Find Cheap Flights from Oslo & other airports to Seattle/Tacoma Intl (OSL - SEA)

Search hundreds of travel sites at once for deals on flights to Seattle/Tacoma Intl

Fri 12/15
Fri 12/22
Any month
Compare vs. KAYAK |

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $499 or less.

FAQs for Booking Oslo & other airports to Seattle/Tacoma Intl Flights

How long does a flight from Oslo & other airports to Seattle/Tacoma Intl take?
An average nonstop flight takes 13h 15m, covering a distance of 4553 miles.
Which airlines provide the cheapest flights from Oslo & other airports to Seattle/Tacoma Intl?
In the past 3 days, the cheapest round-trip tickets were found on Norwegian ($406), KLM ($512) and British Airways ($790).
Do I need a passport to fly between Oslo & other airports and Seattle/Tacoma Intl?
Yes.
What’s the cheapest day of the week to fly Oslo & other airports to Seattle/Tacoma Intl?
For Oslo & other airports to Seattle/Tacoma Intl, Monday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Seattle/Tacoma Intl back to Oslo & other airports, the best deals are generally found on Monday, with Monday being the most expensive.

Book cheap flights from Oslo & other airports to Seattle/Tacoma Intl (round-trip)

Airports
Origin
Oslo
$406
only
$406
Destination
Seattle
$406
only
$406
Mon, Jan 29
OSL
SEA
13h 15m
Mon, Feb 12
SEA
OSL
13h 50m
Trip: 15 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 2106 reviews
Boarding
7.2
Comfort
7.2
Crew
7.7
Entertainment
7.2
Food
6.4
CDG
JFK
Excellent 8.6

Plane super modern, speed of crew, comfort

Weight limit on the carry on

CDG
JFK
Okay 4.6

There is no organization when boarding due mainly to the staff's poor training/handling of groups. I also believe that when selecting seats, they should indicate where lavatories are. This knowledge is fairly reasonable to have when choosing where one is to (uncomfortable) sit for a minimum of five hours.

LAX
CDG
Okay 4.6

Rude/ non helpful crew spoiled this flight.

Rude/ non helpful crew spoiled this flight.

LGW
JFK
Mediocre 2.6

If the format is ordering food there's suppose I be a good standard of service. And there isn't. Also they didn't have earphones for sale-- if they're not handing them for free st least make sure you have some for sale.

BOS
LGW
Excellent 10.0

The new plane was amazing and I feel so fortunate to have had the opportunity. The experience was streamlined and the technology state-of-the-art, accessible, and extremely useful. The impressive crew looked flawless and performed their duties very well. It was all quite a spectacle!

It is always really nice to get free coffee as a passenger. Traveling is exhausting and I would have been so appreciative of free coffee on the flight, and felt even more comforted and likely to fly Norwegian in the future.

Thu, Dec 21
OSL
SEA
25h 26m
Wed, Jan 10
SEA
OSL
29h 30m
Trip: 21 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 1538 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.5
Entertainment
7.2
Food
7.5
JNB
AMS
Excellent 9.6

Comfort economy well worth the extra.

ABZ
AMS
Excellent 10.0

Thankful for coffee being served without charge. Not all airlines do that.

FCO
AMS
Excellent 10.0

Flight crew was pleasant and attentive. Seats were comfortable for economy as well. We were allowed to check in extra baggage for free at check in which really helped since we would be catching a connecting flight in Amsterdam

JNB
AMS
Excellent 8.0

Good multi media access and content

SFO
AMS
Excellent 10.0

From pre-boarding, to boarding, to the food, and the attentiveness, everything was top notch! The cleanliness of the plane was only topped by the friendliness of the crew.

The flight was marked at almost 11hrs but ended up being only 9...not a negative other than it meant not spending as much time on board!

Sat, Mar 24
OSL
SEA
26h 20m
Sat, Mar 31
SEA
OSL
16h 25m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13992 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
EWR
Excellent 8.6

Most things

Luggage took forever to be delivered in Newark--one of the longest waits I've ever experienced.

DEN
LHR
Excellent 8.3

Seats were comfortable and staff was very attentive as well as respectful of us when I was sleeping

There was condensation leaking from the ceiling of the cabin. A crew member said this was normal, would have been nice to know this ahead of time to reassure me that for a first-time overseas flier that this is normal.

LHR
FRA
Excellent 10.0

At security London Heathrow, it took 30 minutes for them to check 1 bag of ours! Almost didn't make the flight.

LHR
SFO
Okay 5.6

Very big delay!!!

ORD
LHR
Okay 4.0

Connecting flight experience

Fri, Feb 2
OSL
SEA
13h 15m
Mon, Feb 12
SEA
OSL
13h 50m
Trip: 11 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 2106 reviews
Boarding
7.2
Comfort
7.2
Crew
7.7
Entertainment
7.2
Food
6.4
LGW
JFK
Mediocre 2.6

If the format is ordering food there's suppose I be a good standard of service. And there isn't. Also they didn't have earphones for sale-- if they're not handing them for free st least make sure you have some for sale.

CDG
JFK
Excellent 8.6

Plane super modern, speed of crew, comfort

Weight limit on the carry on

LAX
CDG
Okay 4.6

Rude/ non helpful crew spoiled this flight.

Rude/ non helpful crew spoiled this flight.

ARN
JFK
Excellent 9.3

There were no headphones available for purchase.

LGW
JFK
Okay 4.0

Nice, clean plane.

1. Flight attendants except for a couple, were not interested in helping passengers or answering questions 2. For the basic fare (which I didn’t realise I was even purchasing), you had to pay extra for a seat and for luggage, on long haul transatlantic! 3. I wasn’t offered food or beverage once on the 8 hour trip 4. You had to purchase a blanket if you wanted one. Everyone was wearing their coats onboard. It almost felt like they were intentionally keeping the temperature cold to induce passengers to purchase blankets. When I requested they raise the temperature, I was told that this was the warmest they could make it and this is the warmest on any plane. (Obviously not true. I fly every month and have mostly found plane temperatures to be manageable.) Oh, and did I mention how you had to pay to check luggage on a transatlantic flight!!

*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.