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Cheap flights from San Diego to Boston from £87

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 25/2. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BOS
3 Mar — 10 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Diego to Boston

Enter your travel dates to find the best prices.

Cheapest flights from San Diego to Boston
Explore the most affordable flight options available from San Diego to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 February 2026.

Tue 17/308:50
SAN
-
BOS
Nonstop5h 34m
Alaska Airlines
Mon 30/317:40
BOS
-
SAN
Nonstop6h 41m
Alaska Airlines
Deal found 30/1£173
Wed 1/422:03
SAN
-
BOS
Nonstop5h 22m
Delta
Tue 7/417:30
BOS
-
SAN
Nonstop6h 37m
Delta
Deal found 30/1£177
Thu 19/322:03
SAN
-
BOS
Nonstop5h 22m
Delta
Mon 23/317:30
BOS
-
SAN
Nonstop6h 37m
Delta
Deal found 30/1£180
Wed 18/310:48
SAN
-
BOS
1 stop10h 11m
Alaska Airlines
Tue 31/317:40
BOS
-
SAN
Nonstop6h 41m
Alaska Airlines
Deal found 30/1£184
Wed 18/318:02
SAN
-
BOS
1 stop8h 51m
Alaska Airlines
Mon 30/317:40
BOS
-
SAN
Nonstop6h 41m
Alaska Airlines
Deal found 30/1£191
Wed 18/218:55
SAN
-
BOS
1 stop7h 57m
United Airlines
Sun 22/205:30
BOS
-
SAN
1 stop9h 21m
United Airlines
Deal found 30/1£195
Fri 20/322:03
SAN
-
BOS
Nonstop5h 22m
Delta
Tue 31/317:30
BOS
-
SAN
Nonstop6h 37m
Delta
Deal found 30/1£199
Thu 12/311:30
SAN
-
BOS
1 stop9h 35m
Southwest
Sat 14/308:00
BOS
-
SAN
1 stop14h 45m
Southwest
Deal found 30/1£199
Tue 2/621:19
SAN
-
BOS
Nonstop5h 39m
JetBlue
Tue 9/616:50
BOS
-
SAN
Nonstop6h 18m
JetBlue
Deal found 30/1£202
Wed 25/219:55
SAN
-
BOS
2 stops9h 25m
Southwest
Tue 3/315:20
BOS
-
SAN
2 stops10h 00m
Southwest
Deal found 30/1£203
Fri 27/221:55
SAN
-
BOS
Nonstop5h 30m
Delta
Mon 2/317:45
BOS
-
SAN
1 stop8h 19m
Delta
Deal found 29/1£204

Find flight deals from San Diego to Boston

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Boston (BOS). 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 1 February 2026.

Round-trip from

£173

One-way from

£87

Popular in

December

Cheapest in

January

Average price

£250
Alaska Airlines
  • Alaska Airlines
  • 17/3-30/3
  • Nonstop
  • 12h 15m total
  • San Diego to Boston
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 25/2
  • Nonstop
  • 5h 34m total
  • San Diego to Boston
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£12 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Diego to Boston 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 858,174 searches. Data last updated 1 February 2026.
Use the filters below to find and compare flights from San Diego to Boston that are best for you.

Fly from

San Diego

Fly to

Boston

Route

Depart

Return

Price

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Wed 18/3

22:03-06:25

Nonstop5h 22m

Boston Logan Intl

Sun 22/3

17:30-21:07

Nonstop6h 37m

£173

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Thu 19/3

22:03-06:25

Nonstop5h 22m

Boston Logan Intl

Wed 1/4

17:30-21:07

Nonstop6h 37m

£173

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Thu 19/3

22:03-06:25

Nonstop5h 22m

Boston Logan Intl

Tue 31/3

17:30-21:07

Nonstop6h 37m

£173

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Wed 4/3

06:15-23:59

1 stop14h 44m

Boston Logan Intl

Sat 7/3

17:44-21:29

Nonstop6h 45m

£188

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Tue 5/5

21:59-06:30

Nonstop5h 31m

Boston Logan Intl

Tue 12/5

17:15-20:36

Nonstop6h 21m

£188

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Wed 25/2

10:05-20:50

1 stop7h 45m

Boston Logan Intl

Tue 3/3

15:20-22:20

2 stops10h 00m

£191

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Thu 19/2

07:00-17:26

1 stop7h 26m

Boston Logan Intl

Mon 23/2

16:25-22:44

1 stop9h 19m

£195

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Wed 18/2

12:55-23:44

1 stop7h 49m

Boston Logan Intl

Sun 22/2

05:30-11:51

1 stop9h 21m

£195

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Mon 16/2

21:55-06:25

Nonstop5h 30m

Boston Logan Intl

Fri 20/2

17:05-20:45

Nonstop6h 40m

£195

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Tue 5/5

22:20-09:11

1 stop7h 51m

Boston Logan Intl

Tue 12/5

15:43-21:25

1 stop8h 42m

£202

Flights are sorted by cheapest return flights first.

Deals found on 31/1

Showing 1-10 of 22 results
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Best time to book a flight from San Diego to Boston

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

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

Use this chart to determine the optimal time to book a return flight from San Diego to Boston. Price data was last updated on 30 January 2026.

To ensure you get the cheapest price possible for a flight from San Diego to Boston, you should look to book at least 67 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 San Diego to Boston?

Currently, April is the cheapest month in which you can book a flight from San Diego to Boston (average of £86). Flying from San Diego to Boston in June is currently the most expensive (average of £137). 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 SAN to BOS?

Find hourly flight availability from San Diego to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 February 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 75% on flights from San Diego to Boston by exploring options for tickets in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Flights from San Diego to Boston Logan Intl have been viewed 1 times in the past calendar month.

  • How long is the flight from San Diego to Boston?

    Airlines like Delta and Alaska Airlines fly from San Diego to Boston in about 5h 22m. The time it takes to get you to your destination can typically vary by up to 9h 22m. The distance from San Diego to Boston is about 2581 mi. 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 San Diego to Boston?

    The top 3 most reliable airlines when flying from San Diego to Boston are Aer Lingus (95%), JetBlue (84%) and Delta (84%).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Diego to Boston 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 San Diego to Boston?

    Currently, April is the cheapest month in which you can book a flight from San Diego to Boston (average of £86). Flying from San Diego to Boston in June is currently the most expensive (average of £137). 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

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Burlington
Canton
Warwick
Cambridge
Peabody
Somerville
Quincy
Waltham
Chelmsford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Diego to Boston

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to Boston flights
Los Angeles to Boston flights

Fly with Cheapflights

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How does Cheapflights help users find flights from San Diego to Boston?

Cheapflights makes it easy to find San Diego to Boston flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from San Diego to Boston for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes! Cheapflights helps users easily find flights from San Diego to Boston with no change fees.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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