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Cheap flights from Seattle to Oslo from C$ 596

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
27 Apr — 4 May1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo are usually found in November or January, booked 43 days in advance, depart on a Monday or Wednesday and return on a Monday

Cheap flight deals from Seattle to Oslo

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Oslo (OS1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 22 April 2025.

Round-trip from

C$ 679

One-way from

C$ 596

Popular in

June

Cheapest in

November

Average price

C$ 806
Icelandair
  • Icelandair
  • 2/9-13/9
  • 2 total stops
  • 27h 50m total
  • Seattle to Oslo
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United Airlines
  • United Airlines
  • 9/9
  • 3 total stops
  • 26h 00m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (C$ 363 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 67 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Seattle to Oslo

Cheapest flights from Seattle to Oslo
Explore the most affordable flight options available from Seattle to Oslo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 April 2025.

Tue 2/93:45 p.m.SEA - OSL
1 stop14h 40mIcelandair
Sun 7/94:30 p.m.OSL - SEA
1 stop13h 10mIcelandair
Deal found 22/4C$ 679
Mon 11/84:25 p.m.SEA - OSL
1 stop22h 30mSWISS
Mon 25/85:40 a.m.OSL - SEA
2 stops26h 29mSWISS
Deal found 21/4C$ 760
Mon 11/85:23 p.m.SEA - OSL
2 stops38h 52mUnited Airlines
Mon 25/87:15 a.m.OSL - SEA
2 stops24h 00mUnited Airlines
Deal found 21/4C$ 788
Wed 3/91:30 p.m.SEA - OSL
2 stops20h 05mDelta
Wed 10/96:00 a.m.OSL - SEA
1 stop20h 40mDelta
Deal found 22/4C$ 813
Sun 10/84:00 p.m.SEA - OSL
1 stop11h 55mScandinavian Airlines
Sun 17/88:55 p.m.OSL - SEA
1 stop25h 55mScandinavian Airlines
Deal found 22/4C$ 820
Mon 1/98:20 p.m.SEA - OSL
1 stop13h 20mBritish Airways
Thu 11/911:40 a.m.OSL - SEA
1 stop15h 40mBritish Airways
Deal found 22/4C$ 867
Thu 21/82:20 p.m.SEA - OSL
2 stops22h 50mLufthansa
Sun 31/86:50 a.m.OSL - SEA
1 stop14h 05mLufthansa
Deal found 22/4C$ 882
Fri 23/52:15 p.m.SEA - OSL
2 stops18h 50mMultiple Airlines
Sat 7/65:40 a.m.OSL - SEA
1 stop18h 10mMultiple Airlines
Deal found 22/4C$ 1,070
Thu 26/62:10 p.m.SEA - OSL
1 stop13h 20mKLM
Fri 11/76:30 a.m.OSL - SEA
1 stop18h 20mKLM
Deal found 22/4C$ 1,550

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Oslo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 22 April 2025.
Use the filters below to find and compare flights from Seattle to Oslo that are best for you.

Fly from

Seattle

Fly to

Oslo

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 2/9

3:45 p.m.-3:25 p.m.

1 stop14h 40m

Oslo Gardermoen

Sat 13/9

4:30 p.m.-8:40 p.m.

1 stop13h 10m

C$ 679

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 11/8

4:25 p.m.-11:55 p.m.

1 stop22h 30m

Oslo Gardermoen

Mon 25/8

5:40 a.m.-11:09 p.m.

2 stops26h 29m

C$ 760

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 11/8

5:23 p.m.-5:15 p.m.

2 stops38h 52m

Oslo Gardermoen

Mon 25/8

7:15 a.m.-10:15 p.m.

2 stops24h 00m

C$ 788

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 3/9

1:30 p.m.-6:35 p.m.

2 stops20h 05m

Oslo Gardermoen

Wed 10/9

6:00 a.m.-5:40 p.m.

1 stop20h 40m

C$ 813

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 10/8

4:00 p.m.-12:55 p.m.

1 stop11h 55m

Oslo Gardermoen

Sun 17/8

8:55 p.m.-1:50 p.m.

1 stop25h 55m

C$ 820

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 1/9

8:20 p.m.-6:40 p.m.

1 stop13h 20m

Oslo Gardermoen

Thu 11/9

11:40 a.m.-6:20 p.m.

1 stop15h 40m

C$ 867

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 21/8

2:20 p.m.-10:10 p.m.

2 stops22h 50m

Oslo Gardermoen

Sun 31/8

6:50 a.m.-11:55 a.m.

1 stop14h 05m

C$ 882

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 23/5

2:15 p.m.-6:05 p.m.

2 stops18h 50m

Oslo Gardermoen

Sat 7/6

5:40 a.m.-2:50 p.m.

1 stop18h 10m

C$ 1,070

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 26/6

2:10 p.m.-12:30 p.m.

1 stop13h 20m

Oslo Gardermoen

Fri 11/7

6:30 a.m.-3:50 p.m.

1 stop18h 20m

C$ 1,550

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 15/10

11:30 a.m.-7:15 p.m.

3 stops22h 45m

Oslo Gardermoen

Mon 20/10

12:50 p.m.-10:19 a.m.

2 stops30h 29m

C$ 2,322

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/4

Showing 1-10 of 17 results
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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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Oslo. Price data was last updated on 18 April 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 43 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?

Currently, April is the cheapest month in which you can book a flight from Seattle to Oslo (average of C$ 666). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 949). 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.

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

Find hourly flight availability from Seattle to Oslo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 April 2025.

It’s typically best to fly out from Seattle to Oslo in the afternoon. Doing so could potentially save you 32% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in Oslo by month

Plan your trip to Oslo by taking into account the average rainfall totals by month.

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.

Temperature in Oslo by month

Plan your trip to Oslo by taking into account the average temperature totals by month.

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).

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 22 April 2025.
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,331 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,582 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,683 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Scandinavian Airlines
7.3
Good
1,342 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Oslo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    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. 3 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.

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

    Cheapflights users have booked flights from Seattle to Oslo round-trip from C$ 679. Other airlines that can offer you cheap pricing are SWISS, from C$ 760, and United Airlines, from C$ 788. Icelandair is priced at 31% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at C$ 596. Icelandair flights start at C$ 597 while deals on Delta start at C$ 647 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, April is the cheapest month in which you can book a flight from Seattle to Oslo (average of C$ 666). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 949). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Oslo

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Oslo Gardermoen flights

Top 3 airlines flying from Seattle to Oslo

Discover the top 3 airlines that operate flights from Seattle to Oslo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 22 April 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 645AverageC$ 938FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 836AverageC$ 886FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapestC$ 886AverageC$ 932FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

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

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.

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

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.

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

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.

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