Can I recover a fare difference after a cabin downgrade?

Ask for the applicable refund of the difference in service, with the original receipt and replacement cabin evidence. The exact remedy depends on governing law and ticket conditions.

What to check

Check whether the flights were on one ticket, what the airline offered, and whether you agreed to give up a seat or take a new flight. Small differences in those facts can change the claim path.

What to do next

Contact the operating airline while the remaining itinerary can still be changed. Keep a copy of its offer and your response.

Official sources

• European Union / Your Europe: Air passenger rights
• U.S. DOT: Refunds