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$555+ Cheap flights from Billund (BLL) to San Francisco (SFO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — SFO
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
1 adult, Economy
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Cheapflights Tip: The best prices from Billund to San Francisco are usually found in November or February, booked 64 days in advance, depart on a Tuesday or Wednesday and return on a Sunday

Cheap flight deals from Billund to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Billund (BLL) 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 2, 2025.

Round-trip from

$555
(American Airlines)

Popular in

July

Cheapest in

November

Average price

$1,042
From Billund to San Francisco
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($161 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from Billund to San Francisco

Cheapest flights from Billund to San Francisco
Explore the most affordable flight options available from Billund to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

This American Airlines deal was found by Cheapflights users on 7/2. 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.
Wed 12/171:20 pmBLL - SFO
2 stops35h 33mAmerican Airlines
Wed 1/710:40 amSFO - BLL
2 stops40h 25mAmerican Airlines
Deal found 7/2$555
This Travelis deal was found by Cheapflights users on 7/2. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:20 pmBLL - SFO
2 stops40h 24mBritish Airways
Wed 1/711:59 pmSFO - BLL
2 stops35h 01mBritish Airways
Deal found 7/2$566
This Travelis deal was found by Cheapflights users on 7/1. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1710:25 amBLL - SFO
1 stop18h 45mLufthansa
Wed 1/71:35 pmSFO - BLL
1 stop14h 55mLufthansa
Deal found 7/1$664
This Delta deal was found by Cheapflights users on 7/2. 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.
Mon 8/186:00 amBLL - SFO
2 stops20h 32mDelta
Sun 8/246:00 amSFO - BLL
2 stops20h 05mDelta
Deal found 7/2$741
This SWISS deal was found by Cheapflights users on 7/2. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:40 pmBLL - SFO
2 stops27h 55mSWISS
Tue 8/197:40 pmSFO - BLL
2 stops37h 10mSWISS
Deal found 7/2$761
This Air France deal was found by Cheapflights users on 7/2. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/126:35 pmBLL - SFO
1 stop26h 10mAir France
Mon 8/183:05 pmSFO - BLL
1 stop22h 20mAir France
Deal found 7/2$786
This Air France deal was found by Cheapflights users on 7/2. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:35 pmBLL - SFO
1 stop26h 10mMultiple Airlines
Mon 8/1810:00 amSFO - BLL
2 stops16h 10mMultiple Airlines
Deal found 7/2$886
This Ticket deal was found by Cheapflights users on 7/2. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:00 amBLL - SFO
2 stops22h 40mAir Canada
Sun 8/2411:35 amSFO - BLL
2 stops17h 30mAir Canada
Deal found 7/2$1,148

Cheapflights Fare Finder

Customize your flight search to find flights from Billund 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 2, 2025.
Use the filters below to find and compare flights from Billund to San Francisco that are best for you.

Fly from

Billund

Fly to

San Francisco

Route

Depart

Return

Price

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Wed 12/17

1:20 pm-3:53 pm

2 stops35h 33m

San Francisco

Wed 1/7

10:40 am-12:05 pm

2 stops40h 25m

$555

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Wed 12/17

1:20 pm-8:44 pm

2 stops40h 24m

San Francisco

Wed 1/7

11:59 pm-8:00 pm

2 stops35h 01m

$566

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Wed 12/17

10:25 am-8:10 pm

1 stop18h 45m

San Francisco

Wed 1/7

1:35 pm-1:30 pm

1 stop14h 55m

$664

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Mon 8/18

6:00 am-5:32 pm

2 stops20h 32m

San Francisco

Sun 8/24

6:00 am-11:05 am

2 stops20h 05m

$741

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Mon 8/11

6:40 pm-1:35 pm

2 stops27h 55m

San Francisco

Tue 8/19

7:40 pm-5:50 pm

2 stops37h 10m

$761

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Tue 8/12

6:35 pm-11:45 am

1 stop26h 10m

San Francisco

Mon 8/18

3:05 pm-10:25 pm

1 stop22h 20m

$786

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Mon 8/11

6:35 pm-11:45 am

1 stop26h 10m

San Francisco

Mon 8/18

10:00 am-11:10 am

2 stops16h 10m

$886

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Mon 8/18

6:00 am-7:40 pm

2 stops22h 40m

San Francisco

Sun 8/24

11:35 am-2:05 pm

2 stops17h 30m

$1,148

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Best time to book a flight from Billund to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Billund 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 Billund to San Francisco

How far ahead should I book a flight from Billund to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Billund to San Francisco. Price data was last updated on June 27, 2025.

Booking 64 days in advance of your planned departure date is, on average, the best time to get cheap flights from Billund to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Billund to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Billund to San Francisco (average of $276). Flying from Billund to San Francisco in June is currently the most expensive (average of $360). 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.

What is the cheapest time of day to fly from BLL to SFO?

Find hourly flight availability from Billund to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 2, 2025.

It’s optimal to fly from Billund to San Francisco in the morning. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight at noon.

How much does it cost to fly round-trip from Billund to San Francisco?

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 2, 2025.
Read through reviews of airlines operating flights from Billund to San Francisco, such as Delta, Air France, and SWISS. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

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
7,983 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

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
Air France
7.5
Good
1,472 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

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
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

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
7,983 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

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
Air Canada
7.1
Good
9,669 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

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 Billund 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 Billund to San Francisco round-trip?

    American Airlines, at $555, was found to be the cheapest airline from Billund to San Francisco.Alternate airlines to your destination round-trip include British Airways and Lufthansa. American Airlines is priced at 25% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Billund 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 Billund to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Billund to San Francisco (average of $276). Flying from Billund to San Francisco in June is currently the most expensive (average of $360). 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 Billund?

Book flights to Billund if you plan to visit one of these locations
Roseville
Mountain View
South San Francisco
Livermore
Santa Cruz
Turlock
Manteca
Watsonville
Antioch
Hollister
Newark
Alameda
Hayward
Milpitas
Sunnyvale
Daly City
Campbell
Foster City
Capitola
Richmond

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Billund to San Francisco

Discover the top 2 airlines that operate flights from Billund 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 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$537Average$621FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$540Average$612FlexibilityNo cancel feeOn-time69%

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