$284 Find Cheap Flights from Seattle to Helsinki - Compare and Save

Four cabin classes are available on flights from Seattle to Helsinki:

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

A nonstop flight from Seattle to Helsinki takes 00m, covering 4,764 miles.

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 $737 to $1,163, with an average of $941 over the past 12 months. Anything below $737 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 7% above the $941 route average. Book 25 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $650 round-trip via Kastrup Copenhagen (CPH), compared to $1,193 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $75–$75 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 lower than usual. Average one-way flight prices are about $539, which is 10% below the typical average for this route.

Helsinki-Vantaa Airport (HEL) hosts 5 major car rental companies, with daily rates averaging $51 for economy cars. Top options include:

• ADDCAR RENTAL
• GREEN MOTION
• 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 25% on flights from Seattle to Helsinki. Tuesday is the cheapest departure day at $855 round-trip on average, while Saturday is the most expensive at $1,135, a difference of $280.

KAYAK's flexible dates feature shows options up to 3 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 18m, 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, Helsingin päärautatieasema and Esplanadi park. 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 cabin bag and a checked bag in Economy Class
• Alaska Airlines: a cabin bag and a checked bag in Economy Class
• British Airways: a cabin bag and a checked bag in Premium Economy Class

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