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$255+ Cheap flights from Bangor, ME to San Francisco (BGR - SFO)

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
BGR — SFO
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Bangor to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Bangor (BGR) to San Francisco (SFO). 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 July 29, 2025.

Round-trip from

$309
(American Airlines)

One-way from

$255
(American Airlines)

Popular in

May

Cheapest in

January

Average price

$437
From Bangor to San Francisco
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One-way flight from Bangor to San Francisco
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Highest demand for flights based on searches. 9% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Bangor to San Francisco

Cheapest flights from Bangor to San Francisco
Explore the most affordable flight options available from Bangor to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/512:58 pmBGR - SFO
1 stop12h 04mAmerican Airlines
Sun 9/146:30 amSFO - BGR
1 stop11h 09mAmerican Airlines
Deal found 7/29$309
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/66:00 amBGR - SFO
2 stops14h 32mDelta
Tue 9/910:57 pmSFO - BGR
2 stops9h 28mDelta
Deal found 7/27$319
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/66:40 amBGR - SFO
1 stop10h 14mUnited Airlines
Tue 9/911:25 pmSFO - BGR
1 stop8h 42mUnited Airlines
Deal found 7/28$439

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bangor to San Francisco 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 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Bangor to San Francisco that are best for you.

Fly from

Bangor

Fly to

San Francisco

Route

Depart

Return

Price

BangorSan Francisco

BGR - SFO

BGRSFO

Bangor

Fri 9/5

12:58 pm-10:02 pm

1 stop12h 04m

San Francisco

Sun 9/14

6:30 am-8:39 pm

1 stop11h 09m

$309

BangorSan Francisco

BGR - SFO

BGRSFO

Bangor

Sat 9/6

6:00 am-2:27 pm

2 stops11h 27m

San Francisco

Tue 9/9

10:57 pm-11:25 am

2 stops9h 28m

$319

BangorSan Francisco

BGR - SFO

BGRSFO

Bangor

Sat 9/6

6:40 am-1:54 pm

1 stop10h 14m

San Francisco

Tue 9/9

11:25 pm-11:07 am

1 stop8h 42m

$439

BangorSan Francisco

BGR - SFO

BGRSFO

Bangor

Tue 9/2

1:02 pm-8:51 pm

2 stops10h 49m

$255

BangorSan Francisco

BGR - SFO

BGRSFO

Bangor

Fri 8/8

8:07 pm-8:08 am

3 stops39h 01m

$382

BangorSan Francisco

BGR - SFO

BGRSFO

Bangor

Sun 8/10

6:05 am-11:29 am

1 stop8h 24m

$791

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Best time to book a flight from Bangor to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Bangor with our price prediction graph.
Estimated round-trip 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 Bangor to San Francisco

What is the cheapest month to book a flight from Bangor, Maine to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Bangor, Maine to San Francisco (average of $276). Flying from Bangor, Maine to San Francisco in June is currently the most expensive (average of $358). 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.

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated July 29, 2025.
Read through reviews of airlines operating flights from Bangor to San Francisco, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Bangor to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Bangor, Maine to San Francisco round-trip?

    Flying on American Airlines is currently your cheapest option to San Francisco, with prices starting at $309. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $319 and $439, respectively. American Airlines is priced at 46% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Bangor to San Francisco that include hotel bookings?

    Yes. In addition to deals on Bangor to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Bangor to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bangor to San Francisco.

  • Can I find deals for business class flights from Bangor to San Francisco?

    Yes. Cheapflights offers flight deals from Bangor to San Francisco 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 Bangor, Maine to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Bangor, Maine to San Francisco (average of $276). Flying from Bangor, Maine to San Francisco in June is currently the most expensive (average of $358). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Mountain View
Santa Cruz
South San Francisco
Livermore
Turlock
Manteca
Antioch
Hollister
Watsonville
Sunnyvale
Newark
Milpitas
Campbell
Foster City
Capitola
Santa Clara
San Leandro
Burlingame
Redwood City

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Top 2 airlines flying from Bangor to San Francisco

Discover the top 2 airlines that operate flights from Bangor to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$302Average$523FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$404Average$803FlexibilityNo cancel feeOn-time69%

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