$260 Find Cheap Flights from Seattle to Helsinki - Compare and Save

Among airlines operating Seattle to Helsinki flights:

• Alaska Airlines: offers free seat selection

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

Only Finnair operates flights between Seattle and Helsinki.

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

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
• British Airways: a cabin bag and a checked bag in Economy Class
• Alaska Airlines: 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.

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

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

Prices vary by airline.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $652 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–$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 Seattle to Helsinki most commonly connect through:

• Reykjavik Keflavik Intl (KEF) - 69% of one-stop connections
• Kastrup Copenhagen (CPH) - 15% of one-stop connections
• Amsterdam Schiphol (AMS) - 11% of one-stop connections
• Frankfurt am Main (FRA) - 2% 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 32% on the Seattle to Helsinki route. Tuesday is the cheapest departure day at $767 round-trip on average, while Saturday is the most expensive at $1,117, a difference of $350. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

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

• Earliest: departs at 5:40 pm and lands at 3:10 am
• Latest: departs at 5:40 pm and lands at 3:10 am.

The flight takes about 9h 30m.

Last-minute fares on this route - booked within 2 weeks of departure - run 6% above the route average of $909. Book 13 weeks before departure for the lowest fares.

A nonstop flight from Seattle to Helsinki takes 9h 30m, 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.

One-way fares from Seattle to Helsinki are currently lower than usual. Average one-way flight prices are about $503, which is 17% below the typical average for this route.

Flying via Reykjavik Keflavik Intl (KEF) gives the shortest average 1-stop total travel time at 13h 18m, compared with 14h 11m via Munich Franz Josef Strauss (MUC) and 15h 33m via Chicago O'Hare Intl (ORD).

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.

Helsinki-Vantaa Airport (HEL) hosts 5 major car rental companies, with daily rates starting from around $3 for economy cars. Top options include:
• ADDCAR RENTAL
• GREEN MOTION
• Alamo
• Sixt
• Europcar

Round-trip flights from Seattle to Helsinki range from $694 to $1,100, with an average of $909 over the past 12 months. Anything below $694 counts as a good deal.