What's the cheapest way to book a flight out of Hanoi to a third country without a local Vietnamese bank account (using a foreign card)?

Trip.com accepts foreign-issued Visa/Mastercard (including Russian cards) and many fares include free cancellation within 24 hours — useful if plans aren't finalized yet.

Official Vietnam Airlines and VietJet Air sites/apps accept Visa/Mastercard without needing a Vietnamese bank account — Mir cards don't work, but cards issued via Wise or similar services do.

Baolau.com aggregates flights, trains and buses across the region, accepts foreign cards, and is handy for a quick hop to a neighboring country without setting up a local account.

For comparing prices, check Google Flights or Skyscanner first, then book directly on the airline's site — this usually avoids extra fees charged by unverified third-party booking services.

If a Russian card doesn't work online, travel agencies in Hanoi's Old Quarter (around Hang Bac street) can book tickets offline and accept cash payment in Vietnamese dong.