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Cheap flights from San Diego to Boston from £109

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 24/7. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BOS
21 Jun — 28 Jun1
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 22 May 2026.

Tue 2/622:40
SAN
-
BOS
1 stop7h 49m
United Airlines
Fri 5/618:26
BOS
-
SAN
1 stop8h 28m
United Airlines
Deal found 19/5£191
Wed 8/713:06
SAN
-
BOS
Nonstop5h 45m
JetBlue
Wed 15/706:05
BOS
-
SAN
Nonstop6h 04m
JetBlue
Deal found 21/5£199
Tue 7/714:35
SAN
-
BOS
Nonstop5h 30m
Southwest
Wed 15/705:25
BOS
-
SAN
1 stop8h 45m
Southwest
Deal found 21/5£203
Tue 7/714:35
SAN
-
BOS
Nonstop5h 30m
Southwest
Tue 14/705:50
BOS
-
SAN
1 stop7h 20m
Southwest
Deal found 17/5£206
Mon 8/620:44
SAN
-
BOS
Nonstop5h 37m
JetBlue
Tue 16/606:05
BOS
-
SAN
Nonstop6h 05m
JetBlue
Deal found 18/5£209
Thu 9/720:40
SAN
-
BOS
Nonstop5h 39m
JetBlue
Tue 14/706:05
BOS
-
SAN
Nonstop6h 04m
JetBlue
Deal found 20/5£210
Fri 21/814:15
SAN
-
BOS
1 stop7h 59m
United Airlines
Tue 1/907:45
BOS
-
SAN
1 stop7h 56m
United Airlines
Deal found 18/5£211
Thu 11/622:40
SAN
-
BOS
1 stop7h 49m
United Airlines
Tue 16/617:05
BOS
-
SAN
1 stop8h 34m
United Airlines
Deal found 21/5£214
Thu 17/914:15
SAN
-
BOS
1 stop7h 59m
United Airlines
Sun 20/905:45
BOS
-
SAN
1 stop8h 32m
United Airlines
Deal found 18/5£215
Tue 9/621:54
SAN
-
BOS
Nonstop5h 36m
Delta
Thu 11/617:10
BOS
-
SAN
Nonstop6h 16m
Delta
Deal found 21/5£217

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 22 May 2026.

Round-trip from

£191

One-way from

£109

Popular in

December

Cheapest in

January

Average price

£277
United Airlines
  • United Airlines
  • 2/6-5/6
  • 2 total stops
  • 16h 17m total
  • San Diego to Boston
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 24/7
  • Nonstop
  • 5h 48m total
  • San Diego to Boston
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£7 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 May 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 22 May 2026.
Use the filters below to find and compare flights from San Diego to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Wed 8/7

13:06-21:51

Nonstop5h 45m

Boston Logan Intl

Wed 15/7

06:05-09:09

Nonstop6h 04m

£199
Fastest return journey

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Tue 7/7

14:35-23:05

Nonstop5h 30m

Boston Logan Intl

Tue 14/7

16:25-19:35

Nonstop6h 10m

£225

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Wed 8/7

22:40-12:40

1 stop11h 00m

Boston Logan Intl

Wed 15/7

05:25-11:10

1 stop8h 45m

£235

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Wed 22/7

21:53-06:30

Nonstop5h 37m

Boston Logan Intl

Fri 31/7

17:10-20:25

Nonstop6h 15m

£247

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Thu 3/9

21:30-06:00

Nonstop5h 30m

Boston Logan Intl

Wed 9/9

15:20-22:35

1 stop10h 15m

£253

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Tue 7/7

21:40-09:50

1 stop9h 10m

Boston Logan Intl

Wed 15/7

05:25-14:15

2 stops11h 50m

£261

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Mon 8/6

14:35-23:05

Nonstop5h 30m

Boston Logan Intl

Wed 10/6

16:45-21:55

1 stop8h 10m

£262

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Thu 24/9

22:00-06:41

Nonstop5h 41m

Boston Logan Intl

Sun 27/9

17:15-20:41

Nonstop6h 26m

£264

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Tue 7/7

21:40-08:00

1 stop7h 20m

Boston Logan Intl

Mon 13/7

15:55-23:20

1 stop10h 25m

£266

San DiegoBoston

SAN - BOS

SANBOS

San Diego

Tue 1/9

14:15-01:14

1 stop7h 59m

Boston Logan Intl

Wed 2/9

09:00-20:45

2 stops14h 45m

£267

Flights are sorted by cheapest return flights first.

Deals found on 21/5

Showing 1-10 of 22 resultsSorted by cheapest first
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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?

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, January is the cheapest month in which you can book a flight from San Diego to Boston (average of £229). Flying from San Diego to Boston in December is currently the most expensive (average of £333). 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 22 May 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.

How much does it cost for a return flight from San Diego to Boston?

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 JetBlue, Southwest, and Delta fly from San Diego to Boston in about 5h 30m. The time it takes to get you to your destination is usually consistent. The distance from San Diego to Boston is about 2581 mi. Most flights are nonstop.

  • 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 EL AL (96%), Aer Lingus (83%) and Icelandair (81%).

  • 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, January is the cheapest month in which you can book a flight from San Diego to Boston (average of £229). Flying from San Diego to Boston in December is currently the most expensive (average of £333). 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
Waltham
Warwick
Cambridge
Peabody
Somerville
Quincy
Chelmsford

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Alternative routes for San Diego to Boston

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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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