Best Website to Book Cheap Flights to the USA in 2027
Use this guide to pick the best website to book cheap flights to the USA: 11 sites compared, why fares have changed, and what a good booking site offers.
By Heather Budreviciene
Published: June 12, 2025 • 10 min read
Updated: October 15, 2026
Whether you’re flying to New York, the beaches of California, or Orlando, fares to the USA have changed a lot since early 2025, so when you book matters as much as where. A handful of search and booking sites cover most of these flights, and each suits a different kind of trip.
If you're planning your next American adventure, don't miss our dedicated guide for cheap flights and travel deals to the USA.
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Why Were Flights to the USA So Cheap in 2025?
Let’s start with the numbers: in April 2025, U.S. airfares were down nearly 8% year-over-year, according to Bureau of Labor Statistics data. That dip didn't hold. Jet fuel costs climbed sharply through 2026 on the back of geopolitical tensions, and by mid-2026 U.S. airfares were running well above where they'd been a year earlier, with the industry's own Travel Price Index showing fares up more than 25% year-over-year in July 2026. In practice:
- Fuel and geopolitical risk are now pushing fares up, not down, reversing the 2025 dip.
- Dynamic pricing means airlines still adjust fares in real time, so flash-sale-style drops still happen even in a rising market.
- New low-cost carriers on specific routes are the exception: where a budget airline has expanded into a market a bigger carrier pulled back from, fares on that route can still fall sharply even while the national average climbs.
That last point is why a deal-tracking tool matters more, not less, right now: the good fares are increasingly route-specific rather than everywhere, so knowing where to look counts for more than it did in 2025.
What Makes a Great Flight Booking Website?
Not all flight search engines are created equal. Here’s what travelers say matters most:
- Exclusive deals: Access to discounts you won’t find elsewhere.
- Personalized alerts: Get notified when prices drop for your favorite routes.
- Ease of use: Simple, fast, and mobile-friendly.
- Transparent pricing: No hidden fees or last-minute surprises.
- Flexible filters: Search by date, airport, or even “anywhere” for inspiration.
Expert Tips to Save Even More on Flights to the USA
Want to maximize your savings? Try these strategies:
- Book early for international trips: Aim for 4–6 months in advance for the best fares.
- Be flexible with dates: Flying mid-week or during off-peak times can save you up to 30%.
- Set multiple alerts: Track prices for several airports or cities to catch the lowest fare.
- Monitor price drops: Set a price alert on Kayak or Google Flights for each U.S. route you’re considering, and you’ll get an email if its fare goes down.
- Consider nearby airports: Sometimes flying into or out of a smaller airport can mean big savings.
The Best Websites for Cheap Flights to the USA, Compared
Here’s how the eleven sites compare for U.S. trips:
| Website | Description | Pros | Cons | Best For |
| RatePunk | RatePunk keeps track of what flights from your home airport usually cost, and we alert you when one drops below that price. A deal to New York, Orlando, or another U.S. city appears in the RatePunk app, on the web dashboard, and in deal emails. Our AI Deal Score rates every deal out of 100, and we check roughly 150 million flight prices each day. | - Finds deals while you plan - An AI Deal Score for every deal - Deals filtered by U.S. destination and dates | - Seeing deals takes a paid membership - You buy the ticket on another site - One home airport per membership plan | Flexible travelers watching several U.S. destinations |
| Google Flights | Google Flights is a metasearch engine that aggregates flight data from hundreds of airlines and OTAs, offering a fast, user-friendly interface. It doesn’t sell tickets but redirects to airline or OTA sites for booking. Key features include price tracking, a calendar view for cheaper dates, and predictive algorithms indicating if prices may rise or fall. It’s one of the few platforms showing Southwest Airlines (prices viewable on Southwest’s site). Robust filters (e.g., layover duration, self-transfer exclusion) and transparency about amenities (Wi-Fi, legroom, baggage) make it ideal for flexible travelers or those monitoring price trends. | - Fastest search with clean interface - Price tracking and alerts - Calendar and price trend graph - Includes Southwest Airlines - Detailed filters (e.g., layover, alliance) - Price prediction tool | - May not always show lowest price - Redirects to external sites with varying prices - Limited customer service (not an OTA) | Flexible travelers, price trackers, quick option overviews |
| Expedia | Expedia, a leading OTA, enables direct booking of flights, hotels, and packages. One Key Rewards members earn points redeemable for travel, stacking with airline miles. It searches a vast airline inventory, offers competitive prices, and excels in bundling flights with hotels for savings. Flexible date searches, budget filters (e.g., flights under $200), and a no-change-fee filter cater to cost-conscious or cautious travelers. With a reliable mobile app and 24/7 support, Expedia is perfect for seamless bookings and loyalty-focused users. | - Direct booking with large inventory - One Key Rewards program - Flexible date and budget filters - No-change-fee filter - Strong support and app - Bundling savings | - Possible booking fees - Prices may differ from airline sites - Not a metasearch, may miss some deals | One Key members, bundlers, seamless booking seekers |
| Kayak | Kayak is a metasearch engine comparing prices across airlines and OTAs, redirecting users to book externally. Its “Hacker Fares” combine one-way tickets from different airlines for savings. The PriceCheck tool verifies deals via itinerary screenshots. Flexible date searches, price alerts, and filters (cabin class, Wi-Fi) enhance usability. Kayak notes Tuesday as the cheapest day for domestic flights and Thursday for international ones from the USA. It’s great for deal hunters, especially on international routes. | - Hacker Fares for savings - PriceCheck deal verification - Flexible dates and alerts - Comprehensive filters - Strong for international flights | - Excludes Southwest Airlines - External redirects may vary in price - Some OTAs add fees | Budget travelers, international flyers, multi-site comparers |
| Momondo | Momondo, a Booking.com owned metasearch engine, offers an intuitive interface and extensive searches, including budget carriers. “Mix & Match” fares combine one-way tickets for savings, though bookings may split across sites. Visual price trend graphs, detailed filters (layover, airline alliance, aircraft), and CO2 emission sorting cater to diverse needs. It flags flexible change policies and excels for international flights or flexible destinations, making it a favorite for deal seekers and eco-conscious travelers. | - Visual price graphs - Mix & Match fares - Extensive filters (e.g., aircraft) - Budget carrier inclusion - CO2 emission sorting | - Mix & Match requires separate bookings - No Southwest Airlines - May redirect to less reliable OTAs | Flexible destination travelers, international flyers, and eco-conscious users |
| Skiplagged | Skiplagged specializes in “hidden city ticketing,” booking flights with layovers at the intended destination and skipping the final leg for savings. This controversial strategy can yield significant discounts, especially on routes with costly direct flights. Its simple interface highlights these fares, but risks include ticket cancellation, loss of miles, or airline bans. Skiplagged suits savvy travelers who travel light (no checked bags) and accept the risks for the lowest fares. | - Hidden city ticketing for savings - Simple interface - Ideal for one-way or last-minute travel | - Skiplagging risks (cancellation, bans) - Not for checked bags or frequent flyers - Limited support | Risk-tolerant travelers, one-way flyers, and lowest-price seekers |
| Skyscanner | Skyscanner, a top metasearch engine, compares flight prices across airlines and OTAs, redirecting to external booking sites. Its “Everywhere” search shows the cheapest destinations from a departure city, perfect for flexible travelers. Calendar views highlight low-fare dates, and price alerts track drops. Budget carriers are included, with filters for layovers, duration, and flexibility. Its clean interface and app make it versatile for domestic and international flights to the USA. | - “Everywhere” search for flexibility - Calendar for cheapest dates - Price alerts and filters - Budget carrier inclusion - User-friendly app | - No Southwest Airlines - Redirects may add fees - Prices may vary on booking sites | Flexible travelers, international flyers, budget seekers |
| Cheapflights | Cheapflights, part of Kayak’s parent company, is a metasearch engine with user-friendly navigation and visual tools like price calendars and fare trend charts. It emphasizes budget airlines and uses a “Smart Value” algorithm to balance cost and convenience (e.g., shorter layovers). Filters for layover cities, alliances, and policies enhance searches. While it redirects to booking sites, it’s effective for deal hunters who prefer visual price comparisons and budget carrier options. | - Price calendars and charts - Smart Value for cost-convenience - Budget airline inclusion - Strong filters - Easy interface | - No Southwest Airlines - Third-party redirects - Limited support (metasearch) | Visual learners, deal hunters, budget carrier seekers |
| Orbitz | Orbitz, an OTA, offers direct flight, hotel, and package bookings with Orbitz Rewards, earning “Orbucks” redeemable for travel. It searches a wide airline range, offers competitive prices, and excels in bundling. Flexible date searches and no-change-fee filters suit cautious travelers. A price guarantee refunds differences if cheaper fares are found post-booking. With 24/7 support and a solid app, Orbitz is ideal for loyalty-focused users or those needing reliable service. | - Orbitz Rewards (Orbucks) - Direct booking with support - Price guarantee - Flexible date and policy filters - Bundling deals | - Possible booking fees - Not a metasearch, may miss deals - Prices may exceed airline direct | Orbitz Rewards members, bundlers, support seekers |
| Travelocity | Travelocity, an Expedia Group OTA, focuses on direct bookings with a Price Match Guarantee refunding lower fares found within 24 hours. Its intuitive interface offers flexible date searches and filters for budget or flexible tickets. Strong for domestic USA flights, it also provides bundling discounts. With 24/7 support and a reliable app, Travelocity suits travelers wanting a straightforward process with assurances, especially for domestic routes. | - Price Match Guarantee - Direct booking with support - Flexible date and budget filters - Strong for domestic flights - Bundling deals | - Potential booking fees - Limited budget carrier coverage - Less comprehensive than metasearch | Domestic travelers, bundlers, price guarantee seekers |
| Priceline | Priceline, an OTA, offers “Express Deals” with discounted flights (the airline is only revealed after booking) alongside standard searches with flexible date options. Its once-famous Name Your Own Price bidding tool no longer applies to flights — Priceline dropped it for airfare back in 2016 and now keeps it only for hotels. Searching a broad inventory, Priceline provides bundling discounts and a VIP program for extra savings. It's best for deal seekers comfortable with some uncertainty or those bundling flights with hotels. | - Express Deals for savings - Flexible date and filters - VIP program discounts - Bundling options - Reliable support | - Express Deals hide the airline until booked - Some booking fees - Not a metasearch, may miss deals | Deal seekers, flexible travelers, bundlers |
Current Trends: Where Are the Cheapest Flights to the USA?
The picture has flipped since early 2025. OAG's mid-2026 route data shows outbound U.S.-to-Europe fares rising, not falling — Boston–London fares were up over 20% year-over-year, with Los Angeles–London and New York–London also higher, largely on higher jet fuel costs and tighter transatlantic capacity. Domestically, the story is more mixed: broad indexes show fares up sharply for the year overall, but on specific leisure routes where a budget carrier has expanded into space left by another airline's exit, fares have actually dropped by double digits. The takeaway: the easy, across-the-board deals of 2025 have given way to a market where the best prices are route- and timing-specific, which is exactly the kind of gap a deal-tracking tool is built to close.
Which Website Should You Use for Flights to the USA?
The right site depends on the trip you’re booking:
- A domestic U.S. flight — Google Flights includes Southwest Airlines, which Kayak, Momondo, and Skyscanner leave out.
- Booking with a price promise — Travelocity and Orbitz both offer a price guarantee on the flights you book with them.
- The lowest fare, whatever the airline — Priceline’s Express Deals reveal the airline only after you’ve paid.
- A U.S. deal you didn’t search for — When a fare from your home airport to New York, Orlando, or another city falls below its usual price, RatePunk sends you the deal.
Published: June 12, 2025
Updated: October 15, 2026