HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helsinki

$349+ Cheap flights from San Francisco (SFO) to Helsinki (HEL)

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HEL
Jul 16 — Jul 231
Wed 7/16
Wed 7/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco to Helsinki with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San Francisco to Helsinki-Vantaa are usually found in November or October, booked 42 days in advance, depart on a Sunday or Tuesday and return on a Wednesday

Cheap flight deals from San Francisco to Helsinki

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Helsinki (HEL). 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 11, 2025.

Round-trip from

$563
(Gotogate)

One-way from

$349
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,172
From San Francisco to Helsinki-Vantaa
Search Deals
One-way flight from San Francisco to Helsinki-Vantaa
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($166 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from San Francisco to Helsinki

Cheapest flights from San Francisco to Helsinki
Explore the most affordable flight options available from San Francisco to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2025.

This oojo deal was found by Cheapflights users on 7/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/227:40 pmSFO - HEL
1 stop18h 25mScandinavian Airlines
Mon 10/279:00 pmHEL - SFO
1 stop28h 10mScandinavian Airlines
Deal found 7/9$561
This Gotogate deal was found by Cheapflights users on 7/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/169:05 pmSFO - HEL
1 stop16h 45mMultiple Airlines
Tue 9/236:10 amHEL - SFO
2 stops19h 18mMultiple Airlines
Deal found 7/10$563
This Finnair deal was found by Cheapflights users on 7/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/510:25 amSFO - HEL
1 stop17h 30mFinnair
Tue 11/114:00 pmHEL - SFO
1 stop14h 55mFinnair
Deal found 7/10$569
This American Airlines deal was found by Cheapflights users on 7/10. 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 11/510:24 amSFO - HEL
1 stop14h 21mAmerican Airlines
Wed 2/1812:30 pmHEL - SFO
2 stops19h 58mAmerican Airlines
Deal found 7/10$579
This FlightHub deal was found by Cheapflights users on 7/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/76:45 pmSFO - HEL
1 stop30h 55mTurkish Airlines
Thu 9/1112:35 pmHEL - SFO
1 stop38h 05mTurkish Airlines
Deal found 7/10$584
This Air Canada deal was found by Cheapflights users on 7/10. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/58:25 amSFO - HEL
2 stops24h 15mAir Canada
Wed 11/126:50 amHEL - SFO
2 stops24h 50mAir Canada
Deal found 7/10$589
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Wed 11/52:49 pmSFO - HEL
2 stops17h 51mUnited Airlines
Wed 11/126:50 amHEL - SFO
1 stop23h 20mUnited Airlines
Deal found 7/10$594
This Brussels Airlines deal was found by Cheapflights users on 7/10. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/22:40 pmSFO - HEL
1 stop24h 35mBrussels Airlines
Wed 2/186:50 amHEL - SFO
1 stop15h 45mBrussels Airlines
Deal found 7/10$600
This Delta deal was found by Cheapflights users on 7/9. 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 8/184:10 pmSFO - HEL
2 stops32h 25mDelta
Wed 9/177:10 amHEL - SFO
2 stops21h 42mDelta
Deal found 7/9$601
This Lufthansa deal was found by Cheapflights users on 7/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/52:45 pmSFO - HEL
2 stops24h 30mLufthansa
Fri 2/206:55 amHEL - SFO
1 stop15h 45mLufthansa
Deal found 7/10$605

Cheapflights Fare Finder

Customize your flight search to find flights from San Francisco to Helsinki 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 11, 2025.
Use the filters below to find and compare flights from San Francisco to Helsinki that are best for you.

Fly from

San Francisco

Fly to

Helsinki

Route

Depart

Return

Price

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 9/16

9:05 pm-11:50 pm

1 stop16h 45m

Helsinki-Vantaa

Tue 9/23

6:10 am-3:28 pm

2 stops19h 18m

$563

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 9/16

8:00 am-10:45 am

1 stop16h 45m

Helsinki-Vantaa

Tue 9/23

12:35 pm-6:35 pm

1 stop16h 00m

$570

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Thu 8/7

6:45 pm-11:40 am

1 stop30h 55m

Helsinki-Vantaa

Thu 9/11

12:35 pm-4:40 pm

1 stop38h 05m

$584

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Wed 8/6

8:45 am-6:55 pm

2 stops24h 10m

Helsinki-Vantaa

Fri 8/22

6:10 am-3:55 pm

1 stop19h 45m

$594

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 8/17

8:55 am-4:40 pm

2 stops21h 45m

Helsinki-Vantaa

Thu 9/18

7:10 am-6:52 pm

2 stops21h 42m

$595

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Wed 9/17

2:40 pm-12:15 am

1 stop23h 35m

Helsinki-Vantaa

Mon 9/22

1:35 pm-12:40 pm

1 stop33h 05m

$612

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 8/17

3:05 pm-11:20 pm

1 stop22h 15m

Helsinki-Vantaa

Wed 9/17

6:40 am-4:04 pm

2 stops19h 24m

$614

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 8/17

7:40 pm-10:35 am

1 stop28h 55m

Helsinki-Vantaa

Tue 9/2

9:00 pm-4:30 pm

1 stop29h 30m

$633

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Thu 8/14

11:40 am-4:40 pm

2 stops19h 00m

Helsinki-Vantaa

Wed 9/17

6:10 am-11:11 am

2 stops39h 01m

$644

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Mon 9/15

10:08 am-6:20 pm

3 stops22h 12m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 15 results
1
2

Best time to book a flight from San Francisco to Helsinki

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

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

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

The best time to book flights from San Francisco to Helsinki is 42 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from San Francisco to Helsinki (average of $444). Flying from San Francisco to Helsinki in June is currently the most expensive (average of $1,081). 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 SFO to HEL?

Find hourly flight availability from San Francisco to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 11, 2025.

One of the essential ways to save on airfare from San Francisco to Helsinki is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 18% on airfare.

What is the cheapest day to fly from San Francisco to Helsinki?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Helsinki. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Helsinki flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Helsinki

Get insights into the airlines that provide service to Helsinki. 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 Helsinki. Reviews last updated July 11, 2025.
Read through reviews of airlines operating flights from San Francisco to Helsinki, such as Delta, Finnair, and Air France. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,951 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,951 reviews
Delta
8.0
Very good
7,951 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,312 reviews
Delta
8.0
Very good
7,951 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.5
Good
1,467 reviews
Delta
8.0
Very good
7,951 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,846 reviews
Delta
8.0
Very good
7,951 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Turkish Airlines
7.3
Good
3,896 reviews
Delta
8.0
Very good
7,951 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Helsinki. 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 San Francisco to Helsinki round-trip?

    Flying on Finnair is currently your cheapest option to Helsinki, with prices starting at $570. Additional round-trip tickets that might be worth considering are offered by Turkish Airlines and United Airlines, with the lowest prices starting at $584 and $594, respectively. These flights start at 38% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from San Francisco to Helsinki one-way?

    One-way options have recently been found by users for as low as $449 on Icelandair. Other airlines that offer cheap prices include Air Canada from $478 and Lufthansa from $479 one-way.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from San Francisco to Helsinki (average of $444). Flying from San Francisco to Helsinki in June is currently the most expensive (average of $1,081). 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
Vantaa
Lahti

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.

Alternative routes for San Francisco to Helsinki

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Helsinki flights
San Jose to Helsinki flights
Burbank to Helsinki flights
Santa Ana to Helsinki flights
Ontario to Helsinki flights
Oakland to Helsinki flights
San Diego to Helsinki flights
Las Vegas to Helsinki flights
Sacramento to Helsinki flights
Los Angeles to Rovaniemi flights
San Francisco to Rovaniemi flights
San Francisco to Turku flights
San Jose to Oulu flights
San Francisco to Kokkola flights
San Francisco to Kemi flights
San Francisco to Oulu flights
Los Angeles to Ivalo flights
San Francisco to Tampere flights
San Jose to Rovaniemi flights
San Francisco to Kittilä flights
San Francisco to Kajaani flights
San Francisco to Ivalo flights
Oakland to Rovaniemi flights
Los Angeles to Kittilä flights
Los Angeles to Kuusamo flights
San Francisco to Kuopio flights
Los Angeles to Kemi flights
Los Angeles to Turku flights
Los Angeles to Tampere flights
Reno to Helsinki flights

Top 10 airlines flying from San Francisco to Helsinki

Discover the top 10 airlines that operate flights from San Francisco to Helsinki. 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$447Average$773FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$526Average$803FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$551Average$1,002FlexibilityNo cancel feeOn-time70%
FinnairCheapest$554Average$876FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$567Average$1,023FlexibilityNo cancel feeOn-time71%
Brussels AirlinesCheapest$578Average$859FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$582Average$981FlexibilityNo cancel feeOn-time69%
DeltaCheapest$582Average$981FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$583Average$882FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$597Average$652FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.