$459 Find Cheap Flights from Helsinki to Seattle - Compare and Save

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

A nonstop flight from Helsinki to Seattle 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 Helsinki to Seattle range from $863 to $1,145, with an average of $985 over the past 12 months. Anything below $863 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 25% above the $985 route average. Book 17 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $748 round-trip via Paris Charles de Gaulle (CDG), compared to $1,051 for nonstop.

Finnair is the only airline operating Helsinki to Seattle flights. 68% of its flights are on time.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $100–$100 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 British Airways and Finnair. Other aircraft seen on the route include Airbus A330 variants.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $655 to $2,713. That means the highest observed fare was about 4x higher than the lowest one.

One-way fares from Helsinki to Seattle are currently lower than usual. Average one-way flight prices are about $503, which is 44% below the typical average for this route.

Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:

• Fox
• Europcar
• Thrifty
• Budget
• Hertz

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

Afternoon flights have the fewest delays on this route.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Helsinki to Seattle route, 32% of flights were delayed in the past 3 months, with delays averaging 1h 47m.

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

• Reykjavik Keflavik Intl (KEF) - 59% of one-stop connections
• Amsterdam Schiphol (AMS) - 29% of one-stop connections
• Dallas/Fort Worth (DFW) - 3% of one-stop connections
• Kastrup Copenhagen (CPH) - 2% of one-stop connections

Yes. Flexible dates can save you up to 30% on flights from Helsinki to Seattle. Thursday is the cheapest departure day at $874 round-trip on average, while Sunday is the most expensive at $1,239, a difference of $365.

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 Kastrup Copenhagen (CPH) gives the shortest average 1-stop total travel time at 12h 56m, compared with 13h 32m via Reykjavik Keflavik Intl (KEF) and 14h 47m via Amsterdam Schiphol (AMS).

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

Some of the most popular sights in Seattle are Pike Place Market, Lumen Field and Space Needle. These are among the most viewed places in Seattle on KAYAK.

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

• British Airways: a cabin bag and a checked bag in Economy Class
• Finnair: a cabin bag and a checked bag in Economy Class
• American Airlines: a cabin bag in Economy Class class

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