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>

$139 CHEAP FLIGHTS from Maine to San Francisco

SFO

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

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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, Apr 9 - Mon, Apr 13

5:30 am - 7:19 pm

BOS

SFO

16h 49m

1 stop

10:03 pm - 11:45 am

SFO

BOS

10h 42m

1 stop

$255Frontier

Thu, Apr 2 - Sat, Apr 11

5:30 am - 7:14 pm

BOS

SFO

16h 44m

1 stop

10:23 pm - 11:45 am

SFO

BOS

10h 22m

1 stop

$256Frontier

Wed, Apr 29 - Tue, May 5

6:00 am - 5:34 pm

BOS

SFO

14h 34m

1 stop

10:25 am - 11:59 pm

SFO

BOS

10h 34m

1 stop

$259Multiple Airlines

Wed, Apr 1 - Tue, Apr 14

5:45 am - 7:14 pm

BOS

SFO

16h 29m

1 stop

10:38 pm - 12:10 pm

SFO

BOS

10h 32m

1 stop

$260Frontier

Mon, Apr 13 - Sun, Apr 19

6:00 am - 12:47 pm

BOS

SFO

9h 47m

1 stop

10:38 pm - 11:25 am

SFO

BOS

9h 47m

1 stop

$262Multiple Airlines

Thu, Apr 9 - Wed, Apr 15

6:00 am - 12:47 pm

BOS

SFO

9h 47m

1 stop

6:40 pm - 5:53 am

SFO

BOS

8h 13m

1 stop

$268Hawaiian Airlines

Wed, Apr 22 - Wed, Apr 29

2:51 pm - 9:23 pm

PWM

SFO

9h 32m

1 stop

11:50 am - 12:46 am

SFO

PWM

9h 56m

1 stop

$291Delta

Wed, Apr 8 - Mon, Apr 13

7:10 am - 3:46 pm

PWM

SFO

11h 36m

1 stop

12:59 am - 3:09 pm

SFO

PWM

11h 10m

2 stops

$296American Airlines

Thu, May 7 - Wed, May 13

12:55 pm - 5:49 pm

PWM

SFO

7h 54m

1 stop

7:15 am - 12:43 am

SFO

PWM

14h 28m

2 stops

$306Delta

Thu, May 7 - Tue, May 12

3:02 pm - 10:52 pm

PWM

SFO

10h 50m

1 stop

5:30 am - 6:58 pm

SFO

PWM

10h 28m

2 stops

$326American Airlines

Useful Info

Low season	January
High season	May
Cheapest flight	$139

Best time to beat the crowds with an average 5% drop in price.

Most popular time to fly and prices are also 7% 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

Pacifica

Capitola

Millbrae

Campbell

Newark

Mill Valley

Novato

Windsor

Union City

Belmont

Richmond

West Sacramento

American Canyon

Corte Madera

Los Altos

Jenner

Everything you need to know for your flight to San Francisco

Airports

Cabin class

Complete your trip

Direct Flights

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Origins

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Return flight deals

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

San Francisco (SFO)

SFO

$139 Find Cheap Flights from Maine to San Francisco

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

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