Beginner's Guide to Finding and Booking Cheap Flights in 2026

When to Book for the Lowest Fares

Two pieces of guidance on timing exist side by side. Going, the flight-deal service formerly known as Scott's Cheap Flights, gives a general rule of thumb: book domestic U.S. trips one to three months ahead and international trips two to eight months ahead, because fares move constantly and are hard to predict. Expedia's 2026 Air Hacks Report, based on the company's own booking data, found a narrower sweet spot: U.S. domestic tickets bought 15 to 30 days before departure averaged about $130 less than tickets bought six months or more ahead, while international tickets bought 8 to 15 days ahead averaged about $225 less than those booked six-plus months out. The same Expedia report found Friday is now the cheapest day overall to both book and fly, while for U.S. domestic trips specifically, flying on a Tuesday cost about 14% less than flying on a Sunday, the most expensive day.

Steps to Find and Book a Cheap Flight

1. Set a flexible date range instead of one fixed date, using a fare calendar or a tool such as Google Flights' price graph or map view, so you can see which nearby days or airports are cheaper before committing, as recommended in Going's guide.
2. Use the booking-window guidance above as a starting point for when to start watching your route, keeping in mind the two sources above point to somewhat different windows.
3. Compare prices across more than one search engine — Going's guide lists Google Flights, Skyscanner and Momondo — since no single site shows every airline's inventory, and many budget carriers only sell through their own website.
4. Ignore the idea that clearing cookies or browsing in a private window lowers the price shown to you; Going's guide states this makes no difference, because fares change with real-time demand, not with who is looking.
5. Compare secondary or nearby airports for the same trip; Going's guide notes alternative airports in the same metro area can offer lower fares even after factoring in extra ground transport.
6. Before picking the lowest number on screen, add up what the fare actually requires — a checked bag, a seat assignment, or sometimes even a full-size carry-on (see the fee comparison below) — and compare that total to the next fare tier up.
7. If you can travel with only a personal item or small carry-on, do so: Going's guide estimates this saves $60 to $120 per round trip compared with checking a bag on many routes.
8. Book directly with the airline, or through a major online travel agency, so the booking qualifies for the federal 24-hour cancellation window described below, then recheck dates and name spelling before that window closes.
9. Set a fare alert on your route and be ready to buy once you see a genuine drop, since both Going's and Thrifty Traveler's guides note that airline prices can change many times in a single day.

What Budget Airlines Really Charge

Budget carriers advertise a low base fare but itemize most of what used to be included. AARP's guide to airline baggage fees compares standard checked-bag charges at major U.S. carriers:

These legacy-carrier figures show roughly what a checked bag adds to a fare; ultra-low-cost airlines such as Allegiant price bags dynamically and can charge far more for the same bag at the gate than online. AARP's guide and Going's guide both point to the same fix: pay for bags, seats and any other extras in advance rather than at the airport or boarding gate.

Know Your Cancellation Rights

A U.S. Department of Transportation requirement, as described by Thrifty Traveler, lets travelers cancel any ticket touching the United States — domestic flights, or international flights departing from or arriving in the U.S. — within 24 hours of booking for a full cash refund, not just a travel credit, as long as the booking was made at least seven days before departure. The protection applies when booking directly with an airline; Thrifty Traveler notes major online travel agencies such as Expedia and Priceline generally honor it too, though smaller third-party sites may not. Some airlines go further than the federal floor: Thrifty Traveler reports Delta applies the refund window to all bookings regardless of how far ahead they are made, Alaska requires only 24 hours' notice before departure, and American, JetBlue, Southwest and United require the full seven days.

Tools Worth Using — and Tricks to Avoid

For comparing fares before you book, Going's guide points to a short list of tools rather than one single 'best' site.

• Google Flights — fare calendars and an explore map for comparing dates and destinations.
• Skyscanner and Momondo — aggregator searches that can surface budget carriers missing from other engines.
• Going (formerly Scott's Cheap Flights) — a deal-alert app that flags fare drops on routes you follow.
• The airline's own website — often the only place a budget carrier sells its fares, and the surest way to get the 24-hour refund protection described above.

Going's guide also describes riskier tactics such as hidden-city ticketing — buying a cheaper itinerary with a connection in your real destination, then skipping the final leg — and 'throwaway' round-trip tickets. The guide states these violate airline contracts of carriage and can lead to a cancelled frequent-flyer account, and limits any use of hidden-city tickets to the end of a trip, without checked bags.

None of these tactics replace the basics covered above: flexible dates, more than one search tool, an honest total cost once bag and seat fees are added in, and the 24-hour window to fix a booking mistake.