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Oslo

Cheap flights from Seattle (SEA) to Oslo

SEA — OSL
Oct 29 — Nov 51
Thu 10/29
Thu 11/5
1 adult, Economy
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Find flight deals from Seattle to Oslo

Popular in

December

Cheapest in

January

Average price

$641
High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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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.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Seattle to Oslo

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

The price you pay for your flight from Seattle to Oslo may vary depending on when you book. For the best chance of a lower fare, look to book 81 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Oslo (average of $423). Flying from Seattle to Oslo in December is currently the most expensive (average of $776). 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.

Reviews of airlines servicing Oslo

See what other customers who have flown with KLM,Delta, andScandinavian Airlines from Seattle to Oslo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,578 reviews

Entertainment

7.2

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
KLM
7.8
Good
1,578 reviews
KLM
7.8
Good
1,578 reviews

Entertainment

7.2

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
Delta
7.8
Good
8,610 reviews
KLM
7.8
Good
1,578 reviews

Entertainment

7.2

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
Scandinavian Airlines
7.4
Good
2,001 reviews
KLM
7.8
Good
1,578 reviews

Entertainment

7.2

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
Icelandair
6.9
Okay
755 reviews
KLM
7.8
Good
1,578 reviews

Entertainment

7.2

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
Lufthansa
6.8
Okay
8,251 reviews
KLM
7.8
Good
1,578 reviews

Entertainment

7.2

Boarding

7.8

Food

7.3

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Related info for your journey

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

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Oslo. You should not have trouble finding flights to Oslo from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Oslo per day. You should also have plenty of airline options to choose from since 7 airlines have flights from the Seattle airport to Oslo. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

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

    According to our current data, British Airways ($351), Icelandair ($394), and Scandinavian Airlines ($426) offers the cheapest pricing from Seattle to Oslo. British Airways is 39% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Oslo one-way?

    To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at $225. Delta flights start at $226 while deals on Icelandair start at $238 one-way.

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

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

  • How can I find direct flights from Seattle to Oslo?

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

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

    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.

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to Oslo (average of $423). Flying from Seattle to Oslo in December is currently the most expensive (average of $776). 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.

See more FAQs

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Alternative routes for Seattle to Oslo

Seattle to Oslo Gardermoen flights
Seattle to Stavanger flights
Seattle to Bodø flights
Portland to Stavanger flights

Top 7 airlines flying from Seattle to Oslo

AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$351Average$537FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$394Average$579FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$426Average$667FlexibilityNo cancel feeOn-time77%
DeltaCheapest$468Average$686FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$491Average$543FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$493Average$640FlexibilityNo cancel feeOn-time76%
KLMCheapest$522Average$648FlexibilityNo cancel feeOn-time75%

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