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Cheap flights from Shannon to the United States from £400

SNN — LAX
1 Oct — 8 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 19/922:50 -
Nonstop6h 25m
Deal found 1/9£400
Sun 15/1107:50 -
1 stop16h 45m
Sun 22/1121:35 -
1 stop14h 10m
Deal found 31/8£463
Mon 28/1207:50 -
1 stop16h 45m
Sun 3/121:35 -
1 stop14h 10m
Deal found 29/8£463
Wed 30/1220:05 -
1 stop22h 45m
Fri 8/118:30 -
1 stop12h 00m
Deal found 29/8£465
Thu 3/1207:50 -
2 stops16h 23m
Mon 7/1215:29 -
2 stops15h 01m
Deal found 30/8£467
Mon 12/1016:50 -
2 stops24h 00m
Mon 19/1018:45 -
1 stop11h 35m
Deal found 28/8£475
Thu 3/1207:50 -
2 stops18h 32m
Mon 7/1221:35 -
1 stop14h 10m
Deal found 30/8£476
Sat 5/1207:50 -
2 stops17h 10m
Fri 11/1215:29 -
2 stops15h 01m
Deal found 30/8£480
Sat 31/1007:50 -
1 stop16h 45m
Fri 6/1118:30 -
1 stop16h 15m
Deal found 31/8£494
Mon 19/1021:15 -
1 stop27h 10m
Fri 13/1118:30 -
1 stop16h 15m
Deal found 29/8£495
Fri 6/1120:05 -
1 stop25h 10m
Mon 9/1118:35 -
1 stop11h 55m
Deal found 30/8£497
Thu 29/1020:05 -
1 stop28h 30m
Sun 1/1114:20 -
2 stops21h 25m
Deal found 30/8£502

Find flight deals from Shannon to USA

Round-trip from

£400

Popular in

July

Cheapest in

November

Average price

£509

Good round-trip deal

£320 or less
United Airlines
  • United Airlines
  • 12/9-19/9
  • 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 24/12

07:50-19:35

1 stop16h 45m

Newark

Mon 4/1

18:30-11:30

1 stop12h 00m

£463

ShannonNewark

SNN Shannon - EWR Newark

SNNEWR

Shannon

Wed 30/12

20:05-13:50

1 stop22h 45m

Newark

Sat 9/1

21:35-16:45

1 stop14h 10m

£465

ShannonNewark

SNN Shannon - EWR Newark

SNNEWR

Shannon

Wed 30/12

20:05-13:50

1 stop22h 45m

Newark

Fri 8/1

18:30-11:30

1 stop12h 00m

£465

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

£497

ShannonPhiladelphia

SNN Shannon - PHL Philadelphia

SNNPHL

Shannon

Fri 8/1

20:05-16:15

1 stop25h 10m

Philadelphia

Mon 11/1

13:30-11:30

2 stops17h 00m

£497

ShannonNewark

SNN Shannon - EWR Newark

SNNEWR

Shannon

Tue 6/10

07:30-13:55

1 stop11h 25m

Newark

Wed 21/10

17:50-20:35

1 stop21h 45m

£527

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

£528

ShannonNew York

SNN Shannon - LGA New York LaGuardia

SNNLGA

Shannon

Fri 11/9

09:30-21:25

1 stop16h 55m

New York LaGuardia

Wed 16/9

15:25-07:30

1 stop11h 05m

£554
Fastest return journey

ShannonNew York

SNN Shannon - LGA New York LaGuardia

SNNLGA

Shannon

Fri 11/9

09:30-16:19

1 stop11h 49m

New York LaGuardia

Mon 14/9

13:25-07:30

1 stop13h 05m

£554

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 30 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 July is currently the most expensive (average of £600). 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 211 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?

Monday 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 90 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
1,736 reviews
Check prices

Crew

8.1

Entertainment

7.0

Comfort

7.2

Overall

7.3

Boarding

7.5

Food

6.7

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
1,736 reviews
Aer Lingus
7.3
Good
1,736 reviews
Check prices

Crew

8.1

Entertainment

7.0

Comfort

7.2

Overall

7.3

Boarding

7.5

Food

6.7

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 16h 45m. 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 - New York LaGuardia 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 July is currently the most expensive (average of £600). 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£474Average£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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