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$585+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SNN
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Seattle to Galway

Keep the following information in mind while searching for Seattle to Galway flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$716
(United Airlines)

One-way from

$585
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$772
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
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One-way flight from Seattle/Tacoma Intl to Galway
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Highest demand for flights based on searches. 11% potential increase in price ($107 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find 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 May 1, 2025.

This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1611:04 amSEA - SNN
2 stops15h 11mUnited Airlines
Sat 10/2512:30 pmSNN - SEA
2 stops18h 58mUnited Airlines
Deal found 4/29$716
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2810:58 pmSEA - SNN
1 stop28h 12mDelta
Wed 7/161:05 pmSNN - SEA
2 stops18h 47mDelta
Deal found 4/30$817
This KLM deal was found by Cheapflights users on 5/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/107:20 amSEA - SNN
1 stop19h 50mMultiple Airlines
Tue 6/171:05 pmSNN - SEA
1 stop17h 44mMultiple Airlines
Deal found 5/1$819
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/168:20 pmSEA - SNN
1 stop16h 15mAmerican Airlines
Sat 10/257:40 amSNN - SEA
1 stop18h 40mAmerican Airlines
Deal found 4/29$979
This StudentUniverse deal was found by Cheapflights users on 4/29. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:21 amSEA - SNN
2 stops25h 59mAer Lingus
Sat 10/255:30 pmSNN - SEA
2 stops33h 45mAer Lingus
Deal found 4/29$1,459
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/123:36 pmSEA - SNN
2 stops20h 59mBritish Airways
Wed 5/217:40 amSNN - SEA
2 stops19h 16mBritish Airways
Deal found 4/30$1,676
This Air Canada deal was found by Cheapflights users on 4/30. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1211:30 amSEA - SNN
2 stops20h 40mAir Canada
Wed 5/217:40 amSNN - SEA
3 stops18h 53mAir Canada
Deal found 4/30$2,753

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 May 1, 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

Thu 10/16

11:04 am-10:15 am

2 stops15h 11m

Shannon

Sat 10/25

12:30 pm-11:28 pm

2 stops18h 58m

$716

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 6/28

10:58 pm-11:10 am

1 stop28h 12m

Shannon

Wed 7/16

1:05 pm-8:09 pm

1 stop15h 04m

$817

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 6/10

7:20 am-11:10 am

1 stop19h 50m

Shannon

Tue 6/17

1:05 pm-10:49 pm

1 stop17h 44m

$819

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 10/16

8:20 pm-8:35 pm

1 stop16h 15m

Shannon

Sat 10/25

7:40 am-6:20 pm

1 stop18h 40m

$979

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 10/15

1:21 am-11:20 am

2 stops25h 59m

Shannon

Sat 10/25

5:30 pm-7:15 pm

2 stops33h 45m

$1,459

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 5/12

3:36 pm-8:35 pm

2 stops20h 59m

Shannon

Wed 5/21

7:40 am-6:56 pm

2 stops19h 16m

$1,676

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 5/12

11:30 am-4:10 pm

2 stops20h 40m

Shannon

Wed 5/21

7:40 am-6:33 pm

3 stops18h 53m

$2,753

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 6/14

6:25 am-10:15 am

2 stops19h 50m

$585

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 6/12

12:05 am-3:50 pm

2 stops31h 45m

$2,505

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 May 1, 2025.

When flying from Seattle to Galway, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

Rainfall in Galway by month

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

In terms of precipitation, rainfall in Galway ranges from 2.3 - 4.1 inches per month. October is typically the wettest month, when rainfall can reach 4.1 in. April is typically the driest time to visit Galway when rainfall is around 2.3 in.

Temperature in Galway by month

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

If weather is an important factor for your trip to Galway, 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 42.8 F).

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 May 1, 2025.
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,254 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,076 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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 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.

  • 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.

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

    Currently, February is the cheapest month in which you can book a flight from Seattle to Galway (average of $533). Flying from Seattle to Galway in June is currently the most expensive (average of $995). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$541Average$768FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$563Average$764FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$703Average$797FlexibilityNo cancel feeOn-timeN/A

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