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$404+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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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 February 20, 2025.

Round-trip from

$467
(Flightnetwork)

One-way from

$404
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$702
From Seattle/Tacoma Intl to Oslo
Search Deals
One-way flight from Seattle/Tacoma Intl to Oslo
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Highest demand for flights based on searches. 25% potential increase in price ($267 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Booking.com deal was found by Cheapflights users on 2/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/243:35 pmSEA - OSL
1 stop13h 00mIcelandair
Sun 4/610:30 pmOSL - SEA
1 stop28h 20mIcelandair
Deal found 2/19$447
This Booking.com deal was found by Cheapflights users on 2/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/182:07 pmSEA - OSL
2 stops20h 03mBritish Airways
Wed 4/25:05 pmOSL - SEA
1 stop27h 30mBritish Airways
Deal found 2/20$523
This American Airlines deal was found by Cheapflights users on 2/20. 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 3/181:25 pmSEA - OSL
2 stops20h 45mAmerican Airlines
Wed 4/27:40 amOSL - SEA
1 stop19h 40mAmerican Airlines
Deal found 2/20$530
This lol.travel deal was found by Cheapflights users on 2/19. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/182:50 pmSEA - OSL
2 stops37h 20mSWISS
Wed 4/25:40 amOSL - SEA
2 stops22h 21mSWISS
Deal found 2/19$533
This Gotogate deal was found by Cheapflights users on 2/19. 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.
Tue 3/184:10 pmSEA - OSL
1 stop17h 45mLufthansa
Wed 4/27:15 amOSL - SEA
1 stop18h 44mLufthansa
Deal found 2/19$535
This Finnair deal was found by Cheapflights users on 2/19. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/282:35 pmSEA - OSL
1 stop24h 05mMultiple Airlines
Fri 11/78:45 amOSL - SEA
2 stops19h 13mMultiple Airlines
Deal found 2/19$541
This Finnair deal was found by Cheapflights users on 2/19. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/282:35 pmSEA - OSL
2 stops18h 00mFinnair
Fri 11/78:45 amOSL - SEA
2 stops19h 13mFinnair
Deal found 2/19$547
This KLM deal was found by Cheapflights users on 2/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/52:10 pmSEA - OSL
1 stop21h 40mKLM
Thu 3/135:00 pmOSL - SEA
1 stop27h 40mKLM
Deal found 2/19$560
This Delta deal was found by Cheapflights users on 2/19. 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.
Wed 3/57:28 amSEA - OSL
2 stops19h 27mDelta
Thu 3/136:30 amOSL - SEA
1 stop14h 10mDelta
Deal found 2/19$565
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 4/13:35 pmSEA - OSL
2 stops17h 30mUnited Airlines
Tue 4/86:35 amOSL - SEA
3 stops23h 40mUnited Airlines
Deal found 2/19$572
This Flysmarter deal was found by Cheapflights users on 2/19. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/243:45 pmSEA - OSL
2 stops18h 10mAir Canada
Sun 4/66:50 amOSL - SEA
2 stops21h 11mAir Canada
Deal found 2/19$611
This FlightHub deal was found by Cheapflights users on 2/20. 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.
Fri 5/93:45 pmSEA - TRF
2 stops17h 40mMultiple Airlines
Fri 5/166:05 amTRF - SEA
2 stops23h 35mMultiple Airlines
Deal found 2/20$858

Find flights from Seattle to Oslo within your budget

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 February 20, 2025.

Fly from

Seattle

Fly to

Oslo

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/24

3:35 pm-12:35 pm

1 stop13h 00m

Oslo Gardermoen

Sun 4/6

10:30 pm-5:50 pm

1 stop28h 20m

$447

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/18

2:07 pm-6:10 pm

2 stops20h 03m

Oslo Gardermoen

Wed 4/2

5:05 pm-11:35 am

1 stop27h 30m

$523

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/18

1:25 pm-6:10 pm

2 stops20h 45m

Oslo Gardermoen

Wed 4/2

7:40 am-6:20 pm

1 stop19h 40m

$530

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/18

2:50 pm-12:10 pm

2 stops37h 20m

Oslo Gardermoen

Wed 4/2

5:40 am-7:01 pm

2 stops22h 21m

$533

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/18

4:10 pm-5:55 pm

1 stop17h 45m

Oslo Gardermoen

Wed 4/2

7:15 am-4:59 pm

1 stop18h 44m

$535

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 3/5

2:10 pm-8:50 pm

1 stop21h 40m

Oslo Gardermoen

Thu 3/13

5:00 pm-12:40 pm

1 stop27h 40m

$560

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 3/5

7:28 am-11:55 am

2 stops19h 27m

Oslo Gardermoen

Thu 3/13

6:30 am-12:40 pm

1 stop14h 10m

$565

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 4/1

3:35 pm-6:05 pm

2 stops17h 30m

Oslo Gardermoen

Tue 4/8

6:35 am-9:15 pm

3 stops23h 40m

$572

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 4/9

1:30 pm-11:30 pm

1 stop25h 00m

Oslo Gardermoen

Wed 4/23

1:20 pm-11:09 pm

2 stops18h 49m

$580

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/24

3:45 pm-5:55 pm

2 stops18h 10m

Oslo Gardermoen

Sun 4/6

6:50 am-7:01 pm

2 stops21h 11m

$611

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 25 results
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2
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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.

Travel insights for flights from Seattle to Oslo

Get recent, data-driven insights about flights from Seattle to Oslo including ideal travel times, pricing trends, and more.

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 February 14, 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 $1,134). 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 February 20, 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 February 20, 2025.
Delta
8.0
Very good
8,219 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

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
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

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
8,219 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

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.

Finnair
7.6
Good
1,274 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

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
1,568 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

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
1,449 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

8.0

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, Icelandair ($467), British Airways ($523), and American Airlines ($541) offers the cheapest pricing from Seattle to Oslo. Icelandair is 38% 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 Lufthansa, which is currently one of the cheapest options available, starting at $404. Air Canada flights start at $464 while deals on United Airlines start at $486 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 $1,134). 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$454Average$818FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$475Average$694FlexibilityNo cancel feeOn-time70%
FinnairCheapest$484Average$869FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$533Average$898FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$562Average$699FlexibilityNo cancel feeOn-time71%
DeltaCheapest$569Average$832FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$570Average$902FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$578Average$943FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$590Average$902FlexibilityNo cancel feeOn-time77%
KLMCheapest$590Average$996FlexibilityNo cancel feeOn-time75%
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