How does KAYAK find such low prices on flights from Maine to San Francisco?

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 Maine to San Francisco. 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 Maine to San Francisco?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Maine 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 Maine to San Francisco?

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 San Francisco with an airline and back to Maine 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 Maine to San Francisco?

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 San Francisco from Maine 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>

$114 CHEAP FLIGHTS from Maine to San Francisco

SFO

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

...and more

Travelers love KAYAK

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

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

Cheapest round-trip

$217

Overall average: $357

Alaska Airlines

Thu 2/19Wed 2/25

BOS - SFO • 1 stop

Cheapest non-stop

$222

Typical prices: $258-$504

JetBlue

Thu 2/19Wed 2/25

BOS - SFO • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to San Francisco!

Flight Deals

Cheap Flights from Maine to San Francisco

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 Maine to San Francisco

Thu, Feb 19 - Wed, Feb 25

4:36 pm - 11:44 pm

BOS

SFO

10h 08m

1 stop

11:34 am - 11:59 pm

SFO

BOS

9h 25m

1 stop

$217Alaska Airlines

Thu, Feb 19 - Wed, Feb 25

4:36 pm - 11:44 pm

BOS

SFO

10h 08m

1 stop

6:40 am - 5:24 pm

SFO

BOS

7h 44m

1 stop

$218Alaska Airlines

Wed, Apr 22 - Mon, Apr 27

8:19 pm - 11:59 pm

BOS

SFO

6h 40mnonstop

10:38 pm - 12:05 pm

SFO

BOS

10h 27m

1 stop

$219Multiple Airlines

Tue, Apr 14 - Wed, Apr 15

6:00 am - 4:54 pm

BOS

SFO

13h 54m

1 stop

10:38 pm - 11:45 am

SFO

BOS

10h 07m

1 stop

$221Frontier

Thu, Feb 26 - Tue, Mar 3

6:00 am - 9:58 am

BOS

SFO

6h 58mnonstop

10:35 am - 9:51 pm

SFO

BOS

8h 16m

1 stop

$222United Airlines

Wed, Mar 11 - Wed, Mar 18

11:51 am - 7:14 pm

BOS

SFO

10h 23m

1 stop

3:25 pm - 11:58 pm

SFO

BOS

5h 33mnonstop

$224Multiple Airlines

Tue, Feb 24 - Mon, Mar 2

6:00 am - 9:39 pm

BOS

SFO

18h 39m

1 stop

6:15 am - 1:13 am

SFO

BOS

39h 58m

2 stops

$226Frontier

Fri, Feb 20 - Thu, Feb 26

7:19 pm - 1:28 am

BOS

SFO

9h 09m

1 stop

4:10 pm - 12:49 am

SFO

BOS

5h 39mnonstop

$227United Airlines

Thu, Feb 26 - Thu, Mar 5

5:40 pm - 11:47 pm

PWM

SFO

9h 07m

1 stop

6:00 am - 5:07 pm

SFO

PWM

8h 07m

1 stop

$287American Airlines

Wed, Apr 22 - Wed, Apr 29

11:56 am - 8:11 pm

PWM

SFO

11h 15m

1 stop

10:50 am - 11:10 pm

SFO

PWM

9h 20m

1 stop

$314American Airlines

Useful Info

Low season	September
High season	March
Cheapest flight	$114

Best time to beat the crowds with an average 7% drop in price.

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

Flight from Boston to San Francisco

How does KAYAK find such low prices on flights from Maine to San Francisco?
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 Maine to San Francisco.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Maine to San Francisco?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Maine 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 Maine to San Francisco?
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 San Francisco with an airline and back to Maine with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maine to San Francisco?
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 San Francisco from Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Calistoga

Rohnert Park

Marina

Emeryville

Capitola

Pacifica

Millbrae

Campbell

Mill Valley

Newark

Novato

Windsor

Union City

Richmond

Belmont

West Sacramento

Los Altos

American Canyon

Corte Madera

Jenner

Everything you need to know for your flight to San Francisco

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 San Francisco

San Francisco (SFO)

SFO

$114 Find Cheap Flights from Maine to San Francisco

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

Everything you should know

Cheap Flights from Maine to San Francisco

Recent round-trip flight deals from Maine to San Francisco

Recent one-way flight deals from Maine to San Francisco

Recent last minute flight deals from Maine to San Francisco

Recent direct flight deals from Maine to San Francisco

Good to know

FAQs for booking flights from Maine to San Francisco

How does KAYAK find such low prices on flights from Maine to San Francisco?

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 Maine to San Francisco.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Maine 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 Maine to San Francisco?

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 San Francisco with an airline and back to Maine with another airline.

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

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 San Francisco from Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near San Francisco?

Everything you need to know for your flight to San Francisco

Information on the airport you'll fly into in San Francisco

Cabin class types available on flights to Maine

Complete your trip to San Francisco with a hotel stay or car rental

Find direct flights for San Francisco

Flights to other popular destinations

Flights from domestic origins to San Francisco

Choose which airport to fly into in San Francisco

Find deals for your return flight