United's Polaris Business Class offers lie-flat seats and Saks Fifth Avenue bedding for restful long-haul travel.
United's Premium Plus offers larger seats, extra legroom, and upgraded meals on international routes.

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $353 (United Airlines) |
One-way from | $176 (Kiwi.com) |
Popular in | December |
Cheapest in | November |
Average price | $717 |
Good round-trip deal | $435 or less |
Good one-way deal | $238 or less |
Fly from
Fly to
Route
Depart
Return
Price
NewarkShannon
EWR - SNN
EWRSNN
Newark
mié. 4/8
10:40 pm-10:15 am
Nonstop6h 35m
Shannon
mié. 4/22
12:30 pm-2:50 pm
Nonstop7h 20m
NewarkShannon
EWR - SNN
EWRSNN
Newark
lun. 4/27
10:40 pm-10:15 am
Nonstop6h 35m
Shannon
dom. 5/3
12:30 pm-2:50 pm
Nonstop7h 20m
NewarkShannon
EWR - SNN
EWRSNN
Newark
mié. 4/29
10:40 pm-10:15 am
Nonstop6h 35m
Shannon
dom. 5/10
12:30 pm-2:50 pm
Nonstop7h 20m
NewarkShannon
EWR - SNN
EWRSNN
Newark
lun. 4/6
10:40 pm-10:15 am
Nonstop6h 35m
Shannon
lun. 4/13
12:30 pm-2:50 pm
Nonstop7h 20m
NewarkShannon
EWR - SNN
EWRSNN
Newark
mié. 4/29
10:40 pm-10:15 am
Nonstop6h 35m
Shannon
lun. 5/11
12:30 pm-2:50 pm
Nonstop7h 20m
BostonShannon
BOS - SNN
BOSSNN
Boston Logan Intl
mar. 4/28
5:45 am-10:15 am
2 stops23h 30m
Shannon
mar. 5/5
12:30 pm-5:25 pm
1 stop9h 55m
BostonShannon
BOS - SNN
BOSSNN
Boston Logan Intl
dom. 4/19
8:15 pm-10:15 am
1 stop9h 00m
Shannon
lun. 4/27
12:30 pm-6:19 pm
1 stop10h 49m
PhiladelphiaShannon
PHL - SNN
PHLSNN
Philadelphia
mar. 4/7
11:50 am-11:20 am
2 stops18h 30m
Shannon
mar. 4/14
9:15 pm-2:55 pm
2 stops22h 40m
New YorkShannon
LGA - SNN
LGASNN
New York LaGuardia
dom. 3/1
4:05 pm-6:20 am
1 stop9h 15m
Shannon
mar. 3/10
2:45 pm-9:12 pm
1 stop10h 27m
PhiladelphiaShannon
PHL - SNN
PHLSNN
Philadelphia
lun. 5/4
6:45 pm-11:20 am
1 stop11h 35m
Shannon
lun. 5/11
9:15 pm-3:55 pm
2 stops23h 40m
Currently, September is the cheapest month in which you can book a flight from USA to Shannon, Clare (average of $292). Flying from USA to Shannon, Clare in June is currently the most expensive (average of $463). 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.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from USA to Shannon, Clare as you normally would.
About 30% of weekly flights between United States and Shannon have experienced delays in the past year, with the average delay time being 171 minutes.
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Tuesday 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.
Over the last year, United Airlines have had the lowest number of delays on this route, with just 29% of flights being delayed.
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$244 | Average$761 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$361 | Average$698 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$371 | Average$790 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$377 | Average$707 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$396 | Average$710 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$423 | Average$701 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$565 | Average$817 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$932 | Average$1,500 | FlexibilityNo cancel fee | On-time62% |