Flight data APIs return live positions, schedules, delay history or fares as structured responses that an app can call.
This guide ranks twelve of them on readable plans, trial terms, licence limits for public products and how far each vendor stands alone, putting small specialists ahead of portfolio owners and sales-led data suppliers.
Vendors can pay for more visibility on this website, for example a higher place in a ranking or more room on a page. Commercial relationships can also affect which products we feature and how prominently. Every vendor link is marked the same, whatever the arrangement behind it. How that works.
In short
What flight data apis software does
A flight data API is a web service that returns flight status, aircraft positions, airport schedules, delay records or fares as structured data, billed by call volume, order or licence.
Our order comes from five tests, taken in turn: effort to set up, what you really pay, what happens to your data on the way out, how locked in you are, and the intended customer. One rule overrides the order: smaller vendors take the first three places when the category offers them, and the best-known brands start at four. Our how we work page explains the choice of these five and why we give no mark out of ten.
Flight status and airport data metered in API units, several purchase routes
Ranked #1 of 12 in Best Flight Data APIs in 2026.
Published pricingElsewhere
Quotas are counted in units, not calls, so price a real workload before choosing a plan. The Starter plan allows 5 requests a second, Growth 10 and Scale 20, which matters more for a live airport board than the monthly total.
Flight alerts, search by number, callsign or registration and airport search sit in the same product, which keeps a small build in one place.
What stands out
api-unit metering
marketplace tiers
receiver-data credits
Where it costs you
A quota of units converts into fewer lookups than it seems, as the costlier endpoints use up to six.
The pages read state neither the owner nor the country of establishment.
Right for
Small teams building a flight board or alert feature who want a low entry price
Wrong for
Buyers who need a named company and country in the contract
Not stated by the vendorPublished monthly plans metered in API units; a free marketplace tier and contribution credits also exist
Tracking, schedules and delay history sold in three published tiers
Ranked #2 of 12 in Best Flight Data APIs in 2026.
Published pricingElsewhere
Ten named endpoints cover flight tracking, schedules, routes, delay history, nearby airports, autocomplete, a satellite tracker and an aviation database. That spread suits a travel app that needs lookup data as well as live positions.
Read the call allowance against the renewal price, not the intro one, and note that cancellation works up to seven days before renewal or immediately from the dashboard.
What stands out
intro-month pricing
delay history
schedules and routes
Where it costs you
The discounted price applies to the first month only, after which the plan renews at the regular rate.
The free key is mentioned without any stated limits, so its usefulness cannot be judged from the page.
Right for
Teams that want delay history and future schedules next to live tracking
Wrong for
Anyone planning on the intro price as the running cost
Not stated by the vendorPublished monthly plans with a discounted first month; an unlimited tier is by contact
Five published call-based plans with a short card-backed trial
Ranked #3 of 12 in Best Flight Data APIs in 2026.
Published pricingElsewhere
Rate limits climb from 10 requests per 10 seconds on Starter to 40 on Elite, and call allowances from 4,000 to 1,000,000 a month.
An overage of a fraction of a cent per call applies on every plan, and Enterprise adds an SLA and an account manager. Because only paid responses may be redistributed, a public demo needs a paid plan from the first day.
What stands out
call-based plans
overage billing
card-backed trial
Where it costs you
The trial requires card details and bills automatically afterwards unless cancelled.
Responses from the trial may be used for personal and testing purposes only, not for a public product.
Right for
Developers who want predictable monthly tiers and a clear overage rate
Wrong for
Prototypes that must show real data to the public during testing
Not stated by the vendorPublished monthly plans by call volume with a per-call overage; annual billing discounted
Request-metered flight data with a small non-commercial free allowance
Ranked #4 of 12 in Best Flight Data APIs in 2026.
Free tierPublished pricingElsewhere
Three paid plans step up from 10,000 to 50,000 to 250,000 requests a month, with yearly billing cheaper than monthly. Overage rates fall as the tier rises, so the cheapest plan punishes bursts the most.
Real-time flights, schedules, routes and autocomplete come with paid plans, while the free plan carries no support. That gap is worth weighing before a launch, because an outage on the free tier means waiting rather than asking.
What stands out
non-commercial allowance
request overage
APILayer product
Where it costs you
The free allowance is only 100 requests a month and excludes commercial use.
The footer credits APILayer as the parent, and the pages give no country.
Right for
Students and side projects that need a few flight lookups a month
Wrong for
Commercial products needing support on the lowest tier
Not stated by the vendorFree plan for non-commercial use; published paid tiers with overage per request
Fare comparison, airport timetables and live tracking under one credit scheme
Ranked #5 of 12 in Best Flight Data APIs in 2026.
Published pricingElsewhere
Concurrent request limits of 5, 10 and 50 define the three tiers as much as the credit counts do, so a busy front end may hit the ceiling before the credits run out.
Cancellation is allowed at any time without a fee according to the FAQ. The fare product is the reason to pick it, and the monthly-only restriction is the cost of that choice.
What stands out
fare comparison
credit plans
card payment only
Where it costs you
Yearly plans list only the Flight Tracker and Airport Timetable APIs, not fare data.
Only 20 calls come with sign-up, and cards are the sole payment method.
Right for
Price-comparison builders who also want timetables and tracking
Wrong for
Buyers who need invoicing or a long trial
Not stated by the vendorPublished monthly and yearly credit plans; sign-up gives 20 trial calls
Real-time flights, schedules and reference databases, prices not shown on the homepage
Ranked #6 of 12 in Best Flight Data APIs in 2026.
Pricing on requestElsewhere
The database list is the draw: airports, cities, airlines, fleets, routes, countries, taxes and timezones sit beside the live feeds. That makes it a candidate for enrichment work as well as tracking, for example matching airline codes to fleets.
It ranks below the vendors with readable plans because a buyer cannot check the monthly cost, the quota or the trial terms from the pages read.
What stands out
reference databases
nearby search
name suggestion
Where it costs you
No plan prices or quotas could be read, because the homepage shows only template placeholders.
The dedicated pricing page returned 404 and no trial is mentioned.
Right for
Developers who need reference data such as taxes, fleets and timezones
Wrong for
Buyers who must compare costs before signing up
Not stated by the vendorPlan prices not shown on the homepage read; the pricing URL returned an error
Non-profit ADS-B and Mode-S data for research, with licensed commercial access
Ranked #7 of 12 in Best Flight Data APIs in 2026.
Pricing on requestEurope
The network began in 2012 as a research project between armasuisse, the University of Kaiserslautern and the University of Oxford.
It offers a historical database queried through Trino, scientific datasets, an aircraft database and a live flight map, and volunteers can contribute receivers. Treat it as a data source for analysis, because the written-agreement rule makes automated, production use a negotiation.
What stands out
non-profit association
historical Trino database
receiver community
Where it costs you
A commercial product needs a written licence, and live API use needs an earlier signed agreement.
No price list appears on the pages read, so commercial cost cannot be estimated.
Right for
Researchers and universities studying air traffic with raw receiver data
Wrong for
Start-ups wanting a self-serve key for a live product
SwitzerlandNo prices on the pages read; no charge for non-profit research and education, written licence otherwise
Google Flights search results returned as structured data, sold by search volume
Ranked #8 of 12 in Best Flight Data APIs in 2026.
Free tierPublished pricingNorth America
The plan ladder runs from 1,000 searches a month on Starter to 500,000 on Infrastructure, then larger cloud plans. The calendar and deals endpoints suit price-tracking tools.
The site says each request is discarded after completion, which it presents as a privacy and compliance aid. SerpApi, LLC is shown with an address in Austin, Texas, which makes it one of the few vendors here with a stated country.
What stands out
search-volume tiers
calendar and deals
request discarded
Where it costs you
It covers Google Flights search results only, with no tracking or schedule feeds named on the site.
Cost scales with search count, which grows quickly for fare-comparison pages with many routes.
Right for
Fare-search features and price calendars built on Google Flights results
Wrong for
Operations teams that need live aircraft positions
United StatesFree plan of 250 searches a month; published monthly tiers by search volume
Flight search and booking API charged per confirmed order
Ranked #9 of 12 in Best Flight Data APIs in 2026.
Published pricingEurope
Costs follow sales: a fixed fee on every confirmed order, a percentage on managed content and a charge on each paid ancillary, all billed monthly. Stays, Cars and Ancillaries sit beside Flights.
Duffel Technology Limited is registered in England and Wales. Because revenue per booking drives the bill, a buyer with thin margins should model the search-to-book ratio before committing.
What stands out
booking API
per-order fees
search-to-book ratio
Where it costs you
Searching far more than you sell triggers an extra charge per search.
The pricing page states no test mode or trial period.
Right for
Travel start-ups selling tickets who want zero up-front cost
Wrong for
Products that only need flight status or aircraft tracking
United KingdomPay as you go with published per-order fees; bespoke enterprise pricing
Per-query flight data from three tiers, backed by ADS-B and radar feeds
Ranked #10 of 12 in Best Flight Data APIs in 2026.
Published pricingElsewhere
Fees differ by endpoint, from half a cent for a flight lookup to several cents for a search, and one result set holds 15 records.
Standard adds alerts and historical data with 500,000 history result sets a month, and Premium adds Foresight, Aireon ADS-B and a 99.5% uptime guarantee. The site names ATC feeds, ground stations and space-based ADS-B as sources.
What stands out
per-result-set billing
Foresight predictions
Collins Aerospace owned
Where it costs you
The entry tier excludes business use, so a company must start at Standard.
Volume discounts start only after the first block of monthly usage and apply to the two upper tiers.
Right for
Businesses wanting rich position data and predictive products from one vendor
Wrong for
Hobby projects that need predictable flat monthly costs
Not stated by the vendorPublished per-query fees with monthly minimums on higher tiers; small monthly usage credit
Flight status pages now branded Cirium, with a developer studio link
Ranked #11 of 12 in Best Flight Data APIs in 2026.
Published pricingElsewhere
Three paid features are named: flight alerts, historical flight status and departures and arrivals, each labelled as needing a subscription in the developer page.
Day-of-travel services are described as free, and no trial is mentioned, which leaves the entry price as the only cost signal. The detail of the offer lives on the Cirium developer site rather than on this page, so the entry price alone says little until a buyer reads there.
What stands out
Cirium branding
subscription features
developer studio
Where it costs you
The pages read give no endpoint names, quotas or currency code.
The product now sits behind Cirium branding and a developer portal, so the offer is hard to compare.
Right for
Buyers already inside the Cirium developer portal
Wrong for
Anyone who needs limits and endpoints visible before signing up
Not stated by the vendorSubscriptions start at a published entry price; request limits are not stated
Schedules, status, fares and seat data for airlines and analysts
Ranked #12 of 12 in Best Flight Data APIs in 2026.
Pricing on requestEurope
The data sets run well beyond status: historical schedules, airfare, seats, master data and global flight connections. Analytics products such as Analyser+ sit on top, and files in SSIM format suit industry systems.
A 'Try our data' button exists, but its terms were not read. Position here reflects the sales-led route, which slows setup compared with self-serve APIs, and the absence of any price makes the real cost impossible to compare.
What stands out
schedule datasets
SSIM files
airfare analytics
Where it costs you
Nothing on the homepage states a price, and a direct pricing page does not exist at the usual address.
Buying means talking to sales or booking a demo, which suits a funded project more than a prototype.
Right for
Airlines and analysts who need schedule and fare datasets in bulk
Wrong for
Developers wanting a self-serve key and a card sign-up
United KingdomNo prices on the homepage; contact sales, book a demo or try the data
A flight data API is a web service that returns flight status, aircraft positions, airport schedules, delay records or fares as structured data, billed by call volume, order or licence. These are the questions that actually differ between vendors, in the order we would ask them.
01
Start with pricing transparency
The split is 9 published against 3 quoted. If you want to compare numbers first, start with AeroDataBox, Aviation Edge, FlightLabs, Aviationstack, FlightAPI, SerpApi Google Flights, Duffel, FlightAware AeroAPI, FlightStats.
02
Look at where the vendor sits
Jurisdiction is a buying criterion here. The 12 vendors are spread over 4 countries (Elsewhere 8, Europe 3, North America 1), and the home country determines which disclosure rules bind them.
Reading call quotas in flight data APIs: AeroDataBox and FlightAware AeroAPI
Quotas are the first trap in this market because the unit differs by vendor. AeroDataBox counts API units, where one endpoint costs 1, 2 or 6, while FlightAware AeroAPI bills per result set of 15 records at a different fee for each endpoint. FlightLabs and Aviationstack count plain calls or requests, and SerpApi Google Flights counts searches.
Before comparing plans, write down the three or four endpoints your product will actually call and how often a user triggers each. Then convert every vendor's quota into the same monthly workload and compare the resulting bills. A board refreshing every minute for fifty airports burns a quota far faster than a nightly timetable import.
Convert each quota into your real lookups per month
Check the unit cost of the endpoints you use most
Compare the overage rate, not only the base fee
Trial terms and licence limits: FlightLabs, Aviationstack and OpenSky Network
A key that works in testing may not be licensed for your launch. FlightLabs says trial responses are for personal and testing use only and that its trial needs a card. Aviationstack limits its free plan to non-commercial use. OpenSky Network allows non-profit research and education at no charge, and asks for a written licence for commercial use and a written agreement for any operational API use.
These rules decide whether a public demo is allowed. Read the terms page, not only the pricing page, and find the sentence about redistribution before you build the first screen that shows the data. Ask the vendor by email if the wording is unclear, and keep the reply with your contract records.
Find the commercial-use clause on the terms page
Check whether trial or free responses may be shown publicly
Ask in writing when the terms mention operational use
Flight data APIs for tracking versus booking: Duffel, SerpApi Google Flights and FlightAPI
Many products in this list answer a different question. Duffel is a booking API charged per confirmed order, with an excess search fee past a 1,500 to 1 search-to-book ratio. SerpApi Google Flights returns fare search results, calendars and deals. FlightAPI lists fare comparison next to airport schedules and live tracking. Others, such as Aviation Edge and AirLabs, focus on positions, schedules and reference data.
OAG and FlightAware AeroAPI go further, with schedule and fare datasets or predictive products. Decide first whether you need to show where an aircraft is, when it lands, what a ticket costs or to sell the ticket itself. Buying a fare product to power a status board wastes the quota, and the reverse leaves a price page empty. Matching the product to the question saves more money than any plan discount, and it also keeps the integration code short.
Write the single question your product must answer
Check the named endpoints cover that question
Model a month of searches before choosing per-order pricing
Vendor stability and exit in flight data APIs: FlightStats, OAG and Aviation Edge
Several vendors state little about who stands behind them. The FlightStats page is branded Cirium and sends developers elsewhere, Aviation Edge shows a Clearsky LTD footer without a country, and OAG sells through sales contact with no prices on its homepage. Others, such as FlightLabs and Aviationstack, name the parent company.
For an app you plan to run for years, note how easy cancellation is, whether the response format is documented, and whether a second vendor could replace this one. Keep your own cache of airport and airline reference codes so a switch does not mean rebuilding every screen. Test the replacement vendor on a sample of your busiest routes before cancelling, since field names and coverage differ.
Find the company name and country in the terms
Read the cancellation and renewal wording
Store reference codes locally so a vendor switch stays cheap
What goes wrong most often when buying flight data apis software
Choosing a plan from the headline quota without converting API units, result sets or searches into the lookups your screens really make.
Launching a public page on trial or free responses that the terms limit to personal, testing or non-commercial use.
Budgeting from an introductory first-month rate such as Aviation Edge shows, rather than from the regular renewal price.
Buying a fare or booking API when the product only needs flight status, or paying for tracking when it must sell tickets.
07
Frequently asked questions
6 answers
What is the best flight data apis in 2026?
Our ranking of 12 puts AeroDataBox first. AeroDataBox opens the list because a small team can start cheaply: three direct monthly plans, three marketplace routes and non-expiring credits for sharing ADS-B receiver data.
The catch is the unit maths, since endpoints cost 1, 2 or 6 units, so a quota of 40,000 units buys fewer flight lookups than the headline suggests. The pages name no owner or country.
Which flight data apis tools publish their pricing?
Published pricing exists for 9 products on this page:
AeroDataBox: Published monthly plans metered in API units; a free marketplace tier and contribution credits also exist.
Aviation Edge: Published monthly plans with a discounted first month; an unlimited tier is by contact.
FlightLabs: Published monthly plans by call volume with a per-call overage; annual billing discounted.
Aviationstack: Free plan for non-commercial use; published paid tiers with overage per request.
FlightAPI: Published monthly and yearly credit plans; sign-up gives 20 trial calls.
SerpApi Google Flights: Free plan of 250 searches a month; published monthly tiers by search volume.
Duffel: Pay as you go with published per-order fees; bespoke enterprise pricing.
FlightAware AeroAPI: Published per-query fees with monthly minimums on higher tiers; small monthly usage credit.
FlightStats: Subscriptions start at a published entry price; request limits are not stated.
The other 3 quote per organisation.
Is there a free flight data apis tool?
Aviationstack, SerpApi Google Flights offer a free tier or a free self-hosted edition.
Where are these flight data apis vendors established?
In 4 countries across 3 regions: Elsewhere 8, Europe 3, North America 1.
AeroDataBox: Not stated by the vendor.
Aviation Edge: Not stated by the vendor.
FlightLabs: Not stated by the vendor.
Aviationstack: Not stated by the vendor.
FlightAPI: Not stated by the vendor.
AirLabs: Not stated by the vendor.
OpenSky Network: Switzerland.
SerpApi Google Flights: United States.
Duffel: United Kingdom.
FlightAware AeroAPI: Not stated by the vendor.
FlightStats: Not stated by the vendor.
OAG: United Kingdom.
What should you use instead of AeroDataBox?
Second is Aviation Edge, which suits teams that want delay history and future schedules next to live tracking. Third is FlightLabs, which suits Developers who want predictable monthly tiers and a clear overage rate.
Who should not buy AeroDataBox?
Buyers who need a named company and country in the contract. A quota of units converts into fewer lookups than it seems, as the costlier endpoints use up to six..
This list covers 12 flight data apis products. A product we left out can be put to us by its maker, with a short note on its purpose and its customers; we decide on inclusion ourselves. The rules are under software advice.
