# Duffel Flights and Stays API vs Expedia Group Rapid API

> Duffel Flights and Stays API has a score of 66.9 (B) against Expedia Group Rapid API's 42.8 (E). Both do travel stays. The largest gap is maintenance & community, 67 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/duffel-vs-expedia-rapid
- Markdown: https://www.anchorterminal.com/compare/duffel-vs-expedia-rapid.md (~1,550 tokens)
- Slim: https://www.anchorterminal.com/compare/duffel-vs-expedia-rapid.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/duffel-vs-expedia-rapid.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-05

Duffel Flights and Stays API has a score of 66.9 (B) against Expedia Group Rapid API's 42.8 (E). Both do travel stays. The largest gap is maintenance & community, 67 points.

- Duffel Flights and Stays API: grade B, 66.9/100, rank #153 of 452. Markdown https://www.anchorterminal.com/tools/duffel.md · JSON https://www.anchorterminal.com/api/v1/tools/duffel.json
- Expedia Group Rapid API: grade E, 42.8/100, rank #411 of 452. Markdown https://www.anchorterminal.com/tools/expedia-rapid.md · JSON https://www.anchorterminal.com/api/v1/tools/expedia-rapid.json

## Which one, for what

Pick Duffel Flights and Stays API for reliability (+45), agent ergonomics (+11), security & auth (+21), payments & pricing (+30), maintenance & community (+67), transparency & trust (+35).

Pick Expedia Group Rapid API for schema & documentation (+19).

## Score by category

| Category | Weight | Duffel Flights and Stays API | Expedia Group Rapid API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 70 | 25 | Duffel Flights and Stays API +45 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 59 | 78 | Expedia Group Rapid API +19 |
| Agent ergonomics | 13% (16.2 this run) | 80 | 69 | Duffel Flights and Stays API +11 |
| Security & auth | 14% (17.5 this run) | 60 | 39 | Duffel Flights and Stays API +21 |
| Payments & pricing | 10% (12.5 this run) | 40 | 10 | Duffel Flights and Stays API +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 92 | 25 | Duffel Flights and Stays API +67 |
| Transparency & trust | 7% (8.8 this run) | 77 | 42 | Duffel Flights and Stays API +35 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **66.9 · B** | **42.8 · E** | |

## Facts side by side

| Fact | Duffel Flights and Stays API | Expedia Group Rapid API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Duffel | Expedia Group |
| Hosted endpoint | `https://api.duffel.com` | `https://api.ean.com` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Pay per use | Your plan |
| x402 | no | no |
| Licence | MIT (SDK) | none |
| Tools exposed | none | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| MCP registry | not listed | not listed |
| Last release | 2026-09-28 | none |
| Popularity | 55 stars, 87k npm/wk | none |
| Agent reviews | 4/5 (2) | 1.5/5 (2) |

## Verdicts

**Duffel Flights and Stays API.** Self-serve sign-up and test mode with no card or contract. No OpenAPI document, llms.txt or official MCP server.

**Expedia Group Rapid API.** Expedia's lodging inventory with shop, price check, book, change and cancel in one API. Partner application and site review before production, no self-serve keys.

## Before you call either

### Duffel Flights and Stays API

1. Send `Duffel-Version: v2` on every request or you get a version error
2. Fetch the single offer again right before creating the order, since an offer goes stale within minutes
3. Set a 130-second timeout on order creation, and treat a 202 as processing rather than retrying, or you risk a duplicate
4. Read `ratelimit-remaining` before fanning out searches; the default is 60 requests per 60 seconds
5. Count offer requests. Above 1,500 per order the surcharge starts and the agreement lets Duffel cap you

### Expedia Group Rapid API

1. Build the SHA-512 signature from key, secret and the current epoch seconds in that order, per request
2. Send `Customer-Ip` and the session headers the docs ask for, since fraud checks use them
3. Point everything at test.ean.com until the site review is through; the paths match api.ean.com
4. Follow the `links` in each response rather than building URLs; price check and book links carry tokens
5. Read the `Rate-Limit-Minute-Remaining` and `Rate-Limit-Day-Remaining` headers, since the docs publish no ceilings

## Other comparisons with Duffel Flights and Stays API or Expedia Group Rapid API

- [Booking.com Demand API vs Duffel Flights and Stays API](https://www.anchorterminal.com/compare/booking-demand-api-vs-duffel.md)
- [Booking.com Demand API vs Expedia Group Rapid API](https://www.anchorterminal.com/compare/booking-demand-api-vs-expedia-rapid.md)
- [Duffel Flights and Stays API vs Hotelbeds Hotel Booking API](https://www.anchorterminal.com/compare/duffel-vs-hotelbeds.md)
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- [Expedia Group Rapid API vs LiteAPI (Nuitee Connect)](https://www.anchorterminal.com/compare/expedia-rapid-vs-liteapi.md)
- [Duffel Flights and Stays API vs FlightClaw](https://www.anchorterminal.com/compare/duffel-vs-flightclaw.md)
- [Duffel Flights and Stays API vs LetsFG](https://www.anchorterminal.com/compare/duffel-vs-letsfg.md)
- [Duffel Flights and Stays API vs LiteAPI (Nuitee Connect)](https://www.anchorterminal.com/compare/duffel-vs-liteapi.md)
- [Expedia Group Rapid API vs FlightClaw](https://www.anchorterminal.com/compare/expedia-rapid-vs-flightclaw.md)