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$365+ Cheap flights from Seattle (SEA) to Galway, Ireland

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SNN
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from Seattle to Galway

Cheapest flights from Seattle to Galway
Explore the most affordable flight options available from Seattle to Galway. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This Ovago deal was found by Cheapflights users on 12/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:05 pmSEA - SNN
2 stops15h 20mAer Lingus
Sun 12/215:30 pmSNN - SEA
2 stops32h 50mAer Lingus
Deal found 12/2$869
This Expedia deal was found by Cheapflights users on 12/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/159:00 amSEA - SNN
1 stop13h 20mMultiple Airlines
Sun 12/218:05 pmSNN - SEA
2 stops34h 13mMultiple Airlines
Deal found 12/2$1,000
This FlightHub deal was found by Cheapflights users on 12/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:10 amSEA - SNN
2 stops24h 35mAir Canada
Sun 12/217:50 amSNN - SEA
3 stops33h 41mAir Canada
Deal found 12/2$1,591
This KAYAK deal was found by Cheapflights users on 12/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:29 pmSEA - SNN
2 stops36h 01mBritish Airways
Wed 12/317:50 amSNN - SEA
2 stops34h 12mBritish Airways
Deal found 12/2$1,777
This Arangrant deal was found by Cheapflights users on 12/3. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:48 pmSEA - SNN
2 stops19h 37mBritish Airways
Thu 12/117:50 amSNN - SEA
2 stops22h 09mBritish Airways
Deal found 12/3$8,262

Find flight deals from Seattle to Galway

Keep the following information in mind while searching for Seattle to Galway flight deals. Data was last updated December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$479
(American Airlines)

One-way from

$365
(American Airlines)

Popular in

June

Cheapest in

July

Average price

$795
Provider with most accurate pricing for Seattle/Tacoma Intl-Shannon flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Shannon flights.
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From Seattle/Tacoma Intl to Galway
Search Deals
One-way flight from Seattle/Tacoma Intl to Galway
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Galway 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 December 4, 2025.
Use the filters below to find and compare flights from Seattle to Galway that are best for you.

Fly from

Seattle

Fly to

Galway

Route

Depart

Return

Price

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

8:20 pm-8:35 pm

1 stop16h 15m

Shannon

Sat 4/25

7:40 am-9:46 pm

2 stops22h 06m

$479

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

12:25 pm-10:15 am

1 stop13h 50m

Shannon

Sat 4/25

12:30 pm-1:14 am

2 stops20h 44m

$492

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 1/16

2:04 pm-3:45 pm

2 stops17h 41m

Shannon

Fri 1/23

7:50 am-4:55 pm

1 stop17h 05m

$511

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 1/30

1:35 pm-11:30 am

1 stop13h 55m

Shannon

Tue 2/3

7:50 am-4:55 pm

1 stop17h 05m

$644

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 1/30

1:35 pm-3:45 pm

1 stop18h 10m

Shannon

Tue 2/3

8:05 pm-2:34 pm

2 stops50h 29m

$646

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 4/20

1:35 pm-8:35 pm

1 stop23h 00m

$365

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/21

6:45 pm-8:35 pm

2 stops17h 50m

$378

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/21

12:25 pm-10:15 am

1 stop13h 50m

$379

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 4/20

7:00 pm-12:15 am

3 stops45h 15m

$395

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 5/22

6:45 pm-4:05 pm

2 stops37h 20m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Best time to book a flight from Seattle to Galway

Have a flexible travel schedule? Discover the best time to fly to Galway 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Galway

What is the cheapest time of day to fly from SEA to G4W?

Find hourly flight availability from Seattle to Galway. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

It’s optimal to fly from Seattle to Galway at noon. By choosing this option you can save up to 5% on the cost of your flight, compared to a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Galway. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Galway flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Galway

Get insights into the airlines that provide service to Galway. 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 Galway. Reviews last updated December 4, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Aer Lingus from Seattle to Galway. 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.
United Airlines
7.4
Good
9,066 reviews

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,066 reviews
United Airlines
7.4
Good
9,066 reviews

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,047 reviews
United Airlines
7.4
Good
9,066 reviews

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Aer Lingus
7.2
Good
1,384 reviews
United Airlines
7.4
Good
9,066 reviews

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

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

    If you book a flight to Galway 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 Galway per day from 3 different airlines.

  • How long is the flight from Seattle to Galway?

    Airlines like American Airlines and United Airlines fly from Seattle to Galway in about 13h 50m. The time it takes to get you to your destination can typically vary by up to 2h 25m. The distance between Seattle and Galway is about 4485 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

See more FAQs

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Top 3 airlines flying from Seattle to Galway

Discover the top 3 airlines that operate flights from Seattle to Galway. 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 2,558,603 searches. Data last updated December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$488Average$623FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$593Average$761FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$759Average$815FlexibilityNo cancel feeOn-timeN/A

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