diff --git a/main.go b/main.go
index d972f1dc5b03..1f8e26d18938 100644
--- a/main.go
+++ b/main.go
@@ -553,6 +553,7 @@ func run(state overseer.State, logSync func() error) {
 	feature.OctopusDeployDetectorEnabled.Store(true)
 	feature.OpenRouterDetectorEnabled.Store(true)
 	feature.NewRelicInsightsInsertKeyDetectorEnabled.Store(true)
+	feature.DuffelTokenDetectorEnabled.Store(true)
 
 	conf := &config.Config{}
 	if *configFilename != "" {
diff --git a/pkg/detectors/duffeltoken/duffeltoken.go b/pkg/detectors/duffeltoken/duffeltoken.go
new file mode 100644
index 000000000000..aafca76dcc37
--- /dev/null
+++ b/pkg/detectors/duffeltoken/duffeltoken.go
@@ -0,0 +1,144 @@
+package duffeltoken
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+
+	regexp "github.com/wasilibs/go-re2"
+
+	"github.com/trufflesecurity/trufflehog/v3/pkg/common"
+	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors"
+	"github.com/trufflesecurity/trufflehog/v3/pkg/pb/detector_typepb"
+)
+
+type Scanner struct {
+	client *http.Client
+}
+
+// Compile-time interface check
+var _ detectors.Detector = (*Scanner)(nil)
+
+var (
+	defaultClient = detectors.NewClientWithDedup(common.SaneHttpClient())
+
+	// Duffel test token pattern
+	// Format: (duffel_test_ or duffel_live_)  + 43 alphanumeric / dash / underscore characters
+	duffelTestTokenPat = regexp.MustCompile(
+		`\b(duffel_(test|live)_[A-Za-z0-9_-]{43})(?:$|[^A-Za-z0-9_-])`,
+	)
+)
+
+// Keywords used for fast pre-filtering
+func (s Scanner) Keywords() []string {
+	return []string{"duffel_test_", "duffel_live_"}
+}
+
+func (s Scanner) getClient() *http.Client {
+	if s.client != nil {
+		return s.client
+	}
+	return defaultClient
+}
+
+// FromData scans for Duffel test tokens and optionally verifies them
+func (s Scanner) FromData(
+	ctx context.Context,
+	verify bool,
+	data []byte,
+) (results []detectors.Result, err error) {
+
+	dataStr := string(data)
+
+	uniqueTokens := make(map[string]struct{})
+	for _, match := range duffelTestTokenPat.FindAllStringSubmatch(dataStr, -1) {
+		uniqueTokens[match[1]] = struct{}{}
+	}
+
+	for token := range uniqueTokens {
+		result := detectors.Result{
+			DetectorType: detector_typepb.DetectorType_DuffelToken,
+			Raw:          []byte(token),
+			Redacted:     token[:15] + "...",
+			SecretParts: map[string]string{
+				"token": token,
+			},
+		}
+
+		if verify {
+			verified, verificationErr := verifyDuffelToken(
+				ctx,
+				s.getClient(),
+				token,
+			)
+
+			result.SetVerificationError(verificationErr, token)
+			result.Verified = verified
+		}
+
+		results = append(results, result)
+	}
+
+	return
+}
+
+func verifyDuffelToken(
+	ctx context.Context,
+	client *http.Client,
+	token string,
+) (bool, error) {
+
+	req, err := http.NewRequestWithContext(
+		ctx,
+		http.MethodGet,
+		"https://api.duffel.com/identity/customer/users?limit=1",
+		http.NoBody,
+	)
+	if err != nil {
+		return false, err
+	}
+
+	req.Header.Set("Authorization", "Bearer "+token)
+	req.Header.Set("Duffel-Version", "v2")
+	req.Header.Set("Accept", "application/json")
+
+	res, err := detectors.DoWithDedup(client, detector_typepb.DetectorType_DuffelToken, token, req)
+
+	if err != nil {
+		return false, err
+	}
+
+	defer func() {
+		_, _ = io.Copy(io.Discard, res.Body)
+		_ = res.Body.Close()
+	}()
+
+	switch res.StatusCode {
+
+	case http.StatusOK:
+		return true, nil
+
+	case http.StatusUnauthorized:
+		// Token invalid or revoked
+		return false, nil
+
+	case http.StatusForbidden:
+		// Token valid but insufficient permissions - treat as verified since the token is active
+		return true, nil
+
+	default:
+		return false, fmt.Errorf(
+			"unexpected HTTP response status %d",
+			res.StatusCode,
+		)
+	}
+}
+
+func (s Scanner) Type() detector_typepb.DetectorType {
+	return detector_typepb.DetectorType_DuffelToken
+}
+
+func (s Scanner) Description() string {
+	return "Duffel is a flight search and booking API service. Duffel API tokens can be used to access and interact with flight search and booking APIs in test environments."
+}
diff --git a/pkg/detectors/duffeltoken/duffeltoken_integration_test.go b/pkg/detectors/duffeltoken/duffeltoken_integration_test.go
new file mode 100644
index 000000000000..fc7c411dfe1a
--- /dev/null
+++ b/pkg/detectors/duffeltoken/duffeltoken_integration_test.go
@@ -0,0 +1,180 @@
+//go:build detectors
+// +build detectors
+
+package duffeltoken
+
+import (
+	"context"
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
+
+	"github.com/trufflesecurity/trufflehog/v3/pkg/common"
+	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors"
+	"github.com/trufflesecurity/trufflehog/v3/pkg/pb/detector_typepb"
+)
+
+func TestDuffelTestToken_FromData(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
+	defer cancel()
+
+	testSecrets, err := common.GetSecret(ctx, "trufflehog-testing", "detectors6")
+	if err != nil {
+		t.Fatalf("could not get test secrets from GCP: %s", err)
+	}
+
+	activeToken := testSecrets.MustGetField("DUFFEL_TEST_TOKEN")
+
+	inactiveToken := "duffel_test_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+
+	type args struct {
+		ctx    context.Context
+		data   []byte
+		verify bool
+	}
+
+	tests := []struct {
+		name                string
+		s                   Scanner
+		args                args
+		want                []detectors.Result
+		wantErr             bool
+		wantVerificationErr bool
+	}{
+		{
+			name: "found, verified",
+			s:    Scanner{},
+			args: args{
+				ctx:    context.Background(),
+				data:   fmt.Appendf([]byte{}, "Using Duffel token %s for API", activeToken),
+				verify: true,
+			},
+			want: []detectors.Result{
+				{
+					DetectorType: detector_typepb.DetectorType_DuffelToken,
+					Verified:     true,
+					Raw:          []byte(activeToken),
+				},
+			},
+		},
+		{
+			name: "found, real token, verification error due to timeout",
+			s:    Scanner{client: common.SaneHttpClientTimeOut(1 * time.Microsecond)},
+			args: args{
+				ctx:    context.Background(),
+				data:   fmt.Appendf([]byte{}, "Using Duffel token %s for API", activeToken),
+				verify: true,
+			},
+			want: []detectors.Result{
+				{
+					DetectorType: detector_typepb.DetectorType_DuffelToken,
+					Verified:     false,
+					Raw:          []byte(activeToken),
+				},
+			},
+			wantVerificationErr: true,
+		},
+		{
+			name: "found, real token, verification error due to unexpected api surface",
+			s:    Scanner{client: common.ConstantResponseHttpClient(500, "{}")},
+			args: args{
+				ctx:    context.Background(),
+				data:   fmt.Appendf([]byte{}, "Using Duffel token %s for API", activeToken),
+				verify: true,
+			},
+			want: []detectors.Result{
+				{
+					DetectorType: detector_typepb.DetectorType_DuffelToken,
+					Verified:     false,
+					Raw:          []byte(activeToken),
+				},
+			},
+			wantVerificationErr: true,
+		},
+		{
+			name: "found, unverified (inactive token)",
+			s:    Scanner{},
+			args: args{
+				ctx:    context.Background(),
+				data:   fmt.Appendf([]byte{}, "Using Duffel token %s for API", inactiveToken),
+				verify: true,
+			},
+			want: []detectors.Result{
+				{
+					DetectorType: detector_typepb.DetectorType_DuffelToken,
+					Verified:     false,
+					Raw:          []byte(inactiveToken),
+				},
+			},
+		},
+		{
+			name: "not found",
+			s:    Scanner{},
+			args: args{
+				ctx:    context.Background(),
+				data:   []byte("no secrets here"),
+				verify: true,
+			},
+			want: nil,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := tt.s.FromData(tt.args.ctx, tt.args.verify, tt.args.data)
+			if (err != nil) != tt.wantErr {
+				t.Fatalf("DuffelTestToken.FromData() error = %v, wantErr %v", err, tt.wantErr)
+			}
+
+			for i := range got {
+				if len(got[i].Raw) == 0 {
+					t.Fatal("no raw secret present")
+				}
+
+				if (got[i].VerificationError() != nil) != tt.wantVerificationErr {
+					t.Fatalf(
+						"wantVerificationError = %v, verification error = %v",
+						tt.wantVerificationErr,
+						got[i].VerificationError(),
+					)
+				}
+			}
+
+			ignoreOpts := cmpopts.IgnoreFields(
+				detectors.Result{},
+				"ExtraData",
+				"verificationError",
+				"primarySecret",
+				"Redacted",
+				"SecretParts",
+				"chunkOffset",
+				"chunkOffsetSet",
+			)
+
+			if diff := cmp.Diff(got, tt.want, ignoreOpts); diff != "" {
+				t.Errorf("DuffelTestToken.FromData() %s diff: (-got +want)\n%s", tt.name, diff)
+			}
+		})
+	}
+}
+
+func BenchmarkDuffelTestToken_FromData(b *testing.B) {
+	ctx := context.Background()
+	s := Scanner{}
+
+	for name, data := range detectors.MustGetBenchmarkData() {
+		b.Run(name, func(b *testing.B) {
+			b.ResetTimer()
+
+			for n := 0; n < b.N; n++ {
+				_, err := s.FromData(ctx, false, data)
+				if err != nil {
+					b.Fatal(err)
+				}
+			}
+		})
+	}
+}
diff --git a/pkg/detectors/duffeltoken/duffeltoken_test.go b/pkg/detectors/duffeltoken/duffeltoken_test.go
new file mode 100644
index 000000000000..4f2c37ac7627
--- /dev/null
+++ b/pkg/detectors/duffeltoken/duffeltoken_test.go
@@ -0,0 +1,150 @@
+package duffeltoken
+
+import (
+	"context"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/stretchr/testify/require"
+
+	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors"
+	"github.com/trufflesecurity/trufflehog/v3/pkg/engine/ahocorasick"
+)
+
+func TestDuffelTestToken_Pattern(t *testing.T) {
+	d := Scanner{}
+	ahoCorasickCore := ahocorasick.NewAhoCorasickCore([]detectors.Detector{d})
+
+	tests := []struct {
+		name  string
+		input string
+		want  []string
+	}{
+		{
+			name: "valid pattern",
+			input: `
+				func setupDuffelClient() (*http.Client, error) {
+					url := "https://api.duffel.com/identity/customer/users?limit=1"
+
+					// Create a new request with the secret as a header
+					req, err := http.NewRequest("GET", url, http.NoBody)
+					if err != nil {
+						fmt.Println("Error creating request:", err)
+						return nil, err
+					}
+
+					duffelToken := "duffel_test_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+					req.Header.Set("Authorization", "Bearer "+duffelToken)
+					req.Header.Set("Duffel-Version", "v2")
+
+					// Perform the request
+					client := &http.Client{}
+					resp, _ := client.Do(req)
+					defer func() { _ = resp.Body.Close() }()
+
+					return client, nil
+				}
+				`,
+			want: []string{
+				"duffel_test_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
+			},
+		},
+		{
+			name: "valid pattern - env file",
+			input: `
+				# .env.production
+				APP_NAME=flight-booker
+				APP_ENV=production
+				DUFFEL_API_TOKEN=duffel_test_bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
+				LOG_LEVEL=info
+				`,
+			want: []string{
+				"duffel_test_bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
+			},
+		},
+		{
+			name: "valid pattern - multiple tokens",
+			input: `
+				func loadDuffelTokens() map[string]string {
+					// Tokens for each deployment environment
+					return map[string]string{
+						"staging":    "duffel_test_ccccccccccccccccccccccccccccccccccccccccccc",
+						"production": "duffel_live_ddddddddddddddddddddddddddddddddddddddddddd",
+					}
+				}
+				`,
+			want: []string{
+				"duffel_test_ccccccccccccccccccccccccccccccccccccccccccc",
+				"duffel_live_ddddddddddddddddddddddddddddddddddddddddddd",
+			},
+		},
+		{
+			name: "invalid pattern - too short",
+			input: `
+				func setupDuffelClient() {
+					// Truncated token accidentally committed
+					token := "duffel_test_abc123"
+					client.SetAuthToken(token)
+				}
+				`,
+			want: nil,
+		},
+		{
+			name: "invalid pattern - invalid characters",
+			input: `
+				func setupDuffelClient() {
+					// Token contains an invalid special character
+					token := "duffel_test_aaaaaaaaaaaaaaaaaaaaaaa!aaaaaaaaaaaaaaaaaaa"
+					client.SetAuthToken(token)
+				}
+				`,
+			want: nil,
+		},
+		{
+			name: "invalid pattern - keyword only",
+			input: `
+				// TODO: replace hardcoded duffel_test_ prefix check with proper validation
+				func isDuffelTestToken(s string) bool {
+					return strings.HasPrefix(s, "duffel_test_")
+				}
+				`,
+			want: nil,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			matchedDetectors := ahoCorasickCore.FindDetectorMatches([]byte(test.input))
+			if len(matchedDetectors) == 0 {
+				t.Errorf("test %q failed: expected keywords %v to be found in the input", test.name, d.Keywords())
+				return
+			}
+
+			results, err := d.FromData(context.Background(), false, []byte(test.input))
+			require.NoError(t, err)
+
+			if len(results) != len(test.want) {
+				t.Errorf("mismatch in result count: expected %d, got %d", len(test.want), len(results))
+				return
+			}
+
+			actual := make(map[string]struct{}, len(results))
+			for _, r := range results {
+				if len(r.RawV2) > 0 {
+					actual[string(r.RawV2)] = struct{}{}
+				} else {
+					actual[string(r.Raw)] = struct{}{}
+				}
+			}
+
+			expected := make(map[string]struct{}, len(test.want))
+			for _, v := range test.want {
+				expected[v] = struct{}{}
+			}
+
+			if diff := cmp.Diff(expected, actual); diff != "" {
+				t.Errorf("%s diff: (-want +got)\n%s", test.name, diff)
+			}
+		})
+	}
+}
diff --git a/pkg/engine/defaults/defaults.go b/pkg/engine/defaults/defaults.go
index b5006ba13d75..dd0e55ccdc33 100644
--- a/pkg/engine/defaults/defaults.go
+++ b/pkg/engine/defaults/defaults.go
@@ -253,6 +253,7 @@ import (
 	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors/dronahq"
 	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors/droneci"
 	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors/dropbox"
+	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors/duffeltoken"
 	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors/duply"
 	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors/dwolla"
 	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors/dynalist"
@@ -1144,6 +1145,7 @@ func buildDetectorList() []detectors.Detector {
 		&dronahq.Scanner{},
 		&droneci.Scanner{},
 		&dropbox.Scanner{},
+		&duffeltoken.Scanner{},
 		&duply.Scanner{},
 		&dwolla.Scanner{},
 		&dynalist.Scanner{},
@@ -1824,6 +1826,8 @@ func buildDetectorList() []detectors.Detector {
 			return !feature.OpenRouterDetectorEnabled.Load()
 		case *newrelicinsightsinsertkey.Scanner:
 			return !feature.NewRelicInsightsInsertKeyDetectorEnabled.Load()
+		case *duffeltoken.Scanner:
+			return !feature.DuffelTokenDetectorEnabled.Load()
 		default:
 			return false
 		}
diff --git a/pkg/engine/defaults/defaults_test.go b/pkg/engine/defaults/defaults_test.go
index 3b7762b66619..c09a04976ab8 100644
--- a/pkg/engine/defaults/defaults_test.go
+++ b/pkg/engine/defaults/defaults_test.go
@@ -140,6 +140,7 @@ var excludedFromDefaultList = map[detector_typepb.DetectorType]struct{}{
 	detector_typepb.DetectorType_OctopusDeploy:             {},
 	detector_typepb.DetectorType_OpenRouter:                {},
 	detector_typepb.DetectorType_NewRelicInsightsInsertKey: {},
+	detector_typepb.DetectorType_DuffelToken:               {},
 
 	// Reserved / special types.
 	detector_typepb.DetectorType_CustomRegex: {}, // added dynamically via engine config, not via buildDetectorList()
diff --git a/pkg/feature/feature.go b/pkg/feature/feature.go
index 68be675a7e9f..47689bd4265b 100644
--- a/pkg/feature/feature.go
+++ b/pkg/feature/feature.go
@@ -32,6 +32,7 @@ var (
 	DropUnverifiedJWTResults                 atomic.Bool
 	OpenRouterDetectorEnabled                atomic.Bool
 	NewRelicInsightsInsertKeyDetectorEnabled atomic.Bool
+	DuffelTokenDetectorEnabled               atomic.Bool
 )
 
 type AtomicString struct {
diff --git a/pkg/pb/detector_typepb/detector_type.pb.go b/pkg/pb/detector_typepb/detector_type.pb.go
index 682ac20a7e2b..15d8e831e92c 100644
--- a/pkg/pb/detector_typepb/detector_type.pb.go
+++ b/pkg/pb/detector_typepb/detector_type.pb.go
@@ -1112,6 +1112,7 @@ const (
 	DetectorType_OctopusDeploy                           DetectorType = 1056
 	DetectorType_OpenRouter                              DetectorType = 1057
 	DetectorType_NewRelicInsightsInsertKey               DetectorType = 1058
+	DetectorType_DuffelToken                             DetectorType = 1059
 )
 
 // Enum value maps for DetectorType.
@@ -2172,6 +2173,7 @@ var (
 		1056: "OctopusDeploy",
 		1057: "OpenRouter",
 		1058: "NewRelicInsightsInsertKey",
+		1059: "DuffelToken",
 	}
 	DetectorType_value = map[string]int32{
 		"Alibaba":                               0,
@@ -3229,6 +3231,7 @@ var (
 		"OctopusDeploy":                     1056,
 		"OpenRouter":                        1057,
 		"NewRelicInsightsInsertKey":         1058,
+		"DuffelToken":                       1059,
 	}
 )
 
@@ -3264,7 +3267,7 @@ var File_detector_type_proto protoreflect.FileDescriptor
 var file_detector_type_proto_rawDesc = []byte{
 	0x0a, 0x13, 0x64, 0x65, 0x74, 0x65, 0x63, 0x74, 0x6f, 0x72, 0x5f, 0x74, 0x79, 0x70, 0x65, 0x2e,
 	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0d, 0x64, 0x65, 0x74, 0x65, 0x63, 0x74, 0x6f, 0x72, 0x5f,
-	0x74, 0x79, 0x70, 0x65, 0x2a, 0xe7, 0x89, 0x01, 0x0a, 0x0c, 0x44, 0x65, 0x74, 0x65, 0x63, 0x74,
+	0x74, 0x79, 0x70, 0x65, 0x2a, 0xf9, 0x89, 0x01, 0x0a, 0x0c, 0x44, 0x65, 0x74, 0x65, 0x63, 0x74,
 	0x6f, 0x72, 0x54, 0x79, 0x70, 0x65, 0x12, 0x0b, 0x0a, 0x07, 0x41, 0x6c, 0x69, 0x62, 0x61, 0x62,
 	0x61, 0x10, 0x00, 0x12, 0x08, 0x0a, 0x04, 0x41, 0x4d, 0x51, 0x50, 0x10, 0x01, 0x12, 0x07, 0x0a,
 	0x03, 0x41, 0x57, 0x53, 0x10, 0x02, 0x12, 0x09, 0x0a, 0x05, 0x41, 0x7a, 0x75, 0x72, 0x65, 0x10,
@@ -4366,12 +4369,13 @@ var file_detector_type_proto_rawDesc = []byte{
 	0x74, 0x6f, 0x70, 0x75, 0x73, 0x44, 0x65, 0x70, 0x6c, 0x6f, 0x79, 0x10, 0xa0, 0x08, 0x12, 0x0f,
 	0x0a, 0x0a, 0x4f, 0x70, 0x65, 0x6e, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x10, 0xa1, 0x08, 0x12,
 	0x1e, 0x0a, 0x19, 0x4e, 0x65, 0x77, 0x52, 0x65, 0x6c, 0x69, 0x63, 0x49, 0x6e, 0x73, 0x69, 0x67,
-	0x68, 0x74, 0x73, 0x49, 0x6e, 0x73, 0x65, 0x72, 0x74, 0x4b, 0x65, 0x79, 0x10, 0xa2, 0x08, 0x42,
-	0x41, 0x5a, 0x3f, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x74, 0x72,
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 }
 
 var (
diff --git a/proto/detector_type.proto b/proto/detector_type.proto
index 18a205db0724..75cf4225e3f2 100644
--- a/proto/detector_type.proto
+++ b/proto/detector_type.proto
@@ -1060,4 +1060,5 @@ enum DetectorType {
   OctopusDeploy = 1056;
   OpenRouter = 1057;
   NewRelicInsightsInsertKey = 1058;
+  DuffelToken = 1059;
 }