Cheap flights from Oslo to Seattle from $371
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oslo to Seattle departing on 10/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Finnair flights from Oslo to Seattle
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Lufthansa flights from Oslo to Seattle
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How to get the cheapest flight ticket from Oslo to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Oslo and Seattle?
What is the cheapest month to fly to Seattle?
In general, November is the cheapest month to fly from Oslo to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $468. If you don’t want to visit Seattle in November, then you should wait until October to fly from Oslo, when ticket prices are also cheap, with an average price of $471.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from Oslo is on a Saturday. momondo users have found tickets for Saturday departures for as low as $536. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Oslo because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $769.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from Oslo at noon is the least expensive time of day to depart. momondo users have found prices as low as $536 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $662. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from Oslo when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $580 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Oslo for as low as $491 on momondo.
What is the cheapest airline that flies from Oslo to Seattle/Tacoma Intl?
Finnair, Scandinavian Airlines, and Lufthansa are the most popular carriers operating from Oslo to Seattle/Tacoma Intl
What airlines fly to Seattle?
Icelandair, British Airways and Lufthansa are the top three most popular airlines that fly to Seattle from Oslo according to our data. Icelandair is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 7 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
Cheap Oslo to Seattle flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Oslo to Seattle
How far is Oslo to Seattle/Tacoma Intl by plane?
There are 4550.6 mi between Oslo and Seattle/Tacoma Intl. Typically, this will take 11h 50m by plane in normal conditions.
When did momondo last update prices for flights from Oslo to Seattle/Tacoma Intl Airport?
Prices for flights from Oslo to Seattle/Tacoma Intl Airport are updated daily.
How many operators does momondo search for flights from Oslo to Seattle/Tacoma Intl Airport?
As of June 2025, there are 7 operators available to choose from for flights from Oslo to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Oslo to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oslo to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Best airlines flying from Oslo to Seattle
Compare and see reviews for airlines that fly from Oslo to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $399 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom $416 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $419 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom $422 | Free Cancellation | Rating 7.6 1,290 reviews | |||
| PriceFrom $423 | Free Cancellation | Rating 6.7 7,136 reviews | |||
| PriceFrom $452 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $504 | Free Cancellation | Rating 7.3 1,387 reviews |
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Oslo to Seattle?
It is quick and easy to find Oslo to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.
Can I find flights from Oslo to Seattle with flexible booking policies on momondo?
All flight searches from Oslo to Seattle on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Oslo to Seattle?
Once all potential Oslo to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Oslo to Seattle right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Oslo and alert you when they change.