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Oslo

$174+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo are usually found in November or October, booked 79 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 June 30, 2025.

Round-trip from

$432
(Icelandair)

One-way from

$174
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$862
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. 13% potential increase in price ($103 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 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 June 30, 2025.

This Icelandair deal was found by Cheapflights users on 6/30. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/317:00 pmSEA - OSL
1 stop11h 25mIcelandair
Fri 9/121:50 pmOSL - SEA
1 stop13h 00mIcelandair
Deal found 6/30$432
This oojo deal was found by Cheapflights users on 6/30. 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.
Sun 8/104:00 pmSEA - OSL
1 stop11h 55mScandinavian Airlines
Sun 8/177:55 pmOSL - SEA
1 stop26h 55mScandinavian Airlines
Deal found 6/30$476
This British Airways deal was found by Cheapflights users on 6/27. 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.
Mon 7/218:20 pmSEA - OSL
1 stop13h 20mBritish Airways
Tue 8/197:25 pmOSL - SEA
1 stop25h 10mBritish Airways
Deal found 6/27$477
This American Airlines deal was found by Cheapflights users on 6/30. 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 11/125:47 pmSEA - OSL
2 stops19h 53mMultiple Airlines
Thu 11/277:00 amOSL - SEA
2 stops21h 05mMultiple Airlines
Deal found 6/30$483
This Air France deal was found by Cheapflights users on 6/30. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:40 pmSEA - OSL
1 stop18h 50mAir France
Fri 8/228:25 amOSL - SEA
1 stop18h 10mAir France
Deal found 6/30$494
This Flightnetwork deal was found by Cheapflights users on 6/30. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:40 pmSEA - OSL
1 stop17h 05mFinnair
Thu 8/218:35 amOSL - SEA
1 stop16h 25mFinnair
Deal found 6/30$498
This Delta deal was found by Cheapflights users on 6/30. 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.
Tue 10/2811:20 amSEA - OSL
2 stops21h 05mDelta
Fri 11/76:20 amOSL - SEA
1 stop15h 55mDelta
Deal found 6/30$499
This Mytrip deal was found by Cheapflights users on 6/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/184:00 pmSEA - TRF
1 stop13h 20mScandinavian Airlines
Tue 8/262:55 pmTRF - SEA
1 stop31h 55mScandinavian Airlines
Deal found 6/28$504
This FlightHub deal was found by Cheapflights users on 6/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/285:50 amSEA - OSL
2 stops27h 55mAir Canada
Fri 11/76:15 amOSL - SEA
2 stops36h 16mAir Canada
Deal found 6/28$505
This United Airlines deal was found by Cheapflights users on 6/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1810:05 pmSEA - OSL
2 stops34h 10mUnited Airlines
Tue 8/267:15 amOSL - SEA
2 stops24h 44mUnited Airlines
Deal found 6/28$510
This KLM deal was found by Cheapflights users on 6/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/261:55 pmSEA - OSL
1 stop14h 45mKLM
Mon 9/17:15 pmOSL - SEA
1 stop25h 30mKLM
Deal found 6/28$516
This Iberia deal was found by Cheapflights users on 6/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:30 pmSEA - OSL
1 stop24h 55mIberia
Tue 10/146:55 pmOSL - SEA
2 stops37h 55mIberia
Deal found 6/29$517

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 June 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

Sun 8/31

3:45 pm-12:35 pm

1 stop11h 50m

Oslo Gardermoen

Tue 9/9

1:50 pm-8:40 pm

1 stop15h 50m

$432

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 8/10

4:00 pm-12:55 pm

1 stop11h 55m

Oslo Gardermoen

Sun 8/17

7:55 pm-1:50 pm

1 stop26h 55m

$476

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 7/21

8:20 pm-6:40 pm

1 stop13h 20m

Oslo Gardermoen

Thu 8/21

8:05 pm-11:35 am

1 stop24h 30m

$477

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 11/12

5:47 pm-10:40 pm

2 stops19h 53m

Oslo Gardermoen

Thu 11/27

7:00 am-7:05 pm

2 stops21h 05m

$483

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

6:40 pm-10:30 pm

1 stop18h 50m

Oslo Gardermoen

Fri 8/22

8:25 am-5:35 pm

1 stop18h 10m

$494

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 8/14

5:40 pm-7:45 pm

1 stop17h 05m

Oslo Gardermoen

Thu 8/21

8:35 am-4:00 pm

1 stop16h 25m

$498

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 10/28

11:20 am-4:25 pm

2 stops21h 05m

Oslo Gardermoen

Fri 11/7

6:20 am-1:15 pm

1 stop15h 55m

$499

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Mon 8/18

4:00 pm-2:20 pm

1 stop13h 20m

Oslo Sandefjord

Tue 8/26

2:55 pm-1:50 pm

1 stop31h 55m

$504

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 10/28

5:50 am-5:45 pm

2 stops27h 55m

Oslo Gardermoen

Fri 11/7

6:15 am-9:31 am

2 stops36h 16m

$505

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/18

10:05 pm-5:15 pm

2 stops34h 10m

Oslo Gardermoen

Tue 8/26

7:15 am-10:59 pm

2 stops24h 44m

$510

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 27 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 June 27, 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 79 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 $1,016). 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 June 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.

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 June 30, 2025.
See what other customers who have flown with Delta, KLM, and Finnair from Seattle to Oslo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

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
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

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
1,365 reviews
Delta
8.0
Very good
7,973 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

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
1,299 reviews
Delta
8.0
Very good
7,973 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

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!
Air France
7.5
Good
1,471 reviews
Delta
8.0
Very good
7,973 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

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
1,654 reviews
Delta
8.0
Very good
7,973 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

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) 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 ($432), Scandinavian Airlines ($476), and British Airways ($477) offers the cheapest pricing from Seattle to Oslo. Icelandair is 33% 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 $174. British Airways flights start at $384 while deals on Lufthansa start at $416 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 $1,016). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$426Average$622FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$475Average$672FlexibilityNo cancel feeOn-time70%
FinnairCheapest$484Average$716FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$494Average$759FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$517Average$835FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$563Average$867FlexibilityNo cancel feeOn-time76%
KLMCheapest$564Average$787FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$569Average$639FlexibilityNo cancel feeOn-time77%
DeltaCheapest$569Average$820FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$578Average$694FlexibilityNo cancel feeOn-time71%

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