Fares
Cheap flights: what actually works
Most advice about cheap flights is folklore. A few things genuinely move the price, several widely repeated tricks do nothing, and one or two of them cost you money. Here is the honest version, from people who price tickets for a living, plus the free US protections that matter once you have found a cheap fare.
On this page
What actually lowers the fare
1. Being flexible by a day or two
This is the single biggest lever, and it is not close. Airlines price by demand on a specific departure, so shifting a Friday evening flight to Tuesday morning frequently changes the fare far more than any booking tactic. If your dates can move at all, say so when you ask for a quote — it is the first thing we test.
2. Using a different airport
Most large US metros have more than one. Flying into a secondary airport can save a meaningful amount, though it is only a saving if the ground transport at the other end does not eat it. We will tell you when it does.
3. Booking in the right window
Very early is not cheap and very late is usually expensive. There is a broad middle where domestic fares tend to be at their best. See when to book a flight for the detail.
4. Counting the whole cost, not the fare
A low base fare on an unbundled carrier plus two checked bags, seat selection and a carry-on can land above a bundled fare that included all three. This is the most common way travellers overpay while believing they saved. Compare totals, not headlines.
US rules help with the first part of that sum. Under 14 CFR 399.84, an airline or ticket agent that advertises a fare must show the entire price you have to pay, including government taxes and fees, so the number on the screen should already include them. Optional extras are another matter: under 14 CFR 399.85, sellers must tell you on the first fare screen that bag fees may apply and where to find them, and your e-ticket confirmation must list your free baggage allowance and the fees for a carry-on and the first and second checked bag. Add those before you compare. Our baggage fees compared and Basic Economy vs Main Cabin guides show where the extras usually come in.
5. Checking the carriers the comparison sites miss
Not every airline distributes through every comparison site. Southwest is the well-known case, but smaller point-to-point carriers such as Breeze and Avelo also fly city pairs that otherwise need a connection, and they do not always appear where you are looking.
What does not work
- Booking on a particular day of the week. The "book on Tuesday" rule is a relic of an era when airlines filed fares manually. Pricing is now continuous and automated.
- Incognito browsing. Fares change because inventory and demand change, not because a cookie recognised you. Clearing your browser will not produce a discount.
- Waiting for a last-minute collapse. Prices on the last seats of a flight go up, not down. This works occasionally for package holidays and essentially never for scheduled domestic flights.
- Assuming one-way tickets are always cheaper. On US domestic routes they are often priced fairly, but on international itineraries a return can be considerably cheaper than two one-ways.
Cheap that turns out not to be
- Basic Economy. Lowest number on the screen, most restrictions behind it: no changes on most carriers, last boarding group, seats assigned at check-in, and on some airlines no full-size carry-on. See Basic Economy explained.
- Two separate tickets to make a connection. If the first flight is late, the second airline generally owes you nothing, and your bag may not be checked through. Sometimes it is still the right call, but you should be making that trade knowingly. See missed connecting flights.
- Connections that are too tight. A 40-minute connection at a large hub is a gamble, and the saving rarely justifies the risk.
- Overnight arrivals. A red-eye that saves money and then requires a hotel night at the far end has not saved anything.
Free protections that come with a cheap ticket
A low fare does not remove your basic rights on flights covered by US rules. Two are worth knowing before you book:
- The 24-hour rule. Under 14 CFR 259.5, when you book at least seven days before departure, the airline must either let you cancel without penalty within 24 hours or hold the reservation at the quoted fare for 24 hours without payment. The airline chooses which it offers. If you see a cheaper fare the next morning, this is how you act on it.
- Refunds when the airline cancels or significantly changes the flight. If you choose not to travel, US rules entitle you to a refund rather than a voucher, on Basic Economy as on any other fare. Our refund rights guide explains what counts as a significant change and how quickly the money must come back.
Neither covers a change of mind after the 24 hours. That is the flexibility you buy with a higher fare, which is why the cheapest ticket is not always the cheapest outcome. For timing, see when to book a flight.
Where an agent helps and where we do not
On a simple round trip in economy, a comparison site is quick and our service fee would make the total worse. We will tell you that. Where we do add value is where the cheapest answer is structural rather than a matter of searching harder — an open-jaw instead of two returns, a different origin airport, a carrier that does not appear on the site you checked, or a group fare instead of ten separate tickets.
Sources
- 14 CFR 399.84, Price advertising (eCFR)
- 14 CFR 399.85, Notice of baggage fees and other fees (eCFR)
- 14 CFR 259.5, Customer service plan (24-hour hold or cancel) (eCFR)
Common questions
Why does this site not list any cheap flight deals?
Because a published fare would be inaccurate within hours, and because US rules (14 CFR 399.84) require a ticket agent advertising a price to show the entire price to be paid, including taxes and fees. A quote for your actual dates is both more useful and more honest.
Can I cancel a cheap flight if I find a lower fare?
Within 24 hours, often yes. If you booked at least seven days before departure, 14 CFR 259.5 requires the airline to let you either cancel without penalty within 24 hours or hold the fare for 24 hours without paying. After that, the fare rules decide.
Is there a cheapest day of the week to fly?
Flying midweek is often cheaper than flying on a Friday or Sunday, because demand is lower. That is about when you travel, which does matter, rather than when you buy, which mostly does not.
Do fares drop the closer you get to departure?
Not on scheduled flights. Airlines hold back higher fare buckets for late bookers, who are typically less price-sensitive. Late booking is generally more expensive, not less.
Are budget airlines actually cheaper?
It depends entirely on what you carry. With hand baggage only they frequently are. With two checked bags and a chosen seat, they often are not. Add the extras before comparing.
Can you get fares that are not published publicly?
Agencies can hold negotiated fares on some routes. We will only tell you we have one when we actually do, and the comparison we give you is against what you could book yourself.
Get a quote
Tell us the route and how flexible you can be. Flexibility is where the savings are.