BOS

$124 Find Cheap Flights from California to Boston - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Boston departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from California to Boston

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from California to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from California to Boston

Fri, Sep 11 - Wed, Sep 16
Frontier Logo
10:15 pm - 10:51 amLAS  Las Vegas Harry Reid Intl-BOS Boston Logan Intl
9h 36m1 stop Orlando
Frontier Logo
12:54 pm - 11:44 pmBOS  Boston Logan Intl-LAS Las Vegas Harry Reid Intl
13h 50m2 stops Atlanta Hartsfield-Jackson Denver Intl
$251Frontier
Wed, Sep 9 - Wed, Sep 23
United Airlines Logo
2:15 pm - 1:10 amSAN  San Diego-BOS Boston Logan Intl
7h 55m1 stop Chicago O'Hare Intl
United Airlines Logo
3:45 pm - 9:24 pmBOS  Boston Logan Intl-SAN San Diego
8h 39m1 stop Houston George Bush Intcntl
$252United Airlines
Wed, Oct 21 - Wed, Oct 28
Southwest Logo
9:20 am - 5:50 pmSAN  San Diego-BOS Boston Logan Intl
5h 30mnonstop
Southwest Logo
10:55 am - 6:50 pmBOS  Boston Logan Intl-SAN San Diego
10h 55m2 stops Chicago Midway Tucson
$252Southwest
Sat, Sep 5 - Sat, Sep 12
Southwest Logo
3:55 pm - 12:30 amSAN  San Diego-BOS Boston Logan Intl
5h 35mnonstop
Southwest Logo
8:40 am - 5:10 pmBOS  Boston Logan Intl-SAN San Diego
11h 30m2 stops Chicago Midway Omaha Eppley Airfield
$252Southwest
Sat, Sep 12 - Sat, Sep 19
Frontier Logo
10:06 pm - 10:58 amLAS  Las Vegas Harry Reid Intl-BOS Boston Logan Intl
9h 52m1 stop Orlando
Frontier Logo
12:54 pm - 11:44 pmBOS  Boston Logan Intl-LAS Las Vegas Harry Reid Intl
13h 50m2 stops Atlanta Hartsfield-Jackson Denver Intl
$253Frontier
Sun, Sep 27 - Sat, Oct 3
JetBlue Logo
8:27 pm - 5:22 amSAN  San Diego-BOS Boston Logan Intl
5h 55mnonstop
JetBlue Logo
5:16 pm - 8:27 pmBOS  Boston Logan Intl-SAN San Diego
6h 11mnonstop
$254JetBlue
Thu, Oct 22 - Wed, Oct 28
JetBlue Logo
1:17 pm - 10:25 pmSAN  San Diego-BOS Boston Logan Intl
6h 08mnonstop
JetBlue Logo
3:35 pm - 6:54 pmBOS  Boston Logan Intl-SAN San Diego
6h 19mnonstop
$254JetBlue
Fri, Oct 23 - Fri, Nov 6
Multiple Airlines Logo
11:16 pm - 10:52 amLAS  Las Vegas Harry Reid Intl-BOS Boston Logan Intl
8h 36m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
12:11 pm - 11:39 pmBOS  Boston Logan Intl-LAS Las Vegas Harry Reid Intl
14h 28m1 stop Des Moines
$254Multiple Airlines
Wed, Oct 21 - Wed, Oct 28
Multiple Airlines Logo
5:19 pm - 5:21 amLAS  Las Vegas Harry Reid Intl-BOS Boston Logan Intl
9h 02m1 stop San Diego
Multiple Airlines Logo
12:35 pm - 9:12 pmBOS  Boston Logan Intl-LAS Las Vegas Harry Reid Intl
11h 37m1 stop Atlanta Hartsfield-Jackson
$259Multiple Airlines
Sat, Sep 12 - Sat, Sep 19
United Airlines Logo
2:15 pm - 1:10 amSAN  San Diego-BOS Boston Logan Intl
7h 55m1 stop Chicago O'Hare Intl
United Airlines Logo
5:00 pm - 10:10 pmBOS  Boston Logan Intl-SAN San Diego
8h 10m1 stop Chicago O'Hare Intl
$262United Airlines
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Good to know

Low season

January

Cheapest flight

$124
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Ontario to Boston

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

Insights shared by verified travelers who flew the route from California to Boston 
Learn how KAYAK collects reviews and tips from users.
alyciaFlew with American Airlines-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-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-Jan 2025
At least two hour connection Buy food pre-flight

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.

Everything you need to know for your flight to Boston

Information on the airport you'll fly into in Boston

Boston (BOS)