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3 Week Trips to South East Asia

Looking to explore South East Asia for 3 weeks? Then choose from our range of river cruises, adventures and guided tours with 8 of the best tour operators to South East Asia. October and November are the most popular months to travel to South East Asia and we have 599 departures available.
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14 trips (599 trip Departures)
21 Day Best of Vietnam and Cambodia with APT
River Cruise
 (6)

21 Days Hanoi to Siem Reap
Cruise Line: APT
Ships: Mekong Serenity
Departures: Aug 2026 to Apr 2028
Rivers: Mekong
Visit: Vietnam, Cambodia
Early Booking Savings
Exclusive Savings
Inside
-
River View
-
Balcony
$10,209
Suite
$12,164
From
A$10,209
Save 4,286
Per Person
View Trip
21 Day Best of Vietnam and Cambodia with APT
River Cruise
 (3)

21 Days Ho Chi Minh City to Ho Chi Minh City
Cruise Line: APT
Ships: Mekong Serenity
Departures: Aug 2026 to Apr 2028
Rivers: Mekong
Visit: Vietnam, Cambodia
Early Booking Savings
Exclusive Savings
Inside
-
River View
-
Balcony
$10,699
Suite
$12,654
From
A$10,699
Save 4,296
Per Person
View Trip
21 Day Vietnam & Cambodia Intro with Intro Travel
Tour
 (3)

21 Days Hanoi to Siem Reap
Operated By: Intro Travel
Departures: Jun 2026 to Nov 2027
Visit: Vietnam, Cambodia
Exclusive Savings
From
A$3,685
Save 120
Per Person
View Trip
21 Day Grand Tour of Vietnam & Cambodia with Emerald Cruises
River Cruise
 (6)

21 Days Hanoi to Siem Reap
Cruise Line: Emerald Cruises
Ship: Emerald Harmony
Departures: Oct 2026 to May 2028
Rivers: Mekong
Visit: Vietnam, Cambodia
Multiple Deals Available
Inside
-
River View
$9,032
Balcony
$9,924
Suite
$12,100
From
A$9,032
Save 1,698
Per Person
View Trip
21 Day Grand Tour of Vietnam & Cambodia with Emerald Cruises
River Cruise
 (6)

21 Days Hanoi to Ho Chi Minh City
Cruise Line: Emerald Cruises
Ships: Emerald Harmony
Departures: Oct 2026 to Apr 2028
Rivers: Mekong
Visit: Vietnam, Cambodia
Super Savings
Early Booking Savings
Super Earlybird
Exclusive Savings
Inside
-
River View
$9,718
Balcony
$10,610
Suite
$12,786
From
A$9,718
Save 1,698
Per Person
View Trip
21 Day Indonesia Adventure: Java & Bali with G Adventures
Tour

21 Days Jakarta to Gili Trawangan
Operated By: G Adventures
Departures: Jul 2026 to Dec 2026
Trip Styles: Adventure, Small Group, 18-30's
Visit: Indonesia
Exclusive Savings
From
A$2,400
Save 1,161
Per Person
View Trip
21 Day Indonesia: Java, Bali & Komodo Island with G Adventures
New ReleaseTour

21 Days Yogyakarta to Labuan Bajo
Operated By: G Adventures
Departures: Aug 2026 to Aug 2027
Trip Styles: Adventure, Small Group
Visit: Indonesia
Exclusive Savings
From
A$4,664
Save 935
Per Person
View Trip
21 Day Best of Java & Sumatra with G Adventures
New ReleaseTour

21 Days Medan to Surabaya
Operated By: G Adventures
Departures: Aug 2026 to Sep 2027
Trip Styles: Adventure, Small Group
Visit: Indonesia
Exclusive Savings
From
A$3,059
Save 1,450
Per Person
View Trip
21 Day Thailand, Malaysia and Singapore Escapade with Contiki
Tour

21 Days Bangkok to Singapore
Operated By: Contiki
Departures: Jul 2026 to Mar 2028
Trip Styles: Coach, 18-30's, Scenic
Visit: Thailand, Malaysia, Singapore
Exclusive Savings
From
A$5,215
Save 964
Per Person
View Trip
21 Day Epic Vietnam to Cambodia with Intrepid Travel
Tour

21 Days Hanoi to Bangkok
Operated By: Intrepid Travel
Departures: Jul 2026 to Dec 2028
Visit: Vietnam, Cambodia, Thailand
Exclusive Savings
From
A$1,850
Save 510
Per Person
View Trip
21 Day Mekong Explorer with Wendy Wu Tours
New ReleaseRiver Cruise

21 Days Hanoi to Siem Reap
Operated By: Wendy Wu Tours
Departures: Mar 2027 to Nov 2027
Rivers: Mekong
Visit: Cambodia, Vietnam
Exclusive Savings
From
A$10,662
Save 926
Per Person
View Trip
21 Day Southeast Asia: Hilltribes & Street Food with G Adventures
Tour

21 Days Bangkok to Singapore
Operated By: G Adventures
Departures: Jun 2026 to Dec 2028
Visit: Malaysia, Thailand, Singapore
Exclusive Savings
From
A$1,941
Save 932
Per Person
View Trip
21 Day Walking in Vietnam & Cambodia Highlights with Explore Worldwide
Tour

21 Days Hanoi to Siem Reap
Operated By: Explore Worldwide
Departures: Oct 2026 to Oct 2027
Visit: Vietnam, Cambodia
Sign Up Savings
Exclusive Savings
From
A$4,528
Save 416
Per Person
View Trip
21 Day Vietnam Explorer with Explore Worldwide
Tour

21 Days Hanoi to Ho Chi Minh city
Operated By: Explore Worldwide
Departure: 08 November 2026
Trip Styles: Adventure, Small Group
Visit: Vietnam
Sign Up Savings
Exclusive Savings
From
A$4,860
Save 360
Per Person
View Trip
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Departure Months

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Asia Cruises

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