl to San Diego flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from Boston to San Diego?
There are many flights that can get you from Boston to San Diego in 6h 33m. Fly via Southwest, Delta, or Alaska Airlines to get the fastest option. Boston and San Diego are separated by a distance of 4154 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most reliable airlines from Boston to San Diego?
No one likes to see their flight delayed. When booking a flight from Boston to San Diego consider choosing TAP AIR PORTUGAL (92%), Icelandair (82%) or JetBlue (76%) as they are the most reliable in getting you off to your destination on time.
Can I find deals for flights from Boston to San Diego that include hotel bookings?
Yes. In addition to deals on Boston to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Boston to San Diego?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to San Diego.
Can I find deals for business class flights from Boston to San Diego?
Yes. Cheapflights offers flight deals from Boston 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 Boston to San Diego?
Currently, January is the cheapest month in which you can book a flight from Boston to San Diego (average of C$ 433). Flying from Boston to San Diego in December is currently the most expensive (average of C$ 683). 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.

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Boston to San Diego. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Boston to San Diego?

Cheapflights simply makes it quick and affordable to book flights from Boston to San Diego by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Boston to San Diego with no change fees?

Yes, we can. To see specific flights from Boston to San Diego with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Boston to San Diego become cheaper?

Of course! You can now track prices for flights from Boston to San Diego and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Boston to San Diego from C$ 166

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Boston to San Diego

Cheapest flights from Boston to San DiegoExplore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 November 2026.

Explore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 November 2026.

Best flights from Boston to San DiegoDiscover carefully curated flight deals from Boston to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 4 November 2026.

Discover carefully curated flight deals from Boston to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 4 November 2026.

Direct flights from Boston to San DiegoExplore direct flight options from Boston to San Diego based on user searches, and compare prices and availability for your desired travel dates. Data last updated 4 November 2026.

Explore direct flight options from Boston to San Diego based on user searches, and compare prices and availability for your desired travel dates. Data last updated 4 November 2026.

Last-minute flights from Boston to San DiegoDiscover last-minute flight deals from Boston to San Diego. Data last updated 4 November 2026 and is based on user searches.

Discover last-minute flight deals from Boston to San Diego. Data last updated 4 November 2026 and is based on user searches.

One-way flights from Boston to San DiegoSearch for one-way flight options from Boston to San Diego. Find affordable one-way fares based on user searches. Data last updated 4 November 2026.

Search for one-way flight options from Boston to San Diego. Find affordable one-way fares based on user searches. Data last updated 4 November 2026.

Find flight deals from Boston to San Diego

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Use the filters below to find and compare flights from Boston to San Diego that are best for you.

Best time to book a flight from Boston to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Boston with our price prediction graph.

Cheapflights Insights

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

The best time to book flights from Boston to San Diego is 33 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

What is the cheapest time of day to fly from BOS to SAN?

When flying from Boston to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Boston to San Diego?

Airfare is below average for this route at the moment.

Boston to San Diego flights typically cost between C$ 360 and C$ 721 in February.The cheapest round-trip price found within the last 5 days was C$ 292 on JetBlue (3 Feb-9 Feb).

Weekly flight availability from Boston to San Diego

The most flights from BOS to SAN are scheduled on a Monday (13 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (5 on average).

How often are flights from Boston to San Diego delayed?

About 19% of weekly flights between Boston and San Diego have experienced delays in the past year, with the average delay time being 159 minutes.

What is the most punctual flight time for Boston to San Diego flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Boston to San Diego flights?

Over the past year, JetBlue has had the lowest number of delays on this route, with just 15% of flights being delayed.

Related info for your journey

How popular is this Boston to San Diego flight route?

How long is the flight from Boston to San Diego?

What are the most reliable airlines from Boston to San Diego?

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

How can I find direct flights from Boston to San Diego?

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

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

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Boston and San Diego flights

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Can Cheapflights find flights from Boston to San Diego with no change fees?

Can Cheapflights notify me if prices for flights from Boston to San Diego become cheaper?

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Cheapest flights from Boston to San Diego
Explore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 November 2026.

Best flights from Boston to San Diego
Discover carefully curated flight deals from Boston to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 4 November 2026.

Direct flights from Boston to San Diego
Explore direct flight options from Boston to San Diego based on user searches, and compare prices and availability for your desired travel dates. Data last updated 4 November 2026.

Last-minute flights from Boston to San Diego
Discover last-minute flight deals from Boston to San Diego. Data last updated 4 November 2026 and is based on user searches.

One-way flights from Boston to San Diego
Search for one-way flight options from Boston to San Diego. Find affordable one-way fares based on user searches. Data last updated 4 November 2026.

Boston to San Diego flights typically cost between C$ 360 and C$ 721 in February.
The cheapest round-trip price found within the last 5 days was C$ 292 on JetBlue (3 Feb-9 Feb).