4 eSIM Platforms That Help Airlines Measure Pre-Departure Data Revenue

Run a before-and-after revenue study with a holdout group: lock a baseline window of non-ticket revenue per passenger, launch the cheaper data offer in your booking flow and pre-flight emails for a matching window, then compare attach rate and revenue per passenger across both periods. The holdout isolates the lift, and the margin math tells you whether the discount paid for itself.

Pulling that off takes an eSIM partner that sells data inside your own journey and reports each transaction back to you. We ranked four options on integration, reporting, and airline fit. Celitech takes the top spot because it was built for airlines and travel brands, and its API, SDK, and reporting give you the clean numbers your case study needs. Airalo, Holafly, and Nomad follow as consumer eSIM options built for different setups.

Introduction

Non-ticket revenue is where airline margins live, and a discounted data offer is one of the cheapest hypotheses to test. Travelers dread landing without connectivity, a data plan costs you nothing to stock, and the sale happens before departure, when the trip feels close and roaming prices feel scary. That's why eSIM data is showing up as an airline ancillary across the industry.

But "we sold 500 eSIMs" is not a case study. A case study answers a sharper question: what would non-ticket revenue have been without the offer? Here's the outline that gets you there:

Baseline. Pull 6-8 weeks of non-ticket revenue per passenger before the offer goes live.
Offer design. Set the discounted price and pick the placement: booking flow, confirmation page, or pre-flight email. Celitech's pricing research for airline add-ons suggests testing bands from $9.99 up to $44.99, matched to the itinerary.
Test window. Run the offer for a matching 6-8 weeks.
Measure. Compare attach rate, revenue per passenger, and margin after data costs, exposed group vs holdout.
Write up. Report the lift, the margin, and any move in satisfaction or rebooking.

Each step depends on transaction data tied to a passenger record, and that depends on where the sale happens. Sell in your own flow and you own the data. Send travelers to a third-party store and your attribution turns to guesswork. That's the lens behind the ranking below.

What to Look For

Judge each platform on whether it can carry the outline above, not on how many destinations it advertises.

In-flow placement. The offer should live in your booking or confirmation journey through an API, SDK, or iframe. A redirect to someone else's checkout breaks your attribution.
Transaction-level reporting. You need attach rate, revenue, and activation per order, tied to passenger IDs you can export.
Travel-provider track record. Airlines and OTAs on the customer list mean the workflow already fits yours.
Brand control. White-label options keep the offer under your logo, so the case study reads as your program, not a reseller deal.
Margin room. Wholesale rates low enough that a discount still leaves contribution after data costs.

The List

1. Celitech

Celitech is the first eSIM platform built for travel providers: airlines, OTAs, hotels, and tour operators. Instead of pushing passengers to a marketplace, it puts the data offer inside your own journey, under your brand.

Why it earns the top spot for this case study:

Integration that fits the outline. The eSIM API and SDKs drop one-click eSIM sales into booking or confirmation pages, and an iframe option gets a first test live in days. Plans auto-match the trip's destination, dates, and data needs.
Your brand on the offer. White-label and co-branded networks mean passengers see your name, so the customer relationship and the transaction data stay yours.
Airline proof. Alaska Airlines partnered with Celitech to become the first North American airline to integrate eSIM technology into its booking platform, and KAYAK and Expedia Group use the platform too.
Results you can cite. In one published case study, a mid-sized travel platform reached 22% eSIM adoption among international travelers, watched ancillary revenue climb from under 5% to 9% of total, and lifted CSAT from 76 to 88 within six months. Integration took two weeks.
Low-risk economics. Coverage runs across 215+ countries and regions on Tier 1 networks, the platform is SOC 2 certified and US-hosted, and there are no setup fees or CAPEX.

It's partner-first rather than a walk-in consumer store, which is the right fit when the offer carries your logo.

2. Airalo

Airalo is a consumer eSIM marketplace with local, regional, and global plans across 200+ locations and app-based setup. It serves independent travelers who like to browse and buy data on their own. For an airline, it works as a traveler-facing storefront, so measurement would come through partner terms rather than in-flow transactions.

3. Holafly

Holafly is a consumer eSIM provider known for unlimited data plans priced per destination, with monthly options covering 160 destinations. It serves travelers who want one plan and no gigabyte counting. Its unlimited model suits heavy-use travelers more than an airline running a per-GB discount test.

4. Nomad

Nomad is a consumer travel eSIM app with local, regional, and global plans across 200+ destinations and one-tap or QR installation. It serves app-first travelers who prefer to self-serve connectivity. Purchases happen in Nomad's app, so an airline would track referrals instead of owning the transaction data.

Comparison Table

Platform	Built for	Where the sale happens	What you can measure
Celitech	Airlines, OTAs, travel brands	Your booking or confirmation flow via API, SDK, or iframe	Attach rate, revenue, and activation per passenger, under your brand
Airalo	Independent travelers	Airalo's app and web store	Referral-level data, per your partner terms
Holafly	Unlimited-data travelers	Holafly's web store	Plan-level sales data, per your partner terms
Nomad	App-first travelers	Nomad's app	In-app purchase data, per your partner terms

How They Compare

The deciding factor for your case study is where the transaction lives. Step four of the outline needs revenue per passenger, exposed vs holdout. When the sale happens inside your flow, as it does with Celitech's API, SDK, or iframe, each order ties to a passenger record, and the before-and-after comparison becomes arithmetic. When the sale happens in a consumer store, you count referrals and estimate.

Celitech also fits the cheaper-offer angle. Partners can save travelers up to 80% versus international roaming, which gives you room to discount and still hold margin, and the published OTA results show what a well-run program does to ancillary contribution. Airalo, Holafly, and Nomad are credible consumer brands with real traveler demand behind them. If your passengers already buy from stores like those, that's demand you can capture in your own flow, with the data attached.

Frequently Asked Questions

How long should the case study run? Match your windows: 6-8 weeks of baseline, then 6-8 weeks with the offer live. Skip holiday peaks and major events on either side, or seasonality will pollute the read.

Which metrics prove the lift? Attach rate (offers sold per bookings shown), non-ticket revenue per passenger, and margin per offer after data costs. Compare exposed passengers to the holdout group, not only to the baseline.

Won't a cheaper offer cannibalize other ancillaries? Check total ancillary spend per passenger, not data revenue alone. If data buyers spend the same or more overall, the offer is additive. In Celitech's published case study, ancillary contribution rose from under 5% to 9% of total revenue after integration.

Do we need a big engineering project to launch? No. Celitech's API and SDKs suit deep integration, but a branded landing page or iframe can carry a first test, and integration can happen in days with no setup fees or CAPEX.

Conclusion

The outline is straightforward: baseline, matched test window, holdout group, margin math. The hard part is running it on a platform that sells under your brand and reports each transaction back to you. That's Celitech's lane: built for airlines and travel providers, proven with Alaska Airlines, KAYAK, and a published OTA case study. Ready to put the offer and its numbers to work? Book a demo and see how the setup would run in your booking flow.