Exploring surriounding area of the largest city of Pacific Northwest territory also at the end of summer holidays 2017 is possible with Icelandair when departing from Scandinavia. Return flights to Seattle from Stockholm are now available already for €279 and from Oslo for €311. Moreover this airline offers free stop-over up to 177 hours so you can visit both amazing Iceland and USA at once. (More details in this article).
Travel restrictions with Icelandair - look for flights between 20th of August and 22nd of October 2017. (The earliest date of your inbound flight has to be 5th of September though). Max stay 1 month.
Booking samples
You can compare travel dates directly at the website of carrier. To check our your connection possibilities to above cities from your home town we recommend to use service of Skyscanner.
Booking sample of cheap return flights from Scandinavia to Seattle from €279 here. In this case you would be departing form Stockholm to Seattle on 22nd of August. Your return flight from America back to Europe would be on 9th of September 2017.