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Shannon

$382+ Cheap flights from Washington to Shannon (SNN)

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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SNN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Washington to Shannon

Keep the following information in mind while searching for Washington to Shannon flight deals. Data was last updated September 17, 2025.

Round-trip from

$436
(American Airlines)

One-way from

$382
(American Airlines)

Popular in

June

Cheapest in

July

Average price

$686
From Washington to Shannon
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One-way flight from Washington to Shannon
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Highest demand for flights based on searches. 5% potential increase in price ($46 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 September 2025
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Find flight deals from Washington to Shannon

Cheapest flights from Washington to Shannon
Explore the most affordable flight options available from Washington to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This American Airlines deal was found by Cheapflights users on 9/15. 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.
Sun 11/26:50 pmSEA - SNN
1 stop13h 55mAmerican Airlines
Tue 11/187:50 amSNN - SEA
1 stop17h 05mAmerican Airlines
Deal found 9/15$436
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 10/147:00 amSEA - SNN
2 stops19h 15mUnited Airlines
Tue 10/2112:30 pmSNN - SEA
2 stops17h 04mUnited Airlines
Deal found 9/16$500
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Fri 10/241:30 pmSEA - SNN
1 stop13h 50mAmerican Airlines
Tue 10/287:50 amSNN - SEA
2 stops20h 58mAmerican Airlines
Deal found 9/16$618
This Gotogate deal was found by Cheapflights users on 9/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/28:00 pmSEA - SNN
2 stops36h 45mAir Canada
Tue 11/187:50 amSNN - SEA
2 stops19h 26mAir Canada
Deal found 9/15$639
This Air Canada deal was found by Cheapflights users on 9/14. 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.
Wed 11/123:15 pmPDX - SNN
2 stops36h 15mAir Canada
Sun 11/168:05 pmSNN - PDX
2 stops45h 10mAir Canada
Deal found 9/14$685
This British Airways deal was found by Cheapflights users on 9/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/211:30 pmSEA - SNN
1 stop13h 50mBritish Airways
Fri 10/318:05 pmSNN - SEA
1 stop23h 25mBritish Airways
Deal found 9/16$687
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 11/1211:43 amPDX - SNN
2 stops21h 02mAmerican Airlines
Sun 11/167:50 amSNN - PDX
1 stop16h 05mAmerican Airlines
Deal found 9/14$689
This British Airways deal was found by Cheapflights users on 9/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/218:20 pmSEA - SNN
1 stop31h 00mBritish Airways
Mon 10/278:05 pmSNN - SEA
1 stop23h 25mBritish Airways
Deal found 9/16$695
This British Airways deal was found by Cheapflights users on 9/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/211:30 pmSEA - SNN
1 stop13h 50mBritish Airways
Tue 10/287:50 amSNN - SEA
2 stops21h 10mBritish Airways
Deal found 9/16$705
This Air Canada deal was found by Cheapflights users on 9/16. 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.
Tue 10/215:30 amSEA - SNN
2 stops31h 05mAir Canada
Wed 10/298:05 pmSNN - SEA
2 stops33h 01mAir Canada
Deal found 9/16$709
This American Airlines deal was found by Cheapflights users on 9/17. 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.
Wed 9/2411:18 amPDX - SNN
2 stops20h 52mAmerican Airlines
Wed 10/17:40 amSNN - PDX
2 stops24h 25mAmerican Airlines
Deal found 9/17$723
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/165:00 amPDX - SNN
2 stops18h 30mUnited Airlines
Tue 9/239:30 amSNN - PDX
1 stop13h 55mUnited Airlines
Deal found 9/15$802

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Shannon 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 September 17, 2025.
Use the filters below to find and compare flights from Washington to Shannon that are best for you.

Fly from

Washington

Fly to

Shannon

Route

Depart

Return

Price

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 11/2

6:50 pm-4:45 pm

1 stop13h 55m

Shannon

Tue 11/18

7:50 am-4:55 pm

1 stop17h 05m

$436

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 3/1

5:45 pm-4:45 pm

1 stop15h 00m

Shannon

Sun 3/8

7:50 am-3:55 pm

1 stop16h 05m

$485

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 3/5

6:00 am-11:30 am

2 stops21h 30m

Shannon

Wed 3/11

7:50 am-4:55 pm

1 stop16h 05m

$489

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 10/14

7:00 am-10:15 am

2 stops19h 15m

Shannon

Tue 10/21

12:30 pm-9:34 pm

2 stops17h 04m

$500

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 3/12

7:50 pm-4:45 pm

1 stop13h 55m

Shannon

Sun 3/15

7:50 am-5:55 pm

1 stop17h 05m

$536

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 10/24

1:30 pm-11:20 am

1 stop13h 50m

Shannon

Tue 10/28

7:50 am-9:48 pm

2 stops20h 58m

$618

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 11/2

8:00 pm-4:45 pm

2 stops36h 45m

Shannon

Tue 11/18

7:50 am-7:16 pm

2 stops19h 26m

$639

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 11/12

3:15 pm-11:30 am

2 stops36h 15m

Shannon

Sun 11/16

8:05 pm-9:15 am

2 stops45h 10m

$685

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 11/12

5:45 pm-4:45 pm

1 stop15h 00m

Shannon

Sun 11/16

7:50 am-3:55 pm

1 stop16h 05m

$685

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 10/22

1:30 pm-11:20 am

1 stop13h 50m

Shannon

Fri 10/31

8:05 pm-12:30 pm

1 stop23h 25m

$687

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 17 results
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Best time to book a flight from Washington to Shannon

Have a flexible travel schedule? Discover the best time to fly to Shannon from Washington 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 Washington to Shannon

What is the cheapest month to book a flight from State of Washington to Shannon, Clare?

Currently, February is the cheapest month in which you can book a flight from State of Washington to Shannon, Clare (average of $533). Flying from State of Washington to Shannon, Clare in June is currently the most expensive (average of $928). 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.

What is the cheapest time of day to fly from WA to SNN?

Find hourly flight availability from Washington to Shannon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

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

Related info for your journey

Find useful and relevant information for your journey from Washington to Shannon. 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 Shannon from Washington?

    Located just 2.1 mi from the city center, Shannon (SNN) is the airport most travelers will use when flying to Shannon from Washington.

  • How long is the flight from State of Washington to Shannon, Clare?

    For as low as $436, American Airlines can have you in Shannon, Clare from State of Washington in 13h 55m. Airlines will cover a distance of 4485 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from State of Washington to Shannon, Clare one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $382. Users have also found prices from $389 and $634 on United Airlines and Air Canada, respectively.

  • Can I find deals for flights from Washington to Shannon that include hotel bookings?

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

  • How can I find direct flights from Washington to Shannon?

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

  • Can I find deals for business class flights from Washington to Shannon?

    Yes. Cheapflights offers flight deals from Washington to Shannon 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 State of Washington to Shannon, Clare?

    Currently, February is the cheapest month in which you can book a flight from State of Washington to Shannon, Clare (average of $533). Flying from State of Washington to Shannon, Clare in June is currently the most expensive (average of $928). 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

Traveling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Ennis

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Alternative routes for Washington to Shannon

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Top 3 airlines flying from Washington to Shannon

Discover the top 3 airlines that operate flights from Washington to Shannon. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$541Average$623FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$593Average$768FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$715Average$797FlexibilityNo cancel feeOn-timeN/A

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