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Cheap flights from Seattle to Oslo from C$ 530

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
17 Jun — 24 Jun1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo are usually found in November or January, booked 79 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 12 June 2025.

Round-trip from

C$ 734

One-way from

C$ 530

Popular in

June

Cheapest in

November

Average price

C$ 1,179
United Airlines
  • United Airlines
  • 11/8-21/8
  • 3 total stops
  • 41h 15m total
  • Seattle to Oslo
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Delta
  • Delta
  • 3/12
  • 1 total stop
  • 16h 30m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 224 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 34 potential savings vs. average RT price).
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Average for round-trip flights in June 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 12 June 2025.

Mon 11/812:20 a.m.SEA - OSL
2 stops26h 55mUnited Airlines
Thu 21/86:35 a.m.OSL - SEA
1 stop14h 20mUnited Airlines
Deal found 12/6C$ 734
Tue 9/91:30 p.m.SEA - OSL
1 stop24h 55mBritish Airways
Wed 1/107:40 a.m.OSL - SEA
2 stops21h 29mBritish Airways
Deal found 10/6C$ 740
Mon 21/75:35 p.m.SEA - OSL
1 stop30h 10mDelta
Tue 26/86:30 a.m.OSL - SEA
2 stops18h 30mDelta
Deal found 11/6C$ 741
Thu 4/1211:05 a.m.SEA - OSL
2 stops21h 45mLufthansa
Mon 15/126:15 a.m.OSL - SEA
1 stop14h 55mLufthansa
Deal found 10/6C$ 742
Wed 10/94:00 p.m.SEA - OSL
1 stop21h 35mScandinavian Airlines
Sun 12/106:00 p.m.OSL - SEA
2 stops37h 23mScandinavian Airlines
Deal found 10/6C$ 745
Sun 10/85:40 p.m.SEA - OSL
1 stop17h 05mFinnair
Sat 23/88:35 a.m.OSL - SEA
2 stops24h 05mFinnair
Deal found 10/6C$ 749
Fri 24/101:45 p.m.SEA - OSL
2 stops25h 10mSWISS
Mon 10/111:00 p.m.OSL - SEA
2 stops40h 51mSWISS
Deal found 11/6C$ 778
Thu 31/72:05 p.m.SEA - OSL
1 stop13h 25mKLM
Tue 12/85:20 p.m.OSL - SEA
1 stop27h 15mKLM
Deal found 12/6C$ 834
Tue 1/77:00 p.m.SEA - OSL
1 stop11h 25mIcelandair
Wed 16/74:30 p.m.OSL - SEA
1 stop13h 10mIcelandair
Deal found 12/6C$ 868
Tue 4/111:24 a.m.SEA - OSL
2 stops36h 16mMultiple Airlines
Tue 18/117:15 a.m.OSL - SEA
2 stops23h 00mMultiple Airlines
Deal found 9/6C$ 1,002

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 12 June 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

Mon 11/8

12:20 a.m.-12:15 p.m.

2 stops26h 55m

Oslo Gardermoen

Thu 21/8

6:35 a.m.-11:55 a.m.

1 stop14h 20m

C$ 734

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 9/9

1:30 p.m.-11:25 p.m.

1 stop24h 55m

Oslo Gardermoen

Wed 1/10

7:40 a.m.-8:09 p.m.

2 stops21h 29m

C$ 740

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 21/7

5:35 p.m.-8:45 a.m.

1 stop30h 10m

Oslo Gardermoen

Tue 26/8

6:30 a.m.-4:00 p.m.

2 stops18h 30m

C$ 741

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 4/12

11:05 a.m.-5:50 p.m.

2 stops21h 45m

Oslo Gardermoen

Mon 15/12

6:15 a.m.-12:10 p.m.

1 stop14h 55m

C$ 742

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 10/9

4:00 p.m.-10:35 p.m.

1 stop21h 35m

Oslo Gardermoen

Sun 12/10

6:00 p.m.-10:23 p.m.

2 stops37h 23m

C$ 745

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 10/8

5:40 p.m.-7:45 p.m.

1 stop17h 05m

Oslo Gardermoen

Sat 23/8

8:35 a.m.-11:40 p.m.

2 stops24h 05m

C$ 749

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 24/10

1:45 p.m.-11:55 p.m.

2 stops25h 10m

Oslo Gardermoen

Mon 10/11

1:00 p.m.-8:51 p.m.

2 stops40h 51m

C$ 778

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 31/7

2:05 p.m.-12:30 p.m.

1 stop13h 25m

Oslo Gardermoen

Tue 12/8

5:20 p.m.-11:35 a.m.

1 stop27h 15m

C$ 834

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 1/7

7:00 p.m.-3:25 p.m.

1 stop11h 25m

Oslo Gardermoen

Wed 16/7

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

1 stop13h 10m

C$ 868

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 4/11

1:24 a.m.-10:40 p.m.

2 stops36h 16m

Oslo Gardermoen

Tue 18/11

7:15 a.m.-9:15 p.m.

2 stops23h 00m

C$ 1,002

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

Showing 1-10 of 16 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 9 June 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 79 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 12 June 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 12 June 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from Seattle to Oslo to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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. 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.

  • 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$ 734. Other airlines that can offer you cheap pricing are British Airways, from C$ 740, and Delta, from C$ 741. United Airlines is priced at 19% 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 Delta, which is currently one of the cheapest options available, starting at C$ 530. SWISS flights start at C$ 552 while deals on United Airlines start at C$ 566 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

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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 2 airlines flying from Seattle to Oslo

Discover the top 2 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 12 June 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 638AverageC$ 928FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapestC$ 876AverageC$ 880FlexibilityNo 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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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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