Glossary
Codeshare
Definition: A codeshare is a commercial arrangement where two or more airlines sell seats on the same flight under different flight numbers, allowing each airline to market the flight as its own.
Last updated
Term at a glance
Codeshare — quick reference
| Term | Codeshare |
|---|---|
| One-liner | A codeshare is a commercial arrangement where two or more airlines sell seats on the same flight under different flight numbers, allowing each airline to market the flight as its… |
| Where it matters | Premium-cabin booking decisions, fare-rules interpretation, airline-product comparison. |
| Related concepts | Interline · Oneworld Alliance · Star Alliance · SkyTeam · Marketing Carrier |
| Last verified | 2026-05-07 |
Background
Codesharing is one of the most common airline partnerships. When you book a flight that shows as, say, AA 5678, you may actually be flying on a British Airways aircraft operating as BA 123. Both airlines sell tickets on the same physical aircraft, but under their own flight numbers.
How it works in modern business class
Codeshares benefit passengers by offering more flight options and allowing connections on partner airlines with a single booking. They also enable airlines to sell tickets to destinations they don’t physically fly to, expanding their apparent network.
Why it matters when you book
However, codeshares can cause confusion about which airline’s product you’ll actually experience. The operating carrier determines the aircraft, seat, and onboard service. When booking business class, it’s essential to check the operating carrier to ensure you’ll receive the expected premium product. BookMyBusinessClass agents always confirm the operating carrier and seat type before booking.
In booking practice
How Codeshare comes up when you book
Where this term appears in the booking flow
- In fare quotes and itineraries. When a consolidator agent quotes a premium-cabin fare on codeshare-relevant routes or aircraft, this term may appear in the carrier's rules text, fare-class designator, or aircraft / cabin description. Knowing what it means helps you compare quotes apples-to-apples.
- In airline-product reviews and seat maps. Premium-cabin reviews (Skytrax, AirlineRatings.com, individual long-form reviews) reference codeshare when relevant. Seat-map sites (SeatGuru, AeroLOPA) use the term when classifying hardware or service tiers.
- In loyalty-program redemption rules. Frequent-flyer programs use this and related terms in their award-chart rules, partner-redemption tables, and elite-tier benefits documentation. Misreading the term can mean booking the wrong fare class or missing a sweet-spot redemption.
- In carrier alliance and codeshare documentation. Star Alliance, oneworld, and SkyTeam each reference this concept where it affects partner-flight booking, lounge access policies, or status-recognition rules across alliance members.
At a Glance
Related concepts
| Term | Quick definition | Reference |
|---|---|---|
| Club Suite (British Airways) | British Airways' refreshed business class product, replacing the previous Club World cabin. Features 1-2-1… | Read |
| Companion Ticket | A companion ticket (or companion certificate) is a benefit that allows an elite frequent flyer or credit card… | Read |
| Circadian Rhythm | Circadian rhythm is the body’s natural 24-hour internal clock that regulates sleep-wake cycles, hormone… | Read |
| Complimentary Upgrade | A complimentary upgrade is a free cabin class upgrade offered by an airline to eligible passengers, typically… | Read |
| Chauffeur Drive | Chauffeur drive is a complimentary ground transfer service offered by select airlines to first and business… | Read |
| Connecting Flight | A connecting flight is a multi-segment journey where passengers change aircraft at an intermediate airport,… | Read |
Related Terms
You might also want to know
- Club Suite (British Airways)
British Airways' refreshed business class product, replacing the previous Club World cabin. Features 1-2-1 reverse herringbone configuration with full sliding doors, direct aisle access from every seat, and a 23-inch IFE screen.
- Companion Ticket
A companion ticket (or companion certificate) is a benefit that allows an elite frequent flyer or credit card holder to book a second ticket for free or at a deep discount when purchasing a full-fare ticket.
- Circadian Rhythm
Circadian rhythm is the body’s natural 24-hour internal clock that regulates sleep-wake cycles, hormone release, and other physiological processes. Long-haul air travel disrupts this rhythm, causing jet lag.
- Complimentary Upgrade
A complimentary upgrade is a free cabin class upgrade offered by an airline to eligible passengers, typically elite frequent flyers, moving them from economy to business class or business to first class at no additional cost.
- Chauffeur Drive
Chauffeur drive is a complimentary ground transfer service offered by select airlines to first and business class passengers, providing a luxury car and driver to take you to or from the airport.
- Connecting Flight
A connecting flight is a multi-segment journey where passengers change aircraft at an intermediate airport, continuing to their final destination on a different flight number.
Drill deeper
Continue researching this topic
FAQ
Frequently asked questions
How do I know if my flight is a codeshare?
Your booking confirmation will show "operated by" followed by the actual airline operating the flight if it’s a codeshare. Always check this, as the operating carrier determines the actual aircraft, seat, and service you’ll receive.
Do I earn miles on codeshare flights?
Yes, but the earning rate may differ. You can typically credit miles to either the marketing airline’s programme or the operating airline’s programme. Check both programmes’ rules for the best earning rate on your specific fare class.
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