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$741+ Cheap flights from Belfast City (BHD) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SEA
may. 6 — may. 131
mar. 5/6
mar. 5/13
1 adult, Economy
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Cheap flight deals from Belfast City to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Belfast City (BHD) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated mayo 1, 2025.

Round-trip from

$802
(KLM)

Popular in

July

Cheapest in

May

Average price

$585
From Belfast City to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($196 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
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Find flight deals from Belfast City to Seattle

Cheapest flights from Belfast City to Seattle
Explore the most affordable flight options available from Belfast City to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.

This KLM deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/85:25 pmBHD - SEA
1 stop30h 32mKLM
jue. 5/226:07 pmSEA - BHD
1 stop19h 08mKLM
Deal found 4/30$741
This British Airways deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/86:35 amBHD - SEA
1 stop13h 00mBritish Airways
jue. 5/221:30 pmSEA - BHD
1 stop15h 45mBritish Airways
Deal found 4/30$746
This American Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/87:25 pmBHD - SEA
1 stop24h 10mMultiple Airlines
jue. 5/221:30 pmSEA - BHD
1 stop13h 40mMultiple Airlines
Deal found 4/30$765
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/86:30 amBHD - SEA
2 stops19h 20mDelta
jue. 5/226:07 pmSEA - BHD
1 stop19h 08mDelta
Deal found 4/30$804
This American Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/86:35 amBHD - SEA
1 stop13h 00mAmerican Airlines
jue. 5/221:30 pmSEA - BHD
1 stop15h 45mAmerican Airlines
Deal found 4/30$819

Cheapflights Fare Finder

Customize your flight search to find flights from Belfast City to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated mayo 1, 2025.
Use the filters below to find and compare flights from Belfast City Airport to Seattle that are best for you.

Fly from

Belfast City

Fly to

Seattle

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 5/21

6:30 am-3:57 pm

1 stop17h 27m

Seattle/Tacoma Intl

vie. 5/30

1:55 pm-9:15 pm

1 stop23h 20m

$802

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 5/21

11:30 am-10:47 pm

2 stops19h 17m

Seattle/Tacoma Intl

vie. 5/30

4:00 pm-6:15 pm

2 stops18h 15m

$950

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 7/30

10:00 am-9:43 pm

2 stops19h 43m

$1,095

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 7/30

8:15 pm-11:35 am

1 stop23h 20m

$1,109

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Best time to book a flight from Belfast City to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Belfast City with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Belfast City Airport to Seattle

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated mayo 1, 2025.
To help decide which airline to fly from Belfast to Seattle, see what other customers have to say about KLM and British Airways. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,334 reviews

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,334 reviews
KLM
7.8
Good
1,334 reviews

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
British Airways
6.6
Okay
6,842 reviews
KLM
7.8
Good
1,334 reviews

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Related info for your journey

Find useful and relevant information for your journey from Belfast City to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Belfast City?

    If you book a flight to Seattle from Belfast City, you will be flying to 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 Belfast City to Seattle/Tacoma Intl per day from 0 different airlines.

  • What are the cheapest airlines flying from Belfast City Airport to Seattle round-trip?

    Our cheapest airline available from Belfast City Airport to Seattle is KLM. Our recent data shows that you can find tickets from as low as $802 on this airline. An additional option worth looking into is British Airways, starting at $950.

  • Can I find deals for flights from Belfast City to Seattle that include hotel bookings?

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

  • How can I find direct flights from Belfast City to Seattle?

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

  • Can I find deals for business class flights from Belfast City to Seattle?

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

  • What is the cheapest month to book a flight from Belfast City Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Belfast City Airport to Seattle (average of $238). Flying from Belfast City Airport to Seattle in July is currently the most expensive (average of $405). 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.

See more FAQs

Traveling to a place near Belfast City Airport?

Book flights to Belfast City Airport if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Lynnwood
Aberdeen
Shelton
Silverdale
Redmond
Issaquah

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Belfast Intl to Seattle flights

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