Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Londonderry to Seattle as you normally would.
Information is based on travel restrictions from Derry to Seattle/Tacoma Intl
Most visitors from Derry need to provide a negative COVID-19 test result and/or quarantine to enter Seattle/Tacoma Intl.
COVID-19 testing requirements
Visitors from Derry must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Seattle/Tacoma Intl.
Quarantine requirements
Visitors from Derry are not required to quarantine after entering Seattle/Tacoma Intl.
Returning to Derry from Seattle/Tacoma Intl
COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering Derry.
Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Derry.