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Among airlines operating Hong Kong to Hanoi flights:

• HK Express: offers free seat selection
• Cathay Pacific: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

4 airlines operate flights between Hong Kong and Hanoi. The airlines offering nonstop flights on this route include:

• Cathay Pacific
• Vietnam Airlines
• HK Express
• Sun PhuQuoc Airways

Flights from Hong Kong to Hanoi usually depart from Hong Kong Intl (HKG) and arrive at Hanoi Noibai (HAN).

Here are some options for this route, based on selected ticket types and cabin classes:

• HK Express: a cabin bag and a checked bag in Economy Class
• Vietnam Airlines: a cabin bag and a checked bag in Economy Class
• Sun PhuQuoc Airways: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Three cabin classes are available on flights from Hong Kong to Hanoi:

• Economy Class
• Premium Economy Class
• Business Class

On this route, nonstop flights are cheaper than layover options on average. Nonstop fares average $215 round-trip, compared to $265 via a layover through Manila Ninoy Aquino Intl (MNL).

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $20–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Airbus A321neo family is used most often on this route, operated mainly by HK Express and Sun PhuQuoc Airways. Other aircraft seen on the route include Airbus A321-100/200 variants.

Most connecting flights from Hong Kong to Hanoi pass through Manila Ninoy Aquino Intl (MNL), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

On the Hong Kong to Hanoi route, being flexible with your departure day can save you up to 8%. Sunday is the cheapest day at $208 round-trip on average, while Saturday is the most expensive at $226: a $18 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Hong Kong to Hanoi route, 24% of flights were delayed in the past 3 months, with delays averaging 1 hour 49 minutes.

Afternoon is the busiest departure period on Hong Kong to Hanoi flights, with 60% of flights leaving in that window. Morning departures account for 40%, evening flights for 0%, and night flights for 0%.

Some of the most popular sights in Hanoi are Hoan Kiem Lake, Old City Gate and Hanoi Opera House. These are among the most viewed places in Hanoi on KAYAK.

These are the earliest and latest flight times available from Hong Kong to Hanoi:

• Earliest: departs at 7:35 am and lands at 9:47 am
• Latest: departs at 4:55 pm and lands at 7:07 pm.

The flight takes about 2h 12m.

Last-minute fares on this route - booked within 2 weeks of departure - run 14% above the route average of $215. Book 15 weeks before departure for the lowest fares.

A nonstop flight from Hong Kong to Hanoi takes 2h 12m, covering 525 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

One-way fares from Hong Kong to Hanoi are currently higher than usual. Average one-way flight prices are about $190, which is 52% above the typical average for this route.

HK Express is slightly above the route average for timely arrivals, while Hong Kong Airlines has a lower on-time arrival rate. On-time arrival rates on Hong Kong to Hanoi flights are:

• HK Express: 90% on time
• Hong Kong Airlines: 78% on time
• Cathay Pacific: 74% on time

Overall, flights on this route are on time 76% of the time on average.

Morning flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Hanoi is 1 hour behind Hong Kong (Indochina Time vs Hong Kong Time). Plan for the time shift when scheduling connections or first-day activities.

Round-trip flights from Hong Kong to Hanoi range from $166 to $284, with an average of $215 over the past 12 months. Anything below $166 counts as a good deal.