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Only Finnair operates flights between Helsinki and Seattle.

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

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
• Iberia: a cabin bag and a checked bag in Economy Class

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

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

• Economy Class
• Premium Economy Class
• Business Class

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 $1,036 for nonstop.

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.

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

• Reykjavik Keflavik Intl (KEF) - 56% of one-stop connections
• Amsterdam Schiphol (AMS) - 32% of one-stop connections
• Kastrup Copenhagen (CPH) - 3% of one-stop connections
• Dallas/Fort Worth (DFW) - 3% of one-stop connections

Reykjavik Keflavik Intl (KEF) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 26% on the Helsinki to Seattle route. Thursday is the cheapest departure day at $875 round-trip on average, while Sunday is the most expensive at $1,168, a difference of $293. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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, 40% of flights were delayed in the past 3 months, with delays averaging 1 hour 38 minutes.

Some of the most popular sights in Seattle are Pike Place Market, Pier 66 and Lumen Field. These are among the most viewed places in Seattle on KAYAK.

These are the earliest and latest flight times available from Helsinki to Seattle:

• Earliest: departs at 4:20 pm and lands at 2:00 am
• Latest: departs at 4:20 pm and lands at 2:00 am.

The flight takes about 9h 40m.

Last-minute fares on this route - booked within 2 weeks of departure - run 15% above the route average of $980. Book 17 weeks before departure for the lowest fares.

A nonstop flight from Helsinki to Seattle takes 9h 40m, 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.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $663 to $2,743. 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 $520, which is 40% below the typical average for this route.

Finnair is the only airline operating Helsinki to Seattle flights. 60% of its flights are on time.

Afternoon flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Kastrup Copenhagen (CPH) gives the shortest average 1-stop total travel time at 12h 56m, compared with 13h 56m via Reykjavik Keflavik Intl (KEF) and 15h 14m 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.

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
· Dollar

Round-trip flights from Helsinki to Seattle range from $853 to $1,132, with an average of $980 over the past 12 months. Anything below $853 counts as a good deal.