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$471+ Cheap flights from Billund (BLL) to San Francisco (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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — SFO
Feb 18 — Feb 251
Wed 2/18
Wed 2/25
1 adult, Economy
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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 January 19, 2026.

Round-trip from

$478
(Ticket)

One-way from

$471
(Trip.com)

Popular in

July

Cheapest in

February

Average price

$873
From Billund to San Francisco
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One-way flight from Billund to San Francisco
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Highest demand for flights based on searches. 9% potential increase in price ($82 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 19, 2026.

This Ticket deal was found by Cheapflights users on 1/19. 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.
Thu 2/56:30 am
BLL
-
SFO
1 stop15h 10m
Lufthansa
Mon 2/92:40 pm
SFO
-
BLL
1 stop23h 40m
Lufthansa
Deal found 1/19$478
This United Airlines deal was found by Cheapflights users on 1/18. 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.
Fri 11/66:30 am
BLL
-
SFO
1 stop15h 10m
United Airlines
Tue 11/108:45 am
SFO
-
BLL
2 stops24h 35m
United Airlines
Deal found 1/18$520
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Thu 2/56:30 am
BLL
-
SFO
2 stops21h 22m
United Airlines
Mon 2/910:50 pm
SFO
-
BLL
2 stops29h 50m
United Airlines
Deal found 1/19$526
This Flysmarter deal was found by Cheapflights users on 1/19. 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.
Thu 2/56:30 am
BLL
-
SFO
1 stop18h 25m
Multiple Airlines
Mon 2/92:40 pm
SFO
-
BLL
1 stop23h 40m
Multiple Airlines
Deal found 1/19$568

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 January 19, 2026.
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

Thu 2/5

6:30 am-12:40 pm

1 stop15h 10m

San Francisco

Mon 2/9

2:40 pm-11:20 pm

1 stop23h 40m

$478

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Tue 3/3

10:15 am-8:10 pm

1 stop18h 55m

San Francisco

Tue 3/10

10:35 am-1:40 pm

2 stops19h 05m

$520

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Thu 2/5

6:30 am-6:52 pm

2 stops21h 22m

San Francisco

Mon 2/9

10:50 pm-1:40 pm

2 stops29h 50m

$526

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Thu 2/5

6:30 am-6:52 pm

2 stops21h 22m

San Francisco

Mon 2/9

2:40 pm-11:20 pm

1 stop23h 40m

$574

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sat 6/13

12:30 pm-1:50 pm

1 stop34h 20m

$471

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sat 6/13

11:10 am-3:50 pm

2 stops37h 40m

$587

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/17

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 January 16, 2026.

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 $527). Flying from Billund to San Francisco in July is currently the most expensive (average of $691). 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 January 19, 2026.
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
7,731 reviews

Comfort

6.8

Boarding

7.0

Crew

7.6

Entertainment

6.4

Food

6.3

Overall

6.8

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
7,731 reviews
Lufthansa
6.8
Okay
7,731 reviews

Comfort

6.8

Boarding

7.0

Crew

7.6

Entertainment

6.4

Food

6.3

Overall

6.8

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 15h 10m. Lufthansa provides one of the quickest options available for as low as $478. The distance between Billund and San Francisco is about 5382 mi. This flight may include one or multiple stops.

  • 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 $527). Flying from Billund to San Francisco in July is currently the most expensive (average of $691). 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
South San Francisco
Santa Cruz
Roseville
Santa Clara
Livermore
Watsonville
San Bruno
Daly City
Sunnyvale
Vacaville
Turlock
San Carlos
San Ramon
Manteca
Vallejo
San Lorenzo
Davis
Hollister
Redwood City
Union City

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 January 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$537Average$674FlexibilityNo cancel feeOn-time76%

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