Journey 1
Great-circle distance
450 km
Planning tool / 2026 factors
Estimate your flight emissions
Create an indicative planning estimate using published average emissions factors. This is not a verified footprint, regulatory calculation or evidence that sustainable aviation fuel was used on a particular flight.
Journey details
Search by IATA code, city, country or airport name; distance is calculated automatically.
A sensitivity only. It is not used to calculate environmental-benefit units.
CSV format: origin,destination,travellers,journeys,trip_type,cabin. Use IATA codes, “oneway” or “return”, and economy, premium, business or first.
Live lookup loaded with 40 active IATA-coded airports from the OurAirports open dataset.
Read before using the result
Assumptions and boundaries
Results are estimates based on user inputs and average factors. FEG does not warrant their accuracy or suitability for statutory, financial or sustainability reporting. Use primary airline data and obtain appropriate professional review where required.
- A1
Uses 2026 UK Government international-flight factors for journeys between non-UK countries as a transparent global proxy; it is not route-, aircraft- or airline-specific.
- A2
Adds 8% to the entered airport-to-airport distance for indirect routing, delays and circling. Do not add that uplift to your input.
- A3
Direct emissions include operational CO₂, CH₄ and N₂O and reflect average aircraft mix, occupancy, freight allocation and cabin allocation. Upstream fuel production is excluded.
- A4
The optional non-CO₂ result approximates wider aviation climate effects using 1.7 × direct GHG. The official method applies the multiplier to CO₂ alone, so this simplified sensitivity is intentionally labelled approximate.
- A5
Airport access, hotels, freight, infrastructure and other trip activity are excluded. Airline primary data or ICAO route-level estimates may differ materially.
- A6
A purchase or retirement does not erase flight emissions and does not prove physical SAF use. Use the final certificate, methodology and retirement evidence for any external claim.