FlexPay is integrated to an incredible number of gateways. Most of them are listed below, however there may be more that aren’t yet added on this list. So, if you’re interested in running with FlexPay, and you don’t see your gateway on this list, feel free to ask us about it.
| Gateway | Website |
| Acquired | acquired.com |
| Adyen | adyen.com |
| AGP (Access Group Processing) | accessgroupprocessing.com |
| Authorize.Net | authorize.net |
| Bambora (formerly ePay, Beanstream) | bambora.com |
| Banco Sabadell (via Redsys) | redsys.es |
| Barclaycard Smartpay | barclaycardsmartpay.com |
| Barclays ePDQ Extra Plus | barclaycard.co.uk |
| Bluefin (formerly PayConex) | bluefin.com |
| BluePay | bluepay.com |
| BlueSnap | bluesnap.com |
| Borgun | borgun.is |
| BPoint | bpoint.com.au |
| Braintree | braintreepaymentsolutions.com |
| BridgePay (BridgeComm) | bridgepaynetwork.com |
| CardConnect (CardPointe) | cardconnect.com |
| CardProcess (now VR Payment) | cardprocess.de |
| Cardstream | cardstream.com |
| CatalunyaCaixa (via Redsys) | redsys.es |
| Cayan (TSYS) | cayan.com |
| Cecabank | ceca.es |
| CenPOS (Elavon) | cenpos.com |
| Chase Paymentech (Orbital) | chasepaymentech.com |
| Checkout | checkout.com |
| Clearhaus | clearhaus.com |
| Conekta | conekta.com |
| Creditcall (NMI) | creditcall.com |
| Credorax | credorax.com |
| CT-Payment (now PayFacto) | ctpaiement.com |
| CyberSource | cybersource.com |
| DataCash (now MasterCard Payment Gateway Service) | datacash.com |
| Decidir | decidir.com |
| Diamond Mind | diamondmindinc.com |
| DIBS (now Nets) | dibspayment.com |
| dLocal | dlocal.com |
| EBANX | ebanx.com |
| Elavon | elavon.com |
| ePay (now Bambora) | epay.dk |
| eWAY (eWAY Rapid) | eway.com.au |
| Fat Zebra | fatzebra.com.au |
| First Data Global Gateway | firstdata.com |
| First Pay | 1stpaygateway.net |
| FIS Global | fisglobal.com |
| Fiserv | fiserv.com |
| Forte | forte.net |
| Global Gateway e4 (now First Data) | globalgatewaye4.firstdata.com |
| Global Payments (Global Iris, Global Transport) | globalpaymentsinc.com |
| GlobalCollect (now Ingenico ePayments) | globalcollect.com |
| Heartland Payment Systems | heartlandpaymentsystems.com |
| iATS Payments | iatspayments.com |
| Ingenico ePayments (formerly GlobalCollect, Ogone) | ingenico.com |
| Inovio | inoviopay.com |
| iVeri | iveri.com |
| IXOPAY | ixopay.com |
| JetPay (now NCR) | jetpaygateway.com |
| Kushki | kushkipagos.com |
| Latitude19 | l19tech.com |
| MasterCard Payment Gateway Service (formerly DataCash, TNS) | mastercard.com |
| MaxiPago! | maxipago.com |
| MercadoPago | mercadopago.com |
| Merchant e-Solutions | merchante.com |
| Merchant Partners | merchantpartners.com |
| Merchant Warrior | merchantwarrior.com |
| Mojopay | mojopay.com |
| Moneris | moneris.com |
| Mundipagg | mundipagg.com |
| MX Merchant | mxmerchant.com |
| NAB Transact | nab.com.au |
| NETbilling | netbilling.com |
| NetPay | netpay.mx |
| Nets (formerly DIBS) | nets.eu |
| NMI | nmi.com |
| Openpay | openpay.mx |
| Orbital (Chase Paymentech) | chasepaymentech.com |
| Paya (formerly Sage Payment Solutions) | paya.com |
| PayCertify | paycertify.com |
| Payeezy (formerly GGE4) | payeezy.com |
| PayEx | payex.com |
| PayFacto (formerly CT-Payment) | payfacto.com |
| PayJunction | payjunction.com |
| Paymentez | paymentez.com |
| Paymill | paymill.com |
| PayPal (Payflow Pro) | paypal.com |
| PaySafe (formerly Meritus, Optimal Payments) | paysafe.com |
| Paystation | paystation.co.nz |
| PayU Latam | payulatam.com |
| PayVector | payvector.co.uk |
| Payvision (formerly Acapture) | payvision.com |
| Pex | pexintl.com |
| Pin Payments | pin.net.au |
| Processing.com | processing.com |
| ProPay | propay.com |
| PSiGate | psigate.com |
| Quantum | quantumgateway.com |
| QuickBooks Merchant Services | quickbooks.intuit.com |
| QuickPay | quickpay.net |
| Qvalent | qvalent.com |
| Realex | realexpayments.com |
| S5 | s5.dk |
| SafeCharge | safecharge.com |
| SagePay | sagepay.co.uk |
| SecurePay Australia | securepay.com.au |
| SecurionPay | securionpay.com |
| Stripe (Stripe Connect, Stripe Payment Intents) | stripe.com |
| TNS (now MasterCard Payment Gateway Service) | tnsi.com |
| Transact Pro | transactpro.eu |
| TrustCommerce | trustcommerce.com |
| TSYS (TSYS Multipass, formerly TransFirst) | tsys.com |
| USA ePay | usaepay.info |
| Vanco | vancopayments.com |
| VisaNet Peru | visanet.com.pe |
| VR Payment (formerly CardProcess) | vr-payment.de |
| WePay | wepay.com |
| Windcave (formerly Payment Express) | windcave.com |
| Wirecard | wirecard.com |
| WorldPay (formerly Element, Litle, Mercury, Vantiv) | online.worldpay.com |