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Cheap flights from Belfast to Seattle (SEA) from $343

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 9/6. 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.
BHD — SEA
May 13 — May 201
From?
To?
Mon 5/13
Mon 5/20
1 adult, Economy
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When is the cheapest time to fly from Belfast to Seattle (BFS - SEA)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast to Seattle as you normally would.

Cheap American Airlines flights from Belfast to Seattle

Explore cheap flight options specifically provided by American Airlines for the route between Belfast and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Peruse some of the lowest-priced American Airlines flights we've found from Belfast to Seattle. Make sure to check back often as deals are often changing.
Wed 9/2511:50 amBHD - SEA
1 stop13h 55mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/7$733
Wed 9/256:50 amBHD - SEA
1 stop12h 45mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/6$735
Wed 9/256:50 amBHD - SEA
2 stops22h 21mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/7$739
Wed 9/259:50 amBHD - SEA
2 stops20h 55mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/6$741
Wed 9/259:50 amBHD - SEA
1 stop15h 55mAmerican Airlines
Sun 9/297:40 pmSEA - BHD
1 stop13h 55mAmerican Airlines
Deal found 5/7$771
Wed 9/259:50 amBHD - SEA
1 stop15h 55mAmerican Airlines
Sun 9/297:40 pmSEA - BHD
1 stop15h 00mAmerican Airlines
Deal found 5/6$773
Tue 6/44:20 pmBHD - SEA
2 stops37h 37mAmerican Airlines
Tue 6/117:40 pmSEA - BHD
1 stop13h 45mAmerican Airlines
Deal found 5/8$822
Tue 6/49:45 amBHD - SEA
2 stops21h 20mAmerican Airlines
Tue 6/115:10 amSEA - BHD
2 stops26h 10mAmerican Airlines
Deal found 5/7$823
Sun 9/15:35 pmBHD - SEA
2 stops33h 45mAmerican Airlines
Sat 9/711:50 pmSEA - BHD
2 stops25h 15mAmerican Airlines
Deal found 5/8$867

Cheap KLM flights from Belfast to Seattle

Explore cheap flight options specifically provided by KLM for the route between Belfast and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Have a look at some of the cheapest available KLM flights departing from Belfast and landing in Seattle. Check back soon if you're not seeing flights that suit your needs.
Tue 6/45:20 pmBHD - SEA
1 stop25h 00mKLM
Tue 6/116:05 pmSEA - BHD
1 stop14h 45mKLM
Deal found 5/7$803
Tue 6/45:20 pmBHD - SEA
1 stop25h 00mKLM
Tue 6/116:05 pmSEA - BHD
1 stop14h 45mKLM
Deal found 5/8$825

Cheap Belfast to Seattle flights in May & June 2024

Find cheap flight options from Belfast to Seattle 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.
Check out some of the best flight deals from Belfast to Seattle in 2024. Check back regularly for other flight deals.
Tue 6/45:20 pmBHD - SEA
1 stop25h 00mKLM
Tue 6/116:05 pmSEA - BHD
1 stop14h 45mKLM
Deal found 5/7$803
Tue 6/45:20 pmBHD - SEA
2 stops30h 54mDelta
Tue 6/116:05 pmSEA - BHD
1 stop14h 45mDelta
Deal found 5/7$808
Tue 6/44:20 pmBHD - SEA
2 stops37h 37mAmerican Airlines
Tue 6/117:40 pmSEA - BHD
1 stop13h 45mAmerican Airlines
Deal found 5/8$822
Tue 6/49:45 amBHD - SEA
2 stops21h 20mAmerican Airlines
Tue 6/115:10 amSEA - BHD
2 stops26h 10mAmerican Airlines
Deal found 5/7$823
Tue 6/45:20 pmBHD - SEA
1 stop31h 15mDelta
Tue 6/116:05 pmSEA - BHD
1 stop14h 45mDelta
Deal found 5/8$825
Tue 6/45:20 pmBHD - SEA
2 stops29h 58mDelta
Tue 6/116:05 pmSEA - BHD
1 stop14h 45mDelta
Deal found 5/8$830
Sat 6/155:20 pmBHD - SEA
1 stop25h 00mMultiple Airlines
Sat 8/171:30 pmSEA - BHD
1 stop19h 20mMultiple Airlines
Deal found 5/8$1,018
Sat 6/155:20 pmBHD - SEA
1 stop25h 00mDelta
Sat 8/1711:55 amSEA - BHD
2 stops20h 55mDelta
Deal found 5/8$1,042
Sat 6/154:15 pmBHD - SEA
2 stops35h 33mAmerican Airlines
Sat 8/171:26 pmSEA - BHD
2 stops19h 24mAmerican Airlines
Deal found 5/8$1,074

Belfast to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Belfast and Seattle 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.
Check out some of the best flight deals from Belfast to Seattle in 2024. Check back regularly for other flight deals.
Wed 9/2511:50 amBHD - SEA
1 stop13h 55mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/7$733
Wed 9/256:50 amBHD - SEA
1 stop12h 45mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/6$735
Wed 9/256:50 amBHD - SEA
2 stops22h 21mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/7$739
Wed 9/259:50 amBHD - SEA
2 stops20h 55mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/6$741
Wed 9/259:50 amBHD - SEA
1 stop15h 55mAmerican Airlines
Sun 9/297:40 pmSEA - BHD
1 stop13h 55mAmerican Airlines
Deal found 5/7$771
Wed 9/259:50 amBHD - SEA
1 stop15h 55mAmerican Airlines
Sun 9/297:40 pmSEA - BHD
1 stop15h 00mAmerican Airlines
Deal found 5/6$773
Tue 6/45:20 pmBHD - SEA
1 stop31h 15mDelta
Tue 6/116:05 pmSEA - BHD
1 stop14h 45mDelta
Deal found 5/7$803
Tue 6/45:20 pmBHD - SEA
2 stops30h 54mDelta
Tue 6/116:05 pmSEA - BHD
1 stop14h 45mDelta
Deal found 5/7$808
Tue 6/44:20 pmBHD - SEA
2 stops37h 37mAmerican Airlines
Tue 6/117:40 pmSEA - BHD
1 stop13h 45mAmerican Airlines
Deal found 5/8$822

One-way flights to Seattle from Belfast

Search for one-way flight options from Belfast to Seattle. 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.
Take a look at some of the one-way flights we've detected from Belfast to Seattle. Those needing a return flight from Belfast to Seattle can use the search form above.
Fri 9/62:30 pmBFS - SEA
2 stops57h 38mMultiple Airlines
Deal found 5/6$343
Fri 9/66:00 amBFS - SEA
3 stops42h 08mMultiple Airlines
Deal found 5/6$387
Fri 9/67:00 amBHD - SEA
3 stops33h 45mMultiple Airlines
Deal found 5/6$533
Fri 9/66:50 pmBHD - SEA
2 stops33h 31mMultiple Airlines
Deal found 5/6$628
Fri 9/68:05 pmBHD - SEA
1 stop29h 25mAer Lingus
Deal found 5/6$1,159

Find flights from Belfast to Seattle within your budget

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

Fly from

Any airport

Fly to

Any airport

Budget

$733 - $1,018

Route

Depart

Return

Price

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 9/25

1 stop13h 55m

Seattle/Tacoma Intl

Sun 9/29

2 stops25h 05m

$733

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 9/25

1 stop12h 45m

Seattle/Tacoma Intl

Sun 9/29

2 stops25h 05m

$735

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 9/25

2 stops22h 21m

Seattle/Tacoma Intl

Sun 9/29

2 stops25h 05m

$739

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 9/25

2 stops20h 55m

Seattle/Tacoma Intl

Sun 9/29

2 stops25h 05m

$741

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Tue 6/4

1 stop25h 00m

Seattle/Tacoma Intl

Tue 6/11

1 stop14h 45m

$803

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Tue 6/4

2 stops30h 54m

Seattle/Tacoma Intl

Tue 6/11

1 stop14h 45m

$808

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Tue 6/4

1 stop25h 00m

Seattle/Tacoma Intl

Tue 6/11

1 stop14h 45m

$825

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Tue 6/4

2 stops29h 58m

Seattle/Tacoma Intl

Tue 6/11

1 stop14h 45m

$830

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Sat 6/15

1 stop25h 00m

Seattle/Tacoma Intl

Sat 8/17

1 stop19h 20m

$1,018

Flights are sorted by cheapest first

Deals found on 5/7

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

Use this chart to determine the cheapest time to fly round-trip from Belfast to Seattle. Price data was last updated on March 31, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Belfast to Seattle flight should consider departing on Sunday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

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 May 8, 2024.
To help decide which airline to fly from Belfast to Seattle, see what other customers have to say about American Airlines, KLM and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,789 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.1
Very good
10,789 reviews
Delta
8.1
Very good
10,789 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

KLM
7.9
Good
1,592 reviews
Delta
8.1
Very good
10,789 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

American Airlines
7.3
Good
14,677 reviews
Delta
8.1
Very good
10,789 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Aer Lingus
7.2
Good
1,338 reviews
Delta
8.1
Very good
10,789 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from Belfast 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?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Belfast to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Belfast; the airport handles an average of 0 inbound flights from Belfast per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Seattle airport from Belfast. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

  • Can I find flights from Belfast to Seattle for under $800 on Cheapflights?

    Yes, there are multiple flights from Belfast to Seattle for under $800. The cheapest flight booked recently is on American Airlines for just $733, but on average you can expect to pay $877.

  • What does BFS to SEA mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Belfast Intl Airport to Seattle/Tacoma Intl Airport flight would often be abbreviated as a BFS to SEA flight. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Belfast City Airport (BHD), Glasgow Prestwick Airport (PIK), Londonderry Eglinton Airport (LDY), Isle of Islay Glenegedale Airport (ILY), Campbeltown Machrihanish Airport (CAL).

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast 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.

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

    Many airlines flying from Belfast to Seattle 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 Belfast to Seattle?

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

    The Belfast to Seattle flight deals you see on this page were last updated on 5/8.

See more FAQs

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Search flights from Belfast to Seattle by cabin class

Find flights from Belfast to Seattle, 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 Belfast to Seattle?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Belfast to Seattle. 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 Belfast to Seattle?

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Need flexible booking options for your flight to Seattle from Belfast? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for Belfast to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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