In order to arrive in Hanoi on October 19th, you will need to book a flight that leaves on October 17-18th due to the time change. 

You can find the lowest fares from websites such as Google flights, Sky Scanner, and Momondo; however, booking directly with airlines is a more reliable option. 

To give you an idea of pricing, as of 08/27, we found multi-city flights that fly from Chicago to Ho Chi Minh City and from Hanoi back to Chicago for $545.

It is extremely important to note that you should NOT buy a round trip ticket, as our trip will start in the south, in Ho Chi Minh City, and end in the north, in Hanoi. Choosing the multi-city option on flight websites will most often give you the best price rather than buying two separate flights. You can buy a round trip ticket, but please note that you will also have to purchase a ticket back to Ho Chi Minh City--usually around a $50 ticket). Unless you plan on extending your trip and staying in Hanoi on your own, the trip ends on October 29th, and we will have vans set up to take you to the airport.  

Please let us know if you would like us to help you book your flights. We are more than happy to help!