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 is the cheapest time of day to fly from PHL to OUL?

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

Most accurate provider : When it comes to deals on Philadelphia-Oulu flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Oulu flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Oulu flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Philadelphia-Oulu flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Oulu flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Philadelphia to Oulu?

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

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

Yes. Cheapflights offers flight deals from Philadelphia 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.

Find Flights from Philadelphia to Oulu

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1. Tell us where you want to go

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Cheap flight deals from Philadelphia to Oulu

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 1 star

Provider with most accurate pricing for Philadelphia-Oulu flight deals.

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Provider most trusted by Cheapflights users for Philadelphia-Oulu flights.

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Most accurate provider: When it comes to deals on Philadelphia-Oulu flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Oulu flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Oulu flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Philadelphia-Oulu flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Oulu flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Oulu

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

Reviews of airlines servicing Oulu

Peruse reviews from past customers who have flown with Finnair from Philadelphia to Oulu to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Finnair

7.6

Good

1,333 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

Finnair

7.6

Good

1,333 reviews

Finnair

7.6

Good

1,333 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Sep 2025

WAW - HEL

Related info for your journey

Can I find deals for flights from Philadelphia to Oulu that include hotel bookings?
Yes. In addition to deals on Philadelphia to Oulu flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Philadelphia to Oulu?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Oulu.
Can I find deals for business class flights from Philadelphia to Oulu?
Yes. Cheapflights offers flight deals from Philadelphia 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.

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Philadelphia to Oulu

Top airline flying from Philadelphia to Oulu

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest$643	Average$1,271	FlexibilityNo cancel fee	On-time76%

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Find cheap flights from Philadelphia 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 Philadelphia to Oulu

Most accurate provider

Most trusted provider

Best time to book a flight from Philadelphia to Oulu

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

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 October 28, 2025.

Peruse reviews from past customers who have flown with Finnair from Philadelphia to Oulu to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

How can I find direct flights from Philadelphia to Oulu?

Can I find deals for business class flights from Philadelphia 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 Philadelphia to Oulu

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

Complete your trip

Complete your trip to Oulu by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Philadelphia to Oulu by cabin class

Find flights from Philadelphia to Oulu, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Philadelphia and Oulu flights

Browse other Philadelphia and Oulu flight options. Last updated on October 28, 2025.

Other flights from Philadelphia

Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on October 28, 2025.

Popular flight searches

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Top airline flying from Philadelphia to Oulu

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Cheap flights from Philadelphia (PHL) to Oulu (OUL)

Find cheap flights from Philadelphia 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 Philadelphia to Oulu

Most accurate provider

Most trusted provider

Best time to book a flight from Philadelphia to Oulu

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

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 October 28, 2025.

Peruse reviews from past customers who have flown with Finnair from Philadelphia to Oulu to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

How can I find direct flights from Philadelphia to Oulu?

Can I find deals for business class flights from Philadelphia 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 Philadelphia to Oulu

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

Top airline flying from Philadelphia to Oulu

100% Free

Book with Flexibility

Travel Smart