Cheap flights from Seattle (SEA) to Belfast from $446

If you book a flight to Belfast from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Seattle/Tacoma Intl to Belfast per day from 2 different airlines.

Yes, there are multiple flights from Seattle to Belfast for under $800. The cheapest flight booked recently is on British Airways for just $732, but on average you can expect to pay $1,408.

Flying on British Airways is currently your cheapest option to Belfast, with prices starting at $732. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $734 and $954, respectively. British Airways is 29% cheaper than the average price of flights available within the next 90 days to this destination.

The cheapest airlines for a one-way flight from Seattle to Belfast are Aer Lingus ($573), KLM ($580), and British Airways ($784).

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Seattle/Tacoma Intl Airport to Belfast Intl Airport flight would often be abbreviated as a SEA to BFS flight. Belfast City Airport (BHD), Glasgow Prestwick Airport (PIK), Londonderry Eglinton Airport (LDY), Isle of Islay Glenegedale Airport (ILY), Campbeltown Machrihanish Airport (CAL) are some additional IATA codes for airports related to your trip.

The amount of baggage you can bring on your Seattle to Belfast flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Yes, Cheapflights allows you to browse and filter Seattle to Belfast flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Yes. In addition to deals on Seattle to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Belfast.

Yes. Cheapflights offers flight deals from Seattle to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Many airlines flying from Seattle to Belfast offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Yes, you can often find last-minute deals on Seattle to Belfast flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

The Seattle to Belfast flight deals you see on this page were last updated on 5/21.

Currently, February is the cheapest month in which you can book a flight from Seattle to Belfast (average of $641). Flying from Seattle to Belfast in June is currently the most expensive (average of $1,181). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.