C$ 516 Find Cheap Flights from Seattle to Helsinki – Compare and Save

Only Economy Class is available on flights from Seattle to Helsinki.

A direct flight from Seattle to Helsinki takes 00m, covering 12,340 km.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Round-trip flights from Seattle to Helsinki range from C$ 1,144 to C$ 1,658, with an average of C$ 1,356 over the past 12 months. Anything below C$ 1,144 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 7% above the C$ 1,356 route average. Book 21 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 908 round-trip via Kastrup Copenhagen (CPH), compared to C$ 1,668 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 105–C$ 105 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

The Airbus A330-300 family is used most often on this route, operated mainly by Finnair and Iberia. Other aircraft seen on the route include Airbus A330 variants.

One-way fares from Seattle to Helsinki are currently higher than usual. Average one-way flight prices are about C$ 1,031, which is 24% above the typical average for this route.

Helsinki-Vantaa Airport (HEL) hosts 5 major car rental companies, with daily rates averaging C$ 72 for economy cars. Top options include:

• GREEN MOTION
• ADDCAR RENTAL
• Alamo
• Sixt
• Europcar

Flights from Seattle to Helsinki usually depart from Seattle/Tacoma Intl (SEA) and arrive at Helsinki-Vantaa (HEL).

One-stop flights from Seattle to Helsinki most commonly connect through:

• Reykjavik Keflavik Intl (KEF) – 74% of one-stop connections
• Amsterdam Schiphol (AMS) – 10% of one-stop connections
• Kastrup Copenhagen (CPH) – 9% of one-stop connections
• Frankfurt am Main (FRA) – 3% of one-stop connections

Yes. Flexible dates can save you up to 27% on flights from Seattle to Helsinki. Tuesday is the cheapest departure day at C$ 1,195 round-trip on average, while Saturday is the most expensive at C$ 1,623, a difference of C$ 428.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

Flying via Reykjavik Keflavik Intl (KEF) gives the shortest average 1-stop total travel time at 13h 21m, compared with 15h 33m via Chicago O'Hare Intl (ORD) and 15h 49m via Paris Charles de Gaulle (CDG).

Helsinki is 10 hours ahead of Seattle (Eastern European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Helsinki are Helsinki Central Station Square and Kauppatori. These are among the most viewed places in Helsinki on KAYAK.

Among airlines operating Seattle to Helsinki flights:

• Finnair: offers free seat selection
• Alaska Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Finnair: a carry-on bag and a checked bag in Economy Class
• Alaska Airlines: a carry-on bag and a checked bag in Economy Class
• British Airways: a carry-on bag and a checked bag in Premium Economy Class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.