Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to Oklahoma as you normally would.
Information is based on travel restrictions from Northern Ireland to Oklahoma
Most visitors from Northern Ireland need to provide a negative COVID-19 test result and/or quarantine to enter Oklahoma.
COVID-19 testing requirements
Visitors from Northern Ireland 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 Oklahoma.
Quarantine requirements
Visitors from Northern Ireland are not required to quarantine after entering Oklahoma.
Returning to Northern Ireland from Oklahoma
COVID-19 testing requirements
Visitors from Oklahoma are not required to present a negative COVID-19 PCR test or antigen result upon entering Northern Ireland.
Quarantine requirements
Visitors from Oklahoma are not required to quarantine after entering Northern Ireland.