What are the cheapest airlines flying from Seattle to Oslo Gardermoen Airport round-trip?

Currently priced at $431, Icelandair will fly you from Seattle to Oslo Gardermoen Airport and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Scandinavian Airlines and SWISS - these airlines can fly you to your destination from $469 and $474, respectively. Icelandair is 32% 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 Gardermoen Airport one-way?

One-way options have recently been found by users for as low as $291 on Icelandair. Other airlines that offer cheap prices include British Airways from $356 and American Airlines from $383 one-way.

In terms of precipitation, rainfall in Oslo Gardermoen Airport 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 Gardermoen Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to Oslo Gardermoen Airport, 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).

What are the most popular airlines that fly from Seattle to Oslo Gardermoen Airport?

American Airlines, Air France and Finnair are the most popular airlines when flying from Seattle to Oslo Gardermoen Airport.

What is the cheapest day to fly round-trip from Seattle to Oslo Gardermoen Airport?

Saturday flights are generally found to be more expensive for flights from Seattle to Oslo Gardermoen Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Oslo Gardermoen Airport.

How far in advance should I book a flight from Seattle to Oslo Gardermoen Airport?

To save on the cost of your flight from Seattle to Oslo Gardermoen Airport, book at least 26 days before your planned departure. Booking around this time can save you about 31% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $468 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $611.

What is the cheapest month to fly from Seattle to Oslo Gardermoen Airport?

January is one of the best times of the year to fly to Oslo Gardermoen Airport from Seattle. Prices for January average $636 per person but you can even find prices for as low as $431. The most expensive prices can be found in the month of June. Opting for a January flight can save you 35% on your journey compared to booking in June

What airport do you fly from for flights from Seattle to Oslo Gardermoen?

Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Oslo Gardermoen from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Oslo Gardermoen should be relatively easy as there are 0 daily outbound flights to Oslo Gardermoen from 10 different airlines.

Can I find deals for flights from Seattle to Oslo Gardermoen that include hotel bookings?

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

How can I find direct flights from Seattle to Oslo Gardermoen?

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

Can I find deals for business class flights from Seattle to Oslo Gardermoen?

Yes. Cheapflights offers flight deals from Seattle to Oslo Gardermoen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$291+ Flights from Seattle to Oslo Gardermoen Airport

Q: How much does it cost to fly round-trip from Seattle to Oslo Gardermoen Airport?

Airfare is below average for this route at the moment. Seattle to Oslo Gardermoen Airport flights typically cost between $522 and $815 in October. The cheapest round-trip price found within the last 3 days was $431 on Icelandair (Oct 5-Oct 19).

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Find cheap flights from Seattle to Oslo Gardermoen with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo Gardermoen are usually found in January or November, booked 76 days in advance, depart on a Tuesday or Monday and return on a Saturday

Cheap flight deals from Seattle to Oslo Gardermoen

Round-trip from	$431 (oojo)
One-way from	$291 (Cheapflightsfares)
Popular in	June
Cheapest in	January
Average price	$740

From Seattle/Tacoma Intl to Oslo Gardermoen

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One-way flight from Seattle/Tacoma Intl to Oslo Gardermoen

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Highest demand for flights based on searches. 15% potential increase in price ($114 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Seattle to Oslo Gardermoen

Cheapest flights from Seattle to Oslo Gardermoen
Explore the most affordable flight options available from Seattle to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Sun 10/53:45 pmSEA - OSL

1 stop11h 50mIcelandair

Sun 10/191:50 pmOSL - SEA

1 stop15h 50mIcelandair

Deal found 7/27

$431

Sun 10/54:20 pmSEA - OSL

1 stop11h 35mScandinavian Airlines

Tue 10/218:55 pmOSL - SEA

1 stop26h 05mScandinavian Airlines

Deal found 7/27

$469

Mon 11/36:50 pmSEA - OSL

1 stop18h 50mBritish Airways

Tue 11/117:25 pmOSL - SEA

1 stop30h 30mBritish Airways

Deal found 7/26

$471

Mon 8/114:25 pmSEA - OSL

1 stop22h 30mSWISS

Tue 8/265:40 amOSL - SEA

2 stops25h 40mSWISS

Deal found 7/27

$474

Mon 8/111:45 pmSEA - OSL

2 stops16h 55mAir Canada

Tue 8/266:45 amOSL - SEA

2 stops23h 00mAir Canada

Deal found 7/27

$483

Sun 8/176:50 pmSEA - OSL

1 stop14h 15mMultiple Airlines

Mon 8/255:40 amOSL - SEA

1 stop18h 15mMultiple Airlines

Deal found 7/26

$487

Tue 10/2811:42 amSEA - OSL

2 stops18h 28mAmerican Airlines

Fri 11/77:10 amOSL - SEA

2 stops20h 59mAmerican Airlines

Deal found 7/27

$490

Mon 8/116:40 pmSEA - OSL

1 stop18h 50mAir France

Fri 8/226:05 amOSL - SEA

1 stop14h 10mAir France

Deal found 7/28

$494

Tue 8/126:40 pmSEA - OSL

1 stop32h 10mDelta

Tue 8/196:30 amOSL - SEA

1 stop14h 05mDelta

Deal found 7/26

$497

Wed 8/132:10 pmSEA - OSL

1 stop14h 30mKLM

Mon 8/187:15 pmOSL - SEA

1 stop25h 20mKLM

Deal found 7/26

$509

Mon 7/282:20 pmSEA - OSL

1 stop16h 20mLufthansa

Thu 8/216:35 amOSL - SEA

1 stop14h 20mLufthansa

Deal found 7/27

$522

Sun 7/272:20 pmSEA - OSL

1 stop18h 40mUnited Airlines

Thu 8/217:15 amOSL - SEA

2 stops24h 44mUnited Airlines

Deal found 7/26

$524

Best flights from Seattle to Oslo Gardermoen
Discover carefully curated flight deals from Seattle to Oslo Gardermoen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2025.

Sun 10/53:45 pmSEA - OSL

1 stop11h 50mIcelandair

Sun 10/191:50 pmOSL - SEA

1 stop15h 50mIcelandair

Deal found 7/27

$431

Sun 10/54:20 pmSEA - OSL

1 stop11h 35mScandinavian Airlines

Tue 10/218:55 pmOSL - SEA

1 stop26h 05mScandinavian Airlines

Deal found 7/27

$469

Mon 8/114:25 pmSEA - OSL

1 stop22h 30mSWISS

Tue 8/265:40 amOSL - SEA

2 stops25h 40mSWISS

Deal found 7/27

$474

Mon 8/111:45 pmSEA - OSL

2 stops16h 55mAir Canada

Tue 8/266:45 amOSL - SEA

2 stops23h 00mAir Canada

Deal found 7/27

$483

Sun 8/176:50 pmSEA - OSL

1 stop14h 15mMultiple Airlines

Mon 8/255:40 amOSL - SEA

1 stop18h 15mMultiple Airlines

Deal found 7/26

$487

Mon 8/116:40 pmSEA - OSL

1 stop18h 50mAir France

Fri 8/226:05 amOSL - SEA

1 stop14h 10mAir France

Deal found 7/28

$494

Tue 8/126:40 pmSEA - OSL

1 stop32h 10mDelta

Tue 8/196:30 amOSL - SEA

1 stop14h 05mDelta

Deal found 7/26

$497

Wed 8/132:10 pmSEA - OSL

1 stop14h 30mKLM

Mon 8/187:15 pmOSL - SEA

1 stop25h 20mKLM

Deal found 7/26

$509

Tue 9/97:10 amSEA - OSL

3 stops25h 05mUnited Airlines

Wed 10/111:35 amOSL - SEA

1 stop14h 24mUnited Airlines

Deal found 7/28

$530

Fri 10/1710:39 amSEA - OSL

2 stops20h 41mBritish Airways

Fri 11/77:10 amOSL - SEA

1 stop18h 45mBritish Airways

Deal found 7/27

$532

Last-minute flights from Seattle to Oslo Gardermoen
Discover last-minute flight deals from Seattle to Oslo Gardermoen. Data last updated July 28, 2025 and is based on user searches.

Mon 7/282:20 pmSEA - OSL

1 stop16h 20mLufthansa

Thu 8/216:35 amOSL - SEA

1 stop14h 20mLufthansa

Deal found 7/27

$522

Sat 8/24:20 pmSEA - OSL

1 stop22h 35mSWISS

Mon 8/255:40 amOSL - SEA

1 stop18h 15mSWISS

Deal found 7/27

$635

Sat 8/25:30 amSEA - OSL

2 stops25h 10mAir Canada

Mon 8/256:45 amOSL - SEA

2 stops37h 15mAir Canada

Deal found 7/27

$706

Sat 8/24:20 pmSEA - OSL

1 stop22h 35mMultiple Airlines

Sat 8/166:35 amOSL - SEA

1 stop14h 20mMultiple Airlines

Deal found 7/27

$718

Sat 8/25:40 pmSEA - OSL

1 stop32h 25mDelta

Fri 8/226:00 amOSL - SEA

2 stops26h 54mDelta

Deal found 7/27

$719

Sat 8/21:18 pmSEA - OSL

2 stops18h 17mAmerican Airlines

Sat 8/168:20 amOSL - SEA

2 stops22h 16mAmerican Airlines

Deal found 7/25

$916

Sun 8/33:45 pmSEA - OSL

1 stop11h 50mIcelandair

Thu 8/74:30 pmOSL - SEA

1 stop13h 10mIcelandair

Deal found 7/28

$2,341

Mon 8/44:00 pmSEA - OSL

1 stop33h 00mScandinavian Airlines

Mon 8/186:00 amOSL - SEA

1 stop16h 50mScandinavian Airlines

Deal found 7/26

$575

Mon 8/114:25 pmSEA - OSL

1 stop22h 30mSWISS

Tue 8/265:40 amOSL - SEA

2 stops25h 40mSWISS

Deal found 7/27

$474

Mon 8/111:45 pmSEA - OSL

2 stops16h 55mAir Canada

Tue 8/266:45 amOSL - SEA

2 stops23h 00mAir Canada

Deal found 7/27

$483

Mon 8/116:40 pmSEA - OSL

1 stop18h 50mAir France

Fri 8/226:05 amOSL - SEA

1 stop14h 10mAir France

Deal found 7/28

$494

Tue 8/126:40 pmSEA - OSL

1 stop32h 10mDelta

Tue 8/196:30 amOSL - SEA

1 stop14h 05mDelta

Deal found 7/26

$497

One-way flights from Seattle to Oslo Gardermoen
Search for one-way flight options from Seattle to Oslo Gardermoen. Find affordable one-way fares based on user searches. Data last updated July 28, 2025.

Mon 9/153:45 pmSEA - OSL

1 stop11h 50mIcelandair

Deal found 7/27

$291

Mon 9/151:30 pmSEA - OSL

1 stop20h 10mBritish Airways

Deal found 7/27

$356

Wed 9/37:50 amSEA - OSL

3 stops30h 00mMultiple Airlines

Deal found 7/26

$370

Wed 9/33:00 pmSEA - OSL

2 stops19h 15mAmerican Airlines

Deal found 7/27

$383

Mon 8/185:30 amSEA - OSL

2 stops46h 35mAir Canada

Deal found 7/26

$395

Wed 9/37:10 amSEA - OSL

3 stops25h 50mUnited Airlines

Deal found 7/27

$406

Sat 9/135:40 pmSEA - OSL

1 stop13h 40mKLM

Deal found 7/26

$1,396

Sat 9/135:40 pmSEA - OSL

1 stop15h 50mDelta

Deal found 7/27

$1,398

Wed 9/38:00 amSEA - OSL

4 stops39h 45mEthiopian Air

Deal found 7/26

$1,666

Sun 8/242:55 pmSEA - OSL

2 stops18h 10mLufthansa

Deal found 7/28

$2,074

Sun 8/2411:30 amSEA - OSL

3 stops22h 45mTAP AIR PORTUGAL

Deal found 7/26

$4,462

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Oslo Gardermoen Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 10/5

3:45 pm-12:35 pm

1 stop11h 50m

Oslo Gardermoen

Sun 10/19

1:50 pm-8:40 pm

1 stop15h 50m

$431

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 10/5

4:20 pm-12:55 pm

1 stop11h 35m

Oslo Gardermoen

Tue 10/21

8:55 pm-2:00 pm

1 stop26h 05m

$469

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 11/3

6:50 pm-10:40 pm

1 stop18h 50m

Oslo Gardermoen

Tue 11/11

7:25 pm-4:55 pm

1 stop30h 30m

$471

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

4:25 pm-11:55 pm

1 stop22h 30m

Oslo Gardermoen

Tue 8/26

5:40 am-10:20 pm

2 stops25h 40m

$474

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

1:45 pm-3:40 pm

2 stops16h 55m

Oslo Gardermoen

Tue 8/26

6:45 am-8:45 pm

2 stops23h 00m

$483

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 8/17

6:50 pm-6:05 pm

1 stop14h 15m

Oslo Gardermoen

Mon 8/25

5:40 am-2:55 pm

1 stop18h 15m

$487

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 10/28

11:42 am-2:10 pm

2 stops18h 28m

Oslo Gardermoen

Fri 11/7

7:10 am-7:09 pm

2 stops20h 59m

$490

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

6:40 pm-10:30 pm

1 stop18h 50m

Oslo Gardermoen

Fri 8/22

6:05 am-11:15 am

1 stop14h 10m

$494

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 8/12

6:40 pm-11:50 am

1 stop32h 10m

Oslo Gardermoen

Tue 8/19

6:30 am-11:35 am

1 stop14h 05m

$497

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 8/13

2:10 pm-1:40 pm

1 stop14h 30m

Oslo Gardermoen

Mon 8/18

7:15 pm-11:35 am

1 stop25h 20m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 20 results

Best time to book a flight from Seattle to Oslo Gardermoen

Have a flexible travel schedule? Discover the best time to fly to Oslo Gardermoen 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 Gardermoen Airport

How far ahead should I book a flight from Seattle to Oslo Gardermoen Airport?

To ensure you get the cheapest price possible for a flight from Seattle to Oslo Gardermoen Airport, 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 Gardermoen Airport?

Currently, November is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $567). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,009). 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?

It’s optimal to fly from Seattle to Oslo Gardermoen Airport 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 Gardermoen Airport?

Travelers seeking maximum savings on their Seattle to Oslo Gardermoen Airport 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.

How much does it cost to fly round-trip from Seattle to Oslo Gardermoen Airport?

What’s the top layover airport for flights from Seattle to Oslo Gardermoen Airport?

Copenhagen (CPH) – chosen by Cheapflights users on 50% of 1-stop itineraries from Seattle to Oslo Gardermoen Airport on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to Oslo Gardermoen Airport?

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $553.

What’s the fastest layover option from Seattle to Oslo Gardermoen Airport?

Flights via Frankfurt am Main (FRA) have the shortest average one-way travel time for 1-stop routes: 3h 20m.

Which airport typically offers the quickest layover for flights from Seattle to Oslo Gardermoen Airport?

Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average layover time of 1h 33m.

Reviews of airlines servicing Oslo Gardermoen

Peruse reviews from past customers who have flown with Delta, KLM, and SWISS from Seattle to Oslo Gardermoen Airport 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

7,971 reviews

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

7,971 reviews

Delta

8.0

Very good

7,971 reviews

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

1,381 reviews

Delta

8.0

Very good

7,971 reviews

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

7.6

Good

1,679 reviews

Delta

8.0

Very good

7,971 reviews

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

1,463 reviews

Delta

8.0

Very good

7,971 reviews

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!

United Airlines

7.4

Good

8,893 reviews

Delta

8.0

Very good

7,971 reviews

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

What airport do you fly from for flights from Seattle to Oslo Gardermoen?
Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Oslo Gardermoen from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Oslo Gardermoen should be relatively easy as there are 0 daily outbound flights to Oslo Gardermoen from 10 different airlines.
What are the cheapest airlines flying from Seattle to Oslo Gardermoen Airport round-trip?
Currently priced at $431, Icelandair will fly you from Seattle to Oslo Gardermoen Airport and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Scandinavian Airlines and SWISS - these airlines can fly you to your destination from $469 and $474, respectively. Icelandair is 32% 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 Gardermoen Airport one-way?
One-way options have recently been found by users for as low as $291 on Icelandair. Other airlines that offer cheap prices include British Airways from $356 and American Airlines from $383 one-way.
Can I find deals for flights from Seattle to Oslo Gardermoen that include hotel bookings?
Yes. In addition to deals on Seattle to Oslo Gardermoen flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Oslo Gardermoen?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Oslo Gardermoen.
Can I find deals for business class flights from Seattle to Oslo Gardermoen?
Yes. Cheapflights offers flight deals from Seattle to Oslo Gardermoen 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 Gardermoen Airport?
Currently, November is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $567). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,009). 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

Gardermoen

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Top 10 airlines flying from Seattle to Oslo Gardermoen

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$418	Average$605	FlexibilityNo cancel fee	On-time76%
British Airways	Cheapest$475	Average$670	FlexibilityNo cancel fee	On-time70%
Finnair	Cheapest$484	Average$723	FlexibilityNo cancel fee	On-time76%
Scandinavian Airlines	Cheapest$494	Average$726	FlexibilityNo cancel fee	On-time77%
United Airlines	Cheapest$517	Average$840	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$551	Average$867	FlexibilityNo cancel fee	On-time76%
Air France	Cheapest$552	Average$629	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$573	Average$834	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$578	Average$731	FlexibilityNo cancel fee	On-time71%
KLM	Cheapest$584	Average$792	FlexibilityNo cancel fee	On-time75%

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$291+ Cheap flights from Seattle (SEA) to Oslo Gardermoen (OSL)

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Oslo Gardermoen with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo Gardermoen are usually found in January or November, booked 76 days in advance, depart on a Tuesday or Monday and return on a Saturday

Cheap flight deals from Seattle to Oslo Gardermoen

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Oslo Gardermoen

Cheapest flights from Seattle to Oslo GardermoenExplore the most affordable flight options available from Seattle to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Explore the most affordable flight options available from Seattle to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Oslo Gardermoen Airport that are best for you.

Best time to book a flight from Seattle to Oslo Gardermoen

Have a flexible travel schedule? Discover the best time to fly to Oslo Gardermoen from Seattle with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Oslo Gardermoen Airport

How far ahead should I book a flight from Seattle to Oslo Gardermoen Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Oslo Gardermoen. Price data was last updated on July 25, 2025.

What is the cheapest month to book a flight from Seattle to Oslo Gardermoen Airport?

What is the cheapest time of day to fly from SEA to OSL?

Find hourly flight availability from Seattle to Oslo Gardermoen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2025.

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

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

How much does it cost to fly round-trip from Seattle to Oslo Gardermoen Airport?

What’s the top layover airport for flights from Seattle to Oslo Gardermoen Airport?

Share of 1-stop round-trip flights from Seattle to Oslo Gardermoen Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Seattle to Oslo Gardermoen Airport?

Average round-trip fare for 1-stop flights from Seattle to Oslo Gardermoen Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Seattle to Oslo Gardermoen Airport?

Shortest average travel time for 1-stop one-way flights from Seattle to Oslo Gardermoen Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Seattle to Oslo Gardermoen Airport?

Average layover duration for 1-stop one-way flights from Seattle to Oslo Gardermoen Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Oslo Gardermoen

Peruse reviews from past customers who have flown with Delta, KLM, and SWISS from Seattle to Oslo Gardermoen Airport 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.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Oslo Gardermoen. 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 Gardermoen?

What are the cheapest airlines flying from Seattle to Oslo Gardermoen Airport round-trip?

What are the cheapest airlines to fly from Seattle to Oslo Gardermoen Airport one-way?

Can I find deals for flights from Seattle to Oslo Gardermoen that include hotel bookings?

How can I find direct flights from Seattle to Oslo Gardermoen?

Can I find deals for business class flights from Seattle to Oslo Gardermoen?

What is the cheapest month to book a flight from Seattle to Oslo Gardermoen Airport?

Traveling to a place near Oslo Gardermoen Airport?

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Alternative routes for Seattle to Oslo Gardermoen

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Top 10 airlines flying from Seattle to Oslo Gardermoen

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Cheapest flights from Seattle to Oslo Gardermoen
Explore the most affordable flight options available from Seattle to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.