Find a good deal on your flight from Paris to Hanoi with Netflights. If you want to keep your options open, take a look at flights from another airport in Paris.
But when you fly is just as important as who you fly with. If you're flexible on dates, try searching by month to see when the cheapest flights are.
Or you could broaden your search by looking at flights to other airports in Vietnam to see if there are any cheaper options.
You can also compare the prices of hotels and hire cars for your stay in Vietnam. Simply use the tabs above, or add them to your booking once you’ve chosen your flight.