$100K ARRin 2 years

3 milestones

Current revenue

$1.3M ARRas of December 2024Source

60% owned by Travelzoo (public). Q4 2024 revenue +19% YoY to $1.3M. 3.6M members.

Jack's Flight Club: de pasatiempo a 1M+ de miembros

Founder

Jack Sheldon

Co-Fundadores•Non-technical•UK

Commitment

Full-time

Experience

First-time

Product

Jack's Flight Club

Boletín de correo electrónico y aplicación para viajeros del Reino Unido que encuentran ofertas de vuelos baratos y tarifas por error.

Type

SaaS

Industry

Viajes

Model

Suscripción

Marketing Strategy

How Jack acquired customers

Growth Channel

Boca a Boca

Also Used

Comunidades

Tech Stack

Tools used to build Jack's Flight Club

MailchimpWordPressCustom deal findersStripe

The Full Story

TL;DR

Jack convirtió su pasatiempo personal de búsqueda de vuelos baratos en el principal servicio de vuelos baratos del Reino Unido.

Soy Jack Sheldon, un buscador de vuelos baratos de por vida y gurú de vacaciones para mis amigos. Envié el primer boletín de Jack's Flight Club en septiembre de 2016.

La fase pasatiempo

Llevaba años encontrando ofertas de vuelos increíbles, capturando tarifas por error, dumping de combustible y errores de precios que las aerolíneas ocasionalmente cometen. Mis amigos me pedían que compartiera, así que empecé una simple lista de correo.

Construyendo el negocio

Jack's Flight Club ayuda a los usuarios a encontrar ofertas de vuelos baratos. Llevamos vuelos baratos a nuestros miembros hacia destinos increíbles alrededor del mundo, ahorrando un promedio de £402 por boleto reservado.

Crecimiento rápido

Dentro de 12 meses del lanzamiento, estaba en el borde de hacer mi primer millón. El boletín creció orgánicamente por boca a boca: cuando le envías a alguien un vuelo de £300 a Japón que normalmente cuesta £900, se lo dicen a sus amigos.

El equipo

Cofundé la empresa con Phil Wintermantle. Juntos hemos hecho crecer Jack's Flight Club a más de 1 millón de miembros en el Reino Unido, Europa y Estados Unidos.

Cobertura mediática

Hemos sido presentados en el Telegraph, el Independent, el Sunday Times y muchas otras publicaciones globales. Esta cobertura mediática aceleró el crecimiento significativamente.

Lanzamiento: septiembre de 2016
Miembros: 1M+
Ahorro promedio por boleto: £402
Regiones: Reino Unido, Europa, EE.UU.
Publicado en: Telegraph, Independent, Sunday Times

Key Takeaways

El conocimiento experto en un nicho puede convertirse en un producto valioso

La cobertura mediática acelera el crecimiento, haz que tu historia sea digna de noticia

El boca a boca funciona cuando ahorras a las personas dinero significativo

El enfoque regional puede ayudarte a dominar antes de expandirte globalmente

Originally published onJack's Flight Club

Founder proof brief

A one-page proof brief turns Jack's Jack's Flight Club playbook into your next test.

See what it covers before you sign up: the pattern worth copying, the channel to test, and the risk to avoid when you adapt this story.

Pattern

$100K ARR

Channel

Boca a Boca

Output

Action checklist

What a proof brief covers

A one-page brief that turns Jack's pattern into a testable plan
Channel bet: start from Boca a Boca
A risk check before copying the Jack's Flight Club playbook

See what a proof brief covers

See what it covers first. Create an account only if you choose to unlock.

Inspired by Jack's journey? Generate a business idea in the Viajes space using AI and real founder data.

Milestone Journey

Jack achieved 3 milestones on the path to $100K ARR

Primer Cliente

1 month

October 2016

70% faster

vs avg 3 months

+11 months to next milestone

$10K MRR

$10,000

1 year

September 2017

42% faster

vs avg 1 year

+1 year to next milestone

$100K ARR

$1,000,000

2 years

September 2018

32% faster

vs avg 3 years

2 years

Total journey time

Milestones achieved

Jack's Path to $100K ARRPremium

The journey, decisions, and context behind this milestone

How Jack actually did it

6/7 funnel stages sourced

Reconstructed from Jack's own published sources. Quoted claims are the founder's words, verified verbatim; anything marked as our analysis is exactly that.

Where the idea came from

Personal pain3y domain experience

Jack had spent three years personally hunting mistake fares and pricing glitches to visit more than 40 countries before turning the habit into a product. He began emailing the deals he found directly to his own friends, and framed the newsletter as a spin-off of that personal hobby rather than something built to answer a specific request.

“Over the last 3 years, I've been able to visit over 40 countries”

Jack Sheldon (u/jack_sheldon), first Reddit AMA on r/IAmA, "I am a UK cheap flight hacker, here to help you find cheap fares and learn some tricks! AMA!"

Validation

Built first, validated after

MvpValidated2700 signups

Jack shipped the actual free newsletter to his own contacts rather than running a separate landing-page or survey test first; organic signups and sharing over the following weeks served as the validation signal.

Eight weeks after starting the free email alert newsletter, it had grown past 2,700 subscribers purely through personal sharing, with no advertising.

“in that time it has grown to >2700 subscribers”

Jack Sheldon (u/jack_sheldon), first Reddit AMA on r/IAmA, "I am a UK cheap flight hacker, here to help you find cheap fares and learn some tricks! AMA!"

First test users

Personal network~2700 usersFree testers

Jack emailed his cheap-flight finds directly to his own friends and contacts. Within eight weeks that had grown by word of mouth to over 2,700 subscribers.

“8 weeks ago I started a free email alert newsletter sending out cheap flight deals to my mates”

Jack Sheldon (u/jack_sheldon), first Reddit AMA on r/IAmA, "I am a UK cheap flight hacker, here to help you find cheap fares and learn some tricks! AMA!"

First paying customer

Existing audienceFree to paid upgrade

The first paying customers came from converting Jack's existing free subscriber base once he introduced a freemium tier. Existing subscribers were offered a discount on the new paid option, and a reported 2,500 of roughly 165,000 subscribers upgraded to paid. This happened well after the free list had scaled into the tens of thousands, not in the newsletter's first weeks.

Per Courier, "How Jack's Flight Club became a money-making newsletter" (fetched via Wayback Machine, original page no longer live)

Acquisition channels, and whether they worked

Word of MouthLaunchWorked

Grew to nearly 3,000 subscribers in the first three months with no advertising, per Jack's own account and matching third-party reporting.

Jack credits the newsletter's early growth entirely to organic sharing rather than any paid promotion.

“No advertising - just word of mouth really so far. People tend to share a lot when they score a deal, which is nice!!”

Jack Sheldon (u/jack_sheldon), second Reddit AMA on r/IAmA, "I am some guy who's saved people £500,000 on airfare in the last 5 months. AMA!"

Communities · Reddit r/IAmA (self-hosted AMA)LaunchWorked

Jack posted an unpaid, self-hosted "Ask Me Anything" about UK flight hacking on r/IAmA, answered questions live for hours, and pointed to his newsletter throughout the thread.

“This post has taken me from just under 3000 subscribers to over 45,000 and counting.”

Jack Sheldon (u/jack_sheldon), first Reddit AMA on r/IAmA, "I am a UK cheap flight hacker, here to help you find cheap fares and learn some tricks! AMA!"

How it changed as they grew

At launch: 1 person (Jack Sheldon alone, per his own account across the newsletter's first seven months)

Bootstrapped · 2016-09

Pricing new tier: free-only newsletter → freemium: a paid annual tier (originally £35/year) for more frequent alerts, alongside the existing free tier

Jack considered a full paywall too aggressive and rejected affiliate-link monetization as inconsistent with the newsletter's purpose, settling on a freemium model instead.

Per Courier, "How Jack's Flight Club became a money-making newsletter" (fetched via Wayback Machine, original page no longer live)

Sources (2 in the founder's own words)

Jack Sheldon (u/jack_sheldon), second Reddit AMA on r/IAmA, "I am some guy who's saved people £500,000 on airfare in the last 5 months. AMA!" · founder-authored · 2017-04
Jack Sheldon (u/jack_sheldon), first Reddit AMA on r/IAmA, "I am a UK cheap flight hacker, here to help you find cheap fares and learn some tricks! AMA!" · founder-authored · 2016-11
Jack's Flight Club, Press page · third party
Wikipedia, "Jack's Flight Club" · third party
Courier, "How Jack's Flight Club became a money-making newsletter" (fetched via Wayback Machine, original page no longer live) · third party · 2018-07

Launch Strategy

How they introduced the product to the world

Soft Launch

Initial go-to-market approach

Low risk — lets you iterate quietly

Validation

How they tested demand before building

MVP

Method used to confirm market interest

Most common approach — build and learn fast

Launch Pricing

Price point when the product first launched

Gratis

Initial pricing strategy

Common for building initial traction

Starting Audience

Whether they had followers before launch

Started from Zero

Built audience alongside the product

63% of founders in our database started from zero

Time Investment

Average weekly hours during building phase

50 hrs

per week on average

Full-time dedication

Initial Investment

Capital required to get started

$38

in startup costs

Minimal investment — software and domains

Biggest Challenge

Escalar de pasatiempo a negocio sostenible mientras se mantiene la calidad de las ofertas

Unlock Jack's Full Journey

See the complete breakdown: launch strategy, validation methods, startup costs, expert analysis, replication playbook, and more actionable insights.

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Frequently asked questions

How much does Jack's Flight Club make?

Jack's Flight Club reports $1.3M ARR as of December 2024. 60% owned by Travelzoo (public). Q4 2024 revenue +19% YoY to $1.3M. 3.6M members. Source: Travelzoo Q4 2024 earnings.

What is Jack's Flight Club?

Boletín de correo electrónico y aplicación para viajeros del Reino Unido que encuentran ofertas de vuelos baratos y tarifas por error. It operates in Viajes.

How long did it take Jack's Flight Club to reach $100k arr?

Jack Sheldon took 2 years to reach $100k arr with Jack's Flight Club.

Was Jack Sheldon a solo founder?

No. Jack Sheldon built Jack's Flight Club with co-founders.

What marketing channel did Jack's Flight Club use to grow?

Jack's Flight Club grew primarily through Boca a Boca.

What industry is Jack's Flight Club in?

Jack's Flight Club operates in Viajes.

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The Full Story

TL;DR

Jack convirtió su pasatiempo personal de búsqueda de vuelos baratos en el principal servicio de vuelos baratos del Reino Unido.

Soy Jack Sheldon, un buscador de vuelos baratos de por vida y gurú de vacaciones para mis amigos. Envié el primer boletín de Jack's Flight Club en septiembre de 2016.