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$669+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — SFO
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Cheap 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 February 19, 2026.

This Ticket deal was found by Cheapflights users on 2/15. 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 3/12:05 pm
BLL
-
SFO
1 stop15h 05m
Lufthansa
Thu 3/52:40 pm
SFO
-
BLL
1 stop13h 40m
Lufthansa
Deal found 2/15$669
This United Airlines deal was found by Cheapflights users on 2/18. 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 11/102:40 pm
SFO
-
BLL
1 stop18h 40m
United Airlines
Deal found 2/18$697
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Sun 4/510:35 am
BLL
-
SFO
2 stops20h 55m
United Airlines
Sun 4/126:33 am
SFO
-
BLL
2 stops18h 37m
United Airlines
Deal found 2/19$703
This Billigflug deal was found by Cheapflights users on 2/15. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:55 pm
BLL
-
SFO
1 stop26h 45m
Multiple Airlines
Thu 3/51:40 pm
SFO
-
BLL
1 stop19h 40m
Multiple Airlines
Deal found 2/15$746
This BusinessClass deal was found by Cheapflights users on 2/19. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/56:00 am
BLL
-
SFO
1 stop18h 25m
Lufthansa
Sun 4/121:40 pm
SFO
-
BLL
1 stop35h 25m
Lufthansa
Deal found 2/19$774
This Cheapflightsfares deal was found by Cheapflights users on 2/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/242:15 pm
BLL
-
SFO
1 stop14h 55m
Lufthansa
Sat 2/286:50 pm
SFO
-
BLL
1 stop19h 30m
Lufthansa
Deal found 2/17$779

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 February 19, 2026.

Round-trip from

$669
(Ticket)

Popular in

January

Cheapest in

February

Average price

$626
From Billund to San Francisco
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($6 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 February 2026
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 February 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

Sun 3/1

2:05 pm-8:10 pm

1 stop15h 05m

San Francisco

Thu 3/5

2:40 pm-1:20 pm

1 stop13h 40m

$669

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sun 4/5

6:00 am-3:25 pm

1 stop18h 25m

San Francisco

Sun 4/12

6:33 am-10:10 am

2 stops18h 37m

$697

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Wed 4/1

2:55 pm-8:00 pm

1 stop14h 05m

San Francisco

Wed 4/8

7:15 pm-5:50 pm

1 stop13h 35m

$700

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sun 3/1

6:55 pm-12:40 pm

1 stop26h 45m

San Francisco

Thu 3/5

1:40 pm-6:20 pm

1 stop19h 40m

$746

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sun 4/5

6:00 am-3:25 pm

1 stop18h 25m

San Francisco

Sun 4/12

1:40 pm-10:05 am

1 stop35h 25m

$774

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Tue 2/24

2:15 pm-8:10 pm

1 stop14h 55m

San Francisco

Sat 2/28

6:50 pm-11:20 pm

1 stop19h 30m

$779

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sat 8/1

6:55 pm-7:21 pm

2 stops33h 26m

$881

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sat 8/1

6:55 pm-11:21 pm

2 stops37h 26m

$883

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sat 8/1

10:25 am-8:15 pm

1 stop18h 50m

$985

BillundSan Francisco

BLL - SFO

BLLSFO

Billund

Sat 8/1

6:00 am-11:54 pm

3 stops26h 54m

$1,743

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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 February 18, 2026.

Booking 66 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, December is the cheapest month in which you can book a flight from Billund to San Francisco (average of $540). 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 February 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
7,790 reviews

Comfort

6.8

Food

6.3

Entertainment

6.5

Boarding

7.0

Overall

6.8

Crew

7.6

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
7,790 reviews
Lufthansa
6.8
Okay
7,790 reviews

Comfort

6.8

Food

6.3

Entertainment

6.5

Boarding

7.0

Overall

6.8

Crew

7.6

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 05m. Lufthansa provides one of the quickest options available for as low as $669. 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 34% 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, December is the cheapest month in which you can book a flight from Billund to San Francisco (average of $540). 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
Santa Clara
Livermore
Roseville
Watsonville
San Bruno
Daly City
Sunnyvale
Turlock
Vacaville
San Carlos
San Ramon
Redwood City
Rancho Cordova
San Lorenzo
Davis
Hollister
Manteca
Union City

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$537Average$729FlexibilityNo cancel feeOn-time76%

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