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Cheap flights from Seattle (SEA) to Belfast from $453

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — BHD
Jun 11 — Jun 181
From?
To?
Tue 6/11
Tue 6/18
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 June 6, 2024.

Popular in

June

Cheapest in

April

Round-trip from

$640

One-way from

$540
High demand for flights, 29% potential price rise
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Best time to find cheap flights, 31% potential price drop
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From Seattle/Tacoma Intl to Belfast
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One-way flight from Seattle/Tacoma Intl to Belfast
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What is the cheapest day to fly round-trip from Seattle to Belfast?

Sunday is generally a great day to depart. Flying on this day could help you save up to 50%.

What is the cheapest month to fly from Seattle to Belfast?

Our data shows that April tends to be the cheapest month to fly to Belfast from Seattle. Users have commonly found prices around $1,036 for the month, but tickets can be as low as $719. Due to multiple factors, prepare for potentially higher prices in June.

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

A simple way to save on the total cost of your ticket is to fly from Seattle to Belfast at noon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.

Cheap Seattle to Belfast flights in June & July 2024

Find cheap flight options from Seattle to Belfast specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on June 6, 2024.
These are some of the best deals we've found on flights to Belfast in 2024 at this time. Check back in a little while for more flight options.
Tue 7/21:30 pmSEA - BHD
1 stop13h 05mAmerican Airlines
Tue 7/94:20 pmBHD - SEA
2 stops37h 38mAmerican Airlines
Deal found 6/5$1,114
Tue 7/21:25 pmSEA - BHD
2 stops21h 30mAmerican Airlines
Tue 7/94:20 pmBHD - SEA
2 stops37h 38mAmerican Airlines
Deal found 6/5$1,118
Mon 6/101:25 pmSEA - BHD
2 stops20h 00mAmerican Airlines
Wed 6/126:50 amBHD - SEA
1 stop18h 55mAmerican Airlines
Deal found 6/6$1,203
Mon 6/1012:25 pmSEA - BHD
2 stops21h 00mAmerican Airlines
Wed 6/126:50 amBHD - SEA
2 stops23h 07mAmerican Airlines
Deal found 6/6$1,232
Mon 6/107:40 pmSEA - BHD
1 stop11h 55mBritish Airways
Wed 6/129:50 amBHD - SEA
1 stop15h 55mBritish Airways
Deal found 6/6$1,304
Mon 6/105:55 amSEA - BHD
3 stops31h 15mMultiple Airlines
Wed 6/127:05 amBHD - SEA
2 stops21h 30mMultiple Airlines
Deal found 6/6$1,345
Tue 7/21:30 pmSEA - BHD
1 stop13h 05mBritish Airways
Tue 7/96:35 amBHD - SEA
1 stop13h 00mBritish Airways
Deal found 6/5$1,420
Mon 6/105:55 amSEA - BHD
3 stops31h 15mMultiple Airlines
Wed 6/124:55 pmBHD - SEA
3 stops28h 15mMultiple Airlines
Deal found 6/6$1,452

Seattle to Belfast 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Belfast in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
These are some of the best deals we've found on flights to Belfast in 2024 at this time. Check back in a little while for more flight options.
Tue 10/157:40 pmSEA - BHD
1 stop13h 45mBritish Airways
Thu 10/246:35 amBHD - SEA
1 stop19h 10mBritish Airways
Deal found 6/6$545
Tue 10/157:40 pmSEA - BHD
1 stop15h 15mBritish Airways
Thu 10/2412:45 pmBHD - SEA
2 stops18h 00mBritish Airways
Deal found 6/6$555
Tue 10/152:45 pmSEA - BHD
2 stops18h 40mAmerican Airlines
Thu 10/2412:45 pmBHD - SEA
2 stops18h 00mAmerican Airlines
Deal found 6/6$590
Tue 10/297:45 pmSEA - BHD
1 stop15h 50mAmerican Airlines
Sun 11/35:35 amBHD - SEA
1 stop18h 10mAmerican Airlines
Deal found 6/6$595
Tue 10/291:39 pmSEA - BHD
2 stops20h 01mAmerican Airlines
Sun 11/35:35 amBHD - SEA
1 stop18h 10mAmerican Airlines
Deal found 6/6$599
Tue 10/295:27 pmSEA - BHD
2 stops20h 08mAmerican Airlines
Sun 11/39:40 amBHD - SEA
2 stops21h 12mAmerican Airlines
Deal found 6/6$610
Sat 9/711:59 pmSEA - BHD
2 stops25h 06mBritish Airways
Sat 9/216:55 pmBHD - SEA
1 stop24h 35mBritish Airways
Deal found 6/6$678
Wed 8/147:20 amSEA - BHD
2 stops22h 05mBritish Airways
Tue 8/207:30 pmBHD - SEA
2 stops34h 10mBritish Airways
Deal found 6/5$689
Wed 8/147:20 amSEA - BHD
2 stops22h 05mBritish Airways
Tue 8/207:30 pmBHD - SEA
2 stops34h 10mBritish Airways
Deal found 6/6$690

One-way flights to Belfast from Seattle

Search for one-way flight options from Seattle to Belfast. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Users in need of a one-way flight from Seattle to Belfast can choose from these deals. Users can also find round-trip Seattle to Belfast flights by using the search form above.
Fri 7/2611:00 pmSEA - BHD
2 stops34h 20mMultiple Airlines
Deal found 6/5$453
Fri 7/2611:00 pmSEA - BFS
2 stops38h 00mMultiple Airlines
Deal found 6/5$479
Thu 6/137:00 amSEA - BHD
3 stops49h 30mMultiple Airlines
Deal found 6/6$493
Fri 7/266:10 pmSEA - BHD
1 stop14h 40mKLM
Deal found 6/4$540
Fri 7/266:10 pmSEA - BHD
1 stop14h 40mDelta
Deal found 6/5$550
Fri 7/266:45 pmSEA - BHD
2 stops17h 10mAer Lingus
Deal found 6/4$572
Thu 6/137:00 amSEA - BHD
2 stops29h 45mMultiple Airlines
Deal found 6/6$721
Thu 6/136:05 pmSEA - BHD
1 stop14h 45mDelta
Deal found 6/5$747
Thu 6/1311:59 pmSEA - BFS
3 stops35h 16mMultiple Airlines
Deal found 6/6$797

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 3,050,429 searches. Data last updated June 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$545 - $986

Route

Depart

Return

Price

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/15

1 stop13h 45m

Belfast City

Thu 10/24

1 stop19h 10m

$545

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/15

1 stop15h 15m

Belfast City

Thu 10/24

2 stops18h 00m

$555

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/15

2 stops18h 40m

Belfast City

Thu 10/24

2 stops18h 00m

$590

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

1 stop15h 50m

Belfast City

Sun 11/3

1 stop18h 10m

$595

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

2 stops20h 01m

Belfast City

Sun 11/3

1 stop18h 10m

$599

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

2 stops20h 08m

Belfast City

Sun 11/3

2 stops21h 12m

$610

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 9/7

2 stops25h 06m

Belfast City

Sat 9/21

1 stop24h 35m

$678

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 8/14

2 stops20h 55m

Belfast City

Tue 8/20

1 stop24h 55m

$814

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 8/14

1 stop14h 40m

Belfast City

Tue 8/20

1 stop24h 55m

$986

Flights are sorted by cheapest first

Deals found on 6/6

What is the cheapest day to fly from Seattle to Belfast?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Belfast. Price data was last updated on June 2, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Belfast flight should consider departing on Thursday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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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.

Temperature and rainfall in Belfast by month

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

BFS

Temperature

41 - 60.8 °F

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 June 6, 2024.
Peruse reviews from past customers who have flown with American Airlines, British Airways and Delta from Seattle to Belfast to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,368 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,489 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,227 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Aer Lingus
7.2
Good
1,287 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Lufthansa
7.0
Good
7,524 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

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.

  • Can I find flights from Seattle to Belfast for under $600 on Cheapflights?

    Yes, there are multiple flights from Seattle to Belfast for under $600. The cheapest flight booked recently is on British Airways for just $545, but on average you can expect to pay $735.

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

    Flying on British Airways is currently your cheapest option to Belfast, with prices starting at $545. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $590 and $814, respectively. British Airways is 47% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Belfast one-way?

    The cheapest airlines for a one-way flight from Seattle to Belfast are KLM ($540), Delta ($550), and Aer Lingus ($572).

  • What does SEA to BFS mean?

    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.

  • Can I find deals for flights from Seattle to Belfast that include extra baggage allowance?

    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.

  • Can I find deals on flights from Seattle to Belfast with specific airlines?

    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.

  • 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.

  • Can I find deals for flights from Seattle to Belfast that allow pets onboard?

    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.

  • Can I find deals on last-minute flights from Seattle to Belfast?

    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.

  • How recently were the Seattle to Belfast flight deals updated?

    The Seattle to Belfast flight deals you see on this page were last updated on 6/6.

  • 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 $1,214). 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 City flights
Portland 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 3,050,429 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$603Average$803FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$667Average$1,022FlexibilityNo cancel feeOn-time70%
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Search flights from Seattle to Belfast by cabin class

Find flights from Seattle to Belfast, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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