Cheap flights from Belfast to Seattle-Tacoma International

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs Cheapflights |
From
To
Leaving on
Depart
Time
Anytime
From
To
Leaving on
Depart
Time
Anytime
From
To
Leaving on
Depart
Time
Anytime
From
To
Leaving on
Depart
Time
Anytime
From
To
Leaving on
Depart
Time
Anytime
From
To
Leaving on
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

How to find the cheapest flight from
Belfast (BHD) to Seattle-Tacoma International (SEA)

What is the cheapest day to fly return from Belfast to Seattle-Tacoma International?

Flights from Belfast to Seattle-Tacoma International are generally found to be more expensive on Saturday. This shouldn't discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Seattle-Tacoma International.

How far in advance should I book a flight from Belfast to Seattle-Tacoma International?

Travellers have found it’s best to book a flight 52 days in advance to save up to 51% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 52 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Belfast to Seattle-Tacoma International 1-2 weeks in advance for as low as £455, or £596 for flights within the next 24 hours.

What is the cheapest month to fly from Belfast to Seattle-Tacoma International?

Our data shows that February tends to be the cheapest month to fly to Seattle-Tacoma International from Belfast. Users have commonly found prices around £402 for the month, but tickets can be as low as £264. Due to multiple factors, prepare for potentially higher prices in July.

When is the cheapest time to fly from Belfast to Seattle-Tacoma International (BF1 - SEA)?

It’s optimal to fly from Belfast to Seattle-Tacoma International in the morning. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight at midday.

Belfast to Seattle-Tacoma International 2021 flight deals

Cheap flights to Seattle-Tacoma International from Belfast found for this year
17 Mar - 21 Mar
£400pp
BHD
Belfast City
Virgin Atlantic
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Virgin Atlantic
 
1 STOP
BHD
Belfast City
29 Mar - 1 Apr
£411pp
BHD
Belfast City
Virgin Atlantic
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Virgin Atlantic
 
1 STOP
BHD
Belfast City
29 Mar - 1 Apr
£411pp
BHD
Belfast City
Virgin Atlantic
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Virgin Atlantic
   
2 STOPS
BHD
Belfast City

Related info for your journey

Useful info, stats and facts about Belfast to Seattle-Tacoma International flights.

Flight FAQs

From Belfast to Seattle-Tacoma International

Are flight prices decreasing from Belfast to Seattle due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Belfast and Seattle for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Belfast to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

United Airlines and British Airways are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Belfast to Seattle-Tacoma International for under £441 on Cheapflights?

Yes, there are multiple flights from Belfast to Seattle-Tacoma International for under £441. The cheapest flight booked recently is on Virgin Atlantic for just £400, but on average you can expect to pay £465.

Are there direct flights from Belfast to Seattle-Tacoma International for under £367 on Cheapflights?

There are no direct flights from Belfast to Seattle-Tacoma International, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Is Belfast weather warmer or cooler than Seattle?

We forecast the temperature to be around the 25 °Cs in July, on average. The temperature in Seattle is generally hotter than in Belfast. Book flights in a timely manner in correlation to your departure date.

How long does is the flight from Belfast to Seattle-Tacoma International?

Iberia, Virgin Atlantic, and KLM can get you from Belfast to Seattle-Tacoma International in just under 20h 56m. Your travel time can differ by up to 4h 55m. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to flying from Belfast to Seattle-Tacoma International return?

Flying on Virgin Atlantic is currently your cheapest option to Seattle-Tacoma International, with prices starting at £401. Additional return tickets that might be worth considering are offered by KLM and Iberia, with the lowest prices starting at £424 and £856, respectively. Virgin Atlantic is 43% cheaper than the average price of flights available within the next 90 days to this destination.

Destination information for Seattle-Tacoma International

Things to know before you go. Useful info for your trip from Belfast to Seattle-Tacoma International
Today's exchange rate
£1 = $1.37

Airports servicing Belfast

Belfast City (BHD)

Airports servicing Seattle

Home North America USA Washington Seattle Seattle-Tacoma International Cheap flights from Belfast to Seattle-Tacoma International