Question 1

What are the cheapest airlines flying from Seattle to Oslo round-trip?

Accepted Answer

Cheapflights users have booked flights from Seattle to Oslo round-trip from C$ 644. Another airline that can offer you cheap pricing is Lufthansa. Icelandair is priced at 22% lower than the current average price of a flight leaving 3 months from now.

Question 2

How far ahead should I book a flight from Seattle to Oslo?

Accepted Answer

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Question 3

What is the cheapest month to book a flight from Seattle to Oslo?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Seattle to Oslo (average of C$ 676). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 1,138). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 4

E

Accepted Answer

In terms of precipitation, rainfall in Oslo ranges from 40.0 - 90.0 mm per month. August is typically the wettest month, when rainfall can reach 90.0 mm. February is typically the driest time to visit Oslo when rainfall is around 40.0 mm.

Question 5

E

Accepted Answer

If weather is an important factor for your trip to Oslo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -3.0 C).

Question 6

What is the cheapest time of day to fly from SEA to OSL?

Accepted Answer

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Oslo as you normally would.

Question 7

What airport do you fly from for flights from Seattle to Oslo?

Accepted Answer

Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Oslo. 2 airlines have flights from Seattle/Tacoma Intl to Oslo on a regular basis. Booking flights from Seattle/Tacoma Intl to Oslo should not be difficult; the airport handles an average of 0 outbound flights to Oslo per day.

Question 8

Can I find deals for flights from Seattle to Oslo that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Seattle to Oslo flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 9

How can I find direct flights from Seattle to Oslo?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Oslo.

Question 10

Can I find deals for business class flights from Seattle to Oslo?

Accepted Answer

Yes. Cheapflights offers flight deals from Seattle to Oslo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 11

How does Cheapflights help users find flights from Seattle to Oslo?

Accepted Answer

Cheapflights helps you search for flights from Seattle to Oslo via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 12

Why should you use Cheapflights to find cheap flight tickets from Seattle to Oslo?

Accepted Answer

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Oslo for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Question 13

Can Cheapflights find flights from Seattle to Oslo with no change fees?

Accepted Answer

Yes, we can. To see specific flights from Seattle to Oslo with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Question 14

Can Cheapflights notify me if prices for flights from Seattle to Oslo become cheaper?

Accepted Answer

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Oslo from Seattle today and book when prices fit your budget.

Popular in	December
Cheapest in	January
Average price	C$ 750

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	CheapestC$ 644	AverageC$ 749	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Lufthansa	CheapestC$ 695	AverageC$ 717	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Cheap flights from Seattle to Oslo

Find flight deals from Seattle to Oslo

Popular in

Cheapest in

Average price

Best time to book a flight from Seattle to Oslo

Have a flexible travel schedule? Discover the best time to fly to Oslo from Seattle with our price prediction graph.

Cheapflights Insights

How far ahead should I book a flight from Seattle to Oslo?

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Oslo?

Reviews of airlines servicing Oslo

Get insights into the airlines that provide service to Oslo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Oslo. Reviews last updated 6 October 2026.

Read reviews from past customers who have flown Icelandair and Lufthansa from Seattle to Oslo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Seattle to Oslo?

What are the cheapest airlines flying from Seattle to Oslo round-trip?

Can I find deals for flights from Seattle to Oslo that include hotel bookings?

How can I find direct flights from Seattle to Oslo?

Can I find deals for business class flights from Seattle to Oslo?

What is the cheapest month to book a flight from Seattle to Oslo?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Oslo

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Oslo by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Seattle to Oslo by cabin class

Find flights from Seattle to Oslo, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Seattle and Oslo flights

Browse other Seattle and Oslo flight options. Last updated on 6 October 2026.

Other flights from Seattle

Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 6 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 2 airlines flying from Seattle to Oslo

Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to Oslo?

Why should you use Cheapflights to find cheap flight tickets from Seattle to Oslo?

Can Cheapflights find flights from Seattle to Oslo with no change fees?

Can Cheapflights notify me if prices for flights from Seattle to Oslo become cheaper?

100% Free

Book with Flexibility

Travel Smart