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Cheap flights from Helsinki to San Francisco from $358

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helsinki to San Francisco departing on 8/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Helsinki to San Francisco

Cheap round-trip flights

Logo
6:50 pm - 11:45 amHEL-SFO
26h 55m2 stops
Logo
3:05 pm - 11:35 pmSFO-HEL
22h 30m2 stops
$556
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Mon, Oct 6 - Mon, Oct 20
Logo
5:35 pm - 11:45 amHEL-SFO
28h 10m2 stops
Logo
3:05 pm - 11:35 pmSFO-HEL
22h 30m2 stops
$557
Find Deal
Mon, Oct 6 - Mon, Oct 20
Scandinavian Airlines Logo
6:15 am - 2:35 pmHEL-SFO
18h 20m1 stop
Scandinavian Airlines Logo
4:40 pm - 8:20 pmSFO-HEL
17h 40m1 stop
$619Scandinavian Airlines
Find Deal
Mon, Nov 24 - Mon, Dec 8
Scandinavian Airlines Logo
6:35 am - 4:30 pmHEL-SFO
19h 55m1 stop
Scandinavian Airlines Logo
4:40 pm - 3:25 pmSFO-HEL
12h 45m1 stop
$620Scandinavian Airlines
Find Deal
Thu, Oct 23 - Thu, Nov 6
KLM Logo
1:55 pm - 11:45 amHEL-SFO
31h 50m1 stop
KLM Logo
1:45 pm - 5:40 pmSFO-HEL
17h 55m2 stops
$656KLM
Find Deal
Sun, Oct 5 - Mon, Oct 20
Delta Logo
7:00 am - 11:45 amHEL-SFO
14h 45m1 stop
Delta Logo
3:05 pm - 4:40 pmSFO-HEL
15h 35m1 stop
$657Delta
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Mon, Oct 6 - Mon, Oct 20
Delta Logo
7:00 am - 12:50 pmHEL-SFO
14h 50m1 stop
Delta Logo
1:55 pm - 5:25 pmSFO-HEL
17h 30m1 stop
$662Delta
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Fri, Oct 31 - Mon, Nov 3
KLM Logo
7:00 am - 5:49 pmHEL-SFO
20h 49m2 stops
KLM Logo
1:45 pm - 5:40 pmSFO-HEL
17h 55m2 stops
$709KLM
Find Deal
Mon, Oct 6 - Mon, Oct 20
Air Canada Logo
6:10 am - 7:38 pmHEL-SFO
23h 28m2 stops
Air Canada Logo
8:30 am - 12:50 pmSFO-HEL
18h 20m2 stops
$730Air Canada
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Wed, Sep 17 - Wed, Sep 24
Air Canada Logo
6:55 am - 5:25 pmHEL-SFO
19h 30m2 stops
Air Canada Logo
6:53 pm - 4:30 pmSFO-HEL
35h 37m2 stops
$747Air Canada
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Fri, Oct 31 - Tue, Nov 4

KLM flights from Helsinki to San Francisco

Our best KLM deals on Helsinki to San Francisco flight tickets
KLM
Oct 5
HEL1:55 pmHelsinki-Vantaa
31h 50m
1 stop
SFO11:45 amSan Francisco
Oct 20
SFO1:45 pmSan Francisco
17h 55m
2 stops
HEL5:40 pmHelsinki-Vantaa
$656
Find similar
KLM
Oct 6
HEL7:00 amHelsinki-Vantaa
20h 49m
2 stops
SFO5:49 pmSan Francisco
Oct 20
SFO1:45 pmSan Francisco
17h 55m
2 stops
HEL5:40 pmHelsinki-Vantaa
$709
Find similar
KLM
Sep 1
HEL7:00 amHelsinki-Vantaa
20h 17m
2 stops
SFO5:17 pmSan Francisco
Sep 7
SFO1:41 pmSan Francisco
17h 59m
2 stops
HEL5:40 pmHelsinki-Vantaa
$968
Find similar

United Airlines flights from Helsinki to San Francisco

Our best United Airlines deals on Helsinki to San Francisco flight tickets
United Airlines
Oct 31
HEL6:55 amHelsinki-Vantaa
15h 45m
1 stop
SFO1:40 pmSan Francisco
Nov 3
SFO1:30 pmSan Francisco
19h 20m
1 stop
HEL6:50 pmHelsinki-Vantaa
$746
Find similar
United Airlines
Oct 28
HEL7:05 amHelsinki-Vantaa
18h 50m
1 stop
SFO4:55 pmSan Francisco
Nov 3
SFO11:20 amSan Francisco
19h 20m
2 stops
HEL4:40 pmHelsinki-Vantaa
$749
Find similar
United Airlines
Oct 28
HEL7:05 amHelsinki-Vantaa
19h 33m
2 stops
SFO5:38 pmSan Francisco
Nov 4
SFO1:25 pmSan Francisco
19h 25m
2 stops
HEL6:50 pmHelsinki-Vantaa
$752
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Helsinki 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, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Helsinki to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Mon 10/6

6:50 pm-11:45 am

2 stops26h 55m

San Francisco

Mon 10/20

3:05 pm-11:35 pm

2 stops22h 30m

$556

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Mon 10/6

5:35 pm-11:45 am

2 stops28h 10m

San Francisco

Mon 10/20

3:05 pm-11:35 pm

2 stops22h 30m

$557

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Mon 11/24

6:15 am-2:35 pm

1 stop18h 20m

San Francisco

Mon 12/8

4:40 pm-8:20 pm

1 stop17h 40m

$619

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Thu 10/23

6:35 am-4:30 pm

1 stop19h 55m

San Francisco

Thu 11/6

4:40 pm-3:25 pm

1 stop12h 45m

$620

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Sun 10/5

1:55 pm-11:45 am

1 stop31h 50m

San Francisco

Mon 10/20

1:45 pm-5:40 pm

2 stops17h 55m

$656

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Mon 10/6

7:00 am-11:45 am

1 stop14h 45m

San Francisco

Mon 10/20

3:05 pm-4:40 pm

1 stop15h 35m

$657

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Fri 10/31

7:00 am-12:50 pm

1 stop14h 50m

San Francisco

Mon 11/3

1:55 pm-5:25 pm

1 stop17h 30m

$662

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Mon 10/6

7:00 am-5:49 pm

2 stops20h 49m

San Francisco

Mon 10/20

1:45 pm-5:40 pm

2 stops17h 55m

$709

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Wed 9/17

6:10 am-7:38 pm

2 stops23h 28m

San Francisco

Wed 9/24

8:30 am-12:50 pm

2 stops18h 20m

$730

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Fri 10/31

6:55 am-5:25 pm

2 stops19h 30m

San Francisco

Tue 11/4

6:53 pm-4:30 pm

2 stops35h 37m

$747

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Helsinki to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Helsinki and San Francisco?

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $788.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Helsinki to San Francisco is on a Wednesday when prices can be found for as low as $756. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $1,053.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Helsinki to San Francisco flights are usually those with departure times in the morning. Our users have found flights to San Francisco in the morning for as low as $911. Flights at noon are often more expensive with an average ticket price of $1,027.

What is the cheapest Helsinki-Vantaa to San Francisco flight route?

Fly from Helsinki-Vantaa to San Francisco for the best Helsinki-Vantaa - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from Helsinki when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $863 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Helsinki for as low as $783 on momondo.

What cabin class options are available on Helsinki-Vantaa to San Francisco flights?

There are 1 cabin classes available to choose from on Helsinki-Vantaa to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Helsinki to San Francisco flight prices changed over time?

As of August 2025, prices for Helsinki to San Francisco flights are approximately 69% more expensive when compared to flights at the same time last year.

When to book flights from Helsinki to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Helsinki to San Francisco according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Helsinki to San Francisco (HEL to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helsinki to San Francisco

Best Price Found

$358

Fastest flight time

14h 45m

Direct flights

None

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from Helsinki in the past 72 hours is $358. The best round-trip flight deal from Helsinki to San Francisco found on momondo in the last 72 hours is $556.
The fastest flight from Helsinki to San Francisco takes 14h 45m
There are no direct flights from Helsinki to San Francisco. Popular non-direct route for this connection is Helsinki-Vantaa Airport - San Francisco Airport.
There is 1 airport near San Francisco: San Francisco (SFO)
Search flight deals

  • How far is Helsinki-Vantaa to San Francisco by plane?

    San Francisco is 5415.4 mi away from Helsinki-Vantaa. Flights usually cover this in 14h 45m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Helsinki-Vantaa Airport to San Francisco Airport?

    Prices for flights from Helsinki-Vantaa Airport to San Francisco Airport are updated daily.

  • How many operators does momondo search for flights from Helsinki-Vantaa Airport to San Francisco Airport?

  • How old do you have to be to fly from Helsinki-Vantaa Airport to San Francisco Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Helsinki-Vantaa Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Helsinki to San Francisco?

Best airlines flying from Helsinki to San Francisco

Compare and see reviews for airlines that fly from Helsinki to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $685Free CancellationRating
7.4
1,470 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $715Free CancellationRating
6.8
7,330 reviews
Search Lufthansa flights
American AirlinesPriceFrom $867Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Calistoga
Sonoma
Hayward
Bodega Bay
Roseville
Santa Clara
Big Sur
Daly City
Fremont
Berkeley
Walnut Creek
Half Moon Bay
South San Francisco
Vallejo
Redwood City
Sunnyvale
Pacific Grove

Why use momondo?

Why should I use momondo to find a flight deal from Helsinki to San Francisco?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Helsinki to San Francisco. momondo saves you time and could save you money on your trip.

Can I find flights from Helsinki to San Francisco with flexible booking policies on momondo?

Yes. All flights to San Francisco from Helsinki on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Helsinki to San Francisco?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Francisco from Helsinki.

I’m not ready to book a flight from Helsinki to San Francisco right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from Helsinki and alert you when they change.

An easier way to manage your San Francisco trip

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