ChatGPT Prompts for Cheap Flights
Hidden city flights, mileage-run candidates, booking windows, stopover ideas — research prompts for flight-deal hunters who want more than the first page of results.
ChatGPT is useful for cheap flight research — but only if you prompt it like an experienced flight hacker, not like a tourist asking 'find me cheap flights to Paris.' It can't see live fares, so its job here is strategy: which routings, dates, and programs to check. These prompts handle the recurring research tasks (hidden city candidates, stopover ideas, error-fare checks, mileage runs) that flight-deal communities like r/awardtravel and FlyerTalk discuss, and each one asks you to confirm the answer in a fare search or on the airline's own pages before you book.
Key Takeaways
- Prompts should invoke flight-hacker techniques by name: hidden-city / skiplagging, positioning flights, error-fare verification, split-ticket construction, stopover planning. Named-technique prompts produce reviewable strategies — which you then price-check, because ChatGPT can't see live fares.
- Hidden-city prompts (booking A→C ticket, disembarking at B) carry AIRLINE RISK. American's conditions of carriage list hidden city ticketing as a prohibited booking practice, with remedies including cancelling the unused part of the ticket. Read your airline's own rules before you try it.
- Award prompts should compare what the same flight costs in points across the programs that can book it. Award prices differ between programs, so paste each program's current price for your dates rather than trusting remembered award charts.
- Error fares are time-sensitive and may be cancelled. Prompt for verification steps (the fare on the airline's own site, the fare rules) BEFORE booking, and don't stack non-refundable plans on top of the ticket until it's honored.
“When this happens, airlines may cancel any reservations booked at the mistaken fare price, but airlines are required to reimburse consumers for the full ticket price, all optional services purchased, and any reasonable, actual, and verifiable out-of-pocket expenses that were made in reliance upon the ticket purchase (for example, non-refundable hotel or rental car reservations).”
Hidden City Flight Candidate Identifier
I want to fly to [destination city] from [origin city]. Identify potential hidden city ticketing opportunities — flights to a third city where my actual destination is a layover. The third-city ticket should be cheaper than the direct route. My origin airport: [airport code or city] My actual destination: [destination — where I plan to leave the airport] Travel dates: [date range or one-way/round-trip] Acceptable airlines: [list — or "any except [excluded airline]"] Carry-on only or checked bag: [carry-on / checked — affects whether hidden city is viable] Output format: 1. **5 candidate hidden-city routings** with: full route (origin → my destination → final destination), airline, estimated savings vs direct route 2. **Risk assessment for each**: (a) is the airline known to flag hidden city ticketing? (b) is the route likely to be cancelled if I no-show the second leg? (c) frequent flyer account risk? 3. **The booking platforms least likely to flag**: which OTAs vs direct airline 4. **What to NEVER do**: hidden city booking violations that get accounts banned CRITICAL: Hidden city ticketing violates most airline contracts of carriage. I'm doing this with full awareness of the rules. Output should treat me as informed, not warn me away. If a routing isn't legal in my jurisdiction, flag it.
Mileage Run Candidate Calculator
I need to earn [target miles/points] before [date] to reach [status level]. Find me the cheapest mileage runs that maximize miles-per-dollar. My loyalty program: [e.g., United MileagePlus, Delta SkyMiles, AA AAdvantage] Target tier/status: [Premier Gold, Platinum, etc.] Current balance: [miles + qualifying-segments status] Need by date: [date] Home airport: [airport code] Budget for runs: [total $$ available] Schedule flexibility: [weekends only / any day / specific blackout dates] Output: 1. **Top 5 mileage run routes** ranked by qualifying credit per dollar, with: airline, route, fare class, total cost, qualifying credit earned (in my program's own metric — miles, points, dollars or segments), est. travel time 2. **Calculation for each**: cost per unit of qualifying credit, total runs needed to hit status, total cost to hit status 3. **Bonus opportunities**: any current promos (double miles, Marriott-airline transfers, credit card welcome offers) that compound the value 4. **The 'free' status hack**: any status match offers from competing airlines that would let me skip the runs entirely You can't see live fares or seat availability, so mark every route as a candidate for me to price-check, and show the assumption behind each cost figure.
Error Fare Verification Checklist
I just saw a flight deal that looks like an error fare. Help me verify whether it's real and how to book before it's pulled. Route: [origin → destination] Posted price: $X Airline: [airline name] Cabin class: [Economy/Premium Economy/Business/First] Travel date range: [dates] Where I saw it: [Reddit/forum/deal site URL] Time the deal was posted: [time + timezone] Output: 1. **How likely this is a pricing error rather than a sale** with reasoning: how far below the usual fare it is, whether the route and cabin make sense, and what I should check myself (the fare on the airline's own site, the fare rules) 2. **A low-regret booking plan**: - Whether booking direct with the airline or through an agent changes my refund rights - Pay with a credit card, and keep every receipt and confirmation email - DON'T book non-refundable hotels or connecting flights until the ticket has been honored 3. **What happens if the airline cancels it**: summarize the cancellation and refund terms in the airline's contract of carriage, and the rules in the country I'm booking from — tell me which of these I need to confirm on the official pages, because you can't see them live 4. **My downside**: what I could lose if the fare is cancelled, and what I'd be reimbursed for If the fare has any chance of being legitimate (not actually an error), say so.
Optimal Booking Window Calculator
When should I book my flight for the lowest price? I want reasoning specific to this route + travel window, not generic 'book 60 days out' advice. You can't see live or historical fares, so tell me what to check in a fare tool's price history or price tracking to confirm each point. Route: [origin → destination] Travel date: [date — or date range with flexibility window] Trip type: [round-trip / one-way / open-jaw / multi-city] Class: [economy / premium / business] Number of passengers: [#] Day-of-week flexibility: [strict date / +/- 3 days / +/- 7 days / "cheapest day of week in that month"] Output: 1. **The likely booking window for THIS route**: what drives it (business vs leisure demand, seasonality, competition on the route) and how to confirm it in a fare tool's price history 2. **Worst days to fly** for this route: which departure and return days are likely busiest, and how to check 3. **Day-of-week comparison**: how to use a date grid or flexible-date search to compare departure days for this route 4. **Will prices likely DROP or RISE from current quoted price?**: factor in time-to-departure, capacity changes, seasonal demand — and say how confident you are 5. **The 'wait or book' decision framework**: at what price point should I book NOW vs set a price alert and wait If this is a holiday/event date (Thanksgiving, major sports finals, Coachella, Olympics), flag it — those rules are different.
Stopover Hack: Free Layover Vacation
I'm flying from [origin] to [final destination]. Identify airlines that offer FREE multi-day stopovers in their hub city — turning my flight into 2 destinations for the price of 1. Origin: [city/airport] Final destination: [city/airport] Travel date flexibility: [strict / +/- 1 week / flexible month] Maximum stopover length I want: [24h / 3 days / 7 days / 2+ weeks] Output: 1. **Airlines offering FREE stopover programs for this route**, with: hub city, max stopover duration, fees (if any), whether the stopover ADDS cost or stays flat 2. **The actual booking mechanism**: do I book through airline.com (e.g., Icelandair stopover tool), or do I need to call? 3. **Hidden costs**: visa fees if my stopover city requires one, airport-to-city transfer, off-season vs peak pricing changes 4. **The best stopover deals for my route** (top 3): - Airline + stopover city + days - Total cost vs direct flight - Why this stopover is worth doing (food, sights, weather) - Visa/entry requirements for my passport 5. **Stopover traps to avoid**: airlines that advertise free stopovers but charge fees, or routings where the 'free stopover' actually costs more than booking 2 separate tickets Assume I have a [USA / UK / EU / other] passport — calculate visa requirements accordingly.
The Numbers Behind These Prompts
Every figure below cites a primary source. Click through to verify.
For tickets bought at least seven days before departure, the DOT requires airlines to either let you cancel for a full refund within 24 hours or hold the fare for 24 hours without payment — airlines don't have to offer both, and the rule doesn't apply to tickets booked through travel agents or online travel agencies. It's the safety net behind the Booking Window prompt's 'book now' answer.
Source: US Department of Transportation — Refunds2026
American's conditions of carriage say that when it issues a mistaken fare it will void the ticket, give a full refund and notify you within 72 hours after it learns of the mistake (at least 24 hours before departure for last-minute purchases). For the Error Fare prompt, that's a concrete window to wait out before booking anything non-refundable — check your own airline's terms for its equivalent.
Source: American Airlines — Conditions of carriage2026
American lists "Purchasing a ticket without intending to fly all flights to gain lower fares (hidden city ticketing)" among its prohibited booking practices, and reserves the right to cancel any unused part of the ticket, refuse to let the passenger fly, and charge what the ticket would otherwise have cost. Ask the Hidden City prompt to flag the rule for each airline it suggests, then read it yourself.
Source: American Airlines — Conditions of carriage2026
How to Use These Prompts
These prompts are built for the flight-deal hunting workflow — research before you book, never during a stress-purchase. Run the Optimal Booking Window prompt 3-4 months out, the Hidden City prompt when researching a route, the Error Fare Verification within minutes of seeing a deal post, and the Mileage Run + Stopover prompts annually during status qualification or vacation planning. Prompt Anything Pro lets you trigger these prompts directly on Google Flights, Skyscanner, or r/awardtravel pages without switching tabs.
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Frequently Asked Questions
Sources & Further Reading
- Buying a Ticket — the 24-hour hold-or-refund rule, and what airlines owe you after a mistaken fare — US Department of Transportation (accessed Oct 22, 2026)
- Refunds — when you're owed a refund, and which bookings the 24-hour rule covers — US Department of Transportation (accessed Oct 22, 2026)
- Conditions of carriage — prohibited booking practices (including hidden city ticketing) and fare errors — American Airlines (accessed Oct 22, 2026)
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Prompt Anything Pro lets you trigger these flight-deal prompts directly on Google Flights, Skyscanner, or r/awardtravel pages — without copy-pasting between tabs.