Best time to go: what is the RIGHT price for a round-trip flight to Saint Lucia (Castries) (from: Dublin)

The average price to go to Saint Lucia (Castries) from Dublin airport is $ 991 (round trip). However, there are variations depending on the departure month. Thus, it is possible to pay for your plane ticket on average between $ 817 (in march) and $ 1230 (in december), which is a saving of $ 174 or a surplus of $ 240 (compared to the average price) depending on the period you leave.

The analysis of all prices reveals that the most frequent price is between $685 to $738 and it is generally more economical to leave on a thursday and return on a sunday on a flight with 1 or more layovers.

Be careful, the cheapest months may correspond to unfavorable weather periods . Check out our page best time to go to Saint Lucia (Castries) before booking your flight.

If you want to know when to book your flight at the best price, go straight to the second part of this page: When to buy your Dublin-Saint Lucia (Castries) plane ticket.

How are these data calculated?

We have studied a sample of 14755 airfare prices from previous years for flights to Saint Lucia (Castries) from Dublin and can thus establish precise and credible price variation trends based on different parameters. Of course, prices can vary from year to year, but the seasonal aspect of this data (recurrence of school holidays, events... from year to year) makes these statistics quite reliable.

Average price depending on the departure month

Data analysis:

By leaving in march, the price of the plane ticket will statistically be the cheapest ($ 817, saving $ 174 compared to the average price over the year which is $ 991). Conversely, december will be the most expensive ($ 1230).

Flight Dublin-Saint Lucia (Castries): when is the best time to go for the best price?

Month Good price* Average price Our opinion
January$ 772 $ 908 good price
February$ 778 $ 1026 fair price
March$ 715 $ 817 very good price
April$ 854 $ 1122 fair price
May$ 740 $ 889 good price
June$ 728 $ 898 good price
July$ 927 $ 1156 high price
August$ 1004 $ 1191 high price
September$ 682 $ 846 good price
October$ 755 $ 956 fair price
November$ 694 $ 846 good price
December$ 930 $ 1230 very high price

*great price to buy your plane ticket: if you see this price or cheaper during your flight search, go for it and buy it!

Price breakdown to travel from Dublin to Saint Lucia (Castries)

Data analysis:

The prices for flights from Dublin to Saint Lucia (Castries) range from $474 to $1476. 2% of tickets were purchased at the minimum price (from $475 to $527), 1% at the maximum price (from $1423 to $1476). The majority of plane tickets were purchased in the range of $685 to $738 (11% of tickets).

Cheapest airlines for the Dublin->Saint Lucia flight

There are 7 companies that serve Dublin from Saint Lucia (Castries) airport: British Airways, Aer Lingus, Air Canada, Ryanair, KLM, Delta and Air France.

Data analysis:

Of the 14755 flights analyzed in previous years, British Airways was the airline that offered the best fare most often in the flight ticket search results (50% of the time) on the Dublin->Saint Lucia route.

Which day of the week to leave?

Data analysis:

Statistically, Dublin-Saint Lucia (Castries) flights departing on a thursday are cheaper than on other days of the week. By choosing a thursday as your departure date, you can save an average of $46. On the other hand, departing on a sunday may cost you an additional $53.

Which day of the week to come back?

Data analysis:

Statistically, return flights from Saint Lucia (Castries) to Dublin departing on a sunday are cheaper than on other days of the week. By choosing a sunday for your return date, you will save an average of $72. Conversely, departing from Saint Lucia (Castries) on a saturday may cost you an additional $83.


Top prices Dublin-Saint Lucia (Castries)

Round tripDatesPrice
Dublin → Castries21-11 to 28-11-2024$ 696 
Dublin → Castries14-01 to 25-01-2025$ 637 
Dublin → Castries19-01 to 25-01-2025$ 637 
Dublin → Castries03-02 to 10-02-2025$ 699 
Dublin → Castries04-02 to 14-02-2025$ 656 
Dublin → Castries12-02 to 23-02-2025$ 769 
Dublin → Castries19-03 to 27-03-2025$ 634 
Dublin → Castries02-06 to 15-06-2025$ 673 
Dublin → Castries13-09 to 27-09-2025$ 682 
Dublin → Castries06-10 to 24-10-2025$ 692 


When to book your flight Dublin - Saint Lucia (Castries) to get the cheapest price?

Statistically, you will make the biggest savings by buying your plane ticket between 2 to 3 months in advance. However, you may end up paying a high price if you book between 11 to 12 months in advance.

Did you know: the price of plane tickets not only varies depending on how far in advance you book, but also on the day of the week you book! So, to maximize your chances of getting the best price for a Dublin-Saint Lucia flight, it is recommended to book your ticket on a saturday.

How far in advance should I buy my flight?

Data analysis:

To get the cheapest flight ticket from Dublin to Saint Lucia (Castries), it is recommended to buy it 2 to 3 months before departure (it is then on average 943 $, which is a saving of 48 $ compared to the overall average price). On the other hand, if you buy your ticket 11 to 12 months in advance, you will pay the full price (282 $ more than the average price).

Depending on the departure month

The best time to buy your Dublin to Saint Lucia (Castries) flight ticket may vary depending on your departure month. Therefore, we offer you statistics on when to book your flight month by month.

Departure on... How far in advance should I book?
January

Best time: 0 to 1 month before departure (average price: 846 $)

Other interesting period(s): 10 to 11 months ($ 902)

February

Best time: 1 to 2 months before departure (average price: 905 $)

Other interesting period(s): 0 to 1 month ($ 1010), 2 to 3 months ($ 1013)

March

Best time: 1 to 2 months before departure (average price: 781 $)

Other interesting period(s): 2 to 3 months ($ 789)

April

Best time: 6 to 7 months before departure (average price: 1007 $)

Other interesting period(s): 2 to 3 months ($ 1046), 3 to 4 months ($ 1008), 4 to 5 months ($ 1086), 5 to 6 months ($ 1030), 7 to 8 months ($ 1044), 8 to 9 months ($ 1078), 9 to 10 months ($ 1041)

May

Best time: 5 to 6 months before departure (average price: 824 $)

Other interesting period(s): 1 to 2 months ($ 868), 3 to 4 months ($ 839), 4 to 5 months ($ 882), 6 to 7 months ($ 837)

June

Best time: 8 to 9 months before departure (average price: 851 $)

Other interesting period(s): 0 to 1 month ($ 866), 1 to 2 months ($ 869), 2 to 3 months ($ 858), 6 to 7 months ($ 884)

July

Best time: 5 to 6 months before departure (average price: 1078 $)

Other interesting period(s): 1 to 2 months ($ 1149), 2 to 3 months ($ 1150), 3 to 4 months ($ 1117), 4 to 5 months ($ 1136), 6 to 7 months ($ 1142), 7 to 8 months ($ 1150)

August

Best time: 3 to 4 months before departure (average price: 1024 $)

Other interesting period(s): 1 to 2 months ($ 1144), 2 to 3 months ($ 1150), 4 to 5 months ($ 1149), 6 to 7 months ($ 1104), 7 to 8 months ($ 1118)

September

Best time: 8 to 9 months before departure (average price: 757 $)

Other interesting period(s): 1 to 2 months ($ 822), 2 to 3 months ($ 791), 3 to 4 months ($ 821), 4 to 5 months ($ 835), 5 to 6 months ($ 836), 6 to 7 months ($ 840), 7 to 8 months ($ 818)

October

Best time: 7 to 8 months before departure (average price: 856 $)

Other interesting period(s): 2 to 3 months ($ 928), 3 to 4 months ($ 916), 4 to 5 months ($ 903), 6 to 7 months ($ 950), 8 to 9 months ($ 870), 9 to 10 months ($ 857)

November

Best time: 7 to 8 months before departure (average price: 715 $)

Other interesting period(s): 1 to 2 months ($ 834), 2 to 3 months ($ 773), 3 to 4 months ($ 779), 5 to 6 months ($ 746), 8 to 9 months ($ 769)

December

Best time: 1 to 2 months before departure (average price: 1097 $)

Other interesting period(s): 0 to 1 month ($ 1212), 3 to 4 months ($ 1194), 5 to 6 months ($ 1196), 7 to 8 months ($ 1218)

What day of the week should I book my flight ticket?

Data analysis:

Statistically, saturday is the day when plane tickets for Dublin->Saint Lucia are the cheapest. So, by buying your plane ticket on a saturday, you will save $17. Conversely, by buying it on a sunday, you may end up paying $25 more.



Dublin to Saint Lucia (Castries): flight price when booking today

Information: this data is not statistics but comes from real prices collected less than 7 days ago. Some months may not be available as we do not have enough data for them.

Month Current price
November 2024$ 1135
$1135 to $1135
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December 2024$ 1171
$774 to $1830
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January 2025$ 1191
$637 to $1779
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February 2025$ 827
$656 to $971
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March 2025$ 634
$634 to $634
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April 2025$ 1004
$825 to $1236
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May 2025$ 1503
$1122 to $2262
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June 2025$ 673
$673 to $673
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July 2025$ 1511
$1511 to $1511
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August 2025$ 1103
$808 to $1528
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September 2025$ 682
$682 to $682
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October 2025$ 692
$692 to $692
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Data analysis:

Compared to the average price, december, february, march, april, june, august, september and october are cheaper to travel to Saint Lucia (Castries). So it may be interesting to book now to leave during these months!



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