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$594+ 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — SFO
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheapflights Tip: The best prices from Billund to San Francisco are usually found in February or March, booked 48 days in advance, depart on a Tuesday or Wednesday and return on a Sunday

Cheap flight deals from Billund to San Francisco

Best flights from Billund to San Francisco
Discover carefully curated flight deals from Billund to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

This British Airways deal was found by Cheapflights users on 12/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/181:20 pmBLL - SFO
2 stops39h 27mBritish Airways
Sun 2/226:44 amSFO - BLL
2 stops44h 36mBritish Airways
Deal found 12/25$594
This Ticket deal was found by Cheapflights users on 12/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/16:30 amBLL - SFO
1 stop15h 10mLufthansa
Fri 2/202:40 pmSFO - BLL
1 stop13h 40mLufthansa
Deal found 12/27$649
This Flysmarter deal was found by Cheapflights users on 12/26. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/68:50 pmBLL - SFO
2 stops29h 25mBritish Airways
Fri 3/206:18 amSFO - BLL
2 stops22h 02mBritish Airways
Deal found 12/26$619
This Ticket deal was found by Cheapflights users on 12/26. 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.
Sat 1/172:15 pmBLL - SFO
1 stop14h 55mLufthansa
Wed 1/218:25 amSFO - BLL
2 stops20h 00mLufthansa
Deal found 12/26$650
This British Airways deal was found by Cheapflights users on 12/26. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/171:05 pmBLL - SFO
2 stops18h 45mBritish Airways
Wed 1/211:25 pmSFO - BLL
2 stops37h 40mBritish Airways
Deal found 12/26$634
This Ticket deal was found by Cheapflights users on 12/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/106:30 amBLL - SFO
1 stop15h 10mLufthansa
Tue 2/177:00 amSFO - BLL
2 stops21h 40mLufthansa
Deal found 12/27$655

Find 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 December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$587
(Ticket)

Popular in

July

Cheapest in

February

Average price

$757
Provider with most accurate pricing for Billund-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Billund-San Francisco flights.
Search Deals
From Billund to San Francisco
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 28, 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 2/18

1:20 pm-7:47 pm

2 stops39h 27m

San Francisco

Sun 2/22

6:44 am-12:20 pm

2 stops44h 36m

$594

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Fri 3/6

8:50 pm-5:15 pm

2 stops29h 25m

San Francisco

Fri 3/20

6:18 am-12:20 pm

2 stops22h 02m

$619

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sat 1/17

1:05 pm-10:50 pm

2 stops18h 45m

San Francisco

Wed 1/21

1:25 pm-12:05 pm

2 stops37h 40m

$634

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sun 2/1

6:30 am-12:40 pm

1 stop15h 10m

San Francisco

Fri 2/20

2:40 pm-1:20 pm

1 stop13h 40m

$649

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sat 1/17

2:15 pm-8:10 pm

1 stop14h 55m

San Francisco

Wed 1/21

8:25 am-1:25 pm

2 stops20h 00m

$650

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Tue 2/10

6:30 am-12:40 pm

1 stop15h 10m

San Francisco

Tue 2/17

7:00 am-1:40 pm

2 stops21h 40m

$655

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

  • Most accurate provider: When it comes to deals on Billund-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Billund-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Billund-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Billund-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Billund-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 December 26, 2025.

Booking 48 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, February is the cheapest month in which you can book a flight from Billund to San Francisco (average of $519). Flying from Billund to San Francisco in July is currently the most expensive (average of $805). 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 December 28, 2025.
Read through reviews of airlines operating flights from Billund to San Francisco, such as Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,658 reviews

Entertainment

6.4

Crew

7.6

Overall

6.8

Comfort

6.8

Boarding

7.0

Food

6.3

Reviews

1 / 20
4.0
Okay

Djermouli,Dec 2025

FRA - SFO

I’m sorry the worst airline united food sales I’m diabetic plus high cholesterol pls seats it’s not comfortable plus screen tv broke I try to charge my phone don’t work I’m not flying with united airlines
Lufthansa
6.8
Okay
7,658 reviews
Lufthansa
6.8
Okay
7,658 reviews

Entertainment

6.4

Crew

7.6

Overall

6.8

Comfort

6.8

Boarding

7.0

Food

6.3

Reviews

1 / 20
4.0
Okay

Djermouli,Dec 2025

FRA - SFO

I’m sorry the worst airline united food sales I’m diabetic plus high cholesterol pls seats it’s not comfortable plus screen tv broke I try to charge my phone don’t work I’m not flying with united airlines

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.

  • How long is the flight from Billund to San Francisco?

    A quick flight from Billund to San Francisco can take about 30h 40m. British Airways provides one of the quickest options available for as low as $587. The distance between Billund and San Francisco is about 5382 mi.

  • What is the cheapest airline to fly from Billund to San Francisco round-trip?

    Lufthansa, at $537, was found to be the cheapest airline from Billund to San Francisco.. Lufthansa is priced at 32% 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, February is the cheapest month in which you can book a flight from Billund to San Francisco (average of $519). Flying from Billund to San Francisco in July is currently the most expensive (average of $805). 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
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Redwood City
Sunnyvale
San Bruno
Daly City
Santa Clara
San Carlos
Vallejo
Hollister
San Ramon
Foster City
Union City
Davis
Emeryville

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Billund to San Francisco

Discover the top airline 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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$537Average$674FlexibilityNo cancel feeOn-time76%

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