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Cheap flights from Shannon to the United States from £400

SNN — LAX
4 Oct — 11 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

Sat 12/912:30 -
Nonstop7h 25m
Sat 19/907:30 -
1 stop19h 00m
Deal found 3/9£400
Sat 12/912:30 -
Nonstop7h 25m
Tue 22/909:15 -
1 stop17h 15m
Deal found 2/9£401
Fri 11/909:30 -
2 stops17h 26m
Fri 18/909:15 -
2 stops17h 15m
Deal found 3/9£404
Thu 17/909:30 -
1 stop20h 27m
Sat 26/922:50 -
Nonstop6h 25m
Deal found 4/9£406
Fri 11/909:30 -
1 stop14h 55m
Fri 18/915:25 -
1 stop11h 05m
Deal found 2/9£412
Thu 10/913:05 -
2 stops27h 39m
Mon 14/909:35 -
2 stops20h 35m
Deal found 2/9£433
Fri 11/913:05 -
2 stops24h 42m
Sun 13/910:35 -
2 stops19h 35m
Deal found 3/9£434
Sun 15/1107:50 -
1 stop16h 45m
Sun 22/1121:35 -
1 stop14h 10m
Deal found 31/8£463
Thu 17/1220:05 -
1 stop22h 45m
Mon 11/121:35 -
1 stop14h 10m
Deal found 31/8£466
Fri 4/1207:50 -
2 stops16h 23m
Fri 11/1215:29 -
2 stops15h 01m
Deal found 2/9£468
Fri 6/1120:05 -
1 stop25h 10m
Mon 9/1118:35 -
1 stop11h 55m
Deal found 2/9£498
Wed 7/1021:15 -
2 stops39h 03m
Sun 11/1015:51 -
2 stops14h 29m
Deal found 2/9£529

Find flight deals from Shannon to USA

Round-trip from

£401

Popular in

July

Cheapest in

November

Average price

£509

Good round-trip deal

£320 or less
United Airlines
  • United Airlines
  • 6/10-21/10
  • Nonstop
  • 13h 50m total
  • Shannon to USA
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£53 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Shannon to USA.
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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

ShannonNewark

SNN Shannon - EWR Newark

SNNEWR

Shannon

Thu 17/9

09:30-00:57

1 stop20h 27m

Newark

Sat 26/9

22:50-10:15

Nonstop6h 25m

£406

ShannonPhiladelphia

SNN Shannon - PHL Philadelphia

SNNPHL

Shannon

Mon 30/11

17:30-16:15

1 stop27h 45m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£431

ShannonNew York

SNN Shannon - LGA New York LaGuardia

SNNLGA

Shannon

Mon 23/11

07:50-21:29

2 stops18h 39m

New York LaGuardia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£437

ShannonNewark

SNN Shannon - EWR Newark

SNNEWR

Shannon

Tue 12/1

20:05-13:50

1 stop22h 45m

Newark

Tue 19/1

18:30-11:30

1 stop12h 00m

£464

ShannonNewark

SNN Shannon - EWR Newark

SNNEWR

Shannon

Sun 15/11

07:50-19:35

1 stop16h 45m

Newark

Sun 22/11

21:35-16:45

1 stop14h 10m

£464

ShannonNew York

SNN Shannon - LGA New York LaGuardia

SNNLGA

Shannon

Tue 2/3

07:50-17:48

2 stops14h 58m

New York LaGuardia

Tue 9/3

16:05-11:30

2 stops14h 25m

£467

ShannonNewark

SNN Shannon - EWR Newark

SNNEWR

Shannon

Sat 31/10

07:50-20:35

1 stop16h 45m

Newark

Fri 6/11

18:30-15:45

1 stop16h 15m

£494

ShannonPhiladelphia

SNN Shannon - PHL Philadelphia

SNNPHL

Shannon

Fri 6/11

17:30-13:40

1 stop25h 10m

Philadelphia

Mon 9/11

16:25-16:45

2 stops19h 20m

£498

ShannonPhiladelphia

SNN Shannon - PHL Philadelphia

SNNPHL

Shannon

Fri 8/1

17:30-16:15

1 stop27h 45m

Philadelphia

Mon 11/1

16:40-16:45

2 stops19h 05m

£499

ShannonNew York

SNN Shannon - LGA New York LaGuardia

SNNLGA

Shannon

Wed 7/10

21:15-07:18

2 stops39h 03m

New York LaGuardia

Sun 11/10

15:51-11:20

2 stops14h 29m

£529

Flights are sorted by cheapest return flights first.

Deals found on 1/9

Showing 1-10 of 36 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 £315). Flying from Shannon, Clare to USA in August is currently the most expensive (average of £611). 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 209 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
1,745 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.3

Entertainment

7.0

Comfort

7.2

Boarding

7.5

Reviews

1 / 20
10.0
Excellent

Patrick,Sept 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
Aer Lingus
7.3
Good
1,745 reviews
Aer Lingus
7.3
Good
1,745 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.3

Entertainment

7.0

Comfort

7.2

Boarding

7.5

Reviews

1 / 20
10.0
Excellent

Patrick,Sept 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.

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 19h 29m. There are 3085 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 - Newark or Shannon - Austin Bergstrom 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 £315). Flying from Shannon, Clare to USA in August is currently the most expensive (average of £611). 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£475Average£565FlexibilityNo 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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