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$195+ Cheap flights from Seattle (SEA) to Oslo

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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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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 Tuesday or Monday and return on a Saturday

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 April 30, 2025.

Round-trip from

$543
(Ticket)

One-way from

$195
(Trip.com)

Popular in

June

Cheapest in

November

Average price

$583
From Seattle/Tacoma Intl to Oslo
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One-way flight from Seattle/Tacoma Intl to Oslo
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Highest demand for flights based on searches. 21% potential increase in price ($189 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($35 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 April 30, 2025.

This oojo deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/93:45 pmSEA - OSL
1 stop14h 55mIcelandair
Thu 11/201:05 pmOSL - SEA
1 stop12h 55mIcelandair
Deal found 4/29$412
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/244:00 pmSEA - OSL
1 stop13h 10mScandinavian Airlines
Sun 9/75:15 pmOSL - SEA
1 stop29h 35mScandinavian Airlines
Deal found 4/29$437
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:50 pmSEA - OSL
1 stop14h 20mMultiple Airlines
Fri 11/78:25 amOSL - SEA
2 stops19h 33mMultiple Airlines
Deal found 4/29$489
This SWISS deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/114:25 pmSEA - OSL
1 stop22h 30mSWISS
Mon 8/255:40 amOSL - SEA
1 stop18h 15mSWISS
Deal found 4/29$507
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/201:32 pmSEA - OSL
2 stops18h 03mAmerican Airlines
Wed 9/37:40 amOSL - SEA
1 stop19h 40mAmerican Airlines
Deal found 4/29$516
This Air Canada deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:30 amSEA - OSL
2 stops44h 40mAir Canada
Fri 11/76:20 amOSL - SEA
2 stops21h 06mAir Canada
Deal found 4/29$539
This Ticket deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/512:55 pmSEA - OSL
2 stops20h 10mLufthansa
Wed 5/217:15 amOSL - SEA
1 stop18h 44mLufthansa
Deal found 4/29$543
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1110:05 pmSEA - OSL
2 stops25h 50mUnited Airlines
Mon 8/259:50 amOSL - SEA
2 stops43h 51mUnited Airlines
Deal found 4/29$548
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/119:50 amSEA - OSL
2 stops18h 55mDelta
Mon 8/256:05 amOSL - SEA
1 stop20h 30mDelta
Deal found 4/29$568
This British Airways deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1210:40 amSEA - OSL
2 stops20h 35mBritish Airways
Wed 8/205:05 pmOSL - SEA
1 stop27h 30mBritish Airways
Deal found 4/29$569
This Gotogate deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/264:00 pmSEA - TRF
1 stop13h 20mScandinavian Airlines
Thu 6/52:55 pmTRF - SEA
1 stop31h 55mScandinavian Airlines
Deal found 4/28$593
This Austrian Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/197:00 amSEA - OSL
2 stops22h 10mAustrian Airlines
Tue 9/22:55 pmOSL - SEA
2 stops38h 47mAustrian Airlines
Deal found 4/29$601

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 2,558,603 searches. Data last updated April 30, 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 5/5

12:55 pm-6:05 pm

2 stops20h 10m

Oslo Gardermoen

Wed 5/21

7:15 am-4:59 pm

1 stop18h 44m

$543

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 6/1

7:00 pm-3:25 pm

1 stop11h 25m

Oslo Gardermoen

Thu 8/21

4:30 pm-8:40 pm

1 stop13h 10m

$558

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 6/1

4:00 pm-12:10 am

1 stop23h 10m

Oslo Gardermoen

Sun 6/8

8:55 pm-1:50 pm

1 stop25h 55m

$577

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 5/5

5:30 am-6:05 pm

2 stops27h 35m

Oslo Gardermoen

Wed 5/21

7:15 am-9:18 am

2 stops35h 03m

$579

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 5/12

2:40 pm-1:05 pm

2 stops37h 25m

Oslo Gardermoen

Mon 5/19

5:40 am-9:31 pm

2 stops24h 51m

$585

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Mon 5/26

4:00 pm-2:20 pm

1 stop13h 20m

Oslo Sandefjord

Thu 6/5

2:55 pm-1:50 pm

1 stop31h 55m

$593

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 5/21

5:30 am-6:05 pm

2 stops27h 35m

Oslo Gardermoen

Wed 5/28

7:15 am-4:59 pm

1 stop18h 44m

$641

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 5/20

8:20 pm-8:40 pm

1 stop15h 20m

Oslo Gardermoen

Mon 5/26

6:30 am-11:40 am

1 stop14h 10m

$676

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 6/4

6:50 pm-6:05 pm

1 stop14h 15m

Oslo Gardermoen

Wed 6/11

6:50 am-8:37 pm

2 stops22h 47m

$697

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 7/8

2:24 pm-12:35 pm

2 stops37h 11m

Oslo Sandefjord

Sun 7/20

9:35 pm-1:50 pm

2 stops25h 15m

$783

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 26 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 April 25, 2025.

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 43 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, November is the cheapest month in which you can book a flight from Seattle to Oslo (average of $567). Flying from Seattle to Oslo in June is currently the most expensive (average of $1,059). 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 April 30, 2025.

It’s optimal to fly from Seattle to Oslo in the evening. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Seattle to Oslo?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Oslo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Oslo flight should consider departing on Sunday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 1.6 - 3.5 inches per month. August is typically the wettest month, when rainfall can reach 3.5 in. February is typically the driest time to visit Oslo when rainfall is around 1.6 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

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 April 30, 2025.
Get a feel of what it's like to fly with Delta, KLM and SWISS from Seattle to Oslo by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
1,588 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

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.
Air France
7.4
Good
1,446 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

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) 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 10 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, Lufthansa ($543), Icelandair ($558), and Scandinavian Airlines ($577) offers the cheapest pricing from Seattle to Oslo. Lufthansa is 23% 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 Icelandair, which is currently one of the cheapest options available, starting at $195. SWISS flights start at $424 while deals on Delta start at $468 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, November is the cheapest month in which you can book a flight from Seattle to Oslo (average of $567). Flying from Seattle to Oslo in June is currently the most expensive (average of $1,059). 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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Top 10 airlines flying from Seattle to Oslo

Discover the top 10 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 2,558,603 searches. Data last updated April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$446Average$679FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$473Average$662FlexibilityNo cancel feeOn-time70%
FinnairCheapest$484Average$737FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$494Average$897FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$563Average$898FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$564Average$694FlexibilityNo cancel feeOn-time71%
DeltaCheapest$569Average$813FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$570Average$840FlexibilityNo cancel feeOn-time69%
KLMCheapest$584Average$939FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$590Average$819FlexibilityNo cancel feeOn-time77%

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