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$328+ Cheap flights from Washington 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Washington to Oslo

Discover tips and strategies to find the most affordable flight options for your journey from Washington (USWA) 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 January 21, 2025.

Round-trip from

$462
(Mytrip)

One-way from

$328
(Kiwi.com)
From Washington to Oslo
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One-way flight from Washington to Oslo
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Find flight deals from Washington to Oslo

Cheapest flights from Washington to Oslo
Explore the most affordable flight options available from Washington to Oslo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Booking.com deal was found by Cheapflights users on 1/20. 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.
Mon 1/202:35 pmSEA - OSL
1 stop12h 00mIcelandair
Tue 2/41:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 1/20$454
This Finnair deal was found by Cheapflights users on 1/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/187:50 pmSEA - OSL
1 stop18h 50mFinnair
Fri 3/288:45 amOSL - SEA
2 stops20h 25mFinnair
Deal found 1/20$506
This Finnair deal was found by Cheapflights users on 1/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/196:50 pmSEA - OSL
1 stop18h 50mMultiple Airlines
Wed 2/268:50 pmOSL - SEA
2 stops31h 15mMultiple Airlines
Deal found 1/20$509
This Booking.com deal was found by Cheapflights users on 1/20. 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 3/187:50 pmSEA - OSL
1 stop14h 20mBritish Airways
Mon 4/75:05 pmOSL - SEA
1 stop27h 05mBritish Airways
Deal found 1/20$518
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Mon 3/107:50 pmSEA - OSL
1 stop18h 50mAmerican Airlines
Mon 3/1711:30 amOSL - SEA
1 stop32h 50mAmerican Airlines
Deal found 1/21$523
This KLM deal was found by Cheapflights users on 1/21. 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
Wed 3/129:20 amOSL - SEA
1 stop35h 20mKLM
Deal found 1/21$541
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/171:35 pmSEA - OSL
1 stop18h 50mDelta
Mon 4/79:20 amOSL - SEA
1 stop35h 25mDelta
Deal found 1/20$543
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com 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
Fri 3/286:00 amOSL - SEA
1 stop16h 20mLufthansa
Deal found 1/20$559
This United Airlines deal was found by Cheapflights users on 1/21. 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 3/186:15 amSEA - OSL
3 stops27h 40mUnited Airlines
Fri 3/286:00 amOSL - SEA
1 stop16h 20mUnited Airlines
Deal found 1/21$574
This Air France deal was found by Cheapflights users on 1/20. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/96:40 pmSEA - OSL
1 stop18h 50mAir France
Wed 4/236:00 amOSL - SEA
1 stop20h 40mAir France
Deal found 1/20$590
This Air Canada deal was found by Cheapflights users on 1/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/210:35 amSEA - OSL
2 stops22h 20mAir Canada
Sun 2/96:20 amOSL - SEA
2 stops24h 47mAir Canada
Deal found 1/19$608
This Finnair deal was found by Cheapflights users on 1/21. 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.
Wed 3/56:30 pmPDX - OSL
1 stop19h 10mFinnair
Mon 3/178:50 pmOSL - PDX
2 stops32h 24mFinnair
Deal found 1/21$612

Find flights from Washington to Oslo within your budget

Customize your flight search to find flights from Washington 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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 2/18

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Wed 2/26

1:10 pm-5:00 pm

1 stop12h 50m

$462

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/18

7:50 pm-10:40 pm

1 stop18h 50m

Oslo Gardermoen

Fri 3/28

8:45 am-9:10 pm

2 stops20h 25m

$506

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 2/19

6:50 pm-10:40 pm

1 stop18h 50m

Oslo Gardermoen

Wed 2/26

8:50 pm-7:05 pm

2 stops31h 15m

$509

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/18

7:50 pm-6:10 pm

1 stop14h 20m

Oslo Gardermoen

Mon 4/7

5:05 pm-11:10 am

1 stop27h 05m

$518

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/10

7:50 pm-10:40 pm

1 stop18h 50m

Oslo Gardermoen

Mon 3/17

11:30 am-12:20 pm

1 stop32h 50m

$523

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 3/5

2:10 pm-8:50 pm

1 stop21h 40m

Oslo Gardermoen

Wed 3/12

9:20 am-12:40 pm

1 stop35h 20m

$541

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/17

1:35 pm-4:25 pm

1 stop18h 50m

Oslo Gardermoen

Mon 4/7

9:20 am-11:45 am

1 stop35h 25m

$543

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/18

4:10 pm-5:55 pm

1 stop17h 45m

Oslo Gardermoen

Fri 3/28

6:30 am-1:10 pm

1 stop14h 40m

$559

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/18

6:15 am-5:55 pm

3 stops27h 40m

Oslo Gardermoen

Fri 3/28

6:00 am-2:20 pm

1 stop16h 20m

$574

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 4/9

6:40 pm-10:30 pm

1 stop18h 50m

Oslo Gardermoen

Wed 4/23

6:00 am-5:40 pm

1 stop20h 40m

$590

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 47 results
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Best time to book a flight from Washington to Oslo

Have a flexible travel schedule? Discover the best time to fly to Oslo from Washington 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 Washington to Oslo

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

What is the cheapest month to book a flight from State of Washington to Oslo?

Currently, November is the cheapest month in which you can book a flight from State of Washington to Oslo (average of $567). Flying from State of Washington to Oslo in June is currently the most expensive (average of $1,169). 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 WA to OSL?

Find hourly flight availability from Washington 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 January 21, 2025.

When flying from State of Washington to Oslo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 January 21, 2025.
Peruse reviews from past customers who have flown with Icelandair, Finnair and American Airlines from Washington to Oslo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,600 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.6

Reviews

1 / 10

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 Washington to Oslo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from State of Washington to Oslo one-way?

    The cheapest airlines for a one-way flight from State of Washington to Oslo are Lufthansa ($387), American Airlines ($403), and British Airways ($408).

  • What are the most popular routes from State of Washington to Oslo?

    While some choose either Portland - Oslo Gardermoen or Seattle/Tacoma Intl - Oslo Sandefjord, Seattle/Tacoma Intl - Oslo Gardermoen is the most popular route from State of Washington to Oslo.

  • Can I find deals for flights from Washington to Oslo that include hotel bookings?

    Yes. In addition to deals on Washington to Oslo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Oslo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Oslo.

  • Can I find deals for business class flights from Washington to Oslo?

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Oslo?

    Currently, November is the cheapest month in which you can book a flight from State of Washington to Oslo (average of $567). Flying from State of Washington to Oslo in June is currently the most expensive (average of $1,169). 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 Washington to Oslo

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Oslo

Discover the top 10 airlines that operate flights from Washington 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$464Average$1,143FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$475Average$698FlexibilityNo cancel feeOn-time70%
FinnairCheapest$484Average$870FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$533Average$898FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$553Average$678FlexibilityNo cancel feeOn-time71%
DeltaCheapest$569Average$1,072FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$570Average$968FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$578Average$917FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$592Average$999FlexibilityNo cancel feeOn-time77%
KLMCheapest$593Average$998FlexibilityNo cancel feeOn-time75%
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