Top 3 Travel Agencies for Booking Flights in 2025

When you're planning a flight, choosing the right platform to book your flight can save you time, stress, and money. Here's how Expedia, Kayak, and Booking.com rank against each other when it comes to booking flights:

#1: Expedia

Best For: All-in-one vacation packages with flights, hotels, and car rentals‍

Why It’s Ranked #1: Expedia leads the pack because of its seamless bundling of flights with hotels, car rentals, and activities. It’s perfect for travelers who want to plan everything in one place. Expedia’s loyalty program also lets you earn rewards on flights—something not every platform offers.

Pros:

• Excellent flight + hotel bundles (often cheaper together)
• User-friendly mobile app and site
• Expedia Rewards program for discounts
• 24/7 customer support

Cons:

• Some budget airlines may not appear
• Changes and cancellations can go through third-party providers

#2: Kayak

Best For: Price comparison across hundreds of sites‍

Why It’s Ranked #2: Kayak doesn’t sell flights directly—instead, it compares prices from other agencies and airlines to help you find the best deal. If you're price-hunting or looking for flexible date options, Kayak is extremely useful.

Pros:

• Powerful price comparison tools
• Flexible date searches (e.g. “cheapest month”)
• Price alerts and travel trend insights
• Filters for nonstop, layovers, times, etc.
  

Cons:

• You book through third-party sites (not on Kayak itself)
• Limited post-booking customer service (depends on partner site)

#3: Booking.com

Best For: Booking hotels and accommodations (flights are a bonus)

Why It’s Ranked #3: Booking.com is world-famous for hotel reservations—but they’ve expanded into flights in recent years. While it’s convenient to keep everything in one place, the flight booking interface isn’t as advanced or user-focused as Expedia or Kayak.

Pros:

• Trusted platform with millions of users
• Can book accommodations and flights together
• Good for international travel planning
• Frequent discounts on accommodations

Cons:

• Flights are handled by third-party partners (e.g., Gotogate)
• Fewer tools for flexible search or price tracking
• Flight support depends on the third-party provider