DOT 2024 rules require automatic cash refunds for controllable cancellations and significant changes. At 3+ hours delay you get meals; overnight requires hotel + transport. Identifies entitlements by airline.
Detailed instructions, formula notes, and US-context guidance shown in the calculator above.
Disclaimer: Estimate only. Consult a qualified professional for decisions with major financial, legal, or health consequences.
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Calculator information
📋 How to use this calculator
- Select flight status — delayed or cancelled.
- Enter delay duration in hours.
- Select cause: controllable (airline-side) or uncontrollable (weather/ATC).
- Indicate whether the delay requires an overnight stay.
- Select flight type (domestic / international) and fare paid.
- Review cash refund eligibility and entitlement list per DOT 2024 rules.
🧮 DOT 2024 Automatic Refund Rules (Effective 2024)
Cash_refund_eligible = (Cancelled) OR (Significant_change ≥ 3hr domestic / 6hr international)
- Significant change: domestic 3+hr delay OR international 6+hr OR adds connection OR changes airport
- Cash refund: must be original form of payment (not voucher) within 7 days (credit) / 20 days (cash)
- Controllable delays (crew, mechanical, IT): airline obligated to provide rebooking + amenities
- Uncontrollable (weather, ATC, security): rebooking only, no meal/hotel obligation under DOT rules
- Bag refund: 12+hr delay domestic / 15-30hr international = automatic carrier-paid bag fee refund
DOT rules effective 2024 are mandatory for ALL US carriers (Delta, United, American, Southwest, JetBlue, Alaska, Hawaiian, Frontier, Spirit, Allegiant). Each airline ALSO publishes a Customer Service Plan with additional commitments — some go beyond DOT minimums. EU EC261 rules NOT applicable to US-flagged carriers (only on flights departing EU).
💡 Worked example: 4-hour delay, controllable mechanical, overnight, $420 domestic fare
Given:- Status: Delayed
- Delay: 4 hours
- Cause: Mechanical (controllable)
- Overnight required: Yes
- Flight type: Domestic
- Fare paid: $420
Steps:- 4 hr domestic delay ≥ 3 hr threshold → cash refund eligible: $420
- Controllable + 3+ hr → meal voucher required
- Controllable + overnight → hotel + transport required
- Free rebooking on same airline at no charge
- Entitlements: refund OR rebooking + amenities (passenger choice)
Result: $420 cash refund eligible. Choose: take cash and book yourself, OR take free rebook + meal + hotel + transport. Most travelers prefer rebook for time, refund for inconvenience.
❓ Frequently asked questions
What counts as 'controllable' vs 'uncontrollable'?
Controllable (airline must provide amenities): crew shortages, mechanical issues (excluding safety-mandated unscheduled maintenance), IT outages, fueling delays, baggage loading, scheduled maintenance during operating hours. Uncontrollable (only obligated to rebook): weather (storms, fog, snow), Air Traffic Control delays/ground stops, security events (TSA delays, FAA ground holds), war/civil unrest, third-party airport issues (gate availability, lavatory cart breakdown — debated). Airline categorization sometimes disputed — file DOT complaint if denied amenities.
Can I demand a refund instead of voucher?
YES — under DOT 2024 rules, for any qualifying disruption (cancellation, significant change), the refund must be issued AUTOMATICALLY to original form of payment. Airlines cannot default to voucher offers. If they refuse: (1) Reject the voucher offer in writing; (2) Demand cash refund citing 14 CFR 259; (3) File DOT complaint at airconsumer.dot.gov; (4) Credit card chargeback if charged for service not delivered. Verbal refusals don't count — get it in writing.
What about my non-refundable hotel/car rental booked through Expedia?
DOT rules cover the AIRLINE's product (flight). For downstream costs (hotel, car, cruise, tour booked separately), you must claim under: (1) Trip insurance (cancel-for-any-reason policies); (2) Credit card travel protection (most premium cards reimburse $500-$1,500 for delays 6+hr); (3) Direct goodwill request to hotel/rental (sometimes works for major chains). Always book non-refundable foreign hotels with a credit card that offers travel delay coverage.
Bumped from a flight — what compensation am I entitled to?
Involuntary bump (denied boarding due to oversold): DOT 14 CFR 250 mandates 200% of one-way fare (max $1,075) for 1-2hr delay arrival; 400% (max $2,150) for 2+hr delay. CASH, not voucher. Voluntary bump (you volunteered): receive whatever airline offers (often $400-$2,000+ in vouchers + meals + hotel). Voluntary always preferred at full price-elasticity — major US carriers offer $1,500-$5,000 voucher bidding during oversold flights.
Does EU EC261 apply to my US flight?
Only if flight DEPARTS from an EU/UK airport (regardless of carrier). US flights between two US points: EC261 does NOT apply. EU departure on US carrier: YES (e.g., American Airlines LHR → JFK qualifies). Compensation €250-600 cash per passenger for delays 3+hr or cancellations within 14 days, regardless of fare paid — often EXCEEDS US DOT rules. Claim via airline customer service or third-party services (AirHelp, ClaimCompass, Compensair) — they take 25-35% commission.
📚 Sources & references
Last updated: May 23, 2026