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Cheap flights from Shannon to the United States from £275

SNN — LAX
23 Oct — 30 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Shannon to USA

Enter your travel dates to find the best prices.

Cheapest flights from Shannon to USA

Mon 2/1114:40 -
Nonstop7h 40m
Mon 9/1118:50 -
Nonstop6h 20m
Deal found 18/9£338
Thu 5/1114:40 -
Nonstop7h 40m
Thu 12/1118:50 -
Nonstop6h 20m
Deal found 21/9£341
Wed 4/1114:40 -
Nonstop7h 40m
Thu 26/1118:50 -
Nonstop6h 20m
Deal found 21/9£344
Thu 5/1114:00 -
Nonstop7h 15m
Wed 11/1118:50 -
Nonstop6h 00m
Deal found 18/9£345
Fri 13/1114:40 -
Nonstop7h 40m
Thu 19/1118:50 -
Nonstop6h 20m
Deal found 18/9£345
Tue 3/1114:40 -
Nonstop7h 40m
Tue 10/1115:14 -
1 stop9h 36m
Deal found 19/9£405
Tue 6/1012:30 -
2 stops16h 29m
Wed 14/1020:25 -
1 stop8h 50m
Deal found 18/9£406
Thu 1/1012:30 -
1 stop11h 55m
Sat 10/1017:56 -
1 stop11h 19m
Deal found 21/9£407
Mon 2/1114:00 -
Nonstop7h 15m
Sun 8/1113:00 -
1 stop12h 10m
Deal found 23/9£407
Fri 6/1114:00 -
Nonstop7h 15m
Fri 13/1116:09 -
1 stop9h 01m
Deal found 22/9£408
Sun 1/1114:40 -
Nonstop7h 40m
Sun 8/1115:14 -
1 stop9h 36m
Deal found 22/9£408
Sat 14/1114:40 -
1 stop14h 08m
Mon 23/1118:50 -
Nonstop6h 00m
Deal found 22/9£413

Find flight deals from Shannon to USA

Round-trip from

£338

One-way from

£275

Popular in

July

Cheapest in

November

Average price

£516
Aer Lingus
  • Aer Lingus
  • 2/11-9/11
  • Nonstop
  • 14h 00m total
  • Shannon to USA
Search Deals
29/11-31/12
  • 29/11-31/12
  • 3 total stops
  • 27h 35m total
  • Shannon to USA
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£60 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Shannon to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ShannonBoston

SNN Shannon - BOS Boston Logan Intl

SNNBOS

Shannon

Sun 6/12

20:05-14:20

1 stop23h 15m

Boston Logan Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£342
Fastest return journey

ShannonBoston

SNN Shannon - BOS Boston Logan Intl

SNNBOS

Shannon

Mon 7/12

07:50-14:20

1 stop11h 30m

Boston Logan Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£343

ShannonBoston

SNN Shannon - BOS Boston Logan Intl

SNNBOS

Shannon

Sun 20/12

20:05-16:00

1 stop24h 55m

Boston Logan Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£343

ShannonNew York

SNN Shannon - JFK New York John F Kennedy Intl

SNNJFK

Shannon

Mon 23/11

07:50-16:00

1 stop13h 10m

New York John F Kennedy Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£343

ShannonBoston

SNN Shannon - BOS Boston Logan Intl

SNNBOS

Shannon

Wed 25/11

20:05-15:45

1 stop24h 40m

Boston Logan Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£344

ShannonNew York

SNN Shannon - JFK New York John F Kennedy Intl

SNNJFK

Shannon

Tue 2/3

14:40-17:20

Nonstop7h 40m

New York John F Kennedy Intl

Tue 9/3

18:50-06:10

Nonstop6h 20m

£344

ShannonChicago

SNN Shannon - ORD Chicago O'Hare Intl

SNNORD

Shannon

Sun 29/11

20:05-15:30

1 stop25h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£356

ShannonBoston

SNN Shannon - BOS Boston Logan Intl

SNNBOS

Shannon

Thu 18/3

07:50-16:25

1 stop12h 35m

Boston Logan Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£375

ShannonNew York

SNN Shannon - JFK New York John F Kennedy Intl

SNNJFK

Shannon

Fri 18/12

14:00-21:28

1 stop12h 28m

New York John F Kennedy Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£388

ShannonBoston

SNN Shannon - BOS Boston Logan Intl

SNNBOS

Shannon

Fri 6/11

14:00-16:15

Nonstop7h 15m

Boston Logan Intl

Thu 12/11

16:10-06:10

1 stop9h 00m

£408

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 43 resultsSorted by cheapest first
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Best time to book a flight from Shannon to USA

Have a flexible travel schedule? Discover the best time to fly to USA from Shannon with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Shannon to the United States

What is the cheapest month to book a flight from Shannon, Clare to USA?

Currently, January is the cheapest month in which you can book a flight from Shannon, Clare to USA (average of £319). Flying from Shannon, Clare to USA in August is currently the most expensive (average of £618). 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 SNN to US?

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

How often are flights from Shannon to the United States delayed?

About 7% of weekly flights between Shannon and United States have experienced delays in the past year, with the average delay time being 207 minutes.

What is the most punctual flight time for Shannon to the United States flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Shannon to the United States flights?

Over the past year, Aer Lingus have had the lowest number of delays on this route, with just 3% of flights being delayed.

How far ahead should I book a flight from Shannon, Clare to USA?

The best time to book flights from Shannon, Clare to USA is 56 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing USA

Get a feel of what it's like to fly with Aer Lingus from Shannon to the United States by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,783 reviews
Check prices

Comfort

7.2

Boarding

7.4

Food

6.7

Crew

8.1

Overall

7.3

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Michael,Sept 2026

DUB - JFK

Food and service was great. Wish the USB on the planes worked so I could charge and use my phone on the flight
Aer Lingus
7.3
Good
1,783 reviews
Aer Lingus
7.3
Good
1,783 reviews
Check prices

Comfort

7.2

Boarding

7.4

Food

6.7

Crew

8.1

Overall

7.3

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Michael,Sept 2026

DUB - JFK

Food and service was great. Wish the USB on the planes worked so I could charge and use my phone on the flight

Related info for your journey

  • What airport do you fly from for flights from Shannon to United States?

    Most people fly from Shannon (SNN) if they book a flight from Shannon to United States. Shannon is conveniently located just 2.1 mi from Shannon’s city center.

  • How long is the flight from Shannon, Clare to USA?

    Departing from Shannon, Clare to USA will take you 7h 40m. There are 3072 mi between Shannon, Clare and USA. This flight may include one or multiple stops.

  • What are the most popular routes from Shannon, Clare to USA?

    When deciding which route to take from Shannon, Clare to USA consider Shannon - Providence-TFGreen, Shannon - Austin Bergstrom or Shannon - Newark as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Shannon to USA 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 Shannon, Clare to USA?

    Currently, January is the cheapest month in which you can book a flight from Shannon, Clare to USA (average of £319). Flying from Shannon, Clare to USA in August is currently the most expensive (average of £618). 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

Top airline flying from Shannon to USA

AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£481Average£573FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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Cheapflights does show flights with no change fees to all users. To see these options for flights from Shannon to USA, users can toggle the no change fees filter when performing a flight search.

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