I have spent an unreasonable amount of my adult life refreshing flight search pages, and after years of this I can tell you one thing with confidence: finding cheap flights in USA is less about luck and more about knowing what things should cost. If you do not know that a New York to Chicago round trip regularly sells for $118 on Spirit and $178 on United, a $260 fare looks normal. It is not. This guide breaks down real prices, route by route, so you can spot a deal the second you see one.
How much do domestic flights in the USA actually cost?
Domestic airfare in the United States swings wildly depending on three things: distance, airline type, and how popular the route is. In 2025, the average domestic round trip sits around $310 according to the Bureau of Transportation Statistics data, but that average hides a huge spread. Short hops on budget carriers can go as low as $39 one way. Cross-country premium routes can top $600 in summer.
Here is a rough breakdown I use as a mental price sheet:
| Route type | Budget airline (one way) | Legacy carrier (round trip) |
|---|---|---|
| Short hop (under 500 miles) | $39–$79 | $150–$250 |
| Mid-range (500–1,500 miles) | $59–$120 | $220–$380 |
| Coast to coast | $99–$180 | $280–$550 |
Hawaii or Alaska from mainland |
$150–$300 | $400–$800 |
Treat these as ceilings, not targets. If a fare lands well below the range, book it. If it sits at the top, wait a few days.
Which budget airlines are worth it?
The USA has more genuine low-cost carriers than most people realize. Spirit, Frontier, Allegiant, Avelo, Breeze, and Southwest all play in the budget space, but they are not equal.
Frontier and Spirit are the cheapest base fares and the most aggressive with fees. A $44 Spirit fare becomes $110 fast once you add a carry-on ($40 to $65) and a seat assignment. Allegiant is odd: it flies into small secondary airports, so check how far that “cheap” airport actually is from your destination. Breeze and Avelo are newer, and honestly I have had some of my best sub-$70 fares with them on routes nobody else flies.
Southwest deserves a mention even though it is not the cheapest anymore. Two free checked bags still saves a family of four around $240 round trip, which changes the math completely.
When should you book to get the cheapest fares?
The booking window matters more than most travelers think. Domestic USA flights are usually cheapest between 21 and 60 days before departure. Book earlier than that and you pay the early-bird premium. Book later, especially inside 14 days, and fares typically jump 30 to 60 percent.
A few timing rules that have held up for me:
- Fly Tuesday, Wednesday or Saturday. These are consistently the cheapest days, often $20 to $50 below Sunday and Friday fares.
- Search in the early afternoon on weekdays. Airlines load fare sales overnight on Monday through Wednesday.
- Avoid flying the day before and after US holidays. The Wednesday before Thanksgiving can cost triple the fare two days earlier.
- January, February, September and early November are the cheapest months to fly domestically.
One caveat: price-drop prediction tools are decent but not magic. Google Flights date-grid view has saved me more money than any paid subscription ever has.
Are there hidden fees that ruin the deal?
Sometimes, yes. This is where the price guide really earns its keep, because a $39 fare is rarely $39 out the door. Bag fees are the big one. Checked bags run $30 to $40 each way on legacy carriers, $50 to $75 on ultra-low-cost carriers, and carry-ons cost extra on Spirit and Frontier specifically.
Seat selection adds $10 to $45 per leg if you want anything better than a middle seat. Priority boarding, which used to be a status perk, is now a $15 to $30 upsell everywhere. A family of four on a “cheap” fare can easily add $300 in extras. Always compare the final price including one carry-on bag, because that is the realistic scenario for most trips.
What about Dutch travelers flying to the USA?
Flying from the Netherlands into the US
For readers booking from the Netherlands, the entry point matters. Direct flights from Amsterdam Schiphol to New York, Los Angeles, Chicago or Atlanta usually cost between €380 and €650 return in low season, and €700 to over €1,000 in July and August. Those are big numbers, but the trick is to fly into a cheap US hub and connect onward on a domestic budget carrier.
For example, Amsterdam to Miami direct sometimes drops to around €420 return in January. From Miami, Spirit and Frontier cover Florida and the Southeast for $40 to $80 per leg. Compare that with a single Amsterdam to New Orleans ticket, which rarely dips below €560.
US transit and transfer costs to remember
Two practical costs catch European travelers off guard. First, there is no rail alternative inside the US the way there is in Europe, so domestic flights are essential for covering distance. Second, US airports are often far from city centers, and rideshare from Dallas Fort Worth to downtown Dallas runs about $45. Budget airports are worse by design: Allegiant’s Las Vegas terminal and Breeze’s smaller stops can add a $60 to $80 transfer cost. Factor that in before celebrating a low fare.
Five tricks I actually use to pay less
- Set fare alerts on Google Flights for 3 to 5 route variations at once, including nearby airports.
- Check the budget carriers directly on their own sites. About a third of their cheapest fares never appear in big search engines.
- Use airline points for domestic tickets only when the cash fare is above $250. Below that, points are a bad deal on domestic routes.
- Consider the 24-hour rule. US airlines must hold or refund any booking within 24 hours, so you can lock a decent fare and keep watching.
- Split tickets. Booking two one-ways on different carriers often beats the round trip price on competitive routes.
What is a genuinely good price in 2025?
Let me give you the numbers I consider a booking trigger. Coast to coast under $150 one way: book immediately. Miami to New York under $90: book. Chicago to Denver under $70: book. Anything under $0.06 per mile flown is a fair deal in the current market, and under $0.045 per mile is genuinely rare, so do not hesitate when you see it.
The opposite also holds. If you see a domestic fare above $0.12 per mile, something is off, either it is holiday week or the route has no competition. In that case, check whether flying to a nearby airport 100 miles away and renting a car comes out cheaper. On routes like Cincinnati to the West Coast, it often does.
FAQ: cheap flights in USA
Is it cheaper to book one-way tickets in the USA?
Often yes, unlike Europe. US carriers price one-ways the same as half a round trip, so mixing airlines per leg can cut costs by 20 to 30 percent on competitive routes.
Do flight prices drop on Tuesdays?
Somewhat. Airlines release sales early in the week, so Tuesday and Wednesday afternoon searches often show fresher, lower fares. But the day you book matters far less than how far ahead you book.
Are basic economy fares worth it in the USA?
Rarely for anything beyond a short solo trip. Basic economy on Delta, United and American means no seat choice, no changes, and boarding last. The $30 saving is usually not worth it unless you travel with only a personal item.
The short version
Know your price ceiling before you search, book 21 to 60 days out, always compare with bags included, and check budget carriers directly. Do that consistently and cheap flights in USA stop being a lottery and become a routine. The $39 fares are real, they just belong to people who were watching before everyone else.