Pre-integrated NDC & flight aggregator

Duffel integration on ReservationHub

Duffel is a London-based travel technology company co-founded by Steve Domin and Tom Bates. Its Flights API gives travel sellers access to more than 300 airlines (2026) through NDC, GDS and low-cost channels, with ancillaries, changes and cancellations handled through one API.

About Duffel

Duffel sells flights through a single developer-focused API. It started as a business-to-business platform for distributing flights and raised a USD 30 million Series B in 2019, led by Index Ventures. Rather than building a booking desktop, it concentrates on the API and its documentation, test environment and client libraries.

The Duffel Flights API searches content that Duffel sources from NDC, GDS and low-cost carrier channels, and returns it in one format. Sellers can add their own markup, sell extra bags and seat selection, and process changes and cancellations through the same API. Duffel also offers a managed option in which it provides IATA and ARC accreditation and ticketing, so sellers without their own accreditation can still issue tickets.

Duffel Stays adds accommodation from what Duffel describes as millions of properties worldwide. To see where Duffel sits among other aggregators, read what is an NDC aggregator; for airline-by-airline NDC status, see NDC airlines.

What you can sell

Flights from more than 300 airlines (as of 2026)
NDC offers, including fares not filed in the GDS
Low-cost carrier flights
Extra baggage and seat selection
Booking changes and cancellations
Hotel stays through Duffel Stays

How to connect Duffel

Bring your contractUse your own agreement and credentials with Duffel.
Plug in credentialsAdd them to your ReservationHub account; the adapter is already built and maintained.
Set your rulesApply markups, commissions and channel rules per supplier, channel or agent.
Go liveContent appears alongside your other suppliers in one search and one cart.

Who uses it

Travel startupsLaunch flight booking quickly using Duffel's API and managed ticketing instead of negotiating many airline connections.

Online travel agenciesAdd NDC and low-cost content with ancillaries to an existing flight search alongside GDS results.

B2B travel platformsGive sub-agents bookable NDC fares, bags and seats with their own markups applied on top.

Plan limits

Limit	Basic	Standard	Premium
NDC carriers	1	2	Unlimited
LCC carriers	2	4	Unlimited

From the SaaS plans: Basic USD 99/month, Standard USD 200/month, Premium USD 350/month. The Source Code Edition and Travel API are priced separately.

Duffel integration: FAQ

Does ReservationHub integrate with Duffel?

Yes. Duffel is one of the NDC aggregators pre-integrated in ReservationHub and listed on the partners page. Duffel fares appear in the same search as your GDS and low-cost suppliers, so agents compare and book them together.

Do I need my own Duffel account?

Yes. You sign up with Duffel under your own agreement, then plug your Duffel credentials into ReservationHub. The commercial terms, airline access and any managed ticketing are between you and Duffel; ReservationHub does not supply the Duffel contract.

What can I sell through Duffel?

Flights from more than 300 airlines that Duffel sources through NDC, GDS and low-cost channels, plus extras such as checked bags and seat selection. Duffel also supports changes and cancellations through its API, and offers hotel stays through a separate Duffel Stays product.

Can I use Duffel without IATA accreditation?

Duffel offers a managed content option in which it provides IATA and ARC accreditation and ticketing authority, so sellers without their own accreditation can issue tickets. Check the current terms, markets and airline coverage with Duffel before you go live.