In terms of precipitation, rainfall in Oulu ranges from 0.4 - 2.4 inches per month. August is typically the wettest month, when rainfall can reach 2.4 in. April is typically the driest time to visit Oulu when rainfall is around 0.4 in.

If weather is an important factor for your trip to Oulu, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 F).

What are the most popular routes from California to Oulu?

The most popular flight routes from California to Oulu are San Francisco - Oulu, San Jose - Oulu and Oakland - Oulu.

What airport do you fly into for flights to Oulu from California?

Oulu (OUL) is the airport you will fly into if you book a flight from California to Oulu. It is only a 6.5 mi journey from Oulu (OUL) to Oulu’s city center.

Can I find deals for flights from California to Oulu that include hotel bookings?

Yes. In addition to deals on California to Oulu flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from California to Oulu?

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

Can I find deals for business class flights from California to Oulu?

Yes. Cheapflights offers flight deals from California to Oulu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$912+ Flights from California to Oulu

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from California to Oulu 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.

Cheap flight deals from California to Oulu

Round-trip from	$912 (KAYAK)

From California to Oulu

Search Deals

Find flight deals from California to Oulu

Cheapest flights from California to Oulu
Explore the most affordable flight options available from California to Oulu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

mar. 9/238:00 amSJC - OUL

3 stops22h 55mBritish Airways

mié. 10/15:50 amOUL - SJC

2 stops25h 18mBritish Airways

Deal found 7/31

$912

mar. 9/238:00 amSJC - OUL

2 stops21h 05mFinnair

mié. 10/18:40 amOUL - SJC

2 stops22h 28mFinnair

Deal found 7/31

$926

mar. 9/238:00 amSFO - OUL

2 stops21h 05mFinnair

mié. 10/15:50 amOUL - SFO

2 stops28h 09mFinnair

Deal found 7/31

$972

dom. 8/1712:40 pmSFO - OUL

2 stops39h 55mTurkish Airlines

dom. 8/245:35 pmOUL - SFO

2 stops33h 05mTurkish Airlines

Deal found 7/29

$1,402

Best flights from California to Oulu
Discover carefully curated flight deals from California to Oulu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 31, 2025.

mar. 9/238:00 amSJC - OUL

3 stops22h 55mBritish Airways

mié. 10/15:50 amOUL - SJC

2 stops25h 18mBritish Airways

Deal found 7/31

$912

mar. 9/238:00 amSJC - OUL

2 stops21h 05mFinnair

mié. 10/18:40 amOUL - SJC

2 stops22h 28mFinnair

Deal found 7/31

$926

dom. 8/1712:40 pmSFO - OUL

2 stops39h 55mTurkish Airlines

dom. 8/245:35 pmOUL - SFO

2 stops33h 05mTurkish Airlines

Deal found 7/29

$1,402

mar. 9/238:00 amSFO - OUL

2 stops21h 05mFinnair

mié. 10/15:50 amOUL - SFO

2 stops28h 09mFinnair

Deal found 7/31

$972

Last-minute flights from California to Oulu
Discover last-minute flight deals from California to Oulu. Data last updated julio 31, 2025 and is based on user searches.

dom. 8/1712:40 pmSFO - OUL

2 stops39h 55mTurkish Airlines

dom. 8/245:35 pmOUL - SFO

2 stops33h 05mTurkish Airlines

Deal found 7/29

$1,402

Fly from

Fly to

Route

Depart

Return

Price

San JoseOulu

SJC - OUL

SJCOUL

San Jose

mar. 9/23

8:00 am-4:55 pm

3 stops22h 55m

Oulu

mié. 10/1

5:50 am-9:08 pm

2 stops25h 18m

$912

San JoseOulu

SJC - OUL

SJCOUL

San Jose

mar. 9/23

8:00 am-3:05 pm

2 stops21h 05m

Oulu

mié. 10/1

8:40 am-9:08 pm

2 stops22h 28m

$926

San FranciscoOulu

SFO - OUL

SFOOUL

San Francisco

mar. 9/23

8:00 am-3:05 pm

2 stops21h 05m

Oulu

mié. 10/1

5:50 am-11:59 pm

2 stops28h 09m

$972

San FranciscoOulu

SFO - OUL

SFOOUL

San Francisco

dom. 8/17

12:40 pm-2:35 pm

2 stops39h 55m

Oulu

dom. 8/24

5:35 pm-4:40 pm

2 stops33h 05m

$1,402

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Best time to book a flight from California to Oulu

Have a flexible travel schedule? Discover the best time to fly to Oulu from California 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 California to Oulu

What is the cheapest time of day to fly from CA to OUL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to Oulu as you normally would.

Reviews of airlines servicing Oulu

Read reviews from past customers who have flown Finnair, Turkish Airlines, and British Airways from California to Oulu. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Finnair

7.6

Good

1,316 reviews

Reviews

1 / 20

6.0

Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.

Finnair

7.6

Good

1,316 reviews

Finnair

7.6

Good

1,316 reviews

Reviews

1 / 20

6.0

Good

Rowland,Dec 2024

FRA - HEL

Turkish Airlines

7.3

Good

3,933 reviews

Finnair

7.6

Good

1,316 reviews

Reviews

1 / 20

6.0

Good

Rowland,Dec 2024

FRA - HEL

British Airways

6.6

Okay

7,222 reviews

Finnair

7.6

Good

1,316 reviews

Reviews

1 / 20

6.0

Good

Rowland,Dec 2024

FRA - HEL

Related info for your journey

What airport do you fly into for flights to Oulu from California?
Oulu (OUL) is the airport you will fly into if you book a flight from California to Oulu. It is only a 6.5 mi journey from Oulu (OUL) to Oulu’s city center.
What are the most popular routes from California to Oulu?
The most popular flight routes from California to Oulu are San Francisco - Oulu, San Jose - Oulu and Oakland - Oulu.
Can I find deals for flights from California to Oulu that include hotel bookings?
Yes. In addition to deals on California to Oulu flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from California to Oulu?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Oulu.
Can I find deals for business class flights from California to Oulu?
Yes. Cheapflights offers flight deals from California to Oulu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for California to Oulu

Dallas/Fort Worth to Helsinki flights

John F Kennedy Intl to Helsinki flights

Columbus to Helsinki flights

Love Field to Helsinki flights

Newark to Helsinki flights

LaGuardia to Helsinki flights

Dulles Intl to Helsinki flights

Boston to Helsinki flights

Los Angeles to Helsinki flights

Baltimore to Helsinki flights

Seattle to Helsinki flights

O'Hare Intl to Helsinki flights

San Francisco to Helsinki flights

Reagan-National to Helsinki flights

Atlanta to Helsinki flights

Miami to Helsinki flights

Denver to Helsinki flights

Midway to Helsinki flights

Orlando to Helsinki flights

Minneapolis to Helsinki flights

Tucson to Helsinki flights

Kansas City to Helsinki flights

Charlotte to Helsinki flights

Austin to Helsinki flights

Baltimore to Ivalo flights

Hobby to Helsinki flights

Dulles Intl to Ivalo flights

Ontario to Helsinki flights

Sacramento to Helsinki flights

Detroit to Helsinki flights

John F Kennedy Intl to Rovaniemi flights

San Jose to Helsinki flights

George Bush Intcntl to Helsinki flights

Oakland to Helsinki flights

Philadelphia to Helsinki flights

San Diego to Helsinki flights

Fort Lauderdale to Helsinki flights

Portland to Helsinki flights

Dulles Intl to Rovaniemi flights

Raleigh to Helsinki flights

Santa Ana to Helsinki flights

Burbank to Helsinki flights

Baltimore to Oulu flights

Dulles Intl to Oulu flights

Indianapolis to Helsinki flights

West Palm Beach to Helsinki flights

Newark to Rovaniemi flights

Las Vegas to Helsinki flights

Salt Lake City to Helsinki flights

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.

$912+ Cheap flights from California to Oulu (OUL)

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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from California to Oulu with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from California to Oulu

Keep the following information in mind while searching for California to Oulu flight deals. Data was last updated julio 31, 2025.

Round-trip from

Find flight deals from California to Oulu

Cheapest flights from California to OuluExplore the most affordable flight options available from California to Oulu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

Explore the most affordable flight options available from California to Oulu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from California to Oulu that are best for you.

Best time to book a flight from California to Oulu

Have a flexible travel schedule? Discover the best time to fly to Oulu from California with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from California to Oulu

What is the cheapest time of day to fly from CA to OUL?

Find hourly flight availability from California to Oulu. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 31, 2025.

Reviews of airlines servicing Oulu

Get insights into the airlines that provide service to Oulu. 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 Oulu. Reviews last updated julio 31, 2025.

Read reviews from past customers who have flown Finnair, Turkish Airlines, and British Airways from California to Oulu. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from California to Oulu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Oulu from California?

What are the most popular routes from California to Oulu?

Can I find deals for flights from California to Oulu that include hotel bookings?

How can I find direct flights from California to Oulu?

Can I find deals for business class flights from California to Oulu?

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 California to Oulu

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from California to Oulu
Explore the most affordable flight options available from California to Oulu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.