SYD to HPH, Sydney Airport to Cat Bi International Airport Cheap Flights

Based on HopeGoo data, VietJet Air offers one-way fares as low as US$172 on Cheapest nonstop routes (e.g. SYD to HPH on Sun, Mar 15), while VietJet Air offers Cheapest nonstop round-trips from US$371 departing on Wed, Mar 18 and returning on Sat, Mar 21.

At the moment, you can catch a nonstop flight from Sydney to Haiphong with the following airlines, including: VietJet Air Selected airlines are based on historical data collected from flight bookings users made on HopeGoo within the last 90 days.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Sydney to Haiphong is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

To find best deals on flights from Sydney to Haiphong, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Mar 15, with one-way flights priced at just US$172. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is VietJet Air. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for Haiphong travel is around December. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Sydney to Haiphong is October, when demand for travel is lower.

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Sydney to Haiphong on February 27, 2026 with VietJet Air, with prices starting at US$467.

You can land at any one of the following hubs in Haiphong, with Sydney Airport to Cat Bi International Airport (SYD-HPH) is by far the most common option on this route: Cat Bi International Airport (HPH).

The time difference between Haiphong and Sydney is 3h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your HopeGoo, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.