// Use when looking for airline promo codes, flash sales, or credit card discounts before booking. Triggers on promo code, discount, sale, deal, coupon, cashback, loyalty discount.
Use when planning flights, comparing ticket prices, or asking about flight costs, airline fees, travel dates, or route options. Triggers on booking flights, cheap tickets, flight search, vé máy bay, săn vé rẻ, tối ưu chi phí bay, đặt vé, virtual interlining, or any flight-related cost question.
Use when traveler has flexible dates and wants to find the cheapest departure/return combination. Triggers on cheapest day to fly, flexible dates, when to book, price calendar.
Use when advertised flight price seems too good, or when comparing LCC vs legacy carrier total costs. Triggers on hidden fees, baggage cost, true price, real cost, checkout surprise.
Use when deciding between flexible and non-refundable tickets, or when travel plans might change. Triggers on refundable vs non-refundable, cancel risk, change fee, should I buy flexible ticket.
Use when searching for flights, comparing airlines, or finding virtual interlining combinations across multiple carriers. Triggers on find flights, search routes, compare airlines, best price.
Use when user explicitly asks about hidden city ticketing, skiplagging, or throwaway ticketing. Requires explicit consent before analysis. Triggers on hidden city, skiplag, get off at layover.
| name | deals-verification |
| description | Use when looking for airline promo codes, flash sales, or credit card discounts before booking. Triggers on promo code, discount, sale, deal, coupon, cashback, loyalty discount. |
Stop wasting 30 minutes searching expired promo codes on Google. This skill leverages AI knowledge of airline promotional patterns, credit card partnerships, and seasonal deals to compile a curated list of potential savings, each tagged with a confidence level.
⚠️ MANDATORY DISCLAIMER (must appear in every output): All deals listed are based on AI knowledge of airline programs and promotional patterns. They have NOT been verified through live booking APIs. Always test at checkout before relying on any code. Expiry dates and conditions may have changed since AI's training data.
airlines[] from flight-search resultsroute (origin → destination)travel_datesbooking_type (personal/corporate)loyalty_programs[] from profilepayment_methods (credit cards available)Search knowledge across these categories (ordered by reliability):
Category A: Airline Official Programs (High confidence)
Category B: Card & Partner Deals (Medium confidence)
Category C: Public Coupon Codes (Low confidence)
For each potential deal, verify applicability:
route?travel_dates?fare_class?booking_window still open?minimum_spend requirements?DEALS FOUND FOR: VietJet, HAN → SGN, Jun 15-25, 2026
# Deal Confidence Savings Conditions
─────────────────────────────────────────────────────────────────
1 VietJet SkyBoss Upgrade HIGH 10-15% Book through app,
Promo (recurring monthly) available first week
2 Techcombank Visa Payment MEDIUM 5-8% Pay with Techcombank
Discount Visa credit card
3 VietJet "0 VND base fare" HIGH 70-90% Base fare only,
Flash Sale (quarterly) specific dates,
limited inventory,
tax/fees still apply
4 RetailMeNot: VJETFLY10 LOW $10 off Unverified, possibly
expired, US bookings
only?
5 [EXPIRED] VietJet Tet 2026 EXPIRED Was 20% Ended Feb 15, 2026
Early Bird Listed for reference
Provide a calendar of known recurring airline sales:
Vietnamese Carriers:
| Airline | Sale Type | Typical Timing | Discount |
|---|---|---|---|
| VietJet | Flash Sale "0 VND" | Monthly (varies) | 70-90% base fare |
| VietJet | Birthday Sale (Dec) | December | 15-30% |
| VN Airlines | "Bay La Yeu" | Seasonal | 10-20% |
| VN Airlines | Tet Early Bird | Oct-Nov | 15-25% for Tet travel |
| Bamboo | Route Launch | Varies | 30-50% for new routes |
International Carriers:
| Airline | Sale Type | Typical Timing | Discount |
|---|---|---|---|
| AirAsia | Big Sale | Quarterly (Mar, Jun, Sep, Nov) | 20-50% |
| Scoot | Take-Off Tuesday | Tuesdays | 10-30% |
| Korean Air | Global Sale | 2-3x per year | 15-25% |
| Singapore Airlines | Early Bird | 45-60 days ahead | 10-15% |
| Turkish Airlines | Spring/Fall Campaign | Mar-Apr, Sep-Oct | 15-25% |
If user has credit card information:
| Card Bank | Airline Partner | Benefit |
|---|---|---|
| Techcombank Visa | Vietnam Airlines | 5-8% discount, bonus miles |
| Vietcombank JCB | VietJet | Payment cashback 3-5% |
| HSBC Premier | Multiple | Airport lounge access, insurance |
| Citibank Prestige | Global | 4th night free hotel, airline credits |
For the top 3 most promising deals:
[EXPIRED] but kept for reference (pattern recognition)