How does KAYAK find such low prices on flights from California to Boston?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from California to Boston. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Boston?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from California is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from California to Boston?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to California with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to Boston?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$133 CHEAP FLIGHTS from California to Boston

BOS

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals

Cheap Flights from California to Boston

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from California to Boston

Wed, May 27 - Mon, Jun 1

8:44 pm - 5:23 am

SAN

BOS

5h 39mnonstop

6:37 am - 9:52 am

BOS

SAN

6h 15mnonstop

$262JetBlue

Fri, Aug 7 - Sat, Aug 15

9:42 pm - 10:09 am

LAS

BOS

9h 27m

1 stop

12:04 pm - 8:36 pm

BOS

LAS

11h 32m

1 stop

$264Frontier

Mon, Aug 3 - Mon, Aug 24

7:11 pm - 6:30 am

SJC

BOS

8h 19m

1 stop

5:51 am - 12:27 pm

BOS

SJC

9h 36m

1 stop

$265Delta

Tue, Jun 2 - Mon, Jun 8

8:54 pm - 5:44 am

SAN

BOS

5h 50mnonstop

6:40 pm - 10:09 pm

BOS

SAN

6h 29mnonstop

$267Alaska Airlines

Mon, May 18 - Sat, May 23

10:43 pm - 7:24 am

LAX

BOS

5h 41mnonstop

6:26 pm - 9:51 pm

BOS

LAX

6h 25mnonstop

$268United Airlines

Wed, Aug 12 - Sat, Aug 15

8:50 pm - 5:00 am

LAS

BOS

5h 10mnonstop

12:04 pm - 8:36 pm

BOS

LAS

11h 32m

1 stop

$268Multiple Airlines

Tue, May 19 - Sat, May 23

3:28 pm - 8:44 am

LAX

BOS

14h 16m

1 stop

3:55 pm - 7:18 pm

BOS

LAX

6h 23mnonstop

$269Multiple Airlines

Mon, Aug 10 - Wed, Aug 26

6:37 pm - 5:58 am

SJC

BOS

8h 21m

1 stop

9:34 am - 5:30 pm

BOS

SJC

10h 56m

2 stops

$270United Airlines

Fri, Jul 3 - Tue, Aug 18

8:52 pm - 5:40 am

SAN

BOS

5h 48mnonstop

8:28 am - 11:43 am

BOS

SAN

6h 15mnonstop

$276Alaska Airlines

Thu, May 28 - Mon, Jun 1

10:00 pm - 6:09 am

LAS

BOS

5h 09mnonstop

7:50 pm - 10:39 pm

BOS

LAS

5h 49mnonstop

$277Delta

Useful Info

Low season	January
High season	July
Cheapest flight	$133

Best time to beat the crowds with an average 14% drop in price.

Most popular time to fly and prices are also 2% lower on average.

Flight from Ontario to Boston

alyciaFlew with American Airlines

LAX

BOS

Mar 2026

Switching terminals in Boston was a VERY long walk -- dont cut your connection close if you are going from B to E

NicoleFlew with JetBlue

LAX

BOS

Apr 2026

Bring your own snacks/food. Extra legroom is nice but not really worth the extra money, unless you want free alcohol.

ericFlew with Air New Zealand

SFO

BOS

Jan 2025

At least two hour connection Buy food pre-flight

How does KAYAK find such low prices on flights from California to Boston?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from California to Boston.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Boston?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from California is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from California to Boston?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to California with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to Boston?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Hampton Beach

Hampton

Warwick

Waltham

Wells

Everett

Plymouth

Middletown

Gloucester

Concord

Woburn

Brookline

Revere

York Beach

Burlington

Danvers

West Yarmouth

South Portland

Braintree

Somerville

Everything you need to know for your flight to Boston

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Boston

Boston (BOS)

BOS

$131 Find Cheap Flights from California to Boston

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

Cheap Flights from California to Boston

Recent round-trip flight deals from California to Boston

Recent one-way flight deals from California to Boston

Recent last minute flight deals from California to Boston

Recent direct flight deals from California to Boston

Good to know

Flights from California to Boston: the best tips from KAYAK users

FAQs for booking flights from California to Boston

How does KAYAK find such low prices on flights from California to Boston?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from California to Boston.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Boston?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from California is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from California to Boston?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to California with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to Boston?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Boston?

Everything you need to know for your flight to Boston

Information on the airport you'll fly into in Boston

Cabin class types available on flights to California

Complete your trip to Boston with a hotel stay or car rental

Find direct flights for Boston

Flights to other popular destinations

Flights from domestic origins to Boston

Choose which airport to fly into in Boston

Find deals for your return flight