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Cheap flights from Seattle to Oslo from C$ 538

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
11 oct. — 18 oct.1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo are usually found in October or November, booked 76 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 11 septiembre 2025.

Round-trip from

C$ 581

One-way from

C$ 538

Popular in

June

Cheapest in

October

Average price

C$ 818
Icelandair
  • Icelandair
  • 5/12-9/12
  • 2 total stops
  • 24h 50m total
  • Seattle to Oslo
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Delta
  • Delta
  • 3/12
  • 1 total stop
  • 17h 00m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 234 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 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 11 septiembre 2025.

vie. 5/122:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
mar. 9/121:10 p.m.OSL - SEA
1 stop12h 50mIcelandair
Deal found 11/9C$ 581
mar. 2/122:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
jue. 11/121:10 p.m.OSL - SEA
1 stop12h 50mIcelandair
Deal found 11/9C$ 632
mié. 3/122:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
dom. 7/129:30 p.m.OSL - SEA
1 stop28h 30mIcelandair
Deal found 10/9C$ 633
lun. 8/126:50 p.m.SEA - OSL
1 stop18h 50mBritish Airways
mar. 23/127:20 a.m.OSL - SEA
1 stop18h 35mBritish Airways
Deal found 10/9C$ 662
mar. 2/121:40 p.m.SEA - OSL
1 stop17h 40mDelta
lun. 15/129:25 a.m.OSL - SEA
1 stop35h 25mDelta
Deal found 11/9C$ 687
mar. 28/1011:25 a.m.SEA - OSL
2 stops20h 55mDelta
vie. 7/116:25 a.m.OSL - SEA
1 stop15h 55mDelta
Deal found 11/9C$ 691
mar. 2/121:40 p.m.SEA - OSL
1 stop17h 40mDelta
mié. 10/126:25 a.m.OSL - SEA
2 stops24h 56mDelta
Deal found 11/9C$ 700
jue. 4/122:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
mar. 9/121:10 p.m.OSL - SEA
1 stop12h 50mIcelandair
Deal found 11/9C$ 701
lun. 8/122:05 p.m.SEA - OSL
1 stop17h 15mDelta
dom. 14/1212:40 p.m.OSL - SEA
1 stop32h 10mDelta
Deal found 11/9C$ 705
mié. 15/1012:45 p.m.SEA - OSL
2 stops19h 35mScandinavian Airlines
lun. 20/101:25 p.m.OSL - SEA
1 stop17h 57mScandinavian Airlines
Deal found 10/9C$ 708
sáb. 6/129:59 p.m.SEA - OSL
2 stops33h 21mDelta
lun. 15/129:25 a.m.OSL - SEA
1 stop35h 25mDelta
Deal found 11/9C$ 710

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 11 septiembre 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

vie. 5/12

2:35 p.m.-11:35 a.m.

1 stop12h 00m

Oslo Gardermoen

mar. 9/12

1:10 p.m.-5:00 p.m.

1 stop12h 50m

C$ 581

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

mié. 3/12

2:35 p.m.-11:35 a.m.

1 stop12h 00m

Oslo Gardermoen

dom. 7/12

9:30 p.m.-5:00 p.m.

1 stop28h 30m

C$ 633

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

mié. 3/12

2:05 p.m.-4:20 p.m.

1 stop17h 15m

Oslo Gardermoen

mié. 10/12

6:25 a.m.-7:58 p.m.

2 stops22h 33m

C$ 700

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

jue. 27/11

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

2 stops18h 45m

Oslo Gardermoen

mié. 10/12

11:00 a.m.-10:22 p.m.

2 stops20h 22m

C$ 705

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

lun. 8/12

11:55 p.m.-1:50 p.m.

2 stops28h 55m

Oslo Gardermoen

mar. 23/12

9:25 a.m.-11:50 a.m.

1 stop35h 25m

C$ 705

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

sáb. 14/2

9:55 p.m.-8:40 a.m.

2 stops25h 45m

Oslo Gardermoen

lun. 23/2

12:40 p.m.-11:40 a.m.

1 stop32h 00m

C$ 712

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

dom. 7/12

2:05 p.m.-4:20 p.m.

1 stop17h 15m

Oslo Gardermoen

mié. 10/12

12:40 p.m.-11:50 a.m.

1 stop32h 10m

C$ 722

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

dom. 15/2

7:33 p.m.-6:50 p.m.

2 stops38h 17m

Oslo Gardermoen

dom. 22/3

9:25 a.m.-12:35 p.m.

1 stop35h 10m

C$ 722

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

dom. 15/2

7:20 a.m.-1:10 p.m.

2 stops20h 50m

Oslo Gardermoen

vie. 20/3

8:00 a.m.-10:16 p.m.

2 stops22h 16m

C$ 723

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

lun. 16/2

7:20 a.m.-1:10 p.m.

2 stops20h 50m

Oslo Gardermoen

sáb. 21/2

10:00 a.m.-10:22 p.m.

2 stops21h 22m

C$ 723

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

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 29 August 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 76 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 11 septiembre 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.

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 11 septiembre 2025.
Read reviews from past customers who have flown KLM,Scandinavian Airlines, andIcelandair 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.
KLM
7.8
Good
1,385 reviews
Check prices

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Scandinavian Airlines
7.4
Good
1,484 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Icelandair
7.0
Good
546 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Lufthansa
6.8
Okay
7,409 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

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. 4 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.

  • How long is the flight from Seattle to Oslo?

    Airlines like Icelandair, Delta, and Scandinavian Airlines fly from Seattle to Oslo in about 12h. The time it takes to get you to your destination can typically vary by up to 6h 45m. The distance from Seattle to Oslo is about 7324 km. This flight may include one or multiple stops.

  • 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$ 596. Other airlines that can offer you cheap pricing are KLM, from C$ 597, and Scandinavian Airlines, from C$ 713. Icelandair is priced at 30% lower than the current average price of a flight leaving 3 months from now.

  • 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 4 airlines flying from Seattle to Oslo

Discover the top 4 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 11 septiembre 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 596AverageC$ 726FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 597AverageC$ 597FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapestC$ 713AverageC$ 766FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapestC$ 888AverageC$ 892FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

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.

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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