Shannon to Seattle (SNN–BFI) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
SNN–BFI has no scheduled airline service; it is flown by charter / private operators. 1-stop connecting options are also available.
Connection Landscape
Other ways to reach Seattle from Shannon
| Metric | SNN→BFI | DUB→BFI |
|---|---|---|
| Distance from SNN | – | 121 mi |
| Nonstop airlines | – | 1 |
| Weekly flights | ~1 | – |
| Flight time | 8h 20m | 8h 33m |
Travel Essentials
SNN: IST · BFI: PDT
When it's 6:00 PM in Shannon, it's 10:00 AM in Seattle.
Irish passport holders enter the United States visa-free under the Visa Waiver Program (VWP) for stays up to 90 days. An approved ESTA (Electronic System for Travel Authorization) is required before boarding. The ESTA costs $21, is valid for 2 years or until the passport expires (whichever comes first), and covers multiple entries. Apply at esta.cbp.dhs.gov at least 72 hours before departure, though most approvals come within minutes.
Passport must be an ePassport (biometric chip, all current Irish passports qualify). No supporting documents are formally required for ESTA approval, but CBP officers at the port of entry may ask for proof of onward travel, accommodation details, and sufficient funds. The 90-day VWP stay cannot be extended and does not allow a change of immigration status. If you need more than 90 days, apply for a B-1/B-2 visa at the US Embassy in Dublin (MRV fee $185, interview wait times vary from 1 to 6 weeks).
Direct flights from Dublin to the US serve New York (JFK/EWR), Boston, Chicago, Washington Dulles, Los Angeles, San Francisco, and several others, running 7 to 10 hours. Shannon also has direct US routes. US Customs and Border Protection preclearance operates at Dublin and Shannon, meaning you clear US immigration before boarding and arrive as a domestic passenger. The US dollar is the only currency. No vaccination requirements for Irish arrivals.
SNN–BFI Quick Facts
Frequently Asked Questions
Flights from SNN to BFI
Shannon Airport (SNN) and King County International Airport - Boeing Field (BFI) are connected through multiple connecting hub airports.
SNN to BFI Flight Duration and Schedule
Nonstop flight time from SNN to BFI is about 8 hours 20 minutes gate to gate. The route covers a distance of 4,483 miles (7,215 km).
Connecting Options and Alternatives
1-stop connecting options are also available. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Dublin (DUB).