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3 Week Adults Only Cruises

Explore our 3 week adults only cruises with 3 of the world's leading adults only cruise operators. December and March are the most popular months to join a cruise and we have 22 departures available and 21 unique itineraries to choose from.
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21 Cruises (22 Cruise Departures)
21 Day Transatlantic Crossing And Caribbean Celebration with Cunard
Cruise
 (3)

21 Days (20 Nights) New York to London
Cruise Line: Cunard
Ship: Queen Mary 2
Departure: 22 December 2025
Countries Visited: USA, Virgin Islands, Saint Kitts and Nevis, Antigua and Barbuda (+2 more), Sint Maarten, England
Exclusive Deal
INSIDE
$5,303
OCEANVIEW
$7,283
BALCONY
$7,481
SUITE
$18,123
From (per person) 5,303
View Trip
21 Day Sublime Southeast Asia with Oceania Cruises
Cruise
 (2)

21 Days (20 Nights) Mumbai to Singapore
Cruise Line: Oceania Cruises
Ship: Oceania Sirena
Departure: 11 March 2026
Countries Visited: India, Maldives, Sri Lanka, Thailand (+2 more), Malaysia, Singapore
Exclusive Deal
INSIDE
$9,998
OCEANVIEW
$10,889
BALCONY
$15,503
SUITE
$24,739
Save (per person) 2,082
From (per person) 9,998
View Trip
21 Day Glaciers To Timeless Japan with Oceania Cruises
Cruise
 (1)

21 Days (20 Nights) Seattle to Tokyo
Cruise Line: Oceania Cruises
Ship: Oceania Riviera
Departure: 18 September 2025
Countries Visited: USA, Japan
Bonus SavingsExclusive Deal
INSIDE
$6,723
OCEANVIEW
-
BALCONY
$9,004
SUITE
$13,424
Save (per person) 2,797
From (per person) 6,723
View Trip
21 Day Tasmania And South Pacific with Cunard
Cruise
 (9)

21 Days (20 Nights) Sydney to Sydney
Cruise Line: Cunard
Ship: Queen Elizabeth
Departure: 16 December 2024
Countries Visited: Australia, New Caledonia, Vanuatu, Fiji
Exclusive Deal
INSIDE
-
OCEANVIEW
-
BALCONY
-
SUITE
$41,587
From (per person) 41,587
View Trip
21 Day Grandeur Of The Ancients with Oceania Cruises
Cruise
 (1)

21 Days (20 Nights) Istanbul to Dubai
Cruise Line: Oceania Cruises
Ship: Oceania Nautica
Departure: 20 November 2025
Countries Visited: Turkey, Greece, Cyprus, Israel (+5 more), Jordan, Egypt, Saudi Arabia, Oman, United Arab Emirates
Exclusive Deal
INSIDE
$8,215
OCEANVIEW
$9,115
BALCONY
$12,986
SUITE
$18,788
Save (per person) 2,055
From (per person) 8,215
View Trip
21 Day Atlantic & Mediterranean Horizons with Viking Cruises
Cruise
 (6)

21 Days (20 Nights) Fort Lauderdale to Rome
Cruise Line: Viking Cruises
Ship: Viking Mars
Departures: Mar 2025 to Feb 2026
Countries Visited: USA, Sint Maarten, Portugal, Spain (+3 more), France, Monaco, Italy
Companion Fly Free
INSIDE
-
OCEANVIEW
-
BALCONY
$11,875
SUITE
$19,300
Save (per person) 963
From (per person) 11,875
View Trip
21 Day Empires & Explorers with Oceania Cruises
Cruise
 (2)

21 Days (20 Nights) Rome to Lisbon
Cruise Line: Oceania Cruises
Ship: Oceania Sirena
Departure: 18 October 2025
Countries Visited: Italy, Sicily, Malta, Tunisia (+5 more), Monaco, France, Spain, Portugal, Morocco
Bonus SavingsExclusive Deal
INSIDE
$7,239
OCEANVIEW
$7,944
BALCONY
$12,054
SUITE
$16,719
Save (per person) 2,431
From (per person) 7,239
View Trip
21 Day Adriatic & Aegean Icons with Oceania Cruises
Cruise
 (1)

21 Days (20 Nights) Rome to Istanbul
Cruise Line: Oceania Cruises
Ship: Oceania Nautica
Departure: 07 July 2025
Countries Visited: Italy, Sicily, Greece, Albania (+4 more), Montenegro, Croatia, Slovenia, Turkey
Exclusive Deal
INSIDE
$9,114
OCEANVIEW
$17,004
BALCONY
$16,104
SUITE
-
Save (per person) 2,066
From (per person) 9,114
View Trip
21 Day South Pacific And Australia with Cunard
Cruise
 (9)

21 Days (20 Nights) Sydney to Sydney
Cruise Line: Cunard
Ship: Queen Elizabeth
Departure: 22 January 2025
Countries Visited: Australia, New Caledonia, Fiji, Vanuatu
Exclusive Deal
INSIDE
-
OCEANVIEW
-
BALCONY
-
SUITE
$17,332
From (per person) 17,332
View Trip
21 Day Caribbean Panorama with Oceania Cruises
Cruise
 (1)

21 Days (20 Nights) Miami to Miami
Cruise Line: Oceania Cruises
Ship: Oceania Nautica
Departure: 03 December 2024
Countries Visited: USA, Mexico, Belize, Guatemala (+10 more), Honduras, Costa Rica, Panama, Colombia, Aruba, Curacao, Saint Lucia, Saint Barthelemy, Puerto Rico, Dominican Republic
Exclusive Deal
INSIDE
-
OCEANVIEW
$7,233
BALCONY
$9,619
SUITE
-
Save (per person) 2,047
From (per person) 7,233
View Trip
21 Day Pearls Of The Panama Canal with Oceania Cruises
Cruise
 (2)

21 Days (20 Nights) Miami to Miami
Cruise Line: Oceania Cruises
Ship: Oceania Sirena
Departure: 23 March 2025
Countries Visited: USA, Bahamas, Mexico, Guatemala (+9 more), Belize, Honduras, Costa Rica, Panama, Colombia, Aruba, Curacao, Bonaire, Jamaica
Bonus SavingsExclusive Deal
INSIDE
$7,818
OCEANVIEW
$8,352
BALCONY
$12,638
SUITE
-
Save (per person) 2,912
From (per person) 7,818
View Trip
21 Day Down Under To Indonesia with Oceania Cruises
Cruise

21 Days (20 Nights) Sydney to Singapore
Cruise Line: Oceania Cruises
Ship: Oceania Regatta
Departure: 10 March 2025
Countries Visited: Australia, Papua New Guinea, Indonesia, Singapore
Exclusive Deal
INSIDE
$8,214
OCEANVIEW
$8,966
BALCONY
$11,639
SUITE
$33,974
Save (per person) 2,056
From (per person) 8,214
View Trip
21 Day Extravagant Far East with Oceania Cruises
Cruise

21 Days (20 Nights) Hong Kong to Bali
Cruise Line: Oceania Cruises
Ship: Oceania Regatta
Departure: 03 June 2025
Countries Visited: Hong Kong, Vietnam, Cambodia, Thailand (+2 more), Singapore, Indonesia
Exotics Sale
INSIDE
$6,098
OCEANVIEW
$6,591
BALCONY
$8,866
SUITE
-
Save (per person) 6,132
From (per person) 6,098
View Trip
21 Day Panoramic Panama Canal with Oceania Cruises
Cruise

21 Days (20 Nights) San Diego to New York
Cruise Line: Oceania Cruises
Ship: Oceania Insignia
Departure: 03 July 2025
Countries Visited: USA, Mexico, Guatemala, Nicaragua (+3 more), Costa Rica, Colombia, Cayman Islands
Bonus SavingsExclusive Deal
INSIDE
$6,735
OCEANVIEW
$7,374
BALCONY
$11,043
SUITE
$16,420
Save (per person) 3,235
From (per person) 6,735
View Trip
21 Day Spectacular Antarctica with Oceania Cruises
Cruise

21 Days (20 Nights) San Antonio to Buenos Aires
Cruise Line: Oceania Cruises
Ship: Oceania Marina
Departure: 15 February 2026
Countries Visited: Chile, Argentina, Antarctica, Falkland Islands
Exclusive Deal
INSIDE
$8,964
OCEANVIEW
$10,300
BALCONY
$11,785
SUITE
$16,706
Save (per person) 2,066
From (per person) 8,964
View Trip
21 Day Antarctic Triumph with Oceania Cruises
Cruise

21 Days (20 Nights) San Antonio to Buenos Aires
Cruise Line: Oceania Cruises
Ship: Oceania Marina
Departure: 21 December 2025
Countries Visited: Chile, Argentina, Antarctica, Falkland Islands
Bonus SavingsExclusive Deal
INSIDE
$7,801
OCEANVIEW
$9,539
BALCONY
$10,742
SUITE
$15,303
Save (per person) 2,929
From (per person) 7,801
View Trip
21 Day Sunny Sands & Chic Strands with Oceania Cruises
Cruise

21 Days (20 Nights) Dubai to Barcelona
Cruise Line: Oceania Cruises
Ship: Oceania Vista
Departure: 13 May 2026
Countries Visited: United Arab Emirates, Oman, Saudi Arabia, Egypt (+5 more), Greece, Sicily, Italy, Sardinia, Spain
Exclusive Deal
INSIDE
-
OCEANVIEW
-
BALCONY
$12,688
SUITE
-
Save (per person) 2,102
From (per person) 12,688
View Trip
21 Day Panama Canal Connoisseur with Oceania Cruises
Cruise

21 Days (20 Nights) Tampa to Miami
Cruise Line: Oceania Cruises
Ship: Oceania Insignia
Departure: 25 March 2026
Countries Visited: USA, Mexico, Belize, Honduras (+7 more), Costa Rica, Panama, Colombia, Curacao, Aruba, Jamaica, Cayman Islands
Exclusive Deal
INSIDE
$8,678
OCEANVIEW
$9,569
BALCONY
$14,034
SUITE
$19,390
Save (per person) 2,052
From (per person) 8,678
View Trip
21 Day Southampton To Cape Town with Cunard
Cruise

21 Days (20 Nights) London to Cape Town
Cruise Line: Cunard
Ship: Queen Anne
Departure: 11 January 2026
Countries Visited: England, Portugal, Spain, Cape Verde (+2 more), Namibia, South Africa
Exclusive Deal
INSIDE
$4,332
OCEANVIEW
$6,966
BALCONY
$7,827
SUITE
$13,861
From (per person) 4,332
View Trip
21 Day Wonders Of Australia with Oceania Cruises
Cruise

21 Days (20 Nights) Sydney to Perth
Cruise Line: Oceania Cruises
Ship: Oceania Regatta
Departure: 22 December 2024
Countries Visited: Australia, Indonesia
Mutiple Deals Available
INSIDE
$5,781
OCEANVIEW
$6,137
BALCONY
$13,112
SUITE
$20,963
Save (per person) 5,909
From (per person) 5,781
View Trip
21 Day Australasian Adventure with Oceania Cruises
Cruise

21 Days (20 Nights) Taipei to Perth
Cruise Line: Oceania Cruises
Ship: Oceania Insignia
Departure: 14 April 2025
Countries Visited: Taiwan, Philippines, Malaysia, Brunei (+2 more), Indonesia, Australia
Mutiple Deals Available
INSIDE
$6,856
OCEANVIEW
$5,696
BALCONY
$7,080
SUITE
$14,581
Save (per person) 5,854
From (per person) 5,696
View Trip
Results: 21 results

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Cruise Themes

Adults Only Cruises Christmas & New Year Cruises Expedition Cruises Family Cruises Island Hopping Cruises Luxury Cruises Sailing Trips Short Cruises

Trip Lengths

3 Day 7 Day 10 Day 2 Week 3 Week 4 Week 1 Month

Departure Months

December 2024 January 2025 March 2025 April 2025 June 2025 July 2025 September 2025 October 2025 November 2025 December 2025 January 2026 February 2026 March 2026 May 2026

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