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Cheap flights from Seattle (SEA) to Belfast Intl (BFS) from $477

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 — BFS
May 13 — May 201
From?
To?
Mon 5/13
Mon 5/20
1 adult, Economy
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Cheap flight deals from Seattle to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Belfast Intl (BFS). 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 May 8, 2024.

Popular in

June

Cheapest in

April

Round-trip from

$640

One-way from

$542
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 Intl
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One-way flight from Seattle/Tacoma Intl to Belfast Intl
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What is the cheapest day to fly round-trip from Seattle to Belfast Intl Airport?

Thursday is generally a great day to depart. Flying on this day could help you save up to 51%.

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

Our data shows that April tends to be the cheapest month to fly to Belfast Intl Airport from Seattle. Users have commonly found prices around $1,037 for the month, but tickets can be as low as $719. Due to multiple factors, prepare for potentially higher prices in June.

When is the cheapest time to fly from Seattle to Belfast Intl Airport (SEA - BFS)?

A simple way to save on the total cost of your ticket is to fly from Seattle to Belfast Intl Airport at noon. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the morning.

Cheap Seattle to Belfast Intl flights in May & June 2024

Find cheap flight options from Seattle to Belfast Intl specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,338 searches. Prices were last updated on May 8, 2024.
Wed 6/57:00 amSEA - BFS
2 stops24h 30mMultiple Airlines
Wed 6/127:55 pmBFS - SEA
3 stops32h 40mMultiple Airlines
Deal found 5/7$996
Wed 6/57:00 amSEA - BFS
2 stops24h 30mMultiple Airlines
Wed 6/122:45 pmBFS - SEA
1 stop30h 25mMultiple Airlines
Deal found 5/7$1,118
Wed 6/57:00 amSEA - BFS
2 stops24h 30mMultiple Airlines
Wed 6/127:05 amBFS - SEA
2 stops18h 35mMultiple Airlines
Deal found 5/7$1,299

Seattle to Belfast Intl 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Belfast Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Tue 9/173:50 pmSEA - BFS
2 stops21h 20mMultiple Airlines
Sat 9/287:10 amBFS - SEA
3 stops39h 38mMultiple Airlines
Deal found 5/7$951
Tue 9/173:50 pmSEA - BFS
2 stops21h 20mMultiple Airlines
Sat 9/287:10 amBFS - SEA
2 stops21h 16mMultiple Airlines
Deal found 5/7$955
Tue 9/173:50 pmSEA - BFS
3 stops19h 50mMultiple Airlines
Sat 9/287:10 amBFS - SEA
3 stops39h 38mMultiple Airlines
Deal found 5/7$992
Wed 6/57:00 amSEA - BFS
2 stops24h 30mMultiple Airlines
Wed 6/127:55 pmBFS - SEA
3 stops32h 40mMultiple Airlines
Deal found 5/7$996
Wed 6/57:00 amSEA - BFS
2 stops24h 30mMultiple Airlines
Wed 6/122:45 pmBFS - SEA
1 stop30h 25mMultiple Airlines
Deal found 5/7$1,118
Wed 6/57:00 amSEA - BFS
2 stops24h 30mMultiple Airlines
Wed 6/127:05 amBFS - SEA
2 stops18h 35mMultiple Airlines
Deal found 5/7$1,299
Thu 7/46:55 pmSEA - BFS
2 stops14h 35mMultiple Airlines
Sun 7/147:00 amBFS - SEA
2 stops21h 21mMultiple Airlines
Deal found 5/7$2,008
Thu 7/41:50 pmSEA - BFS
3 stops21h 15mMultiple Airlines
Sun 7/147:00 amBFS - SEA
2 stops18h 40mMultiple Airlines
Deal found 5/7$2,094
Thu 7/46:15 pmSEA - BFS
2 stops35h 10mMultiple Airlines
Sun 7/1410:10 pmBFS - SEA
1 stop21h 25mMultiple Airlines
Deal found 5/7$3,875

One-way flights to Belfast Intl from Seattle

Search for one-way flight options from Seattle to Belfast Intl. 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 2,752,338 searches. Data last updated May 8, 2024.
Fri 7/2611:00 pmSEA - BFS
3 stops37h 10mMultiple Airlines
Deal found 5/7$477
Wed 6/57:00 amSEA - BFS
3 stops31h 00mMultiple Airlines
Deal found 5/7$493
Wed 6/57:00 amSEA - BFS
2 stops24h 30mMultiple Airlines
Deal found 5/7$504
Fri 7/261:50 pmSEA - BFS
2 stops15h 35mMultiple Airlines
Deal found 5/7$542
Tue 5/281:50 pmSEA - BFS
3 stops21h 50mMultiple Airlines
Deal found 5/7$566
Fri 5/311:50 pmSEA - BFS
2 stops15h 35mMultiple Airlines
Deal found 5/6$780
Tue 5/285:05 pmSEA - BFS
2 stops20h 05mMultiple Airlines
Deal found 5/7$794
Wed 6/52:30 pmSEA - BFS
1 stop17h 00mMultiple Airlines
Deal found 5/7$998

Find flights from Seattle to Belfast Intl within your budget

Customize your flight search to find flights from Seattle to Belfast Intl 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 2,752,338 searches. Data last updated May 8, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$951 - $3,875

Route

Depart

Return

Price

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Tue 9/17

2 stops21h 20m

Belfast Intl

Sat 9/28

3 stops39h 38m

$951

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Tue 9/17

2 stops21h 20m

Belfast Intl

Sat 9/28

2 stops21h 16m

$955

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Tue 9/17

3 stops19h 50m

Belfast Intl

Sat 9/28

3 stops39h 38m

$992

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Wed 6/5

2 stops24h 30m

Belfast Intl

Wed 6/12

3 stops32h 40m

$996

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Wed 6/5

2 stops24h 30m

Belfast Intl

Wed 6/12

1 stop30h 25m

$1,118

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Wed 6/5

2 stops24h 30m

Belfast Intl

Wed 6/12

2 stops18h 35m

$1,299

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Thu 7/4

2 stops14h 35m

Belfast Intl

Sun 7/14

2 stops21h 21m

$2,008

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Thu 7/4

3 stops21h 15m

Belfast Intl

Sun 7/14

2 stops18h 40m

$2,094

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Thu 7/4

2 stops35h 10m

Belfast Intl

Sun 7/14

1 stop21h 25m

$3,875

Flights are sorted by cheapest first

Deals found on 5/7

When is the cheapest time to fly from Seattle to Belfast Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Belfast Intl. Price data was last updated on May 5, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Belfast Intl Airport 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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Average price of flights to Belfast Intl by month

Plan your trip from Seattle to Belfast Intl by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to Belfast Intl is currently $644 while a round-trip flight costs $1,588. Price data was last updated on May 5, 2024.

Currently, February is the cheapest month in which you can book a flight from Seattle to Belfast Intl Airport (average of $641). Flying from Seattle to Belfast Intl Airport 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.

January

$685

February

$641

March

$690

April

$685

May

$781

June

$1,181

July

$991

August

$867

September

$769

October

$684

November

$658

December

$733

Temperature and rainfall in Belfast Intl by month

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

BFS

Temperature

41 - 60.8 °F

Related info for your journey

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

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Belfast Intl from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Belfast Intl should be relatively easy as there are 0 daily outbound flights to Belfast Intl from 2 different airlines.

  • Can I find flights from Seattle to Belfast Intl Airport for under $1,000 on Cheapflights?

    Yes, there are multiple flights from Seattle to Belfast Intl Airport for under $1,000. The cheapest flight booked recently is on Multiple Airlines for just $951, but on average you can expect to pay $1,587.

  • What does SEA to BFS mean?

    Great question - SEA to BFS just means Seattle/Tacoma Intl Airport to Belfast Intl Airport. Now you’ll know what these unique codes when you look for flights!

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

    The amount of baggage you can bring on your Seattle to Belfast Intl 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 Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Belfast Intl 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 Intl that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Belfast Intl 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 Intl that allow pets onboard?

    Many airlines flying from Seattle to Belfast Intl 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 Intl?

    Yes, you can often find last-minute deals on Seattle to Belfast Intl 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 Intl Airport flight deals updated?

    The Seattle to Belfast Intl Airport flight deals you see on this page were last updated on 5/7.

See more FAQs

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

Seattle to Belfast City flights

Top 2 airlines flying from Seattle to Belfast Intl

Discover the top 2 airlines that operate flights from Seattle to Belfast Intl. 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 2,752,338 searches. Data last updated May 8, 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$675Average$1,189FlexibilityNo cancel feeOn-time70%
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American AirlinesCheapest$681Average$820FlexibilityNo cancel feeOn-time71%
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Search flights from Seattle to Belfast Intl by cabin class

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

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Belfast Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Belfast Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Belfast Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Belfast Intl.

Can Cheapflights find flights from Seattle to Belfast Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Belfast Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle to Belfast Intl become cheaper?

Not ready to book yet? You can track prices for flights from Seattle to Belfast Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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