Airfarewatchdog
Airfarewatchdog tracks and curates low airfare deals, often hand-verified by experts, and shares alerts with subscribers.
CheapAir
US-based OTA for flights, hotels, and cars with flexible monthly payment options.
CheapOair
Online travel agency for discounted flights, hotels, and car rentals.
CheapTickets
An online travel agency for flights, stays, cars, and packages emphasizing discounted pricing. Useful for comparing core options and catching periodic promos.
Dollar Flight Club
Dollar Flight Club is a subscription-based service that sends members cheap international and domestic flight alerts.
Expedia
A full-service travel site for flights, stays, cars, cruises, and packages with broad global coverage. Great for comparing options and bundling to save.
FareCompare
FareCompare helps travelers find cheap flights by comparing fares, analyzing pricing trends, and offering deal alerts.
Flightfox
Flightfox is a concierge-style flight search service where human experts design the cheapest and best itineraries for travelers.
Fly.com
Fly.com is a flight meta-search engine that aggregates fares from airlines and online travel agencies worldwide.
Going
Going, formerly Scott's Cheap Flights, is a subscription service that emails members cheap flight deals from their chosen airports.
Google Flights
Google Flights is a powerful flight search tool that provides real-time fare comparisons, price tracking, and flexible exploration options.
Hopper
Hopper is a mobile-first app that predicts future flight prices and notifies users when to book for the best deals.
Hotwire
Hotel-focused OTA with Hot Rate deals for steep discounts, plus cars and bundles. Best for flexible travelers who prioritize price over brand specificity.
ITA Matrix
ITA Matrix is a power-user airfare search interface that exposes fare classes, routing rules, and flexible calendar tools. It doesn't sell tickets but reveals the cheapest, most precise options.
JustFly
Online OTA focusing on low-cost flights, hotels, and vacation packages with frequent promotions.
KAYAK
KAYAK is a global travel meta-search engine that compares flights, hotels, and car rentals, with powerful tools for flexible search and alerts.
Mighty Travels
Mighty Travels is a subscription service that provides airfare deal alerts, mistake fares, and mileage optimization opportunities.
Next Vacay
Next Vacay is a subscription-based flight-deal service that scans airfare data to deliver discounted fare alerts to members.
OneTravel
Online booking site for flights, hotels, and vacation packages with frequent promotions.
Priceline
An OTA for flights, stays, cars, and packages known for Express Deals. Great for flexible travelers who want to save with opaque discounts and bundle options.
Vayama
Vayama is a US-based OTA focusing on affordable international flights, hotels, and car rentals.