JavaScript conference tickets rarely mean the same thing twice. One "hybrid" ticket gives you one day on site and one day on a stream. Another event spends two days on workshops before its single conference day. A front-end developer comparing prices across these is comparing different amounts of time.
This page sticks to general JavaScript conferences that already have exact 2027 dates, and says how many days each ticket covers. React-only events are listed separately under "Other". Where an organizer sells remote, student or indie tickets, the section says so.
Dates, cities, and starting ticket prices come from each organizer's official site. Three prices were read on the organizers' ticket pages in a browser, because they only show inside checkout widgets. Early-bird prices step up on fixed dates, so confirm the live figure at checkout. The method is on How we review tools.
JSWorld Conference
JSWorld Conference reaches its 10th edition in 2027. It is a JavaScript conference held in-person at Theater Amsterdam.
Best for: Front-end and JavaScript developers in the Netherlands and nearby countries who want one conference day early in the year.
Dates and city: March 19, 2027. Theater Amsterdam, Amsterdam. In-person.
What you actually get: A conference day in a theater venue. The site cites 3,000+ live stream viewers from past editions, but does not list a 2027 stream ticket.
Notable limitations:
- The event listing shows one date, March 19. The site's meta text calls it a 3-day celebration, so check the schedule for side events.
- Prices exclude 21% Dutch VAT. The Regular ticket at 399€ is currently unavailable.
- No student or online ticket is listed on the homepage.
Tickets: Early Bird 299€ plus 21% VAT (down from 399€). Regular 399€ plus VAT, currently unavailable. Combo with Vue.js Amsterdam (March 18-19) 699€ plus VAT. A 13.99€ booking fee was shown with the combo. Sold through TicketTailor from the Tickets button on the official site.
CityJS London
CityJS London is a community-priced JavaScript conference. The 2027 edition runs three days in April: a free evening meetup and workshops first, then one full conference day at Kensington Town Hall.
Best for: JavaScript and Node.js developers in the UK who want a conference day plus optional workshops. Students and people between jobs, since the site mentions student discounts.
Dates and city: April 21-23, 2027. London. The full conference day is April 23 at Kensington Town Hall. Workshop venues for April 21-22 are listed as TBC.
What you actually get: Day one has a free evening meetup and a daytime professional workshop block. Day two has professional and free workshops. Day three is the conference day, with 30+ speakers according to the site.
Notable limitations:
- The talks are on one day. The first two days are workshops and a meetup.
- Workshop venues are still TBC.
- Prices rise in batches: Batch 2 from January 2027, Late Bird from March. The site does not say whether VAT is included.
Tickets: Standard Conference Ticket £194 (Standard Batch 1, November 1, 2026 to January 15, 2027), covering the main conference day on April 23 plus the free events. Then £272 (Batch 2, from January) and £380 (Late Bird, from March). A £75 ticket is also listed; check its conditions at checkout. Combo (workshop plus conference) and Group tickets for 2, 3 or 5 people are also sold. VAT is not stated.
JSNation
JSNation is GitNation's JavaScript conference in Amsterdam. It runs as a hybrid event: one in-person day at Kromhouthal, then one remote day.
Best for: Developers who want a large Amsterdam JavaScript conference and can watch the second day from home.
Dates and city: May 21, 2027 in-person at Kromhouthal, Gedempt Hamerkanaal 231, Amsterdam. May 25, 2027 remote. Workshops on May 21. An afterparty on May 21 and walking and boat tours on May 22.
What you actually get: The Hybrid Ticket covers JSNation in person on May 21 and remote on May 25. It does not include React Summit, which runs at the same venue on the same dates with its own ticket. The remote Multipass covers both events and other GitNation conferences.
Notable limitations:
- One in-person day. The second conference day is remote only.
- A JSNation ticket does not get you into React Summit. You need a second ticket or the remote Multipass.
- No student ticket is listed.
Tickets: Hybrid Ticket (early bird) 350€: in-person May 21, remote May 25. Remote Ticket (early bird) 180€: remote on May 21 and 25. Remote Full Ticket with Multipass and Deep Dives: 17€ per month, covering JSNation, React Summit and other GitNation conferences remotely.
Does a JSNation ticket include React Summit?
No. They are separate GitNation conferences on separate sites, with separate Hybrid and Remote tickets. Both list May 21 at Kromhouthal and May 25 remote for 2027. The only listed ticket that covers both is the remote Multipass, and it gives no in-person access.
JSHeroes
JSHeroes is a community JavaScript conference in Cluj-Napoca, Romania. Two in-person conference days in late May.
Best for: Developers in Central and Eastern Europe who want two full in-person conference days.
Dates and city: May 27-28, 2027. Cluj-Napoca, Romania. The official ticket page lists Grand Hotel Italia, Strada Trifoiului 2.
What you actually get: Two in-person conference days. Tickets include lunch and coffee breaks on both days.
Notable limitations:
- The ticket section is headed "Register interest", so sales may not be fully open.
- Only 30 early-bird tickets are listed. After that, Regular Birds are 210€.
- The ticket page says VAT may be added if the organizers become VAT payers.
Tickets: Early Birds 170€ (30 available). Regular Birds 210€. Late Birds 270€. Lunch and coffee breaks included.
CascadiaJS
CascadiaJS is a JavaScript conference for the Pacific Northwest. The 2027 edition is two days at the Seattle Convention Center. In-person.
Best for: JavaScript developers on the US and Canadian west coast. Indie developers, educators, non-profit staff and people at small companies, who get a lower price.
Dates and city: June 7-8, 2027. Seattle Convention Center, Seattle, Washington.
What you actually get: Two conference days. A standard Conference ticket and an Indie Discount ticket.
Notable limitations:
- The lower price applies if you register by April 29, 2027. After that, the Conference ticket is $799.
- The 2027 speaker list is not on the homepage yet, so judge the program later.
Tickets: Conference $499 if registered by April 29, 2027, then $799. Indie Discount $299, then $599, for people between jobs, self-employed, at an educational institution or non-profit, or at a company with fewer than 10 employees.
Other JavaScript conferences worth considering
React Summit 2027 lists May 21 in Amsterdam and May 25 remote, at KromhoutHal, with two tracks. Early-bird prices: Hybrid Ticket 350€, Remote Ticket 180€. It shares the venue and dates with JSNation, but each event sells its own ticket. Pick React Summit for React work, JSNation for JavaScript in general.
React Miami 2027 is April 29-30, 2027 in downtown Miami. The venue is the Hyatt Regency Miami. The official ticket page says tickets start at $399. It is React-only, which is why it sits here and not in the table.
React Advanced London ran October 23 and 26, 2026 at The Brewery in London, one hybrid day and one remote day. 2027 dates are not on the site yet.
Node Congress ran online on March 26-27, 2026. The site marks that event as over and does not show a 2027 edition yet.
How we picked these conferences
We kept general JavaScript conferences whose 2027 edition has exact dates on the organizer's site, and applied the same test to every candidate. React-only events with 2027 dates, React Miami and React Summit, are listed under "Other" so the table compares like with like. Missing prices did not exclude an event. Dates and prices were checked on the organizers' sites on 5 Nov 2026. The "From" column shows the cheapest ticket that gets you into the main talks.
FAQs
Which JavaScript conference should I pick in 2027?
For a large Amsterdam event, JSNation, with one day on site. For two full days in person, JSHeroes in Cluj or CascadiaJS in Seattle. For the UK, CityJS London. For an early-year single day, JSWorld in Amsterdam.
Are JSNation and React Summit the same event?
No. Both list May 21 at Kromhouthal in Amsterdam and May 25 remote, but each sells its own Hybrid and Remote tickets. A JSNation ticket does not include React Summit. The remote Multipass covers both, without in-person access.
Are there remote JavaScript conferences in 2027?
Yes. JSNation and React Summit each sell a Remote Ticket at 180€ early bird for May 21 and 25. GitNation also sells a Multipass subscription for remote access to its conferences.
Is there a student or indie discount?
CascadiaJS has an Indie Discount at $299 before April 29, 2027. CityJS London mentions student discounts and lists a £75 ticket; check its conditions at checkout. JSNation, JSHeroes and JSWorld do not list a student ticket on their official pages.
Can I do JSNation and JSHeroes on one trip?
On the calendar, yes. Amsterdam on May 21, Cluj-Napoca on May 27-28. JSNation's remote day on May 25 can be watched from anywhere. That is two flights and about a week in Europe.
Bottom line
Decide how many days you want on site, then pick the city. One Amsterdam day in March: JSWorld. A conference day plus workshops in London: CityJS. One big Amsterdam day in May: JSNation, with React Summit on a separate ticket. Two full days: JSHeroes or CascadiaJS. For a wider view of the stack, see our full stack conferences page.
