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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 6 of the best tour operators to South East Asia. November is the most popular month to travel to South East Asia and we have 511 departures available.
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11 trips (511 trip Departures)
21 Day Vietnam & Cambodia Intro with Intro Travel
Tour
 (3)

21 Days Hanoi to Siem Reap
Operated By: Intro Travel
Departures: Mar 2026 to Nov 2027
Trip Styles: Small Group, 18-30's, Scenic
Visit: Vietnam, Cambodia
Exclusive Savings
From
US$2,659
Save 145
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
Ships: Emerald Harmony
Departures: Apr 2026 to Nov 2027
Rivers: Mekong
Visit: Vietnam, Cambodia
Preferred Plus Fare + Reduced Air Offer
Select Fare
Exclusive Savings
Inside
-
River View
$6,823
Balcony
$6,962
Suite
$9,394
From
US$6,823
Save 412
Per Person
View Trip
21 Day Thailand, Malaysia and Singapore Escapade with Contiki
Tour

21 Days Bangkok to Singapore
Operated By: Contiki
Departures: May 2026 to Mar 2027
Trip Styles: Coach, 18-30's, Scenic
Visit: Thailand, Malaysia, Singapore
Big Flash Sale
Exclusive Savings
From
US$3,580
Save 478
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
US$2,621
Save 558
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 Nov 2027
Rivers: Mekong
Visit: Vietnam, Cambodia
Preferred Plus Fare + Reduced Air Offer
Select Fare
Exclusive Savings
Inside
-
River View
$6,454
Balcony
$6,911
Suite
$9,394
From
US$6,454
Save 412
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 Dec 2026
Visit: Vietnam, Cambodia
Exclusive Savings
From
US$3,211
Save 108
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: Jul 2026 to Aug 2027
Trip Styles: Adventure, Small Group
Visit: Indonesia
Exclusive Savings
From
US$3,009
Save 640
Per Person
View Trip
21 Day Epic Vietnam to Cambodia with Intrepid Travel
Tour

21 Days Hanoi to Bangkok
Operated By: Intrepid Travel
Departures: Mar 2026 to Dec 2027
Trip Styles: Adventure, Small Group, Rail, 18-30's
Visit: Vietnam, Cambodia, Thailand
Exclusive Savings
From
US$1,525
Save 170
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: Apr 2026 to Dec 2028
Visit: Malaysia, Thailand, Singapore
Exclusive Savings
From
US$1,469
Save 630
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
Exclusive Savings
From
US$3,269
Save 101
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: Apr 2026 to Dec 2026
Trip Styles: Adventure, Small Group, 18-30's
Visit: Indonesia
Exclusive Savings
From
US$1,643
Save 776
Per Person
View Trip
Results: 11 results

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