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$923+ Cheap flights from Seattle (SEA) to Belfast

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BHD
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Seattle to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Belfast (BF1). 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 November 21, 2024.

Popular in

June

Cheapest in

March

Round-trip from

$923
(American Airlines)
High demand for flights, 33% potential price rise
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Best time to find cheap flights, 32% potential price drop
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From Seattle/Tacoma Intl to Belfast
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Find flight deals from Seattle to Belfast

Cheapest flights from Seattle to Belfast
Explore the most affordable flight options available from Seattle to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This Air France deal was found by Cheapflights users on 11/20. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/242:05 pmSEA - BHD
1 stop22h 55mKLM
Tue 11/266:30 amBHD - SEA
2 stops22h 30mKLM
Deal found 11/20$981
This Booking.com deal was found by Cheapflights users on 11/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/242:00 pmSEA - BHD
2 stops17h 30mBritish Airways
Tue 11/266:35 amBHD - SEA
2 stops24h 49mBritish Airways
Deal found 11/20$1,109
This Mytrip deal was found by Cheapflights users on 11/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/243:20 pmSEA - BFS
3 stops21h 15mMultiple Airlines
Tue 11/265:30 pmBFS - SEA
2 stops31h 35mMultiple Airlines
Deal found 11/20$1,128
This Mytrip deal was found by Cheapflights users on 11/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/245:45 amSEA - BHD
3 stops30h 10mMultiple Airlines
Tue 11/267:25 amBHD - SEA
2 stops21h 05mMultiple Airlines
Deal found 11/20$1,263

Find flights from Seattle to Belfast within your budget

Customize your flight search to find flights from Seattle to Belfast 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 2,629,791 searches. Data last updated November 21, 2024.

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Fly to

Any airport

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Depart

Return

Price

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 1/4

6:50 pm-7:40 pm

1 stop16h 50m

Belfast City

Sat 1/11

6:30 am-11:20 am

1 stop12h 50m

$923

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 5/14

1:30 pm-1:25 pm

1 stop15h 55m

Belfast City

Sat 6/14

6:55 pm-11:30 am

1 stop24h 35m

$995

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 1/4

8:20 pm-4:50 pm

2 stops36h 30m

Belfast City

Sat 1/11

3:05 pm-6:55 pm

2 stops35h 50m

$1,022

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Sat 1/4

2:35 pm-9:40 pm

2 stops23h 05m

Belfast Intl

Sat 1/11

9:15 am-5:00 pm

2 stops15h 45m

$1,149

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 2/18

2:05 pm-9:00 pm

1 stop22h 55m

Belfast City

Wed 2/26

6:30 am-11:45 am

1 stop13h 15m

$3,705

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 2/19

6:15 am-4:50 pm

2 stops26h 35m

Belfast City

Thu 2/27

6:30 am-11:45 am

1 stop13h 15m

$3,710

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Best time to book a flight from Seattle to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Seattle 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.

Travel insights for flights from Seattle to Belfast

Get recent, data-driven insights about flights from Seattle to Belfast including ideal travel times, pricing trends, and more.

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

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 $1,183). 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.

What is the cheapest time of day to fly from SEA to BFS?

Find hourly flight availability from Seattle to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2024.

A simple way to save on the total cost of your ticket is to fly from Seattle to Belfast in the afternoon. If you’re flexible enough to do this you can expect to save up to 25% on your trip compared to booking a flight at noon.

Rainfall in Belfast by month

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

In terms of precipitation, rainfall in Belfast ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast when rainfall is around 2.0 in.

Temperature in Belfast by month

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

If weather is an important factor for your trip to Belfast, 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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated November 21, 2024.
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,758 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

British Airways
6.7
Okay
6,837 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Belfast. 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 from for flights from Seattle to Belfast?

    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.

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

    Flying on American Airlines is currently your cheapest option to Belfast, with prices starting at $923. Additional round-trip tickets that might be worth considering are offered by British Airways and KLM, with the lowest prices starting at $1,022 and $3,705, respectively. American Airlines is 4% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

  • Can I find deals for business class 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.

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

    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 $1,183). 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

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Alternative routes for Seattle to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Belfast Intl flights
Portland to Belfast Intl flights
Portland to Belfast City flights
Seattle to Belfast City flights

Top 2 airlines flying from Seattle to Belfast

Discover the top 2 airlines that operate flights from Seattle to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$544Average$967FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$573Average$791FlexibilityNo cancel feeOn-time71%
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