1
Add the journey facts
Start with the flight number and travel date. Then add origin and final ticketed destination (airports if lookup fails), the operating airline and whether the itinerary was booked together.
A clear way to understand your options.
FlightRefundCalc makes preliminary passenger-rights information easier to assess. It does not promise payment, submit a claim, or replace legal advice.
2
Describe the disruption
Tell us whether it was a delay, cancellation or denied boarding, plus timing, rerouting and the reason the airline gave.
3
Read a preliminary estimate
We separate EU261, UK261 and U.S. DOT information, explain the facts that matter, and flag when a case needs more evidence.
4
Prepare your next step
Keep the suggested evidence and use the printable direct-claim letter toolkit if you want to contact the airline yourself.
Start with the airline and your evidence.
The operating airline is usually the right first contact. Keep your booking confirmation, boarding pass or check-in proof, disruption notice, scheduled and actual arrival timing, rerouting offer, and reasonable-expense receipts before you contact it.
Use the direct-letter tool to prepare a factual request, then submit it through the airline’s current official channel. FlightRefundCalc does not receive your documents or take over the case.
Why an estimate can change.
Eligibility can depend on the operating carrier, route, final-arrival delay, notice, rerouting, cause, evidence, time limit and local law. An airline can record facts differently or rely on an extraordinary-circumstances position. Check its written response and official information before relying on any result.
Educational estimate. Not a law firm. Not a guarantee of payment.
What the calculator does—and does not do
Explains a preliminary eligibility path.
Lists practical evidence to retain.
Separates EU/UK rules from U.S. DOT information.
Flags facts that may need review.
Practical explainer
How to use a preliminary result responsibly
Flight disruption rules are fact-specific. Start with the operating flight, the complete ticketed journey, scheduled and actual timing, the airline’s notice and any alternate itinerary. Keep compensation, care, refund and rerouting questions separate. FlightRefundCalc helps organise those facts, but it does not decide a claim, receive evidence or provide legal representation.
Worked example
For example, an LHR to JFK passenger may see a UK261 framework prompt after entering the route, the operating carrier and final-arrival delay. That is a structured next step, not a payment decision: notice, rerouting, the airline’s written reason and evidence can change the analysis.
Sources and related guides
Reviewed 26 August 2026. Check the authority’s current guidance and the airline’s current official channel before submitting personal information.
UK Civil Aviation Authority: flight delays and cancellations